WO2008000071B1 - Method, apparatus , signals , and media, for selecting operating conditions of a genset - Google Patents

Method, apparatus , signals , and media, for selecting operating conditions of a genset

Info

Publication number
WO2008000071B1
WO2008000071B1 PCT/CA2007/001135 CA2007001135W WO2008000071B1 WO 2008000071 B1 WO2008000071 B1 WO 2008000071B1 CA 2007001135 W CA2007001135 W CA 2007001135W WO 2008000071 B1 WO2008000071 B1 WO 2008000071B1
Authority
WO
WIPO (PCT)
Prior art keywords
operating
genset
values
power output
operating points
Prior art date
Application number
PCT/CA2007/001135
Other languages
French (fr)
Other versions
WO2008000071A1 (en
Inventor
Wei Liu
Nicolas Louis Bouchon
Original Assignee
Azur Dynamics Inc
Wei Liu
Nicolas Louis Bouchon
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Azur Dynamics Inc, Wei Liu, Nicolas Louis Bouchon filed Critical Azur Dynamics Inc
Priority to ES07720049T priority Critical patent/ES2433373T3/en
Priority to CA2659087A priority patent/CA2659087C/en
Priority to EP12197542.9A priority patent/EP2620342B1/en
Priority to EP07720049.1A priority patent/EP2035270B1/en
Publication of WO2008000071A1 publication Critical patent/WO2008000071A1/en
Publication of WO2008000071B1 publication Critical patent/WO2008000071B1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B60W20/11—Controlling the power contribution of each of the prime movers to meet required power demand using model predictive control [MPC] strategies, i.e. control methods based on models predicting performance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
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    • B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
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    • B60L15/2045—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for optimising the use of energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
    • B60L50/62—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles charged by low-power generators primarily intended to support the batteries, e.g. range extenders
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
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    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F13/00—Apparatus for measuring by volume and delivering fluids or fluent solid materials, not provided for in the preceding groups
    • G—PHYSICS
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    • G—PHYSICS
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    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/04—Control effected upon non-electric prime mover and dependent upon electric output value of the generator
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/36—Temperature of vehicle components or parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60L2240/00—Control parameters of input or output; Target parameters
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    • Y10S903/902—Prime movers comprising electrical and internal combustion motors
    • Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00—Hybrid electric vehicles, HEVS
    • Y10S903/902—Prime movers comprising electrical and internal combustion motors
    • Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/904—Component specially adapted for hev
    • Y10S903/905—Combustion engine
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00—Hybrid electric vehicles, HEVS
    • Y10S903/902—Prime movers comprising electrical and internal combustion motors
    • Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/904—Component specially adapted for hev
    • Y10S903/906—Motor or generator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00—Hybrid electric vehicles, HEVS
    • Y10S903/902—Prime movers comprising electrical and internal combustion motors
    • Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/93—Conjoint control of different elements

Abstract

A method and apparatus for selecting optimal operating conditions of a genset is disclosed. The genset includes an engine coupled to an electrical power generator, the genset having a plurality of operating points each including an engine speed value and a generator electrical power output value, and having a plurality of cost values associated with operating the genset at respective operating points. The method involves selecting a set of operating points from the plurality of operating points such that a sum of cost values associated with operating points in the set is minimized and such that the engine speed and generator electrical power output values of the operating points in the set increase or decrease monotonically.

Claims

AMENDED CLAIMS received by the International Bureau on 10 December 2007 810.12.2007)62What is claimed is:
1. A method for selecting operating conditions of a genset, the genset comprising an engine coupled to an electrical power generator, the genset having a plurality of operating points each comprising an engine speed value and a generator electrical power output value, and having a plurality of cost values associated with operating the genset at respective operating points, the method comprising:
selecting a set of operating points from the plurality of operating points such that a sum of cost values associated with operating points in said set is minimized and such that the engine speed and generator electrical power output values of the operating points in said set increase or decrease monotonically.
2. The method of claim 1 further comprising assigning a weight to each of the power output values such that cost values corresponding to more frequently demanded power outputs values are assigned a greater weight in said sum of cost values than cost values corresponding to less frequently demanded electrical power output values.
3. The method of claim 2 wherein assigning said weight comprises assigning greater weight to electrical power output values proximate a midpoint of a range of power outputs that the generator is capable of supplying.
4. The method of claim 2 further comprising generating a record of received demands for power outputs during operation of the genset over a period of time, and wherein assigning said weights comprises assigning greater weight to more frequently used power output values. 63
5. The method of claim 4 wherein generating said record comprises generating said record and updating said weights while operating the genset and wherein selecting further comprises selecting a new set of operating points when said weights have been updated.
6. The method of claim 1 wherein selecting comprises:
successively applying a dynamic programming algorithm to select sets of operating points at successive power output values within a range of power outputs the generator is capable of supplying; and
selecting a set of operating points corresponding to a last power output value in said range as said set of operating points for said genset.
7. The method of claim 6 wherein applying said dynamic programming algorithm comprises:
producing a first plurality of sums of cost values at a first power output value;
memoizing a result of at least one of said first plurality of said sums; and
using at least some of said memoized results for producing a further sum of cost values at a subsequent power output value.
8. The method of claim 7 wherein selecting comprises locating a minimum cost value at each power output value and wherein successively applying said dynamic programming algorithm comprises 64
first producing said sums of cost values corresponding to said minimum cost value at each successive power output value.
9. The method of claim 8 wherein locating said minimum cost value comprises locating an operating point corresponding to said minimum cost value using a golden section search technique.
10. The method of claim 1 further comprising receiving a demand to supply power at a demanded power output value and operating the genset at an operating point in said set of operating points corresponding to said demanded power output value.
11. The method of claim 10 wherein the genset is used to generate electrical energy for use in a hybrid vehicle and wherein receiving said demand comprises receiving a demand to supply power to at least one of a drive motor, a charger operable to charge a storage element, and an accessory associated with the hybrid vehicle.
12. The method of claim 11 wherein receiving said demand to supply power to said charger comprises receiving a demand to supply power to said charger while said hybrid electric vehicle remains stationary.
13. The method of claim 11 wherein receiving said demand to supply power to said drive motor comprises receiving a drive signal from an operator foot pedal representing a desired drive power to be supplied by said drive motor to wheels of said hybrid vehicle.
14. The method of claim 13 wherein said storage element is operable to supply at least a first portion of said desired drive power, and wherein receiving said demand comprises receiving a demand for a second portion of said desired drive power. 65
15. The method of claim 13 wherein receiving said demand to supply power to said charger comprises receiving a charge signal from a storage element controller, said charge signal being produced in response to a state of charge associated with said storage element.
16. The method of claim 1 further comprising receiving a plurality of cost values.
17. The method of claim 16 further comprising selecting a new set of operating points in response to receiving said plurality of cost values.
18. The method of claim 1 wherein selecting comprises selecting said set of genset operating points prior to operating said genset.
19. An apparatus for selecting operating conditions of a genset, the genset comprising an engine coupled to an electrical power generator, the genset having a plurality of operating points each comprising an engine speed value and a generator electrical power output value, and having a plurality of cost values associated with operating the genset at respective operating points, the apparatus comprising:
means for selecting a set of operating points from the plurality of operating points such that a sum of cost values associated with operating points in said set is minimized and such that the engine speed and generator electrical power output values of the operating points in said set increase or decrease monotonically.
20. The apparatus of claim 19 further comprising means for assigning a weight to each of the power output values such that cost values corresponding to more frequently demanded power output values are 66
assigned a greater weight in said sum of cost values than cost values corresponding to less frequently demanded electrical power output values.
21. The apparatus of claim 20 wherein said means for assigning said weight comprises means for assigning greater weight to electrical power output values proximate a midpoint of a range of power outputs that the generator is capable of supplying.
22. The apparatus of claim 20 further comprising means for generating a record of received demands for power outputs during operation of the genset over a period of time, and wherein said means for assigning said weights comprises means for assigning greater weight to more frequently used power output values.
23. The apparatus of claim 22 wherein said means for generating said record comprises means for updating said weights while operating the genset and wherein said means for selecting is operably configured to select a new set of operating points when said weights have been updated.
24. The apparatus of claim 19 wherein said means for selecting comprises:
means for successively applying a dynamic programming algorithm to select sets of operating points at successive power output values within a range of power output values the generator is capable of supplying; and
means for selecting a set of operating points corresponding to a last power output value in said range as said set of operating points for said genset.
25. The apparatus of claim 24 wherein said means for applying said dynamic programming algorithm comprises:
means for producing a first plurality of sums of cost values at a first power output value;
means for memoizing a result of at least one of said first plurality of said sums; and
means for using at least some of said memoized results for producing a further sum of cost values at a subsequent power output value.
26. The apparatus of claim 25 wherein said means for selecting comprises means for locating a minimum cost value at each power output value and wherein said means for successively applying said dynamic programming algorithm comprises means for first producing said sums of cost values corresponding to said minimum cost value at each successive power output value.
27. The apparatus of claim 26 wherein said means for locating said minimum cost value comprises means for implementing a golden section search technique.
28. The apparatus of claim 19 further comprising means for receiving a demand to supply power at a demanded power output value and means for operating the genset at an operating point in said set of operating points corresponding to said demanded power output value.
29. The apparatus of claim 28 wherein the genset is used to generate electrical energy for use in a hybrid vehicle and wherein said means for receiving said demand comprises means for receiving a demand to 68
supply power to at least one of a drive motor, a charger operable to charge a storage element, and an accessory associated with the hybrid vehicle.
30. The apparatus of claim 29 wherein said means for receiving said demand to supply power to said charger comprises means for receiving a demand to supply power to said charger while said hybrid electric vehicle remains stationary.
31. The apparatus of claim 29 wherein said storage element comprises at least one of a storage battery, a capacitor, and an electrically coupled flywheel.
32. The apparatus of claim 29 wherein said means for receiving said demand to supply power to said drive motor comprises means for receiving a drive signal from an operator foot pedal representing a desired drive power to be supplied by said drive motor to wheels of said hybrid vehicle.
33. The apparatus of claim 32 wherein said storage element is operable to supply at least a first portion of said desired drive power, and wherein said demand comprises a demand for a second portion of said desired drive power.
34. The apparatus of claim 32 wherein said means for receiving said demand to supply power to said charger comprises means for receiving a charge signal from a storage element controller, said charge signal being produced in response to a state of charge associated with said storage element. 69
35. The apparatus of claim 19 further comprising means for receiving a plurality of cost values.
36. The apparatus of claim 35 further comprising means for selecting a new set of operating points in response to receiving said plurality of cost values.
37. The apparatus of claim 19 wherein said means for selecting comprises means for selecting said set of genset operating points prior to operating said genset.
38. An apparatus for selecting operating conditions of a genset, the genset comprising an engine coupled to an electrical power generator, the genset having a plurality of operating points each comprising an engine speed value and a generator electrical power output value, and having a plurality of cost values associated with operating the genset at respective operating points, the apparatus comprising:
a processor circuit operable to select a set of operating points from the plurality of operating points such that a sum of cost values associated with operating points in said set is minimized and such that the engine speed and generator electrical power output values of the operating points in said set increase or decrease monotonically.
39. The apparatus of claim 38 wherein said processor circuit is operably configured to assign a weight to each of the power output values such that cost values corresponding to more frequently demanded power outputs are assigned a greater weight in said sum of cost values than cost values corresponding to less frequently demanded electrical power output values. 70
40. The apparatus of claim 39 wherein said processor circuit is operably configured to assign greater weight to electrical power output values proximate a midpoint of a range of power outputs that the generator is capable of supplying.
41. The apparatus of claim 39 wherein said processor circuit is operably configured to generate a record of received demands for power outputs during operation of the genset over a period of time and to assign greater weight to more frequently used power output values.
42. The apparatus of claim 41 wherein said processor circuit is operably configured to update said weights while operating the genset and to select a new set of operating points when said weights have been updated.
43. The apparatus of claim 38 wherein said processor circuit is operably configured to:
successively apply a dynamic programming algorithm to select sets of operating points at successive power output values within a range of power outputs the generator is capable of supplying; and
select a set of operating points corresponding to a last power output value in said range as said set of operating points for said genset.
44. The apparatus of claim 43 wherein said processor circuit is operably configured to:
produce a first plurality of sums of cost values at a first power output value; 71
memoize a result of at least one of said first plurality of said sums; and
use at least some of said memoized results for producing a further sum of cost values at a subsequent power output value.
45. The apparatus of claim 44 wherein said processor circuit is operably configured to locate a minimum cost value at each power output value and to apply said dynamic programming algorithm to first produce said sums of cost values corresponding to said minimum cost value at each successive power output value.
46. The apparatus of claim 45 wherein said processor circuit is operably configured to locate said minimum cost value using a golden section search technique.
47. The apparatus of claim 38 wherein said processor circuit is operably configured to receive a demand to supply power at a demanded power output value and to operate the genset at an operating point in said set of operating points corresponding to said demanded power output value.
48. The apparatus of claim 47 wherein the genset is used to generate electrical energy for use in a hybrid vehicle and wherein said processor circuit is operably configured to receive a demand to supply power to at least one of a drive motor, a charger operable to charge a storage element, and an accessory associated with the hybrid vehicle.
49. The apparatus of claim 48 wherein said processor circuit is operably configured to receive said demand to supply power to said charger while said hybrid electric vehicle remains stationary. 72
50. The apparatus of claim 48 wherein said storage element comprises at least one of a storage battery, a capacitor, and an electrically coupled flywheel.
51. The apparatus of claim 48 wherein said processor circuit is operably configured to receive a drive signal from an operator foot pedal representing a desired drive power to be supplied by said drive motor to wheels of said hybrid vehicle.
52. The apparatus of claim 51 wherein said storage element is operable to supply at least a first portion of said desired drive power, and wherein said demand comprises a demand for a second portion of said desired drive power.
53. The apparatus of claim 51 wherein said processor circuit is operably configured to receive a charge signal from a storage element controller, said charge signal being produced in response to a state of charge associated with said storage element.
54. The apparatus of claim 38 wherein said processor circuit is operably configured to receive a plurality of cost values.
55. The apparatus of claim 54 wherein said processor circuit is operably configured to select a new set of operating points in response to receiving said plurality of cost values.
56. The apparatus of claim 38 wherein said processor circuit is operably configured to select said set of genset operating points prior to operating the genset.
57. A computer readable medium encoded with codes for directing a processor circuit to perform a method for selecting optimal operating 73
conditions of a gensβt, the genset comprising an engine coupled to an electrical power generator, the genset having a plurality of operating points each comprising an engine speed value and a generator electrical power output value, and having a plurality of cost values associated with operating the genset at respective operating points, the method comprising:
selecting a set of operating points from the plurality of operating points such that a sum of cost values associated with operating points in said set is minimized and such that the engine speed and generator electrical power output values of the operating points in said set increase or decrease monotonically.
58. A computer readable signal encoded with codes for directing a processor circuit to perform a method for selecting optimal operating conditions of a genset, the genset comprising an engine coupled to an electrical power generator, the genset having a plurality of operating points each comprising an engine speed value and a generator electrical power output value, and having a plurality of cost values associated with operating the genset at respective operating points, the method comprising:
selecting a set of operating points from the plurality of operating points such that a sum of cost values associated with operating points in said set is minimized and such that the engine speed and generator electrical power output values of the operating points in said set increase or decrease monotonically.
59. A data structure for facilitating transfer of a set of operating points used in operating a genset, the genset comprising an engine coupled to an electrical power generator, the genset having a plurality of operating 74
points each comprising an engine speed value and a generator electrical power output value, and having a plurality of cost values associated with operating the genset at respective operating points, the data structure comprising:
a set of operating points, each operating point comprising an engine speed data element and a linked power output data element, said engine speed data element and said power output data elements in said set having monotonically increasing or decreasing values, said data elements in said set having values that minimize a sum of the cost values associated with operating the genset at respective operating points.
60. A method for producing a plurality of cost values associated with operating a genset at respective operating points, the genset comprising an engine coupled to an electrical power generator, the method comprising:
assigning weights to each of a plurality of operating conditions associated with operating the genset, said weights representing a desired trade-off between said plurality of operating conditions;
receiving operating condition values corresponding to each of said plurality of operating conditions, said operating condition values associated with operating the genset at each of a plurality of operating points, said operating points each comprising an engine speed value and a generator electrical power output value, at least one generator electrical power output value having more than one possible operating point; and 75
producing the cost values for each operating point by combining said operating condition values in accordance with said weights for each respective operating point.
61. The method of claim 60 wherein receiving said operating condition values comprises one of:
receiving a computer readable signal encoded with codes representing said operating condition values; and
reading a computer readable medium encoded with codes representing said operating condition values.
62. The method of claim 60 wherein receiving comprises receiving a set of data values representing expected values of said operating conditions.
63. The method of claim 60 further comprising producing a signal representing a real-time value of at least one of said operating condition values and wherein receiving comprises receiving said signal.
64. The method of claim 60 wherein receiving said operating condition values comprises receiving values representing at least one of:
a fuel consumption level;
a nitrogen-oxide emission level ;
a carbon monoxide emission level;
a hydrocarbon emission level; and
a particulate matter emission level. 76
65. The method of claim 60 wherein receiving said operating condition values comprises receiving a fuel consumption level and a level of at least one engine emission.
66. The method of claim 60 wherein assigning said weights comprises receiving user input at a user interface associated with the genset and updating said weights in accordance with said user input.
67. The method of claim 60 wherein producing said cost values comprises calculating a weighted sum of said operating condition values for each of said plurality of genset operating points.
68. The method of claim 60 further comprising normalizing said operating condition values and wherein combining said operating condition values comprises combining said normalized operating condition values.
69. An apparatus for producing a plurality of cost values associated with operating a genset at respective operating points, the genset comprising an engine coupled to an electrical power generator, the apparatus comprising:
means for assigning weights to each of a plurality of operating conditions associated with operating the genset, said weights representing a desired trade-off between said plurality of operating conditions;
means for receiving operating condition values corresponding to each of said plurality of operating conditions, said operating condition values associated with operating the genset at each of a plurality of operating points, said operating points each 77
comprising an engine speed value and a generator electrical power output value, at least one generator electrical power output value having more than one possible operating point; and
means for producing the cost values for each operating point by combining said operating condition values in accordance with said weights for each respective operating point.
70. The apparatus of claim 69 wherein said means for receiving said operating condition values comprises one of:
means for receiving a computer readable signal encoded with codes representing said operating condition values; and
means for reading a computer readable medium encoded with codes representing said operating condition values.
71. The apparatus of claim 69 wherein said means for receiving comprises means for receiving a set of data values representing expected values of said operating conditions.
72. The apparatus of claim 69 further comprising means for producing a signal representing a real-time value of at least one of said operating condition values, and further comprising means for receiving said signal.
73. The apparatus of claim 69 wherein said means for receiving said operating condition values comprises means for receiving values representing at least one of:
a fuel consumption level; 78
a nitrogen-oxide emission level ;
a carbon monoxide emission level;
a hydrocarbon emission level; and
a particulate matter emission level.
74. The apparatus of claim 69 wherein said means for receiving said plurality of operating condition values comprises means for receiving a fuel consumption level and a level of at least one engine emission.
75. The apparatus of claim 69 wherein said means for assigning said weights comprises means for receiving user input at a user interface associated with the genset and means for updating said weights in accordance with said user input.
76. The apparatus of claim 69 wherein said means for producing the cost values comprises means for calculating a weighted sum of said operating condition values for each of the plurality of genset operating points.
77. The apparatus of claim 69 further comprising means for normalizing said operating condition values prior to combining said operating condition values.
78. An apparatus for producing a plurality of cost values associated with operating a genset at respective operating points, the genset comprising an engine coupled to an electrical power generator, the apparatus comprising: 79
a processor circuit, operably configured to assign weights to each of a plurality of operating conditions associated with operating the genset, said weights representing a desired tradeoff between said plurality of operating conditions;
said processor circuit being operably configured to receive operating condition values corresponding to each of the plurality of operating conditions, said operating condition values associated with operating the genset at each of a plurality of operating points, said operating points each comprising an engine speed value and a generator electrical power output value, at least one generator electrical power output value having more than one possible operating point; and
said processor circuit being operably configured to produce the cost values for each operating point by combining said operating condition values in accordance with said weights for each respective operating point.
79. The apparatus of claim 78 wherein said processor circuit is operabfy configured to receive one of:
a computer readable signal encoded with codes representing said operating condition values; and
a computer readable medium encoded with codes representing said operating condition values.
80. The apparatus of claim 78 wherein said processor circuit is operably configured to receive a set of data values representing expected values of said operating conditions. 80
81. The apparatus of claim 78 further comprising a sensor operably configured to produce a signal representing a real-time value of at least one of said operating condition values and wherein said processor circuit is operably configured to receive said signal.
82. The apparatus of claim 78 wherein the processor circuit is operably configured to receive operating condition values representing at least one of:
a fuel consumption level;
a nitrogen-oxide emission level ;
a carbon monoxide emission level;
a hydrocarbon emission level; and
a particulate matter emission level.
83. The apparatus of claim 78 wherein said processor circuit is configured to receive operating condition values representing a fuel consumption level and a level of at least one engine emission.
84. The apparatus of claim 78 wherein said processor circuit is operably configured to receive user input at a user interface associated with the genset and to update said weights in accordance with said user input.
85. The apparatus of claim 78 wherein said processor circuit is operably configured to calculate a weighted sum of said operating conditions for each of said plurality of genset operating points. 81
86. The apparatus of claim 78 wherein said processor circuit is operably configured to normalize said operating condition values prior to combining said operating condition values.
87. A computer readable medium encoded with codes for directing a processor circuit to carry out a method for producing a plurality of cost values associated with operating a genset at respective operating points, the genset comprising an engine coupled to an electrical power generator, the method comprising:
assigning weights to each of a plurality of operating conditions associated with operating the genset, said weights representing a desired trade-off between said plurality of operating conditions;
receiving operating condition values corresponding to each of said plurality of operating conditions, said operating condition values associated with operating the genset at each of a plurality of operating points, said operating points each comprising an engine speed value and a generator electrical power output value, at least one generator electrical power output value having more than one possible operating point; and
producing the cost values for each operating point by combining said operating condition values in accordance with said weights for each respective operating point.
88. A computer readable signal encoded with codes for directing a processor circuit to carry out a method for producing a plurality of cost values associated with operating a genset at respective operating 82
points, the genset comprising an engine coupled to an electrical power generator, the method comprising:
assigning weights to each of a plurality of operating conditions associated with operating the genset, said weights representing a desired trade-off between said plurality of operating conditions;
receiving operating condition values corresponding to each of said plurality of operating conditions, said operating condition values associated with operating the genset at each of a plurality of operating points, said operating points each comprising an engine speed value and a generator electrical power output value, at least one generator electrical power output value having more than one possible operating point; and
producing the cost values for each operating point by combining said operating condition values in accordance with said weights for each respective operating point.
89. A data structure for facilitating transfer of cost value data for use in operating a genset at respective operating points, the genset comprising an engine coupled to an electrical power generator, the data structure comprising:
a collection of linked data elements, said data elements comprising:
a plurality of operating points each comprising an engine speed value and a generator electrical power output 83
value, at least one generator electrical power output value having more than one possible operating point; and
a cost value corresponding to each of said operating points, each cost value representing a weighted combination of a plurality of operating conditions associated with operating the genset at said operating point.
PCT/CA2007/001135 2006-06-26 2007-06-26 Method, apparatus , signals , and media, for selecting operating conditions of a genset WO2008000071A1 (en)

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ES07720049T ES2433373T3 (en) 2006-06-26 2007-06-26 Procedure, devices, signals and means, for the selection of the operating conditions of a generator set
CA2659087A CA2659087C (en) 2006-06-26 2007-06-26 Method, apparatus, signals, and media, for selecting operating conditions of a genset
EP12197542.9A EP2620342B1 (en) 2006-06-26 2007-06-26 Method, apparatus, signals, and media, for selecting operating conditions of a genset
EP07720049.1A EP2035270B1 (en) 2006-06-26 2007-06-26 Method, apparatus, signals, and media, for selecting operating conditions of a genset

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