WO2010137935A1 - Device for the predictive monitoring and thermal protection of motors and electrical machines - Google Patents

Device for the predictive monitoring and thermal protection of motors and electrical machines Download PDF

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Publication number
WO2010137935A1
WO2010137935A1 PCT/MX2010/000046 MX2010000046W WO2010137935A1 WO 2010137935 A1 WO2010137935 A1 WO 2010137935A1 MX 2010000046 W MX2010000046 W MX 2010000046W WO 2010137935 A1 WO2010137935 A1 WO 2010137935A1
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Prior art keywords
motor
thermal protection
thermal
electric motors
predictive monitoring
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PCT/MX2010/000046
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Spanish (es)
French (fr)
Inventor
Francisco Manuel TOGNO MURGUÍA
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Togno Murguia Francisco Manuel
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Publication of WO2010137935A1 publication Critical patent/WO2010137935A1/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34Testing dynamo-electric machines
    • G01R31/343Testing dynamo-electric machines in operation

Definitions

  • the object of this invention is to provide to the industry and to any user of electric machines and motors, a new reliable and precise monitor protector that efficiently protects the production that the motor or machine executes, allowing to obtain the maximum performance with the Less deterioration for the engine.
  • This new device following the standard IEC standards, guarantees that the stoppage programming of the same will be at the right time, as it adapts to the manufacturer's specific standard, automatically adjusting after being programmed, with the weather variables
  • This device measures the internal temperature of the motor or machine, and that of the surrounding environment and compares the difference between the two, and as a result, the disconnection threshold rises or falls.
  • each moment calculates the variable capacity of the environment to absorb the temperature that the motor dissipates.
  • a screen shows the hottest temperature of the coils, allowing to anticipate and correct any anomaly detected, when it starts, and if by X circumstance, the temperature reading is not verified, it will call the attention of the user with an alarm, alerting him of a problem, before automatically stopping the machine or engine, remaining after the disconnection fixed on the screen, the cause for the which ordered the shutdown of the electricity supply to the motor. All this information is transmitted by a cable or wirelessly to the computer screen or to a computer (as installed).
  • the IEC winding thermal classification table, type Y, A, E was considered as a comparative basis; B, F, H, according to NEMA MG-I, as well as the height above sea level, where the motor or apparatus is set, as well as the result of the previous analysis of the conductive resistivity of the motor winding performed by The same device.
  • the proposed sensor can operate in the temperature range of minus 40 degrees Celsius, to more than 300 degrees Celsius, covering the range of all types of thermal insulation (from Y to H), other than the sensor we occupy, presents greater protection in the face of other adverse circumstances that may irreversibly damage the engine, particularly by having a more consistent approach with the specific reality of the conditions surrounding the site where the engine is implanted.
  • figure 1 an electronic protector and monitor, for machines and electric motors, which will estimate the ambient temperature, atmospheric pressure and thermal resistivity of the winding of the coils, to calculate the maximum convenient temperature allowed by the type of insulator installed in the said coils
  • Figure 1 is a schematic block diagram, which clearly describes the integration of the elements of a thermal monitor protector for motors and induction machines, which estimates the atmospheric pressure and the ambient temperature surrounding the motor to calculate the temperature rise maximum in electric windings.
  • a three-phase power source (10) that is responsible for supplying the electric emergency to the motor (12) or induction machines.
  • He electromechanical contactor (11) which, through its control coil, transfers the energy from the three-phase power source (10), to the motor or induction machine (12).
  • the control system based on the microprocessor (13), the motor control and protection actions (12), are given by 3 or more KTYS thermal sensors (14), which, each, are distributed at a maximum of 120 ° mechanics inside the motor stator windings (12); the hottest temperature of the 3 or more windings will be counted, which will be shown through a luminous screen (15); by means of a programming keyboard (16), the maximum allowed temperature limit will be entered, according to the type of thermal classification of the motor (12) and the atmospheric pressure where said motor is installed (12); it will also be stored permanently in a serial memory (17); a fourth thermal sensor (18) will be used to measure the ambient temperature surrounding the motor (12), and this will be used, by the control system (13), to calculate, using a table that estimates the ambient temperature surrounding the motor motor (12), the maximum permissible limit on motor windings (12); a 2-wire signal conditioning system (19), will be responsible for energizing the thermal sensors (14 and 18), which, due to their nature, significantly simplify the design of the signal conditioning system (19)
  • a digital analog converter, serial or equivalent, will be the interface between the 2-wire signal conditioner (19) and the control system based on a microprocessor (13): when any of the internal temperatures of the motor windings (12 ) has reached dangerous levels that exceed 90% of the maximum temperature degrees allowed by the type of insulator, the control system (13) will activate an audible and / or visible alarm (20); which will be deactivated only if the temperature drops below 90%, mentioned above; When any of the 3 temperatures of the motor's internal windings (12) has reached the maximum temperature limit, the control system (13) will deactivate the power supply from the three-phase power source (10), by de-energizing the contactor control coil (11) through the relay (21), although the temperature that caused the disconnection of the three-phase power source (10) towards the motor (12) has fallen below the maximum allowed value, the control system (13) will reconnect only when it has been manually reset, our invention also has a protection of short circuit given by humidity at the start of the motor (12), to avoid the destruction of the motor that is wet or submerged

Abstract

The novel features of the invention are summarised below. The device conditions the start-up of the motor to the state thereof in terms of age and moisture level, as detected in the insulator of the sector. The program of the device takes account of climatological variables to ensure that the motor is not needlessly disconnected and that it is always in response to an exact increase so that the recovery capability of the sector varnish is not exceeded. Depending on the program, an audible and visible alarm is triggered when an anomaly approaches the disconnection threshold. In addition, the device constantly monitors and displays the internal temperatures. The device can be installed in a motor and check same wirelessly or via cables when the motor is more than one kilometer from the monitoring device and screen. When the motor is disconnected, the device leaves the key that represents the reason for the disconnection on the screen.

Description

DISPOSITIVO PARA EL MONITOREO PREDICTIVO Y PROTECCIÓN TÉRMICA DEVICE FOR PREDICTIVE MONITORING AND THERMAL PROTECTION
DE MOTORES Y MÁQUINAS ELÉCTRICASOF MOTORS AND ELECTRICAL MACHINES
DESCRIPCIÓNDESCRIPTION
OBJETO DE LA INVENCIÓN El objeto de esta invención es proporcionar a la industria y a cualquier usuario de máquinas y motores eléctricos, un nuevo protector monitor confiable y preciso que proteja eficientemente a la producción que el motor o máquina ejecuten, permitiendo obtener el máximo rendimiento con el menor deterioro para el motor.OBJECT OF THE INVENTION The object of this invention is to provide to the industry and to any user of electric machines and motors, a new reliable and precise monitor protector that efficiently protects the production that the motor or machine executes, allowing to obtain the maximum performance with the Less deterioration for the engine.
Todos los motores y máquinas eléctricas cuando sufren una anomalía como puede ser: caída de fase, rodamiento forzado, sobre exigencias de trabajo, desbalance de voltaje, desalineamiento mecánico, etc., incrementan la temperatura del devanado, que por inercia térmica, este aumento se continua por un tiempo variable, aún después de que el motor haya sido desconectado, este dispositivo resuelve esta situación no deseada.All motors and electric machines when they suffer an anomaly such as: phase drop, forced bearing, on work demands, voltage imbalance, mechanical misalignment, etc., increase the winding temperature, which due to thermal inertia, this increase is continues for a variable time, even after the motor has been disconnected, this device resolves this unwanted situation.
Este nuevo aparato, siguiendo las normas IEC estándar, garantiza que la programación del paro del mismo, será en el momento correcto, ya que se adecúa a la norma específica del fabricante, ajustándose automáticamente después de ser programado, con las variables climatológicasThis new device, following the standard IEC standards, guarantees that the stoppage programming of the same will be at the right time, as it adapts to the manufacturer's specific standard, automatically adjusting after being programmed, with the weather variables
(temperatura y altura sobre el nivel del mar) del entorno del motor censado.(temperature and height above sea level) of the censored engine environment.
Este aparato mide la temperatura interior del motor o máquina, y la del medio ambiente que los rodea y compara la diferencia entre ambas, y como resultado, sube o baja el umbral de la desconexión.This device measures the internal temperature of the motor or machine, and that of the surrounding environment and compares the difference between the two, and as a result, the disconnection threshold rises or falls.
Dicho de otra manera, cada instante calcula la capacidad variable que tiene el medio ambiente para absorber la temperatura que el motor disipa.In other words, each moment calculates the variable capacity of the environment to absorb the temperature that the motor dissipates.
También, con una pantalla, muestra la temperatura más caliente de las bobinas, permitiendo anticipar y corregir cualquier anomalía detectada, cuando ésta comienza, y si por X circunstancia, no se verifica la lectura de la temperatura, llamará la atención del usuario con una alarma, alertándolo de un problema, antes de que automáticamente detenga a la maquina o motor, quedando después de la desconexión fija en la pantalla, la causa por la cual se ordeno el paro del suministro de electricidad al motor. Toda esta información, se transmite por un cable o inalámbricamente a la pantalla del equipo o a una computadora (según se instale).Also, with a screen, it shows the hottest temperature of the coils, allowing to anticipate and correct any anomaly detected, when it starts, and if by X circumstance, the temperature reading is not verified, it will call the attention of the user with an alarm, alerting him of a problem, before automatically stopping the machine or engine, remaining after the disconnection fixed on the screen, the cause for the which ordered the shutdown of the electricity supply to the motor. All this information is transmitted by a cable or wirelessly to the computer screen or to a computer (as installed).
Para la programación de la constante del limité de desconexión del aparato, se consideró como base comparativa la tabla IEC de clasificación térmica de devanados, tipo Y, A, E; B, F, H, de acuerdo a NEMA MG-I, así como la altura sobre el nivel del mar, donde el motor o aparato se fije, al igual que el resultado del análisis previo de la resistividad conductiva del devanado del motor realizado por el mismo aparato.For the programming of the device disconnection limit constant, the IEC winding thermal classification table, type Y, A, E, was considered as a comparative basis; B, F, H, according to NEMA MG-I, as well as the height above sea level, where the motor or apparatus is set, as well as the result of the previous analysis of the conductive resistivity of the motor winding performed by The same device.
ANTECEDENTESBACKGROUND
Debido a que en la actualidad existen diversos métodos de protección para máquinas y motores eléctricos, los cuales, de manera directa e indirecta, tratan de evitar el deterioro o la total destrucción de la máquina o motor a su cargo, y considerando que ninguno de ellos toma en cuenta en conjunto las variables ambientales relacionadas entre otras, con el estado de envejecimiento del motor en cuestión, reduciendo de esta manera la efectividad de protección ofrecidas por ellos, que además de la pérdida del motor, se afecta innecesariamente la producción Otro sector importante de máquinas y motores eléctricos, que hoy en día operan en la industria, no tienen protección alguna, y por lo mismo son un importante mercado a satisfacer con los sensores propuestos, los que se pueden instalar con relativa facilidad, los mismos, también pueden sustituir directamente a los termistores RTD, PTlOO, que se utilizan en algunos casos para este propósito, y que al sustituirse por los nuestros (KTYs), se mejoran sustancialmente los siguientes aspectos: bajo costo comparado con los RTDs,; alta sensibilidad, 5 Ohms por cada grado centígrado, comparado con los 0.39 Ohms por cada grado centígrado de los RTDs, por lo que hacen al presente desarrollo un atractivo sistema en la implementación de protección. El sensor propuesto, puede operar en el rango de temperatura de menos 40 grados centígrados, a más 300 grados centígrados, cubriendo el rango de todos los tipos de aislamientos térmicos (de Y hasta H), a demás el sensor que ocupamos, presenta mayor protección ante otras circunstancias adversas que pueden dañar irreversiblemente al el motor, particularizado por tener un enfoque más acorde con la realidad especifica de las condiciones que circundan al sitio donde el motor se implante.Because there are currently various methods of protection for electric machines and motors, which, directly and indirectly, try to avoid deterioration or the total destruction of the machine or motor under their charge, and considering that none of them Taken together into account the environmental variables related, among others, with the aging state of the engine in question, thus reducing the protection effectiveness offered by them, which in addition to the loss of the engine, production is unnecessarily affected. Another important sector of machines and electric motors, which nowadays operate in the industry, have no protection, and therefore they are an important market to satisfy with the proposed sensors, which can be installed with relative ease, they can also replace directly to RTD thermistors, PTlOO, which are used in some cases for this purpose, and which when replaced by the new stros (KTYs), the following aspects are substantially improved: low cost compared to RTDs; high sensitivity, 5 Ohms for each degree Celsius, compared to 0.39 Ohms for each degree Celsius of the RTDs, so which make the present development an attractive system in the implementation of protection. The proposed sensor, can operate in the temperature range of minus 40 degrees Celsius, to more than 300 degrees Celsius, covering the range of all types of thermal insulation (from Y to H), other than the sensor we occupy, presents greater protection in the face of other adverse circumstances that may irreversibly damage the engine, particularly by having a more consistent approach with the specific reality of the conditions surrounding the site where the engine is implanted.
Por estas razones y considerando que todas las causas de daños, no por golpe o explosión, de un motor eléctrico, se manifiestan finalmente por la elevación de temperatura de sus devanados eléctricos, los cuáles al rebasar el límite de resistencia del aislamiento térmico, son dañados irreversiblemente; por lo tanto se propone diseñar y construir un protector y monitor electrónico que estime las condiciones variables de temperatura ambiente y presión atmosférica que se relacionan entre sí, afectando el punto de fusión del aislante de las bobinas del motor o máquina, el cual satisfará con suficiencia real al mercado de motores y máquina eléctricas, que tengan deficiente protección térmica, o ninguna. For these reasons and considering that all causes of damage, not by blow or explosion, of an electric motor, are finally manifested by the temperature rise of its electric windings, which when exceeding the resistance limit of thermal insulation, are damaged irreversibly; therefore it is proposed to design and build an electronic protector and monitor that estimates the variable conditions of ambient temperature and atmospheric pressure that are related to each other, affecting the melting point of the motor or machine coil insulators, which will satisfy with sufficiency real to the market of electric motors and machines, which have poor thermal protection, or none.
BREVE DESCRIPCIÓN DE LAS FIGURAS Figura 1 diagrama esquemático de bloquesBRIEF DESCRIPTION OF THE FIGURES Figure 1 schematic block diagram
DESCRIPCIÓN DETALLADA DE LA INVENCIÓNDETAILED DESCRIPTION OF THE INVENTION
Los detalles característicos se muestran claramente en la siguiente descripción y en el dibujo anexo marcado como figura 1, un protector y monitor electrónico, para máquinas y motores eléctricos, el cual, estimará la temperatura ambiente, la presión atmosférica y la resistividad térmica del devanado de las bobinas, para calcular la temperatura máxima conveniente permitida por el tipo de aislante instalado en las mencionadas bobinasThe characteristic details are clearly shown in the following description and in the attached drawing marked as figure 1, an electronic protector and monitor, for machines and electric motors, which will estimate the ambient temperature, atmospheric pressure and thermal resistivity of the winding of the coils, to calculate the maximum convenient temperature allowed by the type of insulator installed in the said coils
Mismas que se censan y protegen, con las siguientes características.Same as censored and protected, with the following characteristics.
Mostrará en una pantalla luminosa la temperatura del devanado más caliente, mediante unos sensores de temperatura ubicados entre si, máximo a 120° mecánicos, en el interior del mencionado devanado eléctrico. El rango de temperatura abarcará a la resistividad térmica de todos los tipos de barnices aislantes para bobinas existentes en el mercado, con una resolución de I0C, misma que se mostrará en la pantalla y otro dígito indicara la escala de temperatura usada, ya sea en centígrados o grados Fahrenheit. Mediante un programa de control y de acuerdo al tipo de clasificación de la resistencia térmica del barniz instalado en las bobinas del motor o máquina, se ingresará al aparato la información necesaria para su operación.It will show on a luminous screen the temperature of the hottest winding, by means of temperature sensors located between them, maximum at 120 ° mechanical, inside said electrical winding. The temperature range will cover the thermal resistivity of all types of insulating varnishes for existing coils in the market, with a resolution of I 0 C, which will be shown on the screen and another digit will indicate the temperature scale used, either in centigrade or degrees Fahrenheit. By means of a control program and according to the type of classification of the thermal resistance of the varnish installed in the motor or machine coils, the necessary information for its operation will be entered into the apparatus.
La figura 1 es un diagrama esquemático de bloques, que describe claramente la integración de los elementos de un protector monitor térmico para motores y máquinas de inducción, el cual estima la presión atmosférica y la temperatura ambiente que rodean al motor para calcular la elevación de temperatura máxima en los devanados eléctricos. Una fuente de potencia trifásica (10) que se encarga de suministrar la emergía eléctrica al motor (12) o máquinas de inducción. El contactor electromecánico (11), el cual, transfiere a través de su bobina de control, la energía de la fuente trifásica de potencia (10), hacia el motor o maquina de inducción (12). El sistema de control, se basa en el microprocesador (13), las acciones de control y protección del motor (12), se dan mediante 3 o más sensores térmicos KTYS (14), los cuales, cada uno, se distribuyen máximo a 120° mecánicos dentro de los devanados del estator del motor (12); se censará la temperatura más caliente de los 3 o más devanados, la cual será mostrada a través de una pantalla luminosa (15); mediante un teclado de programación (16), será ingresado el límite de temperatura máxima permitida, de acuerdo al tipo de clasificación térmica del motor (12) y a la presión atmosférica donde se instale dicho motor (12); además será almacenada de manera permanente en una memoria serial (17); un cuarto sensor térmico (18) se usara para medir la temperatura ambiente que rodea al motor (12), y esta será utilizada, por el sistema de control (13), para calcular, mediante una tabla que estima la temperatura ambiente que rodea al motor (12), el límite máximo permisible en los devanados del motor (12); un sistema acondicionador de señal a 2 hilos (19), será el encargado de energizar a los sensores térmicos (14 y 18), los cuales, debido a su naturaleza, permiten simplificar de manera importante el diseño del sistema acondicionador de señal (19).Figure 1 is a schematic block diagram, which clearly describes the integration of the elements of a thermal monitor protector for motors and induction machines, which estimates the atmospheric pressure and the ambient temperature surrounding the motor to calculate the temperature rise maximum in electric windings. A three-phase power source (10) that is responsible for supplying the electric emergency to the motor (12) or induction machines. He electromechanical contactor (11), which, through its control coil, transfers the energy from the three-phase power source (10), to the motor or induction machine (12). The control system, based on the microprocessor (13), the motor control and protection actions (12), are given by 3 or more KTYS thermal sensors (14), which, each, are distributed at a maximum of 120 ° mechanics inside the motor stator windings (12); the hottest temperature of the 3 or more windings will be counted, which will be shown through a luminous screen (15); by means of a programming keyboard (16), the maximum allowed temperature limit will be entered, according to the type of thermal classification of the motor (12) and the atmospheric pressure where said motor is installed (12); it will also be stored permanently in a serial memory (17); a fourth thermal sensor (18) will be used to measure the ambient temperature surrounding the motor (12), and this will be used, by the control system (13), to calculate, using a table that estimates the ambient temperature surrounding the motor motor (12), the maximum permissible limit on motor windings (12); a 2-wire signal conditioning system (19), will be responsible for energizing the thermal sensors (14 and 18), which, due to their nature, significantly simplify the design of the signal conditioning system (19) .
Un convertidor análogo digital tipo serial o equivalente, será la interface entre el acondicionador de señal a 2 hilos (19) y el sistema de control basado en un micro procesador (13): cuando cualquiera de las temperaturas internas de los devanados del motor (12) haya alcanzado niveles peligrosos que rebasen el 90% de los grados de temperatura máxima permitida por el tipo de aislante, el sistema de control (13), activará una alarma sonora y/o visible (20); la que se desactivará solamente si la temperatura disminuye por abajo del 90%, antes mencionado; cuando cualquiera de las 3 temperaturas de los devanados internos del motor (12) halla alcanzado el límite de temperatura máximo, el sistema de control (13) desactivará el suministro de energía proveniente de la fuente trifásica de potencia (10), mediante la desnergisación de la bobina de control del contactor (11) a través del relevador (21), aunque la temperatura que originó la desconexión de la fuente trifásica de potencia (10) hacia el motor (12) haya descendido por debajo del valor máximo permitido, el sistema de control (13) hará la reconexión únicamente cuando este haya sido restablecido manualmente, nuestra invención también cuenta con una protección de corto circuito dada por humedad en el arranque del motor (12), para evitar la destrucción del motor que se encuentre húmedo o sumergido en agua, mediante un sensor de baja conductividad eléctrica conectado entre el barniz aislante del devanado de las bobinas y la carcasa del motor (12), el microprocesador (13), antes de energizar la bobina del arrancador (11) manda un pequeño impulso de bajo amperaje y voltaje, para medir la presencia de conductividad, sinónimo entre otros de agua o carbono, si la presencia de conductividad es positiva, el relevador (21) no energizara la bobina del contactor (11) evitándose de esta manera la eminente destrucción del motor (12), para que el motor (12) pueda arrancar, se deberá eliminar todo rastro de humedad; el monitor en mención, cuenta con otra protección para desconecta automáticamente y sin previo aviso al motor (12), para que cuando por la razón que fuese, este quede bloqueado (rodamiento pegado), el microprocesador (13) determinara a través del sensor más caliente (14) la ocurrencia de una derivada térmica de transciente súbita de cambio de temperatura, respecto a un umbral preestablecido de tiempo, que presente un comportamiento de carácter asintótico. A digital analog converter, serial or equivalent, will be the interface between the 2-wire signal conditioner (19) and the control system based on a microprocessor (13): when any of the internal temperatures of the motor windings (12 ) has reached dangerous levels that exceed 90% of the maximum temperature degrees allowed by the type of insulator, the control system (13) will activate an audible and / or visible alarm (20); which will be deactivated only if the temperature drops below 90%, mentioned above; When any of the 3 temperatures of the motor's internal windings (12) has reached the maximum temperature limit, the control system (13) will deactivate the power supply from the three-phase power source (10), by de-energizing the contactor control coil (11) through the relay (21), although the temperature that caused the disconnection of the three-phase power source (10) towards the motor (12) has fallen below the maximum allowed value, the control system (13) will reconnect only when it has been manually reset, our invention also has a protection of short circuit given by humidity at the start of the motor (12), to avoid the destruction of the motor that is wet or submerged in water, by means of a sensor of low electrical conductivity connected between the insulating varnish of the winding of the coils and the housing of the motor (12), the microprocessor (13), before energizing the starter coil (11) sends a small impulse of low amperage and voltage, to measure the presence of conductivity, synonymous among others of water or carbon, if the presence of conductivity is positive, the relay (21) will not energize the contactor coil (11) thus avoiding the eminent destruction of the motor (12), so that the motor (12) can to start, all traces of moisture must be removed; the monitor in question, has another protection to automatically disconnect and without prior notice to the motor (12), so that when for any reason, it is blocked (bearing stuck), the microprocessor (13) will determine through the sensor more warm (14) the occurrence of a thermal derivative of a sudden temperature change transient, with respect to a pre-established threshold of time, presenting an asymptotic behavior.

Claims

REIVINDICACIONESHabiendo descrito suficiente mi invención, considero como una novedad y por lo tanto reclamo como de mi exclusiva propiedad, lo contenido en las siguientes cláusulas: CLAIMS Having described my invention sufficiently, I consider as a novelty and therefore claim as my exclusive property, what is contained in the following clauses:
1.- Dispositivo para el monitoreo predictivo y protección térmica de motores y máquinas eléctricas caracterizado, porque posee un grupo de sensores térmicos que transmiten información de los devanados del estator y del medio ambiente circundante a un microprocesador inteligente, que a través de un convertidor análogo, la interpreta como valores estándar de temperatura, mismos que coteja, mediante un programa de control inteligente del aparato, junto con el valor correspondiente a la altura de instalación respecto al nivel del mar, temperatura de disparo de alarma y demás informaciones que se incorporarán en la memoria serial organizada para incrementar o disminuir automáticamente la temperatura cambiante de desconexión del motor, según vallan resultado las variaciones climatológicas circunstanciales.1.- Device for predictive monitoring and thermal protection of electric motors and machines characterized, because it has a group of thermal sensors that transmit information of the stator windings and the surrounding environment to an intelligent microprocessor, which through an analog converter , interprets it as standard temperature values, which it checks, by means of an intelligent control program of the device, together with the value corresponding to the installation height with respect to sea level, alarm trigger temperature and other information that will be incorporated into Serial memory organized to automatically increase or decrease the changing engine shutdown temperature, depending on the circumstantial climatic variations.
2.- Dispositivo para el monitoreo predictivo y protección térmica de motores y máquinas eléctricas caracterizado, porque posee un protector monitor térmico que muestra en una pantalla digital luminosa la temperatura de la bobina más caliente del estator, así como la del medio ambiente externo circundante al motor que protege y censa. 2.- Device for predictive monitoring and thermal protection of electric motors and machines characterized, because it has a protective thermal monitor that shows on a bright digital display the temperature of the hottest coil of the stator, as well as that of the external environment surrounding the engine that protects and census.
3.- Dispositivo para el monitoreo predictivo y protección térmica de motores y máquinas eléctricas caracterizado, porque posee una protección térmica para motores eléctricos particularizada porque desconecta al motor usando un relevador conectado en serie a la bobina del arrancador cuando alcanza el límite variable preestablecido, o cuando el programa instalado e su memoria considera que la rapidez de elevación térmica excede drásticamente los niveles pertinentes de incremento. 3.- Device for predictive monitoring and thermal protection of electric motors and machines characterized, because it has a particular thermal protection for electric motors because it disconnects the motor using a relay connected in series to the starter coil when it reaches the preset variable limit, or when the program installed in its memory considers that the speed of thermal elevation dramatically exceeds the relevant levels of increase.
4.- Dispositivo para el monitoreo predictivo y protección térmica de motores y máquinas eléctricas caracterizado, porque el protector está diseñado con un mecanismo que suministra un pulso de bajo voltaje y amperaje para medir la conductividad superficial del aislante del estator por carbonización o humedad condicionando el arranque a un nivel permisible de rigidez dieléctrica.4.- Device for predictive monitoring and thermal protection of electric motors and machines, characterized in that the protector is designed with a mechanism that supplies a low voltage and amperage pulse to measure the surface conductivity of the stator insulator by carbonization or humidity conditioning the starting at an allowable level of dielectric strength.
5.- Dispositivo para el monitoreo predictivo y protección térmica de motores y máquinas eléctricas caracterizado, por que dicho protector está constituido por las cualidades particulares de sus sensores térmicos (KTY 's), basado en ellos su esquema único de transmisión y recepción a 2 hilos cuyo alcance supera los 100 metros de distancia sin menoscabo a su eficiencia.5.- Device for the predictive monitoring and thermal protection of electric motors and machines characterized in that said protector is constituted by the particular qualities of its thermal sensors (KTY 's), based on them its unique transmission and reception scheme at 2 threads whose range exceeds 100 meters away without affecting its efficiency.
6.- Dispositivo para el monitoreo predictivo y protección térmica de motores y máquinas eléctricas caracterizado, porque de acuerdo al programa instalado en su memoria muestra, automáticamente, la causa que originaron cualquier desconexión del motor. 6.- Device for predictive monitoring and thermal protection of electric motors and machines characterized, because according to the program installed in its memory automatically shows the cause that caused any disconnection of the motor.
PCT/MX2010/000046 2009-05-25 2010-05-25 Device for the predictive monitoring and thermal protection of motors and electrical machines WO2010137935A1 (en)

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MXMX/A/2009/005501 2009-05-25
MX2009005501A MX2009005501A (en) 2009-05-25 2009-05-25 Device for the predictive monitoring and thermal protection of motors and electrical machines.

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4410851A (en) * 1980-04-21 1983-10-18 Ateliers De Constructions Electriques De Charleroi Method for the detection of insufficient dielectric strength of coil insulation
JPH0284010A (en) * 1988-09-16 1990-03-26 Toshiba Corp Overload protector
JPH05207643A (en) * 1992-01-24 1993-08-13 Mitsubishi Electric Corp Motor operating system
JPH05268719A (en) * 1992-03-19 1993-10-15 Hitachi Ltd Winding deterioration monitoring device of induction motor
JPH05316637A (en) * 1992-05-06 1993-11-26 Toshiba Corp Motor controller
US5446362A (en) * 1994-06-21 1995-08-29 General Electric Company Thermal protection for AC traction motors using temperature estimations to calculate torque limits and blower speed requirements
FR2841398A1 (en) * 2002-06-25 2003-12-26 Henri Gilbert Control of an electric motor used in hazardous environment, uses sensors in motor to provide data so winding temperature and hot-spot or surface temperature can be calculated
JP2006162481A (en) * 2004-12-08 2006-06-22 Tokuyama Corp Diagnostic method of degradation for motor
JP2006333686A (en) * 2005-05-30 2006-12-07 Mitsubishi Electric Corp Linear motor control unit

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4410851A (en) * 1980-04-21 1983-10-18 Ateliers De Constructions Electriques De Charleroi Method for the detection of insufficient dielectric strength of coil insulation
JPH0284010A (en) * 1988-09-16 1990-03-26 Toshiba Corp Overload protector
JPH05207643A (en) * 1992-01-24 1993-08-13 Mitsubishi Electric Corp Motor operating system
JPH05268719A (en) * 1992-03-19 1993-10-15 Hitachi Ltd Winding deterioration monitoring device of induction motor
JPH05316637A (en) * 1992-05-06 1993-11-26 Toshiba Corp Motor controller
US5446362A (en) * 1994-06-21 1995-08-29 General Electric Company Thermal protection for AC traction motors using temperature estimations to calculate torque limits and blower speed requirements
FR2841398A1 (en) * 2002-06-25 2003-12-26 Henri Gilbert Control of an electric motor used in hazardous environment, uses sensors in motor to provide data so winding temperature and hot-spot or surface temperature can be calculated
JP2006162481A (en) * 2004-12-08 2006-06-22 Tokuyama Corp Diagnostic method of degradation for motor
JP2006333686A (en) * 2005-05-30 2006-12-07 Mitsubishi Electric Corp Linear motor control unit

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