A controller is capable of executing direct couple control that directly couples a first power device and a second power device without causing a DC/DC converter to convert voltage. During the direct couple control, a drive signal that causes no voltage conversion is intermittently output to at least...http://www.google.com.au/patents/US7969039?utm_source=gb-gplus-sharePatent US7969039 - Method of controlling fuel cell vehicle and method of controlling DC/DC converter apparatus
