POWER CONVERSION SYSTEM AND CONTROL METHOD FOR AUXILIARY MACHINERY

摘要

PROBLEM TO BE SOLVED: To provide a nobel battery system in a hybrid electric vehicle.SOLUTION: An auxiliary power unit 40 for supplying electric power to auxiliary machinery 30 is structured so that a battery device 124 is connected with a neutral point on the primary side of an output transformer 108 which a power converter 100 serving as a stationary inverter (SIV) has. A control section 130 controls a DC component (zero phase voltage) V0 of an output voltage of an inverter section 104 by bias-controlling phase voltage commands (Vu,Vv,Vw) for the inverter section 104 according to a filter capacitor voltage Vfc which is an input voltage of an inverter section 104 and controls charge and discharge of the battery device 124.