| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a controller of a motor in which operation conditions of respective motors are changed by considering a difference of an operation state such as loss and a temperature and a total loss in a plurality of the motors can be reduced. <P>SOLUTION: The controller is provided with a first motor operation state calculator 161 and a second motor operation state calculator 162 which calculate estimation values of losses which occur when the first motor 1a and the second motor 1b are driven, and a DC voltage control unit 160 performing supply voltage update processing for updating voltages of DC power supplied to inverters 62a and 62b by a DC-DC converter 151 on the motor whose estimation value of loss becomes maximum and reducing a difference between a phase voltage of a synthetic vector of an inter-terminal voltage of the motor and a target voltage which is set in accordance with an output voltage of the DC-DC converter 151. <P>COPYRIGHT: (C)2008,JPO&INPIT |
