| 摘要 |
<P>PROBLEM TO BE SOLVED: To enhance the voltage stabilizing effect of the power line of a system which drives an AC motor by a rectangular wave control system via an inverter by this system voltage, by boosting the voltage of a DC power source with a step-up converter and generating system voltage in a power line. <P>SOLUTION: A motor controller 37 executes system voltage stabilizing control to suppress the ripple of system voltage by controlling the input power of an MG unit 30. At that time, it stabilizes torque control and input power control by controlling the torque control of the AC motor 14 and the input power control of the MG unit 30 independently. Furthermore, it executes torque ripple zero control to correct the phase of the rectangular wave voltage so that the deviation between first estimated torque obtained from a detected current vector for torque control of the AC motor 14 and the second estimated torque obtained from a motor detected current vector may be almost zero, whereby it prevents uncomfortable torque ripple at transition of input power control of the MG unit 30. <P>COPYRIGHT: (C)2009,JPO&INPIT |
