| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress the controllability of an inverter from lowering in switching control of an inverter by pulse width modulation control to control of the inverter by rectangular wave control. <P>SOLUTION: A voltage phase command θ* is set so that a voltage phase command variation Δθs as a difference between a current value and a previous value of a voltage phase command θs* is not more than a variation allowance θslim, regardless of whether an inverter should be controlled by PWM control or rectangular wave control (S330-S430) and the next switching electrical angle θsw and/or a switching pattern is set (S440, S450). <P>COPYRIGHT: (C)2013,JPO&INPIT |
