| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily attain further reduction in the scale of a device or the cost, in power conversion equipment. <P>SOLUTION: This power conversion equipment is equipped with a three-phase inverter 1 which outputs a three-phase AC; single-phase inverters 2a-2c which output a single-phase AC and are connected to each phase output end of the three-phase inverter 1; a three-phase PWM circuit 4 which generates and outputs a three-phase PWM signal being a control signal to the three-phase inverter 1, based on a three-phase voltage command; an average computer 6, which levels the three-phase PWM signals in operation cycles of the single-phase inverters 2a-2c; and a single-phase PWM circuit 5 which generates a single-phase PWM signal being a control signal to the single-phase inverters 2a-2c, based on the differential output between the three-phase voltage command and the output of the average computer 6. <P>COPYRIGHT: (C)2009,JPO&INPIT |
