| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem wherein the installation of a smoothing capacitor 18 in each inverter INVa, INVb, INVc results in a larger size of a power conversion device. <P>SOLUTION: A power supply device PSC having smoothing capacitors 18 and normal mode choke coils 16 is shared by the inverters INVa, INVb, INVc. The inverters INVa, INVb, INVc are operated by conversion microcomputers 34a, 34b, 34c, respectively. Operation signals are generated by triangular wave comparison PWM processing. As for inverters INV1, INV2, INV3, different carrier frequencies are set and the set carrier frequencies are subjected to spread spectrum processing. <P>COPYRIGHT: (C)2013,JPO&INPIT |
