| 摘要 |
<P>PROBLEM TO BE SOLVED: To enhance quietness of an inverter by efficiently suppressing the noise of the inverter while switching a plurality of carrier frequencies during its operation, in an inverter controller. <P>SOLUTION: A rotary electric machine control system 10 includes a battery device 12 as a power supply circuit, a voltage converter 16, inverters 20, 22, two rotary electric machines 24, 26 and a controller 40, wherein the battery device 12 is charge-controlled from an external power source 60. The controller 40 includes: a switching frequency setting unit 50 for setting the switching frequency of each carrier frequency for every operation condition of the inverter; and a carrier frequency switching unit 48 for switching in order each carrier frequency during the operation of the inverters according to the set switching frequency so as to set a plurality kinds of carrier frequencies to be used for the drive-controlling the inverters 20, 22 and to flatten the synthetic frequency distribution characteristic including the side-band wave in each carrier frequency. <P>COPYRIGHT: (C)2010,JPO&INPIT |
