| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric-motor drive system that can reduce noise coming in a power source side. <P>SOLUTION: The electric-motor drive system comprises: an inverter device 100 including a plurality of switching elements connected to a power-source line; an electric motor device 200 driven by an AC voltage outputted from the inverter device 100; an LC filter circuit 300 inserted between the inverter device 100 and the electric motor device 200; a cooling body 400 that is formed of a conductive member and fixed with the plurality of switching elements; and a series circuit composed of a capacitor and a resistance inserted between power-source-line side terminals of the switching elements and the cooling body 400. The LC filter circuit 300 includes: an inductor 310 or the like inserted in a power supply line 202 or the like for supplying an operating power from the inverter device 100 to the electric motor 200; and a capacitor 320 or the like having one ends connected to one ends of the inductor 310 or the like and the other ends connected to the cooling body 400. <P>COPYRIGHT: (C)2013,JPO&INPIT |
