发明名称 |
Rotary electric machine driving device |
摘要 |
A rotary electric machine driving device that drives and controls an alternating-current rotary electric machine, the rotary electric machine driving device including: an inverter that is electrically interposed between a direct-current power supply and the rotary electric machine, and converts electric power between a direct current and an alternating current; a smoothing capacitor that is electrically interposed between the direct-current power supply and the inverter, and is connected between a positive pole and a negative pole on a direct-current side of the inverter; and an inverter control unit that controls switching of a switching element of the inverter according to a predefined switching frequency. |
申请公布号 |
US9543885(B2) |
申请公布日期 |
2017.01.10 |
申请号 |
US201414761802 |
申请日期 |
2014.03.28 |
申请人 |
AISIN AW CO., LTD. |
发明人 |
Saha Subrata;Shimada Arinori |
分类号 |
H02P6/00;H02P27/08;H02P27/06;B60L1/00 |
主分类号 |
H02P6/00 |
代理机构 |
Oliff PLC |
代理人 |
Oliff PLC |
主权项 |
1. A rotary electric machine driving device that drives and controls an alternating-current rotary electric machine, the rotary electric machine driving device comprising:
an inverter that is electrically interposed between a direct-current power supply and the rotary electric machine, and converts electric power between a direct current and an alternating current; a smoothing capacitor that is electrically interposed between the direct-current power supply and the inverter, and is connected between a positive pole and a negative pole on a direct-current side of the inverter; and an inverter control unit that controls switching of a switching element of the inverter according to a predefined switching frequency, wherein the inverter control unit sets the switching frequency to a value varying corresponding to both torque and a rotating speed of the rotary electric machine, according to pulsation amplitude of a system voltage that is a voltage on the direct-current side of the inverter and pulsation amplitude of a power supply current that is a current flowing through the direct-current power supply, and the inverter control unit sets the switching frequency higher as rotary electric machine power or a modulation factor increases, the rotary electric machine power being calculated by multiplying the torque by the rotating speed of the rotary electric machine, the modulation factor representing a ratio of an effective value of an alternating-current voltage command value to a system voltage that is a voltage on the direct-current side of the inverter. |
地址 |
Anjo JP |