发明授权
- 专利标题: Motor driving system and motor driving method
- 专利标题(中): 电机驱动系统及电机驱动方式
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申请号: US12108538申请日: 2008-04-24
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公开(公告)号: US07710053B2公开(公告)日: 2010-05-04
- 发明人: Daisuke Tan , Hirohisa Satomi , Shigetoshi Okamatsu
- 申请人: Daisuke Tan , Hirohisa Satomi , Shigetoshi Okamatsu
- 申请人地址: JP Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Antonelli, Terry, Stout & Kraus, LLP.
- 优先权: JP2007-114587 20070424
- 主分类号: H02P23/00
- IPC分类号: H02P23/00
摘要:
A motor driving apparatus including inverter apparatuses, inverter control circuits, and a plurality of inverter control apparatuses for performing variable-speed driving of a single motor, breakers each of which being provided between each inverter apparatus and the motor, the inverter control circuits being connected in parallel to each other. Here, a motor rotation frequency/phase detection circuit of each inverter control circuit is set up on a closer side to the motor than the breakers, then frequency and phase of a terminal voltage at the motor are detected and inputted into failure-time input frequency/phase setting circuits regardless of close/open of each breaker. This feature allows computation by the failure-time input frequency/phase setting circuits to be carried out at all times, thereby making it possible to shorten a computation time needed for computing inverter-apparatus start frequency/phase.
公开/授权文献
- US20080265832A1 MOTOR DRIVING SYSTEM AND MOTOR DRIVING METHOD 公开/授权日:2008-10-30