发明授权
US07791295B2 Field weakening control apparatus for permanent magnet motor and electric power steering using same
有权
用于永磁电动机的弱磁控制装置和使用它的电动助力转向装置
- 专利标题: Field weakening control apparatus for permanent magnet motor and electric power steering using same
- 专利标题(中): 用于永磁电动机的弱磁控制装置和使用它的电动助力转向装置
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申请号: US12108676申请日: 2008-04-24
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公开(公告)号: US07791295B2公开(公告)日: 2010-09-07
- 发明人: Kentaro Oi , Kazuaki Tobari , Yoshitaka Iwaji , Mitsuo Sasaki , Tatsuo Matsumura
- 申请人: Kentaro Oi , Kazuaki Tobari , Yoshitaka Iwaji , Mitsuo Sasaki , Tatsuo Matsumura
- 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: JP2007-114971 20070425
- 主分类号: H02P3/18
- IPC分类号: H02P3/18 ; H02P5/28 ; H02P7/36
摘要:
A motor control apparatus which controls an output voltage reference for an inverter driving a permanent magnet synchronous motor based on d-axis and q-axis current references, d-axis and q-axis current detected values, and a computed frequency value. When a torque reference specifying torque greater than maximum torque that the motor can output is input, a limit value for a phase angle that is a deviation between a rotation phase reference of control and a rotation phase value of the motor is varied depending on a quantity of the predetermined state.
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