发明授权
- 专利标题: Controlling method and apparatus for actuating induction motor
- 专利标题(中): 感应电动机的控制方法和装置
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申请号: US971969申请日: 1993-02-19
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公开(公告)号: US5352964A公开(公告)日: 1994-10-04
- 发明人: Kosei Nakamura , Yukio Katsuzawa , Yasuyuki Nakazawa
- 申请人: Kosei Nakamura , Yukio Katsuzawa , Yasuyuki Nakazawa
- 申请人地址: JPX Yamanashi
- 专利权人: Fanuc Ltd.
- 当前专利权人: Fanuc Ltd.
- 当前专利权人地址: JPX Yamanashi
- 优先权: JPX3-191293 19910705
- 主分类号: H02K3/28
- IPC分类号: H02K3/28 ; H02P23/00 ; H02P7/36
摘要:
A control method and apparatus for actuating an induction motor which is capable of generating a sufficiently large output in a wide speed region. In such an induction motor, each of Y-connection phase windings of the induction motor is divided into two split windings 5t and 3t at a predetermined split ratio (for example, 5:3). When a rotational speed of the induction motor is in a low speed region, only the changeover switch MC2 is turned on to supply exciting current to both of the split windings 5t and 3t. When the rotational speed of the induction motor is in a middle speed region, only the changeover switch MC3 is turned on to exclusively supply exciting current to the split windings 5t. Furthermore, when the rotational speed of the induction motor is in a high speed region, only the changeover switch MC1 is turned on to exclusively supply exciting current to the split windings 3t. With this arrangement, three different numbers of turns can selectively be used with respect to each phase winding so that relatively large number of turns can be used for the rotation in the low speed region, while relatively small number of turns can be used for the rotation in the high speed region in order to accomplish the desired control the actuation of the induction motor.
公开/授权文献
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