发明授权
US07902713B2 Self-starting type permanent magnet synchronous motor and a compressor using the same
有权
自启型永磁同步电动机和使用该永磁同步电动机的压缩机
- 专利标题: Self-starting type permanent magnet synchronous motor and a compressor using the same
- 专利标题(中): 自启型永磁同步电动机和使用该永磁同步电动机的压缩机
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申请号: US12336647申请日: 2008-12-17
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公开(公告)号: US07902713B2公开(公告)日: 2011-03-08
- 发明人: Satoshi Kikuchi , Hiroyuki Mikami , Akeshi Takahashi , Tomio Yoshikawa , Keiji Tanaka , Masashi Miyake , Baiying Huang , Masaru Ohtahara , Kenji Tojo , Hideyuki Kumakura
- 申请人: Satoshi Kikuchi , Hiroyuki Mikami , Akeshi Takahashi , Tomio Yoshikawa , Keiji Tanaka , Masashi Miyake , Baiying Huang , Masaru Ohtahara , Kenji Tojo , Hideyuki Kumakura
- 申请人地址: JP Tokyo
- 专利权人: Hitachi Appliances, Inc.
- 当前专利权人: Hitachi Appliances, Inc.
- 当前专利权人地址: JP Tokyo
- 代理机构: Antonelli, Terry, Stout & Kraus, LLP.
- 优先权: JP2007-329483 20071221
- 主分类号: H02K21/12
- IPC分类号: H02K21/12 ; H02K21/14 ; H02K1/27
摘要:
A self-starting type permanent magnet synchronous motor comprises a stator and a rotor. The rotor comprises a rotor core having a plurality of slots provided in an outer periphery thereof and a cage winding comprising conductive bars embedded in the slots and conductive end rings that short-circuit the conductive bars on both end faces of the bars in an axial direction thereof. The rotor core comprises at least one magnet insertion hole arranged on an inner peripheral side from the slots, and at least one permanent magnet embedded in the at least one magnet insertion hole. When a pole center axis is denoted as a d-axis and an axis deviating from the pole center axis by an electrical angle 90° is denoted as a q-axis, a flux content generated by the cage winding during start-up becomes maximal in the vicinity of and on one of the d-axis and the q-axis.