发明授权
- 专利标题: Brushless D.C. motor
- 专利标题(中): 无刷直流电机
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申请号: US150202申请日: 1980-05-15
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公开(公告)号: US4365187A公开(公告)日: 1982-12-21
- 发明人: Wharton McDaniel , Fred A. Brown , Donald Thompson
- 申请人: Wharton McDaniel , Fred A. Brown , Donald Thompson
- 申请人地址: NY Woodstock
- 专利权人: Rotron Incorporated
- 当前专利权人: Rotron Incorporated
- 当前专利权人地址: NY Woodstock
- 主分类号: H02K29/08
- IPC分类号: H02K29/08 ; H02P6/08 ; H02K29/00
摘要:
A D.C. brushless motor with a permanent magnet rotor employs Hall switches to effect commutation. The rotor magnets are of a greater axial length than the stator stack and the Hall switches are mounted on a printed circuit panel within the motor frame so as to be actuated by the fringe flux from the portion of a rotor magnet extending beyond the stator stack. The pole faces of the stator stack are stepped to assure proper starting and direction of rotation. A voltage regulating circuit forming part of the commutating arrangement on the printed circuit panel enables the same circuit to be used for a range of stator energizing voltages.