发明授权
- 专利标题: Switching system for controlling the starting of an electrical motor
- 专利标题(中): 用于控制电动机启动的开关系统
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申请号: US11916970申请日: 2006-06-08
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公开(公告)号: US07652440B2公开(公告)日: 2010-01-26
- 发明人: Abhishek Singh
- 申请人: Abhishek Singh
- 代理机构: Banner & Witcoff, Ltd.
- 优先权: IN1490/DEL/2005 20050609
- 国际申请: PCT/IN2006/000194 WO 20060608
- 国际公布: WO2006/131937 WO 20061214
- 主分类号: H02P6/04
- IPC分类号: H02P6/04
摘要:
A low cost switching system for an electrical motor, which is speed sensitive, direction of rotation insensitive, load insensitive and voltage fluctuation insensitive. The switch contains a power supply, a control circuit, a zero cross detector circuit, a triggering circuit and an electronic switch to provide the switching action. A time delay hysteresis inducement circuit is provided in the switching system to energized and deenergized the capacitor at a predetermined synchronous speed of the motor. The switching system first checks the speed of the motor before reenergizing the start capacitor, which increases the life of the motor. The switching system operates in high temperature range and regardless the value of the capacitor used.
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