发明授权
- 专利标题: Energy-saving controller for three-phase induction motors
- 专利标题(中): 三相异步电动机节能控制器
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申请号: US12379394申请日: 2009-02-20
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公开(公告)号: US08217618B2公开(公告)日: 2012-07-10
- 发明人: Ka Wai Eric Cheng , Xiangdang Xue
- 申请人: Ka Wai Eric Cheng , Xiangdang Xue
- 申请人地址: HK Hung Hom, Kowloon
- 专利权人: The Hong Kong Polytechnic University
- 当前专利权人: The Hong Kong Polytechnic University
- 当前专利权人地址: HK Hung Hom, Kowloon
- 代理机构: The Hong Kong Polytechnic University
- 主分类号: H02P3/18
- IPC分类号: H02P3/18

摘要:
The present invention relates to an energy-saving system for three-phase induction motors and is based on the principle of variable voltage control at constant speed. It is composed of a microprocessor, exampling circuit, sensing circuit, acquiring circuit, firing circuit, and AC to AC converter. The system is to automatically adjust the voltage to the induction motor with the variation in the motor load, in order to obtain high operating power factor and efficiency. The system will result in considerable energy-savings when a three-phase induction motor runs under constant light-load or variable-load with low duty ratio.
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