A NEW DESIGN PRINCIPLE FOR POLE-CHANGING WINDING-THE THREE-EQUATION PRINCIPLE

CHENGSHENG ZHANG Department of Electrical Power Engineering, Huazhong University of Science and Technology, Wuhan, PRC

JIE YANG Department of Electrical Power Engineering, Huazhong University of Science and Technology, Wuhan, PRC

XUEHUA CHEN Department of Electrical Power Engineering, Huazhong University of Science and Technology, Wuhan, PRC

YOUGUONG GUO Department of Electrical Power Engineering, Huazhong University of Science and Technology, Wuhan, PRC

ABSTRACT

This paper presents a new design principle called the “Three-Equation Principle” and a new design method called “ Vector of Slot Concentrated Method” for pole-changing winding with ▵/ ▵ - or 3Y + 2Y/3Y -connection. This principle has been used for single-winding 2-speed induction motors, some of which have been operated industrially. Practical applications of this design principle have proved its superiority.

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A NEW DESIGN PRINCIPLE FOR POLE-CHANGING WINDING-THE THREE-EQUATION PRINCIPLE

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A NEW DESIGN PRINCIPLE FOR POLE-CHANGING WINDING-THE THREE-EQUATION PRINCIPLE

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