Affiliations: [a] National Local Joint Engineering Research Center of Intelligent Power Integration Technology for Electric Vehicles, Shandong University of Technology, Zibo, China
Correspondence:
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Corresponding author: Liwei Shi, National Local Joint Engineering Research Center of Intelligent Power Integration Technology for Electric Vehicles, Shandong University of Technology, Zibo, China. E-mail: Liwei10@nuaa.edu.cn
Abstract: The field winding of conventional multiphase doubly salient electro-magnetic generator is wound across multiple stator poles. There is a problem that the flux paths of the respective phases are not completely symmetrical. A novel E-core stator was proposed, the basic topology of the multi-phase E-core doubly salient electro-magnetic generator (E-core DSEG) with symmetrical phase magnetic circuits is derived by using the electrical formulas. This establishes a theoretical basis for the design of multiphase E-core DSEG. Based on the finite element simulation software, the static characteristics of multi-phase E-core DSEG were analyzed, including magnetic field distribution no-load electromotive force, flux linkage, self-inductance of field winding, cogging torque and so on. Finally, a prototype of three phases 18/20-pole generator was made and tested. The rationality of theoretical analysis and generator topology was verified by simulation and experiment.
Keywords: DSEG, short circuit, multiphase, electromagnetic characteristic, E-core stator
