Open-Circuit Fault-Tolerant Characteristics of a New Four-Phase Doubly Salient Electro-Magnetic Generator

Abstract

In order to improve the reliability of a more sustainable mobility generator, a four-phase Doubly Salient Electro-Magnetic Generator (DSEG) and its phase-isolated rectifier are proposed in this paper. The mathematical model of the machine and fault-tolerant rectifiers is proposed, which indicates that the four-phase fault-tolerant DSEG should have symmetric phases. With the asymmetry analysis of the traditional 8/6-pole DSEG, a new 12/9-pole DSEG with symmetric phases is proposed. The four-phase full bridge rectifier, positive half-wave rectifier and four-phase H bridge rectifier are presented. The voltage waveforms, no-load characteristics and loading characteristics with different rectifiers will be given based on the simulation and the experiment on a prototype of DSEG, and the results show that the four-phase H bridge rectifier has the best fault tolerant no-load characteristic and external characteristic, except that it needs more diodes.

Optimization Design of a New Type of Interior Permanent Magnet Generator for Electric Vehicle Range Extender

“…With the perfection of the electric automobile, the power consumption is increasing and the silicon-rectifying generator has been unable to meet the demand of electrical equipment for power consumption. However, the permanent magnet generator is excited by PM, without electric excitation winding, and has the advantages of simple structure, high power density, high reliability, and so on, so it has a broad market prospect in the power supply system of electric vehicles [3,4]. e literature [5] has proposed a novel surface-mounted and interior double radial PM synchronous generator, through the equivalent magnetic circuit (EMC) method.…”