Abstract
The Electrically Excited Doubly Salient Variable Reluctance Machine (EEDSVRM) is a new type of brushless machine designed according to the principle of air gap reluctance change. There is neither permanent magnet steel nor excitation winding on the rotor. The rotor is made of silicon steel sheets, thus the structure of the variable reluctance machine is very simple. There are many optimization methods for this type of machine optimal design, such as novel machine topology optimization, finite element simulation-based optimization, mathematical analysis-based optimization, intelligent algorithm-based optimization, and multiple fusion-based optimization. Firstly, this article introduces the basic structure and working principle of the EEDSVRM and analyzes both its common regularity and individual difference. Then, the different optimization design methods of EEDSVRM are reviewed, the advantages and disadvantages of the different optimization methods are summarized, and the research interests of the optimization design of variable reluctance machines in the future are prospected.
Highlights
Traditional machine excitation sources are concentrated on the rotor, such as the permanent magnet synchronous machine (PMSM), which has a higher power density and efficiency, has attracted much attention, and has been widely used [1]
Compared with traditional rotor-excited machines such as PMSM, the Excited Doubly Salient Variable Reluctance Machine (EEDSVRM) represented by Wound-field Doubly Salient Machine (WFDSM), SRM, and Electrical Excitation Flux-switching Machine (EEFSM) reviewed in this article have no windings wound on the rotor and all windings are concentrated on the wound on the stator, the three types of machines are simple in structure and easy to manufacture
Power supply to excite the machines. This unique excitation method enables WFDSM, SRM, and EEFSM to avoid the irreversible demagnetization phenomenon that may be caused by the use of permanent magnets and cause the machine to fail to work normally, which greatly improves the robustness of the machine
Summary
Traditional machine excitation sources are concentrated on the rotor, such as the permanent magnet synchronous machine (PMSM), which has a higher power density and efficiency, has attracted much attention, and has been widely used [1]. RB magnetic field passes through the yoke and magnetic poles of flux generated eBf Wby the main the stator and rotor and penetrates the entire magnetic circuit of the machine. Dissimilarity and Commonness of the Three Kinds of Variable Reluctance Machines
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