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http://dx.doi.org/10.11142/jicems.2013.2.1.1

Comparison of Three Magnet Array-type Rotors in Surface Permanent Magnet-type Vernier Motor  

Kataoka, Yasuhiro (Dept. of Electronics and Information Systems, Akita Prefectural University)
Takayama, Masakazu (Dept. of Electronics and Information Systems, Akita Prefectural University)
Matsushima, Yoshitarou (Dept. of Electrical and Electronic Engineering, Shizuoka University)
Anazawa, Yoshihisa (Dept. of Electronics and Information Systems, Akita Prefectural University)
Publication Information
Journal of international Conference on Electrical Machines and Systems / v.2, no.1, 2013 , pp. 1-8 More about this Journal
Abstract
Surface permanent magnet-type vernier motors with three magnet array-type rotors (parallel magnetized type, repulsion type, and Halbach type) are compared based on the pull-out torque. It was clarified that increasing the rotor radius increases the pull-out torque at a fixed three-phase alternating voltage. The mechanism for the pull-out torque increase on each magnet array type was different, when the effects of the increase were analyzed based on an induced electromotive force and a synchronous reactance. As a result, the design of the Halbach-type rotor was found to be especially effective for achieving high pull-out torque, because this array type achieves a large induced electromotive force $E_0$ and a small synchronous reactance $x_s$.
Keywords
Halbach array; Repulsion array; Pull-out torque; Vernier motor;
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  • Reference
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