Abstract
In this paper, a new hybrid excited doubly salient stator-permanent-magnet motor is proposed, where both permanent magnets and DC field windings are located in the stator. In theory, the mathematical model and design method of the motor are developed. The corresponding output power equation and the relationship between the flux control capability and the extended speed range are deduced in details. By using an efficient “one-step” three-dimensional (3D) finite element method, the electromagnetic performances are analyzed, in which the leakage flux outside the stator circumference and end-effect are taken into account. Based on the operation principle of the motor, the control strategy and scheme are developed and implemented experimentally. Both experimental results and finite element analysis show that the proposed motor not only maintains the advantages of doubly salient permanent magnet motors, but also offers high energy efficiency over a wide speed range, which makes the motor an interesting candidate for electric vehicles.
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This work was supported by the National Natural Science Foundation of China (Grant Nos. 50807022, 50337030, 50729702) and the Foundation of Jiangsu University (Grant No. 09JDG031).
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Zhu, X., Cheng, M. Design, analysis and control of hybrid excited doubly salient stator-permanent-magnet motor. Sci. China Ser. E-Technol. Sci. 53, 188–199 (2010). https://doi.org/10.1007/s11431-009-0357-0
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DOI: https://doi.org/10.1007/s11431-009-0357-0