Dual Third-Harmonic-Current Excitation Principle Of A Brushless Synchronous Machine Based On Double Three-Phase Armature Windings
2019 22ND INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS 2019)(2019)
摘要
Traditional harmonic excitation synchronous machine can only be used for generator. One of the main reasons why the harmonic excitation synchronous machine can not be used as a motor is that the field current of the harmonic excitation synchronous machine can not be generated when the rotor is at a stationary state. A double three-phase brushless synchronous machine employing double third-harmonic-current excitation method is proposed in this paper. A rotating harmonic magnetic field can be generated in the air-gap by the double three-phase orthogonal harmonic currents. Therefore, the brushless excitation can still be realized when the rotor is stationary or at a low speed. The stator harmonic magnetic fields are theoretically analyzed. The FEA results verify the correctness of the theoretical analyses.
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关键词
Brushless harmonic excitation, double three-phase windings, rotating harmonic field, synchronous machine
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