Eliminating the Third Harmonic Effect for Six Phase Permanent Magnet Synchronous Generators in One Phase Open Mode

Jian Liu; Gui-jie Yang; Yong Li; Hong-wei Gao; Jian-yong Su

Eliminating the Third Harmonic Effect for Six Phase Permanent Magnet Synchronous Generators in One Phase Open Mode

Vol. 14, No. 1, pp. 92-104, Jan. 2014

10.6113/JPE.2014.14.1.92

Current magnitude minimum

Fault tolerant operation

Six phase permanent magnet synchronous generator

Stator cooper loss minimum

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Abstract

To insure stable operation and eliminate twice torque ripple, a topology for a six phase permanent magnet synchronous generator (SP-PMSG) with a neutral point connected together was analyzed in this paper. By adopting an extended transformation matrix, the mathematic model of the space vector control was established. The voltage and torque equations were deduced while considering the third harmonic flux and inductance. In addition, the suppression third harmonic method and the closed loop control strategy were proposed. A comparison analysis indicates that the cooper loss minimum method and the current magnitude minimum method can meet different application requirements. The voltage compensation amount for each of the methods was deduced which also takes into account the third harmonic effect. A simulation and experimental result comparison validates the consistency through theoretical derivation. It can be seen that all of the two control strategies can meet the requirements of post-fault.

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Cite this article

[IEEE Style]

J. Liu, G. Yang, Y. Li, H. Gao, J. Su, "Eliminating the Third Harmonic Effect for Six Phase Permanent Magnet Synchronous Generators in One Phase Open Mode," Journal of Power Electronics, vol. 14, no. 1, pp. 92-104, 2014. DOI: 10.6113/JPE.2014.14.1.92.

[ACM Style]

Jian Liu, Gui-jie Yang, Yong Li, Hong-wei Gao, and Jian-yong Su. 2014. Eliminating the Third Harmonic Effect for Six Phase Permanent Magnet Synchronous Generators in One Phase Open Mode. Journal of Power Electronics, 14, 1, (2014), 92-104. DOI: 10.6113/JPE.2014.14.1.92.