H桥级联型多电平高压调速系统低速畸变补偿控制技术

doi:10.19595/j.cnki.1000-6753.tces.160257

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Abstract Under low speed condition, the output voltage distortion of the cascade multilevel converter by low index modulation and dead-time is existed. In the paper, a novel vector control is presented to compensate the current distortion. A vector control scheme was put forward for asynchronous machine driven by a cascaded multi-level inverter to compensate dead-time effect of inverter and provide sinusoidal currents. The distortion causes and distortion component extraction method were analyzed in detail. Meanwhile, based on the least squares method, a PID time-delay compensator for enhancing the system response property is devised. Finally, the experimental test platform for the prototype is designed. The simulation results and experimental data show the effectiveness of the proposed algorithm.

Key words： Cascade multi-level, vector control, distortion compensation

Received: 07 March 2016 Published: 05 December 2017

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TM46

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	Articles by authors
	Zhang Liang
	Chen Guodong
	Zhu Jihong
	Yuan Yubo
	Shui Henghua

Cite this article:

Zhang Liang,Chen Guodong,Zhu Jihong等. Distortion Compensation Control Designed for H-Bridge Cascade Multi-Level Converter under Low Speed Condition[J]. Transactions of China Electrotechnical Society, 2017, 32(22): 13-21.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.160257 OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I22/13

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