高速磁悬浮牵引系统大功率三电平整流器特定谐波消除脉宽调制策略

doi:10.19595/j.cnki.1000-6753.tces.211881

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Abstract The traction power supply system of high-speed maglev train adopts high power back-to-back three-level active neutral point clamped (3L-ANPC) converter. In order to reduce the harmonics of grid-side current at low switching frequency, a selective harmonic elimination pulse width modulation (SHEPWM) strategy suitable for high power 3L-rectifiers was proposed based on linear extended state observer (LESO) and proportional resonance (PR) control in the three-phase static coordinate system. The corresponding dead time compensation method was also designed. During the operation of high-speed maglev train, the load on the inverter side would change sharply due to the changeover of the stator segment, resulting in a significant change in the grid-side current. Considering the poor dynamic performance of SHEPWM, an on-line correction method for the off-line calculated switching angle sequence in the changeover stage was proposed, which could improve the dynamic regulation ability of the rectifier closed-loop control based on SHEPWM. Finally, the back-to-back 3L-ANPC experimental platform was utilized to verify the superiority of SHEPWM in improving the grid-side current quality and the effectiveness of the proposed strategy to improve the dynamic performance of SHEPWM closed-loop control.

Key words： High-speed maglev train three-level active neutral point clamped (3L-ANPC) rectifier selective harmonic elimination pulse width modulation (SHEPWM) linear extended state observer (LESO) dynamic performance

Received: 18 November 2021

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TM461

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	Articles by authors
	Zhao Mutian
	Ge Qiongxuan
	Zhang Bo
	Fan Enze
	Zhu Jinquan

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Zhao Mutian,Ge Qiongxuan,Zhang Bo等. Selective Harmonic Elimination Pulse Width Modulation for High Power Three-Level Rectifier of High-Speed Maglev Traction System[J]. Transactions of China Electrotechnical Society, 2022, 37(16): 4180-4192.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.211881 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I16/4180

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