Transactions of China Electrotechnical Society  2018, Vol. 33 Issue (24): 5649-5658    DOI: 10.19595/j.cnki.1000-6753.tces.181142
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Electrolytic Capacitor-less Motor Drive System Based on Predictive Control
Zhang Chao, Hu Xin, Zhu Xiaoyong, Xu Lei, Du Yi
School of Electrical and Information Engineering Jiangsu University Zhenjiang 212013 China

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Abstract  

This paper presents a novel electrolytic capacitor-less (ECL) power decoupling circuit and control strategy. According to the relationship between the pulsating power of the power grid and the motor power, the circuit realizes power decoupling between the grid and the motor, which effectively suppresses the DC bus voltage fluctuation. Based on the characteristics of this circuit, a predictive control algorithm is proposed to improve the input power factor of the ECL drive system and simplify the controller design. The reason of motor torque ripple is derived and analyzed. An active damping algorithm is proposed to suppress the motor torque ripple, which improves the stability of the system. The permanent magnet synchronous motor (PMSM) drive system is constructed based on this novel circuit. The simulation and experiment show the effectiveness and superiority of theoretical analysis.

Key wordsElectrolytic capacitor-less      permanent magnet synchronous motor      predictive control      DC-link voltage ripple      torque ripple reduction     
Received: 01 July 2018      Published: 29 December 2018
PACS: TM351  
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Zhang Chao
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Cite this article:   
Zhang Chao,Hu Xin,Zhu Xiaoyong等. Electrolytic Capacitor-less Motor Drive System Based on Predictive Control[J]. Transactions of China Electrotechnical Society, 2018, 33(24): 5649-5658.
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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.181142     OR     https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I24/5649
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