Composite control method for three-phase four-leg inverter

doi:10.3969/j.issn.1000-1565.2018.01.016

Journal of Hebei University (Natural Science Edition) ›› 2018, Vol. 38 ›› Issue (1): 105-112.DOI: 10.3969/j.issn.1000-1565.2018.01.016

Composite control method for three-phase four-leg inverter

YAN Feng¹,HUANG Lihua¹,WANG Hui²,TANTAI Xiaohan³,HAN Jiao³,YU Wei⁴

1.College of Mechanical and Electrical Engineering, Agricultural University of Hebei, Baoding071000, China; 2.Tiandaqiushi Power New Technology Corporation of Tianjin, Tianjin 300384, China; 3.Business and Electricity Department, State Grid Company of Heibei Baoding, Baoding 071000, China; 4.Nanrui Electric Research Huayuan Electric Power Technology Company ofBeijing, Beijing 102200, China

Received:2017-03-15 Online:2018-01-25 Published:2018-01-25

Abstract

Abstract: In the application of wind, solar and other clean energy in the grid,inverter is indispensable.Harmonic wave and unbalanced load affect the output of the inverter, the performance of the inverter control strategy directly affects the power quality.By combining proportional integral(PI), vector resonance(VR)control and repetitive control(RC),the compound control method is proposed.PI restrain the interference of DC component, the VR controller suppresses the low harmonics.RC suppresses the higher harmonics and reduce the static error, and improve the waveform qualities of converter output voltage and current.The simulation results verify the effectiveness of the proposed control method.

Key words: converter, vector-resonant(VR), repetitive control(RC), harmonic wave

CLC Number:

TM464

YAN Feng,HUANG Lihua,WANG Hui,TANTAI Xiaohan,HAN Jiao,YU Wei. Composite control method for three-phase four-leg inverter[J]. Journal of Hebei University (Natural Science Edition), 2018, 38(1): 105-112.

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Composite control method for three-phase four-leg inverter

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