Harmonic Suppression for the Motor-Side Converter of the Z-Source Grid-Connected Wind Generation System

doi:10.11985/2018.03.003

Abstract

Abstract:

D-PMSG based on Z-source inverter uses a three-phase diode rectifier. Stator side current harmonics will not only increase the motor's copper and iron losses, but also produce motor saturation and runaway phenomenon. What has seriously affected the stability of the system and reduced power generation efficiency. This paper presents a wind turbine generation system based on the Z-source inverter, which takes in the VIENNA rectifier. A period of stator voltage is divided into six sectors in this paper and equivalent circuit is researched in different working stages. A Z-source inverter control strategy is proposed according to the determination of Z-source inductor value. The simulation and experimental results prove the theoretical analysis very well.

Key words: Z-source inverter, VIENNA rectifier, wind power generation, harmonic suppression

CLC Number:

TM614

Zhun Cheng,Yang Zhang,Musheng Deng. Harmonic Suppression for the Motor-Side Converter of the Z-Source Grid-Connected Wind Generation System[J]. Journal of Electrical Engineering, 2018, 13(3): 17-26.

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参数	数值
定子绕组相电阻/Ω	2.3
极对数	2
额定转速/(r/min)	1 500
相电压幅值对应的磁通/Wb	0.804
系统功率/kW	7.5
网侧线电压/V	380
电网频率/Hz	50
Z源网络电容电压/V	570
Z源网络电容/mF	2.04
Z源网络电感/mH	5