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Abstract�� The control strategy for single-phase Z-source inverter, which consisted of Z-source network voltage feedback, ac-side instantaneous feedback and voltage ripple feed-forward loop, was presented. Due to the non-minimum-phase effect of Z-source network, an ac-side instantaneous controller was incorporated based on the Z-source network voltage feedback loop to guarantee fast dynamic response. The Z-source network has voltage ripple during operating with the heavy load, which decreases the performance of the output voltage. The proposed voltage ripple feed-forward controller could modify the modulation index, thus the effects were prevented from propagating into the ac-side and hence the quality of the output ac voltage waveform was improved. Both computer simulation and experimental results verify the effectiveness of the proposed strategy.

Keywords�� Z-source inverter instantaneous control feed-forward control sinusoidal pulse width modulation

Received 2009-03-23;

Fund:

��863�ƻ��Ŀ(2006AA11A145)

About author: �� (1980-),��,��,��ʿ��,zhangjin_ntu@hotmail.com.

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�� , �벬��, ��.��ZԴ��Ʋ��[J] ��պ��ѧѧ��, 2010,V36(3): 357-362

Zhang Jin, Qi Bojin, Zhang Shaoru.Control strategy for single-phase Z-source inverter[J] JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2010,V36(3): 357-362

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http://bhxb.buaa.edu.cn//CN/ �� http://bhxb.buaa.edu.cn//CN/Y2010/V36/I3/357

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