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�������պ����ѧѧ�� 2010, Vol. 36 Issue (3) :357-362    DOI:
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Control strategy for single-phase Z-source inverter
Zhang Jin1, Qi Bojin1, Zhang Shaoru2*
1. School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. College of Physics and Information Engineering, Hebei Normal University, Shijiazhuang 050016, China

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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;


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