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Energies 2016, 9(1), 56; doi:10.3390/en9010056

Capacitor Voltage Ripple Suppression for Z-Source Wind Energy Conversion System

College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
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Author to whom correspondence should be addressed.
Academic Editor: João P. S. Catalão
Received: 8 December 2015 / Revised: 12 January 2016 / Accepted: 13 January 2016 / Published: 19 January 2016
(This article belongs to the Special Issue Distributed Renewable Generation)
View Full-Text   |   Download PDF [3043 KB, uploaded 19 January 2016]   |  

Abstract

This paper proposes an improved pulse-width modulation (PWM) strategy to reduce the capacitor voltage ripple in Z-source wind energy conversion system. In order to make sure that Z-source capacitor voltage has symmetrical maximum and minimum amplitudes in each active state, the shoot-through time is divided into six unequal parts. According to the active state and zero state, the shoot-through time is rearranged to match the charging time and discharging time of the Z-source capacitors. Theoretically, it is indicated that the voltage ripple of the Z-source capacitors can be reduced effectively by means of the proposed PWM scheme. Finally, simulation and experimental results are given to verify the performance of the presented method. View Full-Text
Keywords: wind generation system; Z-source inverter; pulse width modulation; capacitor voltage ripple wind generation system; Z-source inverter; pulse width modulation; capacitor voltage ripple
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Huang, S.; Zhang, Y.; Shuai, Z. Capacitor Voltage Ripple Suppression for Z-Source Wind Energy Conversion System. Energies 2016, 9, 56.

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