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http://dx.doi.org/10.5370/KIEE.2013.62.6.767

A Fuzzy-PI Control Scheme of the Three-Phase Z-Source PWM Rectifier without AC-Side Voltage and Current Sensors  

Han, Keun-Woo (Dept. of Electrical Engineering, Chonnam National University)
Jung, Young-Gook (Dept. of Electrical Engineering, Daebul University)
Lim, Young-Cheol (Dept. of Electrical Engineering, Chonnam National University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.62, no.6, 2013 , pp. 767-781 More about this Journal
Abstract
In this paper, we proposes the AC input voltage and current sensorless control scheme to control the input power factor and DC output voltage of the three-phase Z-source PWM rectifier. For DC-link voltage control which is sensitive to the system parameters of the PWM rectifier, fuzzy-PI controller is used. Because the AC input voltage and current are estimated using only the DC-link voltage and current, AC input voltage and current sensors are not required. In addition, the unity input power factor and DC output voltage can be controlled. The phase-angle of the detected AC input voltage and estimated voltage, the response characteristics of the DC output voltage according to the DC voltage references, the FFT results of the estimated voltage and current, efficiency, and the response characteristics of the conventional PI controller and fuzzy-PI controller are verified by PSIM simulation.
Keywords
Z-source PWM rectifier; Modified space vector modulation; AC input voltage/current sensorless control; Modulation index; Unity input power factor; Output DC voltage control; Fuzzy-PI control;
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Times Cited By KSCI : 1  (Citation Analysis)
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