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http://dx.doi.org/10.5207/JIEIE.2005.19.7.113

Development of Constant Output Power Supply System for Ozonizer  

Woo, Jung-In (동아대학교 전기공학과)
Woo, Sung-Hoon (동아대학교 전기공학과)
Roh, In-Bae (동아대학교 전기공학과)
Park, Jee-Ho (동아대학교 전기공학과)
Kim, Dong-Wan (동아대학교 전기공학과)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.19, no.7, 2005 , pp. 113-121 More about this Journal
Abstract
In this paper, a constant output power supply system for ozonizer is proposed to remove the noise of ozonizer and control the output of ozonizer using feedback control. The proposed system is based on the rouble control loop such as the outer voltage control loop and inner current control loop. In the proposed system overshoots and oscillations due to the computation time-delay are compensated by explicit incorporation of the time-delay in the current control loop transfer function. The inner current control loop is adopted by an internal model controller. The internal model controller is designed to a second order deadbeat reference-to-output response which means that its response reaches the reference in two sampling time including computational time-delays. The outer voltage control loop employing P-Resonance controller is proposed. The resonance controller has an infinite gain at resonant frequency, and the resonant frequency is set to the fundamental frequency of the reference voltage in this paper. Thus the outer voltage control loop causes no steady state error as regard to both magnitude and phase. The effectiveness of the proposed control system has been verified by the experimental results.
Keywords
Ozonizer; Second order deadbeat response; P-Resonance controller;
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