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http://dx.doi.org/10.5762/KAIS.2011.12.6.2722

IP Voltage Controller of Three-phase PWM Converter for Power Supply of Communication System  

Shin, Hee-Keun (Dept. Control and Measurement Engineering, Chungju National University)
Kim, Hag-Wone (Dept. Control and Measurement Engineering, Chungju National University)
Cho, Kwan-Yuhl (Dept. Control and Measurement Engineering, Chungju National University)
Ji, Jun-Keun (Dept. of Electrical Communication Engineering, Soonchunhyang University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.12, no.6, 2011 , pp. 2722-2728 More about this Journal
Abstract
3Phase PWM rectifier has become increasingly popular due to its capability of nearly sinusoidal waveform of the input current, and nearly unity power factor operation as a AC/DC rectifier of high capacity telecommunication power supply system. Generally, PI controller is used as a voltage controller of PWM rectifier and voltage controller must be designed to have low overshoot in transient state to get a reliability and stable operation. However, in the application of telecommunication in which load condition is varied very fast, the voltage controller must have a large bandwidth to reduce output voltage variation. The PI controller with large bandwidth arouse the excessive overshoot of the output voltage, and this large output voltage variation degrades the reliability of communication power of the three-phase PWM Rectifier. In this paper, new IP voltage controller for 3 phase PWM rectifier is proposed which has relatively low transient output voltage variation. The improved output characteristics of the transient state voltage responses of the starting and at load changes of the proposed voltage controller are proved by simulations and experiments.
Keywords
PWM Converter; Voltage Control; IP Controller;
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  • Reference
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