Title :
Multi-Objective Current Quality Compensator with Cascade H-Bridges
Author :
Yukun Liu ; Chunlin Guo ; Xiangning Xiao ; Li Wu
Author_Institution :
Key Lab. of Power Syst. Protection & Dynamic Monitoring & Control under Minist. of Educ. Univ., North China Electr. Power Univ., Beijing, China
Abstract :
A novel main circuit topology of current quality compensator is proposed in this paper, which is composed of PWM rectifier and cascade H bridge inverter. The three phase inverters are decoupling controlled. PWM rectifier is adopted to maintain the dc-bus voltage stably for the device, the later inverter is composed of cascade H-bridges. The inverter side is controlled by carrier phase shifting and adaptive fuzzy PI control is adopted as a output current control method which is able to enhance the ability of the control system to withstand the parameter variations and nonlinear uncertain disturbances. The simulation model is set up on the platform of RTDS, the problems of disturbance current such as harmonic current, reactive current and imbalance current are made as the multi-objective of current compensator. Finally, the simulation and experimental results show that the proposed main circuit topology and control strategy is feasible and efficient.
Keywords :
PI control; PWM rectifiers; adaptive control; electric current control; invertors; network topology; PWM rectifier; adaptive fuzzy PI control; carrier phase shifting; cascade H bridge inverter; circuit topology; control strategy; current quality compensator; harmonic current; multiobjective current quality compensator; nonlinear uncertain disturbances; output current control method; reactive current; Harmonic analysis; Inverters; Pi control; Power harmonic filters; Reactive power; Rectifiers;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2011 Asia-Pacific
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6253-7
DOI :
10.1109/APPEEC.2011.5747729