Title :
The model and an improvement control method of cascaded H-bridge active power filter
Author :
Chen, Yonggang ; Chen, Junling ; Wang, Ping ; Li, Yaohua ; Tan, Longcheng
Author_Institution :
Inst. of Electr. Eng., Chinese Acad. of Sci., Beijing
Abstract :
The model and the normal control method of the cascaded H-bridge active power filter is described firstly in this paper. However, problems exist in the normal control. One of the main problems is the unbalance of dc capacitor voltages of the H-bridge units. In this paper, an improved method for dc capacitor voltages control of the cascaded H-bridge active power filter is presented. With slightly shifting the modulation waves, it makes the dc capacitor voltages balancing in the accepted tolerance without any additional units. The method is validated by simulation.
Keywords :
active filters; power convertors; power filters; power system control; voltage control; H-bridge units; cascaded H-bridge active power filter; dc capacitor voltages balancing; dc capacitor voltages control; dc voltage balance control; improvement control method; modulation waves; normal control method; Active filters; Capacitors; Circuits; Inverters; Power harmonic filters; Power system harmonics; Switches; Switching converters; Total harmonic distortion; Voltage; Active filter; cascaded H-bridge converter; dc voltage balance control;
Conference_Titel :
Industrial Technology, 2008. ICIT 2008. IEEE International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-1705-6
Electronic_ISBN :
978-1-4244-1706-3
DOI :
10.1109/ICIT.2008.4608594
