Title :
A fast voltage balance curve of duty cycle distribution for cascaded rectifier stage based on two dimensional modulation
Author :
Zhang, Guopeng ; Cheng, Hong ; Cheng, Long ; Wang, Cong
Author_Institution :
Sch. of Mech. Electron. Inf. Eng., China Univ. of Min. & Technol. (Beijing), Beijing, China
Abstract :
A novel two dimensional modulation strategy for cascaded rectifier stage in a novel generation power converter without line-frequency transformer is introduced by this paper. A fast voltage balance curve of duty cycle distribution is proposed. Experiment results indicate that this proposed strategy can balance the DC-link voltages of each module for cascaded rectifier stage much better, improve system anti-disturbance ability, as well as realize the unity power factor in rectifier stage.
Keywords :
power convertors; rectifiers; transformers; DC-link voltages; cascaded rectifier stage; duty cycle distribution; fast voltage balance curve; line-frequency transformer; two dimensional modulation; unity power factor; Bridge circuits; Capacitors; Educational institutions; Modulation; Reactive power; Rectifiers; Voltage control; cascaded rectifier; duty cycle distribution curve; line-frequency transformerless; two dimensional modulation; voltage balance;
Conference_Titel :
Power Engineering and Automation Conference (PEAM), 2011 IEEE
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-9691-4
DOI :
10.1109/PEAM.2011.6134798
