Title :
Restraining DC Magnetic Bias in PS-PWM Full Bridge Inverter of Plasma Power
Author :
Xiaomei, Jiang ; Yannian, Rui ; Guoqiang, Chen ; Kaiqiang, Liu
Author_Institution :
Dept. of Mech. Eng., Changshu Inst. of Technol., Changshu, China
Abstract :
In this paper, phase-shift controlled full-bridge series resonant high frequency & voltage power is used for discharge plasma. For DC magnetic bias generated in the output transformer, a technique is presented for compound control restraining magnetic bias which is based on the DC midpoint and the transformer primary side deviation voltage and the transformer primary side direct current component. The working mechanism is described and useful circuit topology provided. The practical application results show that the magnetic bias has been better restrained under variable working conditions.
Keywords :
PWM invertors; discharges (electric); high-frequency transformers; magnetic circuits; magnetic variables control; phase control; plasma devices; resonant invertors; DC magnetic bias; PS-PWM full bridge inverter; circuit topology; compound control restraining magnetic bias; high frequency transformer; magnetic bias circuit; phase-shift controlled full-bridge series resonant invertor; plasma power discharge; transformer primary side deviation voltage; transformer primary side direct current component; Circuit faults; Inverters; Magnetic circuits; Magnetic flux; Magnetic resonance; Saturation magnetization; Voltage control; DC magnetic bias; PS-PWM; inverter; restraining; transformer;
Conference_Titel :
Intelligent System Design and Engineering Application (ISDEA), 2010 International Conference on
Conference_Location :
Changsha
Print_ISBN :
978-1-4244-8333-4
DOI :
10.1109/ISDEA.2010.184
