Title :
Research on Frequency Tracking Capacitive PWM of Induction Heating Power Supply
Author :
Xiao, Qinghua ; Zhao, Jie ; Wang, Mingfa
Author_Institution :
Dept. of Electr. & Autom. Eng., Nanchang Univ., Nanchang, China
Abstract :
The principle of capacitive PWM control circuit was analyzed in this paper, the soft-switching solution was applied in the switching devices, and the practical main circuit topology was given. On the load current to achieve a frequency tracking, To make the power factor of the inverter close to or equal to a quasi-resonant state, the Frequency of the load current was tracked. The phase compensation and start-up of the circuit were analyzed also. The application of the capacitive PWM control in the induction heating power supply composed with series IGBT inverter was correctly verified by the test.
Keywords :
Circuit analysis; Circuit topology; Frequency; Power supplies; Pulse width modulation; Pulse width modulation inverters; Reactive power; Resonant inverters; Switching circuits; Temperature control; induction heating power supply; load frequency tracking; series inverte; soft-switching;
Conference_Titel :
Challenges in Environmental Science and Computer Engineering (CESCE), 2010 International Conference on
Conference_Location :
Wuhan, China
Print_ISBN :
978-0-7695-3972-0
Electronic_ISBN :
978-1-4244-5924-7
DOI :
10.1109/CESCE.2010.210
