Title :
Integral cycle mode control of the series resonant converter
Author :
Joung, Gyu B. ; Rim, Chun T. ; Cho, Gyu H.
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Chongyang, Seoul, South Korea
fDate :
1/1/1989 12:00:00 AM
Abstract :
A control method for the series resonant converter (SRC) in which the device switching instants are always synchronized to the zero-crossing points of the resonant current is proposed. Output voltage is controlled by proper selection of the switch modes by varying the duty ratio of the powering mode and free resonant mode. Each switch mode is analyzed and the DC transfer function is obtained. It is also shown that the simulation results coincide well with the practical case. The SRC using the proposed control scheme shows many advantages, such as low current-switching stress, low switching loss, low electromagnetic interference, high input power factor, and wide control range. Some of these characteristics are verified experimentally
Keywords :
power convertors; switching circuits; voltage control; DC transfer function; duty ratio; free resonant mode; high input power factor; integral cycle mode control; low current-switching stress; low electromagnetic interference; low switching loss; output voltage control; powering mode; series resonant converter; switch modes; wide control range; Frequency domain analysis; Frequency synchronization; Magnetic resonance; RLC circuits; Resonant frequency; Stress control; Switches; Switching converters; Switching frequency; Voltage control;
Journal_Title :
Power Electronics, IEEE Transactions on
