Title :
Average control for QRCs makes the output linear with control
Author :
Hu, Chuan-Qiang ; Huang, Shi-Peng
Author_Institution :
Dept. of Electr. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
An average control method for quasi-resonant converters (QRCs) is proposed. This control technique eliminates the need for a voltage-controlled oscillator and makes the output of QRCs linear with control. The transfer function of the closed-loop system can be obtained easily; thus, the design of a desired power supply is greatly simplified. Similar to function control is inherently stable and the perturbation of the line voltage can be completely removed. The analytical results were verified by experiments.<>
Keywords :
power convertors; QRCs; average control method; closed-loop system; line voltage; linear output; power supply; quasi-resonant converters; transfer function; Buck converters; Circuits; Control systems; Pulse width modulation; Pulse width modulation converters; Transfer functions; Transient response; Voltage control; Voltage-controlled oscillators; Zero current switching;
Conference_Titel :
Industry Applications Society Annual Meeting, 1989., Conference Record of the 1989 IEEE
Conference_Location :
San Diego, CA, USA
DOI :
10.1109/IAS.1989.96787
