Title :
A digital multimode Boost converter with wide range of input voltage for an energy recycling load system
Author :
Chun Fang Zheng ; Xiang Min Xu ; Bo Zhang ; Dong Yuan Qiu
Author_Institution :
Coll. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China
Abstract :
This paper introduces a digital multi-mode boost converter with wide range of input voltage for an energy recycling load system. The boost converter is controlled digitally with constant off- time/constant frequency hybrid pulse width modulation (PWM) control. Constant off-time control is to avoid the limit cycle oscillation and gain a high gain when the input voltage is far less than the output voltage. Otherwise, constant frequency PWM is adopted. Finally, A 3.6kW DC/DC boost converter with twelve 300W channels in parallel was built for an energy recycling load system and the experimental results testify it to get high gain up to 49 and high efficiency up to about 98%.
Keywords :
DC-DC power convertors; PWM power convertors; digital control; frequency control; limit cycles; load (electric); oscillations; recycling; DC-DC boost converter; constant frequency PWM control; constant off time-constant frequency hybrid pulse width modulation control; digital multimode boost converter; digitally control; energy recycling load system; input voltage wide range; limit cycle oscillation avoid; power 3.6 kW; power 300 W; Frequency control; Frequency conversion; Power supplies; Prototypes; Pulse width modulation; Recycling; Voltage control; Boost converter; PWM; constant off-time control; constant on-time control; digital control;
Conference_Titel :
Electronics and Application Conference and Exposition (PEAC), 2014 International
Conference_Location :
Shanghai
DOI :
10.1109/PEAC.2014.7038087
