Title :
Design of Double Closed Loop in Boost Aerospace DC-DC Power Supply
Author :
Liu, Xiang ; Yang, Xijun ; Jiang, Jianguo ; Cai, Xu
Author_Institution :
Dept. of Electr. Eng., Shanghai Jiao Tong Univ.
Abstract :
A boost dc-dc space power supply is implemented using single-phase active PFC dedicated control chip L4981B, and the converter utilizes the traditional PFC control principle and reserves the advantages of L4981B. It includes power stage and control stage, and the latter consists of the peripheral circuit of L4981B, output voltage closed loop and input current closed loop. In the paper, the main task is to modify and optimize the design of double closed loop to meet the special requirements of space environment and other several different loads. Consequently, a prototype is realized with continuous current mode, high output voltage stability, good load regulation factor and excellent EMI characteristics. It also features that the switching frequency is 50 kHz, the input voltage range is 50 VDC to 90 VDC the rated output DC voltage is 128 VDC with a low ripple and the output power capability is 1.5 kW
Keywords :
DC-DC power convertors; aerospace engineering; closed loop systems; digital control; network synthesis; switching convertors; 1.5 kW; 128 V; 50 to 90 V; boost aerospace dc-dc power supply; continuous current mode; dedicated control chip L4981B; double closed loop design; input current closed loop; output voltage closed loop; regulation factor; single-phase active PFC; switching frequency; voltage stability; Circuits; DC-DC power converters; Design optimization; Electromagnetic interference; Power generation; Power supplies; Prototypes; Stability; Switching frequency; Voltage control; boost DC-DC converter; double closed loop; space power supply;
Conference_Titel :
Power Electronics and Drives Systems, 2005. PEDS 2005. International Conference on
Conference_Location :
Kuala Lumpur
Print_ISBN :
0-7803-9296-5
DOI :
10.1109/PEDS.2005.1619935
