Title :
A multiphase pulse charging scheme to improve the performance of its front end power supply
Author :
Wang, J.B. ; Chuang, C.Y.
Author_Institution :
Dept. of Electr. Eng., Ching Yun Univ. of Technol., Jung-Li
Abstract :
In this paper, a multiphase battery charger to improve the current utilization of the power supply unit (PSU) and the over voltage problem during negative discharging period is presented. According to output voltage specification of the PSU, maximum output power limitation, duty ratio and current ripples of the output inductor, the desired output voltage and maximum amplitude of the pulse charging current command can be determined for the small capacity sealed lead acid battery. The design procedures of the multiphase battery charger are detailed in this paper. Finally, three 7AH lead acid batteries were used to demonstrate the proposed multiphase pulse charging scheme. From simulation and experimental results show the over voltage problem of the PSU during negative discharging period that can be improved significantly
Keywords :
battery chargers; lead acid batteries; overvoltage; power supplies to apparatus; 7AH lead acid batteries; current ripples; current utilization; duty ratio; front end power supply; maximum output power limitation; multiphase battery charger; multiphase pulse charging scheme; negative discharging period; output inductor; output voltage specification; power supply unit; small capacity sealed lead acid battery; Batteries; Circuits; Galvanizing; Inductors; Power generation; Pulse measurements; Pulsed power supplies; Resistors; Safety; Voltage control; charger; pulse charging;
Conference_Titel :
Industrial Technology, 2005. ICIT 2005. IEEE International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
0-7803-9484-4
DOI :
10.1109/ICIT.2005.1600751
