Title :
Elimination of magnetic saturation due to fast dynamic response in DC-DC converter
Author :
Kohama, Teruhiko ; Tokimatsu, Sunao ; Shimamori, Hiroshi
Author_Institution :
Dept. of Electr. Eng., Fukuoka Univ., Fukuoka, Japan
Abstract :
Method for eliminating magnetic saturation in low-voltage and high-current DC-DC converter with fast dynamic response is described. Core saturation presented here is observed in onboard isolated DC-DC converter due to inherently asymmetrical PWM signal during transient condition. The saturation is not eliminated by using ac-coupling capacitor for transformer. Mechanism of the saturation is analyzed and confirmed by experiments. Method for eliminating magnetic saturation is also presented. Effectiveness of proposed method is confirmed by experiments.
Keywords :
DC-DC power convertors; fast dynamic response; magnetic saturation elimination; onboard isolated DC-DC converter; Capacitors; Circuit faults; DC-DC power converters; Magnetic circuits; Magnetic cores; Power supplies; Pulse width modulation; Pulse width modulation converters; Saturation magnetization; Transformer cores;
Conference_Titel :
Telecommunications Energy Conference, 2009. INTELEC 2009. 31st International
Conference_Location :
Incheon
Print_ISBN :
978-1-4244-2490-0
Electronic_ISBN :
978-1-4244-2491-7
DOI :
10.1109/INTLEC.2009.5351916
