Title :
A high frequency two-switch forward converter with optimized performance
Author :
Salazar, Lautaro D. ; Ziogas, Phoivos D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
The analysis and design of a high-frequency two-switch forward converter topology with transformer flux balancing and extended duty cycle capability are presented. To improve converter performance, an auxiliary circuit connected in parallel with each power switch is proposed. This auxiliary circuit uses a low power switch or a nonlinear resistor connected in series with a capacitor. As a result, the DC component of the magnetizing current is minimized and the converter provides the means of recovery the energy associated with the parasitic inductances of the circuit components. Thus, higher than usual efficiency and higher operating frequencies are obtained. Experimental results are presented for a 4 kW, 40 kHz prototype unit
Keywords :
power convertors; 4 kW; 40 kHz; extended duty cycle capability; high frequency two-switch forward converter; nonlinear resistor; optimized performance; parasitic inductances; transformer flux balancing; Circuit topology; Frequency conversion; Hafnium; Magnetic flux; Pulse width modulation converters; Pulse width modulation inverters; Resonant inverters; Switches; Switching converters; Voltage;
Conference_Titel :
Industrial Electronics Society, 1989. IECON '89., 15th Annual Conference of IEEE
Conference_Location :
Philadelphia, PA
DOI :
10.1109/IECON.1989.69612
