A Family of Single-Switch PWM Converters With High Step-Up Conversion Ratio

A new family of a single-switch three-diode dc-dc pulsewidth-modulated (PWM) converters operating at constant frequency and constant duty cycle is presented in this paper. The proposed converters are different from the conventional dc-dc step-up converters, and they posses higher voltage gain with s...

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Veröffentlicht in:IEEE transactions on circuits and systems. I, Regular papers Jg. 55; H. 4; S. 1159 - 1171
Hauptverfasser: Ismail, E.H., Al-Saffar, M.A., Sabzali, A.J., Fardoun, A.A.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York IEEE 01.05.2008
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Conversion ratio
Converters
DC-DC power conversion
DC-DC power converters
Diodes
Electric potential
Frequency conversion
Performance analysis
Pulse duration modulation
Pulse width modulation
Pulse width modulation converters
pulsewidth-modulated (PWM)
Ripples
Schottky diodes
Semiconductor devices
Semiconductor diodes
step-up converter
Stress control
Stresses
switched-mode power supplies
Voltage
Voltage control
step-up converter
DC-DC power conversion
pulse width-modulated (PWM)
switched mode power supplies
ISSN:1549-8328, 1558-0806
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Beschreibung
Zusammenfassung:A new family of a single-switch three-diode dc-dc pulsewidth-modulated (PWM) converters operating at constant frequency and constant duty cycle is presented in this paper. The proposed converters are different from the conventional dc-dc step-up converters, and they posses higher voltage gain with small output voltage ripples. Other advantages of the proposed converters include lower voltage stress on the semiconductor devices, simple structure, and control. Moreover, the reduced voltage stress on the diodes allows using Schottky diodes for alleviating the reverse-recovery current problem, as well as decreasing the switching and conduction losses. The principle of operation, theoretical analysis, and experimental results of one prototype rated 40W and operating at 94kHz are provided in this paper to verify the performance of this new family of converters.
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ISSN:1549-8328
1558-0806
DOI:10.1109/TCSI.2008.916427