A ZVS approach for AC/DC converter with PFC

Poon, N.K.; Liu, C.P.; Pong, M.H.

doi:10.1109/apec.2003.1179288

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…Among several topologies, the boost rectifier is the most popular for its compatibility with a universal input voltage range. The transition-mode (TM) technique is now a well-known control scheme for a boost PFC with reduced switching losses and improved conversion efficiency [1][2][3]. However, large conduction losses of a TM PFC at heavy loads lead to a decreased converter efficiency.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of a Dual-Mode Control Boost Rectifier

Lin

Wang

2012

AMR

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This paper presents a dual-mode control scheme for a boost rectifier at both extreme loads. The transition-mode (TM) technique is adopted to reduce the switching loss at light loads. On the other hand, the fixed-off-time (FOT) control with continuous conduction mode (CCM) operation decreases the conduction losses at heavy loads. The principles and design procedures of the proposed dual-mode controller are discussed and analyzed. Finally, a 300-W dual-mode boost rectifier with an output voltage of 380 V is implemented with satisfactory experimental results.

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Section: Introductionmentioning

confidence: 99%

Analysis and Design of a Dual-Mode Control Boost Rectifier

Lin

Wang

2012

AMR

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High-frequency isolated ac-dc converter with stacked architecture

Lim

Bandyopadhyay

Perreault

2017

2017 IEEE Applied Power Electronics Conference and Exposition (APEC)

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Abstract-This paper presents a new isolated ac-dc power converter achieving both high power factor and converter miniaturization suitable for many low power ac-dc applications. The proposed ac-dc converter architecture comprises a line-frequency rectifier, a stack of capacitors, a set of regulating converters, and a multi-input isolated bus converter. Among many suitable circuit implementations, the prototype system utilizes the resonanttransition buck converter as a regulating converter, and the capacitively-aided isolated bus converter for the isolated bus converter. The converter is miniaturized by operating at high frequency (1 -10 MHz range), and it buffers the ac-line frequency energy with a pair of stacked ceramic capacitors (1 µF and 150 µF, 100 V rating) without a requirement for electrolytic capacitors. The prototype converter is implemented to operate from 120 Vac to 12 V, and up to 50 W output as an example isolated ac-dc converter for power supply applications. The prototype converter demonstrates with 88 % efficiency and 0.86 power factor, and provides 50 W/in 3 power density, which is five times higher than the power density of typical conventional designs.

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A ZVS approach for AC/DC converter with PFC

Cited by 2 publications

References 15 publications

Analysis and Design of a Dual-Mode Control Boost Rectifier

Analysis and Design of a Dual-Mode Control Boost Rectifier

High-frequency isolated ac-dc converter with stacked architecture

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