Simple-Structure Active Lossless Decoupling Rectifier With Automatic PFC

One of the main challenges is how to prolong the lifetime of converters, and as in most single-phase converters the need for electrolytic capacitors. A simple structure rectifier is proposed with lossless buffer and power factor correction (PFC) abilities. It has the advantages of low cost, fewer au...

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Bibliographic Details
Published in:IEEE journal of emerging and selected topics in power electronics 2023-06, Vol.11 (3), p.1-1
Main Authors: Tian, Hanlei, Liang, Guozhuang, Liu, He, Tang, Zixin, Li, Qiao, Han, Wei
Format: Article
Language:English
Subjects:
Active power decoupling
Buffers
Capacitors
Circuits
Control methods
Decoupling
Electrolytic capacitors
Inductors
Power factor
power factor correction(PFC)
Prototypes
Reactive power
Rectifiers
single-phase rectifier
soft switching
Switches
Voltage
Zero voltage switching
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Summary:One of the main challenges is how to prolong the lifetime of converters, and as in most single-phase converters the need for electrolytic capacitors. A simple structure rectifier is proposed with lossless buffer and power factor correction (PFC) abilities. It has the advantages of low cost, fewer auxiliary components, and high conversion efficiency. The active buffer circuit as an auxiliary unit consists of just one capacitor and one switch. It not only makes it possible for the rectifier to operate without electrolytic capacitors but also provides zero voltage switching (ZVS) for the buffer tank. Additionally, a simple control scheme is presented, in which near perfect power factor is obtained. Finally, the operating principles, control methods, and design guidelines are presented in detail, and the feasibility of the proposed converter is verified through a 58-W (48-V/1.2-A) hardware prototype. All the superior performances of the proposed rectifier are verified by the experimental prototype.
ISSN:2168-6777
2168-6785
DOI:10.1109/JESTPE.2023.3238102