A ZERO-CURRENT SWITCHING PWM FLYBACK CONVERTER WITH LOW CURRENT STRESS

2008 ◽  
Vol 17 (06) ◽  
pp. 1129-1138 ◽  
Author(s):  
Y. P. BENNY YEUNG ◽  
H. H. C. IU
Keyword(s):  
Computer Simulation ◽  
Electromagnetic Interference ◽  
Output Voltage ◽  
Switching Loss ◽  
Fixed Frequency ◽  
Current Stress ◽  
Flyback Converter ◽  
Current Switching ◽  
Zero Current Switching ◽  
Zero Current

An actively current clamped zero-current switching (ZCS) flyback converter is proposed in this paper. ZCS condition is obtained for all transistors for reducing switching loss and electromagnetic interference. With the current clamping technique, current stress of the converter is low. Output voltage of this converter can be controlled with fixed frequency. Electrical isolation is provided. Operation principles are discussed in the paper. Mathematical descriptions and computer simulation verification are provided.

Interleaved Half-Bridge Flyback Converter With Zero-Current Switching

2019 ◽  
Vol 34 (4) ◽  
pp. 3370-3383
Author(s):  
Tsorng-Juu Liang ◽  
Ming-Hsien Cheng ◽  
Wen-Yu Huang ◽  
Wei-Jing Tseng
Keyword(s):  
Flyback Converter ◽  
Current Switching ◽  
Zero Current Switching ◽  
Zero Current

scholarly journals Zero Current Switching Switched-Capacitors Balancing Circuit for Energy Storage Cell Equalization and Its Associated Hybrid Circuit with Classical Buck-Boost

Energies ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2726 ◽  
Author(s):  
Wang ◽  
Cheng ◽  
Fong
Keyword(s):  
Field Experiments ◽  
Low Energy ◽  
Switching Loss ◽  
Flexible Control ◽  
Current Switching ◽  
Zero Current Switching ◽  
Zero Current ◽  
Wide Range ◽  
Cell Balancing ◽  
Hybrid Circuit

To overcome the problem of switching loss during the balancing process, a novel cell balancing circuit is proposed with the integration of a zero current switching technique. Moreover, the balancing circuit proposed can change between a classical buck-boost pattern and a resonant switched-capacitor pattern with flexible control to cater to the balancing requirements under different driving scenarios. The results of the simulation of field experiments demonstrate successful balancing, various balancing speed, and low energy loss. The proposed balancing circuit proves to be effective for a wide range of application and is the first attempt to integrate a dual balancing function in a single balancing circuit for cells.

scholarly journals A Novel Three-Phase Six-Switch PFC Rectifier with Zero-Voltage-Switching and Zero-Current-Switching Features

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1119 ◽  
Author(s):  
Chun-Wei Lin ◽  
Chang-Yi Peng ◽  
Huang-Jen Chiu
Keyword(s):  
Switching Loss ◽  
Modeling And Analysis ◽  
Zero Voltage Switching ◽  
Current Switching ◽  
Zero Current Switching ◽  
Zero Current ◽  
Three Phase ◽  
The One ◽  
Zero Voltage ◽  
Voltage Switching

A novel three-phase power-factor-correction (PFC) rectifier with zero-voltage-switching (ZVS) in six main switches and zero-current-switching (ZCS) in the auxiliary switch is proposed, analyzed, and experimentally verified. The main feature of the proposed auxiliary circuit is used to reduce the switching loss when the six main switches are turned on and the one auxiliary switch is turned off. In this paper, a detailed operating analysis of the proposed circuit is given. Modeling and analysis are verified by experimental results based on a three-phase 7 kW rectifier. The soft-switched PFC rectifier shows an improvement in efficiency of 2.25% compared to its hard-switched counterpart at 220 V under full load.

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