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.

A ZVS/ZCS SOLUTION TO CROSSOVER DISTORTION IN BOOST PFC RECTIFIER

2005 ◽  
Vol 14 (06) ◽  
pp. 1045-1062
Author(s):  
MUHAMMAD MANSOOR KHAN ◽  
ZHI-MING WU ◽  
JUNMIN PAN
Keyword(s):  
Energy Conservation ◽  
Prototype System ◽  
Zero Voltage Switching ◽  
Current Switching ◽  
The Past ◽  
Zero Current Switching ◽  
Zero Current ◽  
Boost Rectifier ◽  
Zero Voltage ◽  
Voltage Switching

Several ZVS/ZCS (zero voltage switching/zero current switching) snubbers have been proposed in the past to minimize the losses and EMI in boost PFC. In these topologies, the commutation energies are reflected to the load or source to achieve energy conservation. However, this energy can also be utilized in a way to further improve the performance of the PFC and this paper is a first step in this direction. Here, we will propose a new topology to minimize the crossover distortion in boost rectifier. The main characteristic of the proposed topology besides ZCS/ZVS switching is that it also improves the crossover distortion. A prototype system was built and tested to verify the proposed topology.

scholarly journals A family of improved ZVT PWM converters using an auxiliary resonant source

2003 ◽  
Vol 14 (4) ◽  
pp. 412-421 ◽  
Author(s):  
M. L. Martins ◽  
H. Pinheiro ◽  
J. R. Pinheiro ◽  
H. A. Gründling ◽  
H. L. Hey
Keyword(s):  
Resonant Circuit ◽  
Zero Voltage Switching ◽  
Full Load ◽  
Pwm Converters ◽  
Current Switching ◽  
Zero Current Switching ◽  
Zero Current ◽  
Zero Voltage ◽  
Additional Current ◽  
Voltage Switching

This paper presents a novel family of Zero Voltage Transition (ZVT) DC-DC PWM Converters that uses a resonant circuit as auxiliary commutation source to control the current through the auxiliary switch without additional current stresses on main devices. The improved ZVT commutation cell enables the main switch to be turned on and off at Zero Voltage Switching (ZVS) and the auxiliary switch to be turned on and off at Zero Current Switching (ZCS) from zero to full-load.

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