scholarly journals A simplified zero‐voltage switching detection circuit and switching loss dynamic optimisation method for synchronous buck converter

2020 ◽  
Author(s):  
Sizhao Lu ◽  
Xiaoting Deng ◽  
Siqi Li
Keyword(s):  
Buck Converter ◽  
Switching Loss ◽  
Dynamic Optimisation ◽  
Zero Voltage Switching ◽  
Detection Circuit ◽  
Zero Voltage ◽  
Voltage Switching

Analysis and Implementation of a Zero-Voltage-Switching Zeta Converter

2012 ◽  
Vol 424-425 ◽  
pp. 1199-1202
Author(s):  
Hyun Lark Do
Keyword(s):  
Switching Loss ◽  
Zero Voltage Switching ◽  
Experimental Prototype ◽  
Active Switch ◽  
And Performance ◽  
Output Filter ◽  
Zero Voltage ◽  
Voltage Switching

A zero-voltage-switching (ZVS) Zeta converter is proposed in this paper. Two separate inductors in the conventional Zeta converter are magnetically coupled in the proposed converter. The output diode is replaced with an active switch. Also, an auxiliary inductor is utilized. The ZVS operation of both main and auxiliary switches is achieved and the switching loss is significantly reduced. Moreover, the ripple component of the output inductor current is effectively removed and the output filter stage can be simplified. To verify the feasibility and performance of the proposed converter, an experimental prototype was built and tested.

Zero-Voltage-Switching Buck-Boost Converter with a Coupled Inductor Based on Magnetic Materials

2012 ◽  
Vol 459 ◽  
pp. 51-53
Author(s):  
Hyun Lark Do
Keyword(s):  
Steady State ◽  
Magnetic Materials ◽  
Boost Converter ◽  
Experimental Results ◽  
Switching Loss ◽  
Steady State Analysis ◽  
Zero Voltage Switching ◽  
Power Switches ◽  
Zero Voltage ◽  
Voltage Switching

A zero-voltage-switching (ZVS) buck-boost converter with a coupled inductor based on magnetic materials is proposed in this paper. An auxiliary circuit consisting of an additional winding to the main inductor, an auxiluary inductor, and an auxiliary diode is utilized to obtain the ZVS operation of power switches. Due to the ZVS operation, the switching loss is significantly reduced. The operation principle and steady-state analysis of the proposed converter are provided. A prototype of the proposed converter is developed, and its experimental results are presented for validation

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.

Series-Loaded Resonant Converter DC-DC Buck Operating for Low Power

2017 ◽  
Vol 8 (1) ◽  
pp. 159
Author(s):  
M. F. Omar ◽  
H. C. M. Haris
Keyword(s):  
Low Power ◽  
High Frequency ◽  
Buck Converter ◽  
Soft Switching ◽  
Switching Topology ◽  
Resonant Converter ◽  
Zero Voltage Switching ◽  
Bridge Rectifier ◽  
Zero Voltage ◽  
Voltage Switching

This paper presents the functions of Series-Loaded Resonant Converter (SLRC). Series Loaded Resonant DC-DC converter is a type of soft-switching topology widely known for providing improved efficiency. Zero voltage switching (ZVS) buck converter is more preferable over hard switched buck converter for low power, high frequency DC-DC conversion applications. Zero Voltage switching techniques will be used to improve the efficiency of current and voltage at the series loaded half-bridge rectifier. The results will be described from PSIM simulation, Programming of MATLAB calculation and hardware testing.

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