A three-phase soft-transition inverter with a novel control strategy for zero-current and near zero-voltage switching

2001 ◽  
Vol 16 (5) ◽  
pp. 710-723 ◽  
Author(s):  
Yong Li ◽  
F.C. Lee ◽  
D. Boroyevich
Keyword(s):  
Control Strategy ◽  
Zero Voltage Switching ◽  
Zero Current ◽  
Three Phase ◽  
Zero Voltage ◽  
Voltage Switching

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.

scholarly journals Event-Focused Digital Control to Keep High Efficiency in a Wide Power Range in a SiC-Based Synchronous DC/DC Boost Converter

Electronics ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 2154
Author(s):  
María R. Rogina ◽  
Alberto Rodríguez ◽  
Aitor Vázquez ◽  
Diego G. Lamar ◽  
Marta M. Hernando
Keyword(s):  
Control Strategy ◽  
Digital Control ◽  
High Efficiency ◽  
Wave Mode ◽  
Power Losses ◽  
Control Approach ◽  
Zero Voltage Switching ◽  
Zero Voltage ◽  
Conduction Mode ◽  
Voltage Switching

This paper is focused on the design of a control approach, based on the detection of events and changing between two different conduction modes, to reach high efficiency over the entire power range, especially at medium and low power levels. Although the proposed control strategy can be generalized for different topologies and specifications, in this paper, the strategy is validated in a SiC-based synchronous boost DC/DC converter rated for 400 V to 800 V and 10 kW. Evaluation of the power losses and current waveforms of the converter for different conduction modes and loads predicts suitable performance of quasi-square wave mode with zero voltage switching (QSW-ZVS) conduction mode for low and medium power and of continuous conduction Mode with hard switching (CCM-HS) for high power. Consequently, this paper proposes a control strategy, taking advantage of digital control, that allows automatic adjustment of the conduction mode to optimize the performance for different power ranges.

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