scholarly journals A Novel Single-Switch High Step-Up DC–DC Converter with Three-Winding Coupled Inductor

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6288
Author(s):  
Aline V. C. Pereira ◽  
Marcelo C. Cavalcanti ◽  
Gustavo M. Azevedo ◽  
Fabrício Bradaschia ◽  
Rafael C. Neto ◽  
...  
Keyword(s):  
Magnetic Coupling ◽  
Switching Loss ◽  
Current Switching ◽  
Conduction Loss ◽  
High Voltage Gain ◽  
Zero Current Switching ◽  
Zero Current ◽  
Voltage Stress ◽  
Photovoltaic Applications ◽  
Coupling Techniques

This paper introduces a single-switch, high step-up DC–DC converter for photovoltaic applications such as power optimizers and microinverters. The proposed converter employs two voltage multipliers cells with switched capacitor and magnetic coupling techniques to achieve high voltage gain. This feature, along with a passive clamp circuit, reduces the voltage stress across the switch, allowing for the employment of low RDSon MOSFET. This leads to low conduction loss of the switch. The diodes operate with zero-current switching at their turn-off transition, eliminating the reverse recovery losses. Additionally, the switch turns on with zero-current switching, leading to insignificant switching loss associated with its turn-on transition. The operation principle and steady-state analysis are presented and validated through experimental results obtained from a 140 W prototype of the proposed converter.

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.

Erratum to: A New High-Voltage-Gain Non-Isolated Zero-Current-Switching Bidirectional DC–DC Converter

2017 ◽  
Vol 44 (3) ◽  
pp. 2857-2857
Author(s):  
Rajesh Thumma ◽  
Veera Venkata Subrahmanya Kumar Bhajana ◽  
Pavel Drabek ◽  
Martin Jara
Keyword(s):  
High Voltage ◽  
Voltage Gain ◽  
Current Switching ◽  
High Voltage Gain ◽  
Zero Current Switching ◽  
Zero Current

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 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.

A New High-Voltage Gain Non-Isolated Zero-Current-Switching Bidirectional DC–DC Converter

2017 ◽  
Vol 43 (6) ◽  
pp. 2713-2723 ◽  
Author(s):  
Rajesh Thumma ◽  
Veera Venkata Subrahmanya Kumar Bhajana ◽  
Pavel Drabek ◽  
Martin Jara
Keyword(s):  
High Voltage ◽  
Voltage Gain ◽  
Current Switching ◽  
High Voltage Gain ◽  
Zero Current Switching ◽  
Zero Current
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