scholarly journals A novel PV based high voltage gain soft switching DC-DC boost converter

2018 ◽  
Vol 7 (3) ◽  
pp. 1034
Author(s):  
Ingilala Jagadeesh ◽  
V Indragandhi
Keyword(s):  
High Voltage ◽  
Design Procedure ◽  
Boost Converter ◽  
Soft Switching ◽  
Oxide Semiconductor ◽  
Voltage Gain ◽  
Leakage Inductance ◽  
High Voltage Gain ◽  
Zero Current Switching ◽  
Zero Current

The design of high voltage gain DC-DC boost converter is carried out with the addition of the Voltage Multiplier (VM) method. Here the coupled inductor and VM methodologies are proposed to reduce the switching and conduction losses of the Metal Oxide Semiconductor Field Effect Transistor (MOSFET). The Zero Current Switching (ZCS) technique with coupled inductor leakage inductance is used to operate the MOSFET. The leakage inductance is used to decrease the reverse recovery current across the diode. The design procedure of the boost converter and corresponding output waveforms are presented in this paper. Photovoltaic (PV) source converter with coupling inductors soft switching technique has been analyzed and tested in this paper.  

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

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

Soft-switching interleaved boost converter with high voltage gain

2008 ◽  
Author(s):  
R.N.A.L. Silva ◽  
G.A.L. Henn ◽  
P.P. Praca ◽  
L.H.S.C. Barreto ◽  
D.S. Oliveira ◽  
...  
Keyword(s):  
High Voltage ◽  
Boost Converter ◽  
Soft Switching ◽  
Voltage Gain ◽  
High Voltage Gain ◽  
Interleaved Boost Converter

scholarly journals A Transformer-Less Buck-Boost Grid-Tied Inverter with Low Leakage-Current and High Voltage-Gain

2021 ◽  
Vol 11 (8) ◽  
pp. 3625
Author(s):  
Chien-Hsuan Chang ◽  
Yi-Fan Chen
Keyword(s):  
Leakage Current ◽  
High Voltage ◽  
Input Voltage ◽  
Boost Converter ◽  
Oxide Semiconductor ◽  
Voltage Gain ◽  
Low Leakage ◽  
High Voltage Gain ◽  
Low Leakage Current ◽  
Circuit Structure

To improve the efficiency of photovoltaic (PV) grid-tied systems and simplify the circuit structure, many pseudo DC-link inverters have been proposed by combining a sinusoidal pulse-width modulation (SPWM) controlled buck-boost converter and a low-frequency polarity unfolder. However, due to the non-ideal characteristics of power diodes, the voltage-gain of a buck-boost converter is limited. To meet the needs of grid-connected systems with low input voltage and 220 Vrms utility, this paper uses two two-switch buck-boost converters with coupled inductors to develop a transformer-less buck-boost grid-tied inverter with low leakage-current and high voltage-gain. The proposed inverter is charging on the primary side of the coupled inductor and discharging in series on the primary side and the secondary side so that the voltage-gain can be greatly increased. Furthermore, the utility line can be connected to the negative end of the PV array to suppress leakage current, and the unfolding circuit can be simplified to reduce the conduction losses. High-frequency switching is only performed in one metal-oxide-semiconductor field-effect transistor (MOSFET) in each mode, which can effectively improve conversion efficiency. A prototype was implemented to obtain experimental results and to prove the validity of the proposed circuit structure.

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