scholarly journals A bidirectional resonant converter based on wide input range and high efficiency for photovoltaic application

2019 ◽  
Vol 10 (3) ◽  
pp. 1469 ◽  
Author(s):  
Ibrahim Alhamrouni ◽  
M. R. Bin Hamzah ◽  
Mohamed Salem ◽  
Awang Jusoh ◽  
Azhar Bin Khairuddin ◽  
...  
Keyword(s):  
High Efficiency ◽  
Voltage Regulation ◽  
Resonant Converter ◽  
Power Conditioning ◽  
Dc Voltage ◽  
Switching Losses ◽  
Photovoltaic Application ◽  
Series Resonant ◽  
Input Range ◽  
Selection Of

<span lang="EN-US">This work highlights a modular power conditioning system (PCS) in photovoltaic (PV) applications which consists with a DC-DC converter. The converter is able to regulate and amplify the input DC voltage produced by the PV panal. The implementation of Mosfet as bidirectional switch on the converter yields greater conversion ratio and better voltage regulation than a conventional DC-DC step up converter and PWM resonant converter. It also reduces the switching losses on the output DC voltage of the converter, as the MOSFET switches on primary winding of converter switch on under ZVS conditions. The proposed resonant converter has been designed, with the modification of series resonant converter and PWM boost converter that utilizes the high frequency of AC bidirectional switch to eliminate the weaknesses of used converters. The topology of the proposed converter includes the mode of operations, designing procedure and components selection of the new converter elements. This topology provides a DC output voltage to the inverter at range of about 120Vac-208 Vac. </span>

Design and Implementation of LLC Resonant Converter for Photovoltaic Battery Charging Application

2015 ◽  
Vol 785 ◽  
pp. 101-105
Author(s):  
Adrian Soon Theam Tan ◽  
Shahid Iqbal
Keyword(s):  
High Efficiency ◽  
Input Voltage ◽  
Voltage Regulation ◽  
Photovoltaic System ◽  
Resonant Converter ◽  
Battery Charging ◽  
Zero Voltage Switching ◽  
Design And Implementation ◽  
Switching Losses ◽  
Llc Resonant Converter

Photovoltaic power conditioning system (PVPCS) requires a high efficiency dc-dc converterstage capable of wide input voltage regulation and have the ease of maximum power point implementation for both stand alone photovoltaic system and grid-connected system. Galvanic isolation at the dc-dc stage can replace the isolation needed in the inverter stage and thus reduce the sizeof isolation transformer and increases overall system efficiency. This paper presents detailed analysis,design and implementation of a LLC resonant converter for photovoltaic battery charging application.The LLC resonant converter operate with zero voltage switching (ZVS) turn on and low current turnoff thus reducing switching losses. The experimental results are given to validate the operation andperformance of the converter.

scholarly journals Step-Up Series Resonant DC–DC Converter with Bidirectional-Switch-Based Boost Rectifier for Wide Input Voltage Range Photovoltaic Applications

Energies ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3747 ◽  
Author(s):  
Abualkasim Bakeer ◽  
Andrii Chub ◽  
Dmitri Vinnikov
Keyword(s):  
Theoretical Analysis ◽  
Duty Cycle ◽  
Input Voltage ◽  
Voltage Regulation ◽  
Switching Frequency ◽  
Voltage Gain ◽  
Voltage Range ◽  
Dc Voltage ◽  
Wide Range ◽  
Series Resonant

This paper proposes a high gain DC–DC converter based on the series resonant converter (SRC) for photovoltaic (PV) applications. This study considers low power applications, where the resonant inductance is usually relatively small to reduce the cost of the converter realization, which results in low-quality factor values. On the other hand, these SRCs can be controlled at a fixed switching frequency. The proposed topology utilizes a bidirectional switch (AC switch) to regulate the input voltage in a wide range. This study shows that the existing topology with a bidirectional switch has a limited input voltage regulation range. To avoid this issue, the resonant tank is rearranged in the proposed converter to the resonance capacitor before the bidirectional switch. By this rearrangement, the dependence of the DC voltage gain on the duty cycle is changed, so the proposed converter requires a smaller duty cycle than that of the existing counterpart at the same gain. Theoretical analysis shows that the input voltage regulation range is extended to the region of high DC voltage gain values at the maximum input current. Contrary to the existing counterpart, the proposed converter can be realized with a wide range of the resonant inductance values without compromising the input voltage regulation range. Nevertheless, the proposed converter maintains advantages of the SRC, such as zero voltage switching (ZVS) turn-on of the primary-side semiconductor switches. In addition, the output-side diodes are turned off at zero current. The proposed converter is analyzed and compared with the existing counterpart theoretically and experimentally. A 300 W experimental prototype is used to validate the theoretical analysis of the proposed converter. The peak efficiency of the converter is 96.5%.

scholarly journals Optimal Design of Multi-Output LLC Resonant Converter with Independently Regulated Synchronous Single-Switched Power-Regulator

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4341
Author(s):  
Sang Gab Park ◽  
Byoung Kuk Lee ◽  
Jong Soo Kim
Keyword(s):  
Electromagnetic Interference ◽  
Resonant Converter ◽  
Switching Losses ◽  
Zero Current Switching ◽  
Zero Current ◽  
Series Resonant ◽  
Power Switches ◽  
Voltage Doubler ◽  
Llc Resonant Converter ◽  
Secondary Side

This paper presents a tightly regulated multi-output isolated converter that employs only an independently regulated synchronous Single-Switched Post-Regulator (SSPR). The proposed converter is a highly accurate single-ended secondary side post-regulator based on a Series Resonant Converter (SRC); furthermore, it has a voltage-doubler characteristic. The proposed post-regulator requires only one auxiliary switch, in contrast with a bulky and expensive non-isolated DC–DC converter. Moreover, the added voltage-doubler can tightly regulate the slave output current. In addition, the voltage-doubler can improve electromagnetic interference characteristics and reduce switching losses arising from the Zero Current Switching (ZCS) operation of all power switches. The validity of the proposed converter is verified using experimental results obtained via a prototype converter applicable to an LED 3D TV power supply.

Computer-Aided Design and Optimization of High-Efficiency LLC Series Resonant Converter

2012 ◽  
Vol 27 (7) ◽  
pp. 3243-3256 ◽  
Author(s):  
Ruiyang Yu ◽  
Godwin Kwun Yuan Ho ◽  
Bryan Man Hay Pong ◽  
Bingo Wing-Kuen Ling ◽  
James Lam
Keyword(s):  
Computer Aided Design ◽  
High Efficiency ◽  
Resonant Converter ◽  
Design And Optimization ◽  
Series Resonant ◽  
Computer Aided ◽  
Aided Design

scholarly journals Optimal Design of a High Efficiency LLC Resonant Converter with a Narrow Frequency Range for Voltage Regulation

Energies ◽  
2018 ◽  
Vol 11 (5) ◽  
pp. 1124 ◽  
Author(s):  
Junhao Luo ◽  
Junhua Wang ◽  
Zhijian Fang ◽  
Jianwei Shao ◽  
Jiangui Li
Keyword(s):  
Optimal Design ◽  
High Efficiency ◽  
Voltage Regulation ◽  
Resonant Converter ◽  
Frequency Range ◽  
Llc Resonant Converter ◽  
Narrow Frequency Range

scholarly journals Isolated Soft Switching Current Fed Series LC Resonant DC-DC Convertor for Electrical Vehicle Application

2021 ◽  
Vol 12 (3) ◽  
pp. 3359-3367
Author(s):  
Anand Sharma Et.al
Keyword(s):  
Voltage Pulse ◽  
Short Interval ◽  
Resonant Converter ◽  
Tank Circuit ◽  
Zero Crossing ◽  
Semiconductor Switches ◽  
Switching Losses ◽  
Circulating Current ◽  
Series Resonant ◽  
Electrical Vehicle

The current fed series resonant converter for electrical vehicle application is offered in this paper. The converter is able to achieve ZVS for primary side semiconductor switches. In the overlap time of voltage and current at zero crossing series resonant tank circuit is gives short interval of resonant pulse. This resonant pulse provide natural voltage decrease for semiconductor switches and voltage pulse is zero earlier compare to current across switches and ZVS achieve for semiconductor switches. All devices turn off softly so dependency on snubber is decreased to clamp the voltage across the switches. Presented converter reduce the circulating current so switching losses is decreased and converter efficiency will improvise. The proposed converter is simulated in MATLAB Simulink environment to investigate and analyses the proposed converter.

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