Soft-Switching High Voltage Gain DC-DC Converter with Coupled Inductor and Voltage Multiplier Rectifier for Renewable Energy Sources

2019 ◽  
Author(s):  
L. Narayana Chintalapudi ◽  
H. M. Suryawanshi ◽  
Vijaya Vardhan Reddy P ◽  
Pratik Nachankar
Keyword(s):  
Renewable Energy ◽  
High Voltage ◽  
Renewable Energy Sources ◽  
Soft Switching ◽  
Energy Sources ◽  
Voltage Gain ◽  
Voltage Multiplier ◽  
High Voltage Gain

scholarly journals Design and Implementation a Single-Switch Step-Up DC-DC Converter Based on Cascaded Boost and Luo Converters

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3584
Author(s):  
Hossein Gholizadeh ◽  
Reza Sharifi Shahrivar ◽  
Mir Hashemi ◽  
Ebrahim Afjei ◽  
Saman A. Gorji
Keyword(s):  
Renewable Energy ◽  
High Voltage ◽  
High Efficiency ◽  
Renewable Energy Sources ◽  
Voltage Gain ◽  
Ideal Model ◽  
Energy Applications ◽  
High Duty Cycle ◽  
Power Switch ◽  
High Voltage Gain

We designed and implemented a single-switch step-up DC-DC converter based on cascaded boost and Luo converters. The proposed converter demonstrated a quadratic voltage gain and a high efficiency, which makes it suitable for renewable energy applications, where a high voltage gain ratio is desired without imposing a high number of bulky items or employing a high duty cycle of the active switches. This converter benefits from the continuity of the input current waveform, which equips the maximum utilisation of renewable energy sources. While a transformer-less high voltage-gain was achieved, the voltage and current stresses of the power switch and diodes were kept low in comparison with the existing quadratic DC-DC converters. We analysed the converter in both continuous and discontinuous conduction modes. A non-ideal model of components was considered for power loss and efficiency calculations and comparisons. Finally, the simulation results were extracted with PLECS and validated with experiments on a 120 W prototype.

scholarly journals Interleaved Multistage Step-Up Topologies with Voltage Multiplier Cells

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5990
Author(s):  
Ahmad Alzahrani ◽  
Pourya Shamsi ◽  
Mehdi Ferdowsi
Keyword(s):  
Low Voltage ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Voltage Gain ◽  
Boost Converters ◽  
Voltage Multiplier ◽  
Current Sharing ◽  
High Voltage Gain ◽  
Voltage Stress ◽  
Number Of Cells

This paper proposes a family of high-voltage-gain step-up dc-dc converters for photovoltaic integration application. The proposed converters are capable of converting the low voltage from input sources to a dc bus. The proposed family is constructed of interleaved single-switch multistage boost converters and voltage multiplier cells (VMC). The proposed converters feature low voltage stress across the components, equal current sharing among all phases, and a smooth input current. Moreover, the proposed family of converters has a modular structure in both the VMC and the boost stage. That is, the VMC can have N number of cells, and the boost stage can have k number of stages. The k can be different in each phase, allowing the designers to integrate two independent renewable energy sources with different output voltages. An example converter was explained, analyzed, and simulated. An 80 W hardware prototype was implemented to confirm the converter’s operation and validate the analysis.

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