scholarly journals High Output Voltage Gain DC/DC Boost Converter Suitable For Renewable Energy Applications

2021 ◽  
Vol 44 (2) ◽  
pp. 141-148
Author(s):  
Elhassan Amer ◽  
Arafa S. Mansour ◽  
Elwy Elkholy
Keyword(s):  
Renewable Energy ◽  
Output Voltage ◽  
Boost Converter ◽  
Voltage Gain ◽  
Energy Applications ◽  
High Output Voltage ◽  
High Output

scholarly journals High Gain Boost Converter with Reduced Voltage in Capacitors for Fuel-Cells Energy Generation Systems

Electronics ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1480 ◽  
Author(s):  
Javier Loranca-Coutiño ◽  
Carlos A. Villarreal-Hernandez ◽  
Jonathan C. Mayo-Maldonado ◽  
Jesús E. Valdez-Resendiz ◽  
Adolfo R. Lopez-Nuñez ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Fuel Cell ◽  
Output Voltage ◽  
High Gain ◽  
Boost Converter ◽  
Voltage Gain ◽  
Gain Function ◽  
Energy Applications ◽  
Major Benefit ◽  
Desirable Feature

This work presents a power-electronics based system for renewable energy applications, the system is driven with an only one switch quadratic type boost converter, the discussed converter is based on a stack of switching stages which provide a large voltage gain, a desirable feature for fuel cell generation systems, the converters gain function is the quadratic boost-type converters; furthermore, the topology can be extended. The major benefit of the topology is that there is not a capacitor that sustains the entire output voltage, in contrast to other similar topologies in which there is a capacitor rated to the output port voltage, there is no high voltage capacitor in this system. Experimental verification is presented to confirm the system principles; experiments included a fuel cell emulator that was built and used for the experiments.

scholarly journals A Voltage Multiplier Circuit Based Quadratic Boost Converter for Energy Storage Application

2020 ◽  
Vol 10 (22) ◽  
pp. 8254
Author(s):  
Javed Ahmad ◽  
Mohammad Zaid ◽  
Adil Sarwar ◽  
Chang-Hua Lin ◽  
Shafiq Ahmad ◽  
...  
Keyword(s):  
Output Voltage ◽  
Low Voltage ◽  
High Gain ◽  
Boost Converter ◽  
Voltage Gain ◽  
Voltage Multiplier ◽  
High Voltage Gain ◽  
Power Application ◽  
High Output Voltage ◽  
Multiplier Circuit

In this paper, a new transformerless high voltage gain dc-dc converter is proposed for low and medium power application. The proposed converter has high quadratic gain and utilizes only two inductors to achieve this gain. It has two switches that are operated simultaneously, making control of the converter easy. The proposed converter’s output voltage gain is higher than the conventional quadratic boost converter and other recently proposed high gain quadratic converters. A voltage multiplier circuit (VMC) is integrated with the proposed converter, which significantly increases the converter’s output voltage. Apart from a high output voltage, the proposed converter has low voltage stress across switches and capacitors, which is a major advantage of the proposed topology. A hardware prototype of 200 W of the proposed converter is developed in the laboratory to validate the converter’s performance. The efficiency of the converter is obtained through PLECS software by incorporating the switching and conduction losses.

scholarly journals A Generalized Multilevel Inverter Based on T-Type Switched Capacitor Module with Reduced Devices

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4406
Author(s):  
Yaoqiang Wang ◽  
Yisen Yuan ◽  
Gen Li ◽  
Tianjin Chen ◽  
Kewen Wang ◽  
...  
Keyword(s):  
Output Voltage ◽  
Low Voltage ◽  
Multilevel Inverter ◽  
Switched Capacitor ◽  
Voltage Gain ◽  
Voltage Balancing ◽  
Multilevel Inverters ◽  
Photovoltaic Power ◽  
High Output Voltage ◽  
High Output

Conventional multilevel inverters have problems in terms of their complicated expansion and large number of devices. This paper proposes a modular expanded multilevel inverter, which can effectively simplify the expansion and reduce the number of devices. The proposed inverter can ensure the voltage balancing of the voltage-dividing capacitors. The cascading of the T-type switched capacitor module and the step-by-step charging method of the switched capacitors enable the inverter to achieve high output voltage levels and voltage gain. In addition, the inversion can be achieved without the H-bridge, which greatly reduces the total standing voltage of the switches. The nine-level inverter of the proposed topology can be realized with only ten switches, obtaining a voltage gain that is two times larger. The above merits were validated through theoretical analysis and experiments. The proposed inverter has good application prospects in medium- and low-voltage photovoltaic power generation.

scholarly journals Numerical Optimization of Switching Ripples in the Double Dual Boost Converter through the Evolutionary Algorithm L-SHADE

Mathematics ◽  
2020 ◽  
Vol 8 (11) ◽  
pp. 1911
Author(s):  
Alma Rodríguez ◽  
Avelina Alejo-Reyes ◽  
Erik Cuevas ◽  
Héctor R. Robles-Campos ◽  
Julio C. Rosas-Caro
Keyword(s):  
Renewable Energy ◽  
Evolutionary Algorithm ◽  
Output Voltage ◽  
Pulse Width Modulation ◽  
The Other ◽  
Voltage Gain ◽  
Energy Applications ◽  
Duty Cycles ◽  
Population Reduction ◽  
Adaptive Differential Evolution

Power-electronics based converters are essential circuits in renewable energy applications such as electricity generated with photovoltaic panels. The research on the field is getting increasing attention due to climate change problems and their possible attenuation with the use of renewable energy. Mathematical models of the converters are being used to optimize several aspects of their operation. This article is dedicated to optimizing (through the mathematical model and an evolutionary algorithm) the operation of a state-of-the-art converter. The converter, which is composed of two parts or phases, is controlled by pulse width modulation with two switching signals (one for each phase). The converter provides by itself low switching ripple in both the output voltage and the input current, which is beneficial for renewable energy applications. In the traditional operation, one of the switching signals has an algebraic dependence on the other one. This article proposes a new way to select the duty cycle for both signals. In the proposed method, duty cycles of both phases are considered independent of each other; this provides an extra degree of freedom; on the other hand, this produce that the possible combinations of duty cycles which produce a certain voltage gain is infinite, it becomes a problem with infinite possible solutions. The proposed method utilizes the a linear success-history based adaptive differential evolution with linear population reduction, also called L-SHADE algorithm for simplicity, to find the two duty cycles that achieve the desired voltage gain and to minimize the converters switching ripple. The obtained results are compared with the former operation of the converter; the proposed operation achieves a lower output voltage ripple while achieving the desired operation (voltage gain).

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