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.

A ZVS DC-DC Converter with High Voltage Gain for Fuel Cell Systems

2014 ◽  
Vol 573 ◽  
pp. 83-88
Author(s):  
A. Marikkannan ◽  
B.V. Manikandan ◽  
S. Jeyanthi
Keyword(s):  
Fuel Cell ◽  
High Voltage ◽  
Output Voltage ◽  
System Analysis ◽  
Clean Energy ◽  
High Gain ◽  
Boost Converter ◽  
Voltage Gain ◽  
Zero Voltage Switching ◽  
High Voltage Gain

The interest toward the application of fuel cells is increasing in the last years mainly due to the possibility of highly efficient decentralized clean energy generation. The output voltage of fuel-cell stacks is generally below 50 V. Consequently, low-power applications with high output voltage require a high gain for proper operation. A zero-voltage-switching (ZVS) dc–dc converter with high voltage gain is proposed for fuel cell as a front-end converter. It consists of a ZVS boost converter stage and a ZVS half-bridge converter stage and two stages are merged into a single stage. The ZVS boost converter stage provides a continuous input current and ZVS operation of the power switches. The ZVS half-bridge converter stage provides a high voltage gain. The principle of operation and system analysis are presented. Theoretical analysis and simulation result of the proposed converter were verified.

A High Step-up DC-DC Converter Based on the Voltage Lift Technique for Renewable Energy Applications

2021 ◽  
Vol 13 (19) ◽  
pp. 11059
Author(s):  
Shahrukh Khan ◽  
Arshad Mahmood ◽  
Mohammad Zaid ◽  
Mohd Tariq ◽  
Chang-Hua Lin ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Common Ground ◽  
Closed Loop ◽  
Low Voltage ◽  
Renewable Energy Sources ◽  
Input Voltage ◽  
High Gain ◽  
Boost Converter ◽  
Open Loop ◽  
Voltage Gain

High gain DC-DC converters are getting popular due to the increased use of renewable energy sources (RESs). Common ground between the input and output, low voltage stress across power switches and high voltage gain at lower duty ratios are desirable features required in any high gain DC-DC converter. DC-DC converters are widely used in DC microgrids to supply power to meet local demands. In this work, a high step-up DC-DC converter is proposed based on the voltage lift (VL) technique using a single power switch. The proposed converter has a voltage gain greater than a traditional boost converter (TBC) and Traditional quadratic boost converter (TQBC). The effect of inductor parasitic resistances on the voltage gain of the converter is discussed. The losses occurring in various components are calculated using PLECS software. To confirm the performance of the converter, a hardware prototype of 200 W is developed in the laboratory. The simulation and hardware results are presented to determine the performance of the converter in both open-loop and closed-loop conditions. In closed-loop operation, a PI controller is used to maintain a constant output voltage when the load or input voltage is changed.

scholarly journals Design and Analysis of Single Switch Transformer Less DC-DC Converter with Universal Input Voltage for Fuel Cell based Vehicles

2021 ◽  
pp. 1262-1272
Author(s):  
R. Birundha ◽  
Dr. P. Maruthapandi
Keyword(s):  
Fuel Cell ◽  
Output Voltage ◽  
Common Ground ◽  
Life Time ◽  
Input Voltage ◽  
High Gain ◽  
Voltage Gain ◽  
Voltage Drops ◽  
Solar Powered ◽  
Output Characteristics

A new single switch solar powered high gain step-up DC-DC converter is proposed for plug-in hybrid battery charger in Electric vehicle (EV). The proposed topology utilizes a L2C3D2network to obtain high voltage gain and reduce the voltage stress on the power switch. Additionally, the proposed converter has a universal input voltage in order to suit the soft output characteristics of the fuel cell. The fuel cell has a relatively low output voltage and high current, and it has soft output characteristics as its output voltage drops as the output current increases. Therefore, the fuel cell cannot be directly interfaced to the dc-link bus (400V) of the inverter inside the EV. This dc-dc converter has a universal input voltage feature with wide voltage gain range to suit the soft output characteristics of the fuel cell. Additionally, this dc-dc converter has to have low input current ripple to prolong the life time of the fuel /solar cell, and a common ground between its input and output ports to avoid additional EMI and maintenance safety problem. This control strategy is modelled and simulated using MATLAB -Simulink. A proto type experimental has been fabricated and tested. The experimental analysis was done and the results are in line with the simulation results.

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 Novel Step-Up Power Converter Configuration for Solar Energy Application

2019 ◽  
Vol 25 (3) ◽  
pp. 50-55 ◽  
Author(s):  
Davood Ghaderi ◽  
Gokay Bayrak
Keyword(s):  
Renewable Energy ◽  
Duty Cycle ◽  
Renewable Energy Sources ◽  
High Gain ◽  
Power Converter ◽  
Boost Converter ◽  
Energy Sources ◽  
Switching Frequency ◽  
Voltage Gain ◽  
First Choice

Renewable Energy Sources (RES) including full cells, wind turbines, and photovoltaic panels, widely are spreading. Among all the renewable energy sources, solar power generation system tops the list. The first choice is the boost converter when the voltage step-up is the issue. But the most important subject is applying an efficient structure with high gain, cheap and quick controller circuit. Our proposed cascaded boost converter is one of such converters which consists of several cheap components such as diode, inductor, capacitor and power switch, which has same switching frequency and phase shift in comparison with conventional boost converters. In comparison with the classic cascaded boost converter, the voltage gain for the proposed structure is very high and by forming a preamplifier layer, for a duty cycle of 80 % by adding only two diodes, one inductor, and one capacitor for the second block, voltage gain is increased by 5 times compared to the classic boost converter. The proposed method provides the increased output voltage along with the duty cycle. The projected strategy has been verified with the help of Matlab/Simulink. Also, a hardware implementation of the proposed converter has been done around 200 W by applying a Jiangyin HR-200W-24V type solar panel.

scholarly journals Novel Interleaved High Gain Boost Converter Using Switched Capacitor

Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 8091
Author(s):  
Girish Ganesan Ramanathan ◽  
Naomitsu Urasaki
Keyword(s):  
Solar Energy ◽  
Energy Demand ◽  
Output Voltage ◽  
High Efficiency ◽  
High Gain ◽  
Boost Converter ◽  
Duty Ratio ◽  
Switched Capacitor ◽  
Analysis And Design ◽  
Energy Applications

The increase in global energy demand has led to increased research in harvesting solar energy. Solar energy is widely used in homes, electric vehicles and is a great solution to power remote areas. DC–DC converters are essential in extracting power from solar panels. One of the main problems in designing converters for solar energy applications is boosting the low output voltage of the solar panel to meaningful levels. While there are several topologies to achieve high gain, some of the problems faced by them are the extreme duty ratio, complex design and discontinuous input current. This paper presents a novel topology that uses an interleaved input, a voltage lift capacitor and a hybrid switched capacitor network to achieve high gain without an extreme duty ratio or bulky magnetics. The proposed converter is controlled using a microcontroller which regulates the output voltage. The voltage lift capacitor and the switched capacitor network enhances the voltage gain over a conventional boost converter without an extreme duty ratio. The analysis and design of the proposed converter are presented and verified with a 100 W prototype. The results show that the converter provides a gain of 10, at a duty ratio of 30%, while delivering the designed output power with considerably high efficiency.

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