scholarly journals Removal of Initial Phase Transient Current in DC-DC Boost Converter using Modified Switched Inductor

2019 ◽  
Vol 8 (10) ◽  
pp. 3360-3364
Keyword(s):  
Initial Phase ◽  
High Gain ◽  
Boost Converter ◽  
Open Circuit ◽  
Transient Current ◽  
Voltage Gain ◽  
Matlab Simulink ◽  
High Voltage Gain ◽  
In Series ◽  
Converter Topology

This paper presents the removal of initial phase transient currents in an existing dc-dc boost converter topology with the help of a modified switched inductor cell. In an earlier proposed topology, a novel single switch boost converter was proposed with high voltage gain, which however gave a high initial transient current of the order of 26kA on simulating in MATLAB Simulink environment. This initial phase current was removed by placing a small valued inductor and a freewheeling diode in series with boost capacitor. The inductor is placed in parallel with the diode and creates an open circuit initially, this arrangement limits the current to a bearable value, i.e. approximately 180A, without compromising with the high gain of the cell. The results of the proposed modifications are validated using MATLAB Simulink.

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 Voltage Multiplier Based High Voltage Gain Transformerless Buck–Boost DC–DC Converter

2018 ◽  
Vol 27 (12) ◽  
pp. 1850188 ◽  
Author(s):  
Hossein Ajdar Faeghi Bonab ◽  
Mohamad Reza Banaei ◽  
Navid Taghizadegan Kalantari
Keyword(s):  
High Voltage ◽  
Boost Converter ◽  
Voltage Gain ◽  
Power Switch ◽  
High Voltage Gain ◽  
Voltage Stress ◽  
Converter Topology ◽  
Mathematical Analyses ◽  
State Resistance ◽  
Switch Voltage

In this paper, a new transformerless buck–boost converter is introduced. The proposed converter voltage gain is higher that of the conventional buck–boost converter. In the presented converter, only one power switch is used. The switch voltage stress is low, therefore, the low on-state resistance of the power switch can be selected to decrease losses of the switch. The presented converter topology is simple, hence the control of the converter will be simple. The mathematical analyses and principle of the proposed converter are explained. The validity of the proposed converter is confirmed by the experimental 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 Implementation of Three Phase High Voltage Gain Boost Converter for Fuel Cell

2020 ◽  
Vol 06 (09) ◽  
pp. 156-160
Author(s):  
N. Lalitha Rani and S. Ramyaka
Keyword(s):  
Fuel Cell ◽  
High Voltage ◽  
Output Voltage ◽  
Electric Energy ◽  
Boost Converter ◽  
High Voltage Gain ◽  
Three Phase ◽  
In Series ◽  
Converter Topology ◽  
And Inversion

Generally, the power generating from the Fuel cell is an electrochemical reaction between H2 and oxygen and it generates electric energy, and the by-product is water vapour. However, the output from the fuel cell systemsis very low, then it becomes necessary to connect more number of cells in series to improve the output. The proposed method electrically divides the fuel cell stack into different sections, and each stack is powered by a direct boost inverter. This paper proposes a concept of high voltage dc-dc boost converter topology for a three phase systemto a typical output voltage from the fuel cell as a stand-alone supply. The main advantage of the proposed boost inverter method include ability to deliver the operations of both boosting and inversion of the power in only one stage, compactness, and economical. The output voltage from the fuel cell is a voltage controlled method and output from the battery is a current controlled method. Analysis, and Simulation are taken from a 1kW prototype.

scholarly journals High Gain and Reduced Switch Stress DC-DC Converter Topology for PV System

2018 ◽  
Vol 7 (04) ◽  
pp. 23808-23816
Author(s):  
C. Srideepa ◽  
S.Sathish Kumar ◽  
R. Nagarajan
Keyword(s):  
High Gain ◽  
Photovoltaic System ◽  
Voltage Gain ◽  
Pv System ◽  
Power Switch ◽  
High Voltage Gain ◽  
Voltage Stress ◽  
Converter Topology ◽  
State Resistance ◽  
Two Hybrid

This paper presents a new high step-up isolated DC-DC converter topology for photovoltaic system. The suggested configuration provides a converter with high voltage gain and reduced switch stress by using three coupled inductor with two hybrid voltage multiplier cell. The operation of the proposed converter is based on a charging capacitor with a single switch in its structure. A passive clamp circuit composed of capacitors and diodes is employed in the converter structure for lowering the voltage stress on the power switch as well as increasing the voltage gain of the converter. Since the voltage stress is low in the provided topology, a switch with a small ON-state resistance can be used. As a result, the losses are decreased and the efficiency is increased. The design of DC-DC boost converter is also discussed in detail. Simulation of DC-DC converter is performed in MATLAB/Simulink and the result are verified

scholarly journals Design of New High Step-Up DC-DC Converter Topology for Solar PV Applications

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Shanthi Thangavelu ◽  
Prabha Umapathy
Keyword(s):  
Low Voltage ◽  
High Gain ◽  
Performance Comparison ◽  
Duty Ratio ◽  
Voltage Gain ◽  
Solar Pv ◽  
High Voltage Gain ◽  
Voltage Stress ◽  
Converter Topologies ◽  
Converter Topology

A new topology for high step-up nonisolated DC-DC converter for solar PV applications is presented in this paper. The proposed high-voltage gain converter topology has many advantages like low-voltage stress on the switches, high gain with low duty ratio, and a continuous input current. The analytical waveforms of the proposed converter are presented in continuous and discontinuous modes of operation. Voltage stress analysis is conducted. The voltage gain and efficiency of the converter in presence of parasitic elements are also derived. Performance comparison of the proposed high-gain converter topology with the recently reported high-gain converter topologies is presented. Validation of theoretical analysis is done through the test results obtained from the simulation of the proposed converter. For the maximum duty ratio of 80%, the output voltage of 670 V is observed, and the voltage gain obtained is 14. Comparison of theoretical and simulation results is presented which validates the performance of the proposed converter.

scholarly journals High gain multiphase boost converter based-on capacitor clamping structure

2021 ◽  
Vol 24 (2) ◽  
pp. 689
Author(s):  
Oday Saad Fares ◽  
Jasim Farhood Hussen
Keyword(s):  
High Voltage ◽  
Output Voltage ◽  
Low Voltage ◽  
High Gain ◽  
Industrial Applications ◽  
Boost Converter ◽  
Power Device ◽  
Voltage Gain ◽  
High Voltage Gain ◽  
And Performance

<p>In the last few years, the non-isolated dc converters involving high voltage gain with adequate performance are becoming quite popular in industrial applications. This is resulting in high voltage and current stress on the power device (switches and diodes), as well as a limited output voltage with a high duty cycle. This paper proposes a multi-phase non-isolated boost converter that uses capacitor clamping to increase output voltage while reducing stress across the power device. There are two stages in the proposed converter (first stage is three inductors and three switches and the second stage is clamper circuit of three capacitors and three diodes). The proposed converter is high voltage gain, with low voltage stress through switches transistors. To justify the theoretical analysis, the concept was validated through mathematical analysis and by simulation using MATLAB/SIMULINK. The results carried out the results permit the converter behavior and performance to be accurately.</p>

scholarly journals Design and Analysis of a Novel High-Gain DC-DC Boost Converter with Low Component Count Title

Electronics ◽  
2021 ◽  
Vol 10 (15) ◽  
pp. 1761
Author(s):  
Usman Rafiq ◽  
Ali Faisal Murtaza ◽  
Hadeed A. Sher ◽  
Dario Gandini
Keyword(s):  
High Voltage ◽  
High Gain ◽  
Boost Converter ◽  
Passive Component ◽  
Voltage Gain ◽  
Industrial Control ◽  
High Voltage Gain ◽  
Electrical Vehicles ◽  
Reliable Performance ◽  
Distribution Grids

In this paper, a novel high-gain DC-DC boost converter with reduced component count is proposed. The converter that is proposed in this paper provides high DC voltage gain, while keeping the overall component count significantly lower in comparison to some similar high voltage gain DC-DC converters presented recently. The proposed converter uses only one power switch, two inductors, two capacitors, and three didoes to achieve high-voltage gain, without a significant compromise on the efficiency. In addition, the proposed design uses small passive component sizes compared to other similar designs of the same power rating. Due to the reduced component count, and hence the small physical size, the proposed converter will find applications in several practical domains, ranging from industrial control embedded systems to the DC transmission bus bars in fully electrical vehicles and renewable energy distribution grids. A 250 Watts prototype of this newly proposed DC-DC boost converter was implemented and simulated using the PSIM simulation tool. The promising simulation results proved the reliable performance of the proposed DC-DC boost converter design.

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