A Wide Input-Voltage Range Quasi-Z-Source Boost DC–DC Converter With High-Voltage Gain for Fuel Cell Vehicles

A high voltage gain modified SEPIC converter is proposed in this paper. This proposed converter has many advantages i.e., high output voltage, lower voltage stress, high efficiency, voltage gain is high without any coupled inductor and transformer, continuous input current. Thus, there is no overshoot voltage at turn-off process for switches. By using single switches, the CCM mode operation can be easily controlled by this converter, so control system is simple and also wide output values is obtained only by modifying the duty cycle. This modified converter has lower components than conventional converter. The operating modes and design of modified converter are discussed. The output power of this converter is 6 watts. By this converter, this converter capable of developing the two and half times of input voltage. The PV system also used this converter to develop high voltage gain. This high voltage gain is achieved by using MATLAB/SIMULIMK platform.

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Design and simulation of High Voltage Gain current fed full-bridge voltage doubler Converter Fed Multilevel Inverter for Fuel Cell Powered Electric Vehicle

International Journal of Emerging Trends in Engineering Research ◽

10.30534/ijeter/2020/207892020 ◽

2020 ◽

Vol 8 (9) ◽

pp. 6191-6195

Keyword(s):

Fuel Cell ◽

Electric Vehicle ◽

High Voltage ◽

Multilevel Inverter ◽

Voltage Gain ◽

High Voltage Gain ◽

Voltage Doubler

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High Step-Up Boost Converter with Neural Network Based MPPT Controller for a PEMFC Power Source Used in Vehicular Applications

International Journal of Emerging Electric Power Systems ◽

10.1515/ijeeps-2018-0015 ◽

2018 ◽

Vol 19 (5) ◽

Cited By ~ 2

Author(s):

K. Jyotheeswara Reddy ◽

N. Sudhakar ◽

S. Saravanan ◽

B. Chitti Babu

Keyword(s):

Neural Network ◽

Fuel Cell ◽

Electric Vehicles ◽

High Voltage ◽

Boost Converter ◽

Maximum Power ◽

Switching Frequency ◽

Voltage Gain ◽

High Voltage Gain ◽

Mppt Controller

AbstractHigh switching frequency and high voltage gain DC-DC boost converters are required for electric vehicles. In this paper, a new high step-up boost converter (HSBC) is designed for fuel cell electric vehicles (FCEV) applications. The designed converter provides the better high voltage gain compared to conventional boost converter and also reduces the input current ripples and voltage stress on power semiconductor switches. In addition to this, a neural network based maximum power point tracking (MPPT) controller is designed for the 1.26 kW proton exchange membrane fuel cell (PEMFC). Radial basis function network (RBFN) algorithm is used in the neural network controller to extract the maximum power from PEMFC at different temperature conditions. The performance analysis of the designed MPPT controller is analyzed and compared with a fuzzy logic controller (FLC) in MATLAB/Simulink environment.

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Design Method of Double-Boost DC/DC Converter with High Voltage Gain for Electric Vehicles

World Electric Vehicle Journal ◽

10.3390/wevj11040064 ◽

2020 ◽

Vol 11 (4) ◽

pp. 64 ◽

Cited By ~ 2

Author(s):

Zhengxin Liu ◽

Jiuyu Du ◽

Boyang Yu

Keyword(s):

Electric Vehicles ◽

High Voltage ◽

Direct Current ◽

Output Voltage ◽

Input Voltage ◽

Maximum Efficiency ◽

Voltage Gain ◽

Current Feedback ◽

Voltage Ripple ◽

High Voltage Gain

Direct current to direct current (DC/DC) converters are required to have higher voltage gains in some applications for electric vehicles, high-voltage level charging systems and fuel cell electric vehicles. Therefore, it is greatly important to carry out research on high voltage gain DC/DC converters. To improve the efficiency of high voltage gain DC/DC converters and solve the problems of output voltage ripple and robustness, this paper proposes a double-boost DC/DC converter. Based on the small-signal model of the proposed converter, a double closed-loop controller with voltage–current feedback and input voltage feedforward is designed. The experimental results show that the maximum efficiency of the proposed converter exceeds 95%, and the output voltage ripple factor is 0.01. Compared with the traditional boost converter and multi-phase interleaved DC/DC converter, the proposed topology has certain advantages in terms of voltage gain, device stress, number of devices, and application of control algorithms.

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

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.573.83 ◽

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.

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