Abstract
In this paper, a new three-level boost converter with continuous input current, common ground, reduced voltage stress on the power switches, and wide voltage gain range is proposed. The proposed converter is composed of a three-level flying-capacitor switching cell and an integrated LC2D output network. The LC2D output network enhances the voltage gain of the converter and reduces the voltage stress on the power switches. The proposed converter is a good candidate to interface fuel cells to the dc-link bus of the three-phase inverter of an electric vehicle (EV). A full steady-state analysis of the proposed converter in the continuous conduction mode (CCM) is given in this paper. A 1.2 kW scaled-down laboratory setup was built using gallium nitride (GaN) transistors and silicon carbide (SiC) diodes to verify the feasibility of the proposed converter.
Highlights
There is a growing global interest in reducing greenhouse gases by developing new clean energy technologies that address the challenges associated with the increasing penetration of renewable energy systems and the need to reduce fossil fuel consumption
Ron and QGD compared with the gallium nitride (GaN) enhancement high-electron mobility transistor (E-HEMT); if the power electronics designer can afford the time to optimize the printed circuit board (PCB) to minimize the power loop and the gate-to-source-loop parasitic inductances, the utilization of the GaN E-HEMT is recommended
The fuel cell is depicted by a dc-voltage source
Summary
There is a growing global interest in reducing greenhouse gases by developing new clean energy technologies that address the challenges associated with the increasing penetration of renewable energy systems and the need to reduce fossil fuel consumption. The increasing number of automobiles worldwide is a growing problem, because they contribute to air pollution. A lot of research and development is being targeted to develop new fully electric vehicles (EVs) powered by clean energies. Fuel cell-powered EVs are a big contributor to the electrification of automobiles. As a source of electrical energy, have the following features: pollution-free operation, high-density current output, and high efficiency [1]. Fuel cells are unlike batteries, as they have soft output characteristics, in that their output voltage drops drastically when the output current increases [2]
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