An industrial design of 400 V – 48 V, 98.2% peak efficient charger using E‐mode GaN technology with wide operating ranges for xEV applications

Author:

Narasipuram Rajanand Patnaik12ORCID,Mopidevi Subbarao1ORCID

Affiliation:

1. Department of Electrical and Electronics Engineering Vignan's Foundation for Science Technology and Research Guntur India

2. Eaton India Innovation Center LLP Pune India

Abstract

AbstractThis paper offers a wide‐operating range electric vehicle charger design by employing an interleaved inductor–inductor–capacitor iL2C DC–DC converter. It uses two parallel L2C converters with 8‐GaN switches on the primary side and a shared rectifier circuit on the secondary side, which it also enhances the circulating current, conduction losses, and current sharing. For iL2C converter, a constant voltage charging mode of operation is designed, also it proposes a hybrid control scheme of variable frequency + phase shift modulation (VFPSM). The entire concept is designed, simulated, and validated with a rated input voltage and load voltage of three different load conditions with converter line and load regulations are analyzed. To evaluate controller and converter performance, the idea is proven experimentally for variable load condition of full load, half load, light load with a rated input and output voltage of 400 Vin–48 V0. In addition, line regulation is also performed and validated for wide input voltage application of 300 Vin–500 Vin with an output voltage of 48 V0 at full load and peak efficiency of 98.2% is determined. Further, to provide the system effectiveness converter efficiencies are presented at various load operations from 3.3 kW to 330 W.

Publisher

Wiley

Subject

Electrical and Electronic Engineering,Computer Science Applications,Modeling and Simulation

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