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Modelling and Control of 50kW SiC DAB Converter for Off-Board Chargers of Battery Electric Buses
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| Author(s) |
Haaris RASOOL |
| Abstract |
The paper proposes the design of a 50kW isolated DC-DC Dual Active Bridge (DAB) converter for a high-power off-board charger for Electric vehicles (EVs) applications. The detailed electro-thermal simulation of the wide band gap (WBG) (i.e., SiC MOSFETs)-based bidirectional DAB is performed to determine the performance of the system in terms of efficiency at high-power operation. A linear model based on system identification has been created to design the control approach accurately. Dual-loop phase shift constant-current (CC) and constant-voltage (CV) control strategy is implemented on the dynamic simulation model at a higher switching frequency to validate the stability of the designed controller. The proposed DAB operates with an acceptable ripple and dual-loop voltage-current control that comprehensively tracks reference commands, while the maximum efficiency achieved is approximately 97.5\% at rated power. |
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| Filename: | 0290-epe2022-full-09523196.pdf |
| Filesize: | 2.65 MB |
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| Type |
Members Only |
| Date |
Last modified 2023-09-24 by System |
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