Design Optimization and Control System of a 3-Phase T-Type Active Front End for Bi-Directional Charging Technologies for Electric Vehicles.
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| Title: | Design Optimization and Control System of a 3-Phase T-Type Active Front End for Bi-Directional Charging Technologies for Electric Vehicles. |
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| Authors: | Polat, Hakan1,2 (AUTHOR), Geury, Thomas1,2 (AUTHOR), El Baghdadi, Mohamed1,2 (AUTHOR), Hegazy, Omar1,2 (AUTHOR) omar.hegazy@vub.be |
| Source: | Energies (19961073). Feb2026, Vol. 19 Issue 3, p656. 25p. |
| Subject Terms: | *Genetic algorithms, *Power electronics, *Electrical load, *Wide gap semiconductors, *Electric vehicles, *Supervisory control systems, *Mathematical optimization |
| Abstract: | Most electric vehicles use 400 V batteries, while some companies are moving to 800 V to reduce current in electric drives. More cars are expected to adopt 800 V at the DC terminals of the batteries, but 400 V will remain common for the duration of this transition, so future off-board chargers must support a wide voltage output range. Silicon carbide switches are used to keep the power–electronics interface compact and scalable. The AC/DC stage of a modular silicon carbide-based interface is designed using a T-type active front end and a dual active bridge. The T-type front end is optimized with a genetic algorithm. The resulting model is used to tune the inner current and outer voltage controllers. Bode analysis shows an inner current loop bandwidth of 4.25 kHz with a phase margin of 53 ° and a gain margin of 30 dB. The outer voltage loop reaches 50 Hz with a phase margin of 108 ° and a gain margin of 33 dB. The controller is implemented on a dSPACE MicroLabBox. Tests show peak efficiency of 98.5% in G2V mode and 98.3% V2G mode. THD stays under 5% above 4 kW and reaches 3% at peak power. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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| Abstract: | Most electric vehicles use 400 V batteries, while some companies are moving to 800 V to reduce current in electric drives. More cars are expected to adopt 800 V at the DC terminals of the batteries, but 400 V will remain common for the duration of this transition, so future off-board chargers must support a wide voltage output range. Silicon carbide switches are used to keep the power–electronics interface compact and scalable. The AC/DC stage of a modular silicon carbide-based interface is designed using a T-type active front end and a dual active bridge. The T-type front end is optimized with a genetic algorithm. The resulting model is used to tune the inner current and outer voltage controllers. Bode analysis shows an inner current loop bandwidth of 4.25 kHz with a phase margin of 53 ° and a gain margin of 30 dB. The outer voltage loop reaches 50 Hz with a phase margin of 108 ° and a gain margin of 33 dB. The controller is implemented on a dSPACE MicroLabBox. Tests show peak efficiency of 98.5% in G2V mode and 98.3% V2G mode. THD stays under 5% above 4 kW and reaches 3% at peak power. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 19961073 |
| DOI: | 10.3390/en19030656 |
