EPE Association: EPE 2023 - LS4e: Converter Design and Optimisation

EPE 2023 - LS4e: Converter Design and Optimisation
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2023 ECCE Europe - Conference > EPE 2023 - Topic 03: Measurement and Control > EPE 2023 - LS4e: Converter Design and Optimisation

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   Design Consideration and Demonstration of Dual-Active Bridge Converter Using 13-kV SiC-MOSFETs Packaged in TO-268
By Yonghyun CHO, Cheng HUANG, Tomoyuki MANNEN, Takanori ISOBE [View]
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Abstract: This paper discusses the feasibility of power electronic converters using high voltage SiC-MOSFETs with a TO-package for medium voltage applications. Characteristics of a 13-kV SiC-MOSFET packaged in TO-268 are reported. Design of dual active bridge (DAB) converters with the devices is discussed and experimental demonstrations are reported.

   Efficiency Enhancement of a Dual Active Bridge Converter by Utilizing Complete Zero Voltage Switching
By Morteza MAHDAVIFARD, S. Ali KHAJEHODDIN [View]
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Abstract: Studies may associate Zero-Current-Switching (ZCS) in a Dual-Active-Bridge (DAB) converter with negligible losses and employ ZCS in the modulation. However, this paper shows ZCS incurs significant losses and proposes a modulation to realize complete Zero-Voltage-Switching (ZVS). Additionally, practical considerations to ensure complete ZVS are investigated. The results are validated experimentally and the efficiency is improved up to 5\\% at the low power operation of the DAB converter.

   Hybrid Modulation for Balancing Thermal Dissipation in Dual Active Bridge Converters
By Liu BOCHEN, Pooya DAVARI, Frede BLAABJERG [View]
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Abstract: High thermal stress on the power semiconductor device is one of the main causes of the power electronics converter failures. Due to an imperfect design of the hardware circuit in practice and parameter variations in volume production, the problem of unbalanced thermal stress often appears on the power semiconductor devices. For addressing this issue, active thermal control is usually utilized to reduce the thermal loading of the most stressed power semiconductor device and thus improve the converter reliability. In dual active bridge (DAB) converters, the most often utilized modulation method is phase-shift PWM control. On this basis, it is possible to mitigate the thermalloading of the most stressed device by rerouting the current flowing path. In this letter, a hybrid modulation method is presented by combining the conventional extended-phase-shift (EPS) modulation and the proposed modified EPS modulation. A 1.5 kW converter prototype is established and comparative experimental results are shown to validate the effectiveness of the hybrid modulation to do thermal management.

EPE 2023 - LS4e: Converter Design and Optimisation
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2023 ECCE Europe - Conference > EPE 2023 - Topic 03: Measurement and Control > EPE 2023 - LS4e: Converter Design and Optimisation
	[return to parent folder]

	Design Consideration and Demonstration of Dual-Active Bridge Converter Using 13-kV SiC-MOSFETs Packaged in TO-268 By Yonghyun CHO, Cheng HUANG, Tomoyuki MANNEN, Takanori ISOBE	[View] [Download]
Abstract: This paper discusses the feasibility of power electronic converters using high voltage SiC-MOSFETs with a TO-package for medium voltage applications. Characteristics of a 13-kV SiC-MOSFET packaged in TO-268 are reported. Design of dual active bridge (DAB) converters with the devices is discussed and experimental demonstrations are reported.

	Efficiency Enhancement of a Dual Active Bridge Converter by Utilizing Complete Zero Voltage Switching By Morteza MAHDAVIFARD, S. Ali KHAJEHODDIN	[View] [Download]
Abstract: Studies may associate Zero-Current-Switching (ZCS) in a Dual-Active-Bridge (DAB) converter with negligible losses and employ ZCS in the modulation. However, this paper shows ZCS incurs significant losses and proposes a modulation to realize complete Zero-Voltage-Switching (ZVS). Additionally, practical considerations to ensure complete ZVS are investigated. The results are validated experimentally and the efficiency is improved up to 5\\% at the low power operation of the DAB converter.

	Hybrid Modulation for Balancing Thermal Dissipation in Dual Active Bridge Converters By Liu BOCHEN, Pooya DAVARI, Frede BLAABJERG	[View] [Download]
Abstract: High thermal stress on the power semiconductor device is one of the main causes of the power electronics converter failures. Due to an imperfect design of the hardware circuit in practice and parameter variations in volume production, the problem of unbalanced thermal stress often appears on the power semiconductor devices. For addressing this issue, active thermal control is usually utilized to reduce the thermal loading of the most stressed power semiconductor device and thus improve the converter reliability. In dual active bridge (DAB) converters, the most often utilized modulation method is phase-shift PWM control. On this basis, it is possible to mitigate the thermalloading of the most stressed device by rerouting the current flowing path. In this letter, a hybrid modulation method is presented by combining the conventional extended-phase-shift (EPS) modulation and the proposed modified EPS modulation. A 1.5 kW converter prototype is established and comparative experimental results are shown to validate the effectiveness of the hybrid modulation to do thermal management.