Asymmetric Half-Frequency Modulation in DAB to Optimize the Conduction and Switching Losses in EV Charging Applications

Kazemtarghi, Abed; Dey, Saikat; Mallik, Ayan; Johnson, Nathan G.

doi:10.1109/tte.2023.3234198

Cited by 23 publications

(6 citation statements)

References 28 publications

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“…Switching turn-on and turn-off losses, drain-source voltage, drain-current, turn-on/turn-off delay time of converter is listed, whereas the system overview shows us the device parameters such as switching losses, conduction losses, combined losses and Peak temperature of Primary SiC MOSFET, Secondary SiC MOSFET, and converter losses are listed in Table 5. Lowering 5% of switching and conduction losses when compared to the other devices such as Si-IGBT [15]. Also, total thermal losses were analysed which reached to 7.620 W. Here the junction temperature where reaches up to 25.54 o C which is same as the primary side of DAB.…”

Section: ⸫ (3)mentioning

confidence: 99%

A Comprehensive loss analysis of SiC-based DAB DC-DC converter for electric vehicle application

Kasim

Robert

2023

E3S Web Conf.

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This paper presents loss analysis of SiC MOSFET based bidirectional DAB (Dual Active Bridge) DC-DC converter for EV application. This converter benefits the efficiency of the EV vehicle by reducing power loss and voltage drop across the converter. The DAB uses WBG (Wide-Bandgap) semiconductor devices such as SiC MOSFET to optimize the efficiency and extend soft-switching over whole operating range. The SiC MOSFET switching devices rated at 1200 V with different drain- source on-state resistance Rds(on) of 21 mΩ/32 mΩ is considered. Therefore, a reliable converter rated at 10 kW which works under normal operating condition at high-switching frequency of 100 kHz. The switching and conduction losses are taken under two different junction temperature such as 25 °C and 100 °C with various operating load current between 10 A to 40 A. Based on an analysis of SiC MOSFET based DAB attains 98.8% efficiency. The simulation results are taken as voltage and current waveforms at various points of converter are reported. This SiC based DAB converter would be used in next generation of V2G (Vehicle-to-Grid) and G2V (Grid-to-Vehicle) technology.

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Section: ⸫ (3)mentioning

confidence: 99%

A Comprehensive loss analysis of SiC-based DAB DC-DC converter for electric vehicle application

Kasim

Robert

2023

E3S Web Conf.

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“…Nowadays, electric vehicles are widely used all over the world because of their reduced greenhouse emissions [33]. With an optimal planning of electric vehicles, it is possible to improve the voltage profile and frequency stability of the grid while the power quality of the grid is maintained in the allowed range according to IEEE 519-2014 standard [34][35][36].…”

Section: Electrified Transportation System With Large Penetration Of ...mentioning

confidence: 99%

Computational social science in smart power systems: Reliability, resilience, and restoration

Valinejad

Mili

et al. 2023

Energy Conversion and Econom

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Smart grids are typically modelled as cyber-physical power systems, with limited consideration given to the social aspects. Specifically, traditional power system studies tend to overlook the behaviour of stakeholders, such as end-users. However, the impact of endusers and their behaviour on power system operation and response to disturbances is significant, particularly with respect to demand response and distributed energy resources. Therefore, it is essential to plan and operate smart grids by taking into account both the technical and social aspects, given the crucial role of active and passive end-users, as well as the intermittency of renewable energy sources. In order to optimize system efficiency, reliability, and resilience, it is important to consider the level of cooperation, flexibility, and other social features of various stakeholders, including consumers, prosumers, and microgrids. This article aims to address the gaps and challenges associated with modelling social behaviour in power systems, as well as the human-centred approach for future development and validation of socio-technical power system models. As the cyber-physical-social system of energy emerges as an important topic, it is imperative to adopt a human-centred approach in this domain. Considering the significance of computational social science for power system applications, this article proposes a list of research topics that must be addressed to improve the reliability and resilience of power systems in terms of both operation and planning. Solving these problems could have far-reaching implications for power systems, energy markets, community usage, and energy strategies.

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“…In [24], a full ZVS control is proposed for a single-stage semi-DAB ac-dc converter, in which variable frequency control is implemented to extend ZVS operation. In [25], The primary side works at half the switching frequency of the secondary side using a modulation method denominated in the article as asymmetric half-frequency modulation (AHFM). In [26], the EMI in the DAB converter using variable switching frequency modulation (VSFM) is analyzed, and an improved VSFM is proposed.…”

Section: Introductionmentioning

confidence: 99%

Variable Switching Frequency for ZVS over Wide Voltage Range in Dual Active Bridge

Cárcamo,

Fernandez-Hernandez,

Gonzalez-Hernando

et al. 2024

Electronics

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The Dual Active Bridge (DAB) converter is known for its advantageous characteristics, including bidirectionality, galvanic isolation, and soft-switching operation. However, achieving Zero Voltage Switching (ZVS) across the complete operation range is not guaranteed, particularly through a wide input–output voltage ratio. This paper explores the integration of the switching frequency as a control variable in the DAB converter to ensure ZVS operation across a wide voltage range, employing Single Phase Shift (SPS) modulation. The study evaluated the RMS and reactive currents under variable switching frequency, presenting the advantages of this approach. Moreover, it includes a design-oriented analysis of the ZVS limits and their relationship with the switching frequency, aiming to ensure ZVS at any operating point. Experimental results validated the theoretical analysis, while presenting the main advantages of variable switching frequency implementation.

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Asymmetric Half-Frequency Modulation in DAB to Optimize the Conduction and Switching Losses in EV Charging Applications

Cited by 23 publications

References 28 publications

A Comprehensive loss analysis of SiC-based DAB DC-DC converter for electric vehicle application

A Comprehensive loss analysis of SiC-based DAB DC-DC converter for electric vehicle application

Computational social science in smart power systems: Reliability, resilience, and restoration

Variable Switching Frequency for ZVS over Wide Voltage Range in Dual Active Bridge

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