Paradigm Changes in Power Electronics Caused by Emerging Materials

Sladić, Saša; Santis, Michele De; Zivic, Even; Giemacki, Wojciech

doi:10.1109/amse51862.2022.10036673

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…As EV technology advances, power electronics continue to evolve to improve efficiency, reliability and performance [12]. Research focuses on developing semiconductor materials with improved efficiency, advanced control algorithms and innovative power conversion topologies to enhance the overall efficiency and capabilities of electric vehicles [13][14][15][16][17][18]. Research and development are focused on determining and analyzing dependable and effective power converter topologies [19].…”

Section: Introductionmentioning

confidence: 99%

A Novel Tri-Mode Bidirectional DC–DC Converter for Enhancing Regenerative Braking Efficiency and Speed Control in Electric Vehicles

Dias,

Naik,

Shet

2024

WEVJ

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A bidirectional dc–dc converter is used to match the voltage levels between a low-voltage battery and a high-voltage traction machine in an electric vehicle. Using a conventional bidirectional converter with a standard voltage range, there is a limitation to the fine variation in the electric vehicle speed. During the regenerative braking process, when the speed decreases below a certain value, the generated voltage is insufficient to charge the battery, hence the regenerated energy cannot be stored. This paper proposes a novel bidirectional converter featuring three distinct operational modes: boost, buck and buck-boost. In the normal driving mode, it operates as a boost converter, providing double gain and accommodating a wide voltage range. During regenerative braking, the proposed converter switches to the buck or buck-boost mode based on the control algorithm. This adaptation is intended to either decrease the generated voltage to charge the battery effectively or to raise the voltage if it is insufficient for charging the battery. This configuration provides voltage stress of half the dc link voltage on the switches. This paper provides a comprehensive analysis of the proposed circuit, a detailed description of the control strategy with pulse generation logic for all switches and a mode transition algorithm. The simulation results of a circuit operating at a 1500 W power level are presented and compared with those of a standard bidirectional converter.

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Section: Introductionmentioning

confidence: 99%

A Novel Tri-Mode Bidirectional DC–DC Converter for Enhancing Regenerative Braking Efficiency and Speed Control in Electric Vehicles

Dias,

Naik,

Shet

2024

WEVJ

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“…Faults affecting power capacitors are varied, and most of them are caused by switching semiconductors. Moreover, the kind of material has a great effect on the reliability of capacitors and semiconductors [27]. The detection of power capacitor faults can be associated with artificial intelligence (AI).…”

Section: Introductionmentioning

confidence: 99%

Implementation of a Cascade Fault Tolerant Control and Fault Diagnosis Design for a Modular Power Supply

2023

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The main objective of this research work was to develop reliable and intelligent power sources for the future. To achieve this objective, a modular stand-alone solar energy-based direct current (DC) power supply was designed and implemented. The converter topology used is a two-stage interleaved boost converter, which is monitored in closed loop. The diagnosis method is based on analytic redundancy relations (ARRs) deduced from the bond graph (BG) model, which can be used to detect the failures of power switches, sensors, and discrete components such as the output capacitor. The proposed supervision scheme including a passive fault-tolerant cascade proportional integral sliding mode control (PI-SMC) for the two-stage boost converter connected to a solar panel is suitable for real applications. Most model-based diagnosis approaches for power converters typically deal with open circuit and short circuit faults, but the proposed method offers the advantage of detecting the failures of other vital components. Practical experiments on a newly designed and constructed prototype, along with simulations under PSIM software, confirm the efficiency of the control scheme and the successful recovery of a faulty stage by manual isolation. In future work, the automation of this reconfiguration task could be based on the successful simulation results of the diagnosis method.

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Paradigm Changes in Power Electronics Caused by Emerging Materials

Cited by 2 publications

References 14 publications

A Novel Tri-Mode Bidirectional DC–DC Converter for Enhancing Regenerative Braking Efficiency and Speed Control in Electric Vehicles

A Novel Tri-Mode Bidirectional DC–DC Converter for Enhancing Regenerative Braking Efficiency and Speed Control in Electric Vehicles

Implementation of a Cascade Fault Tolerant Control and Fault Diagnosis Design for a Modular Power Supply

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