| EPE 2023 - DS2l: On-Board Power Converters, WBG Technology as well as On-Board DC-Voltage Networks | ||
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 | Analysis of Fault-Tolerant and Fully Redundant HV/LV DC-DC Converters for Battery Electric Vehicles
By Aswathy MARANGATTU PRINCE, Ayman AYAD | |
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Abstract: This paper presents a comprehensive study on fault-tolerant and redundant HV/LV DC-DC LLC converter designs for Autonomous Drives (AD) L4/L5 EVs, medical applications, and aircraft. The main goal is to ensure high reliability and safety through a fail-operational mechanism. These designs address safety requirements for consistent LV power supply in essential EV functions like power steering, braking, acceleration, airbag activation, and controller power supply. The fail-operational LLC topologies support a 1.8kW, 400V system with an input voltage range of 290V to 490V, providing reliable 12V LV supply. Extensive PLECS analysis demonstrates significant advancements in safety and reliability, promising improved performance for AD L4/L5 EVs.
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| | High Bandwith PWM-based Amplifier for Non-Linear Hybrid Filter in Electric Vehicle DC Grids
By Sebastian RAAB, Martin HOFMANN, Ansgar ACKVA, Henning KASTEN | |
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Abstract: The paper presents design and modulation strategy for a high bandwidth PWM-based amplifier. It consists of multiple H-bridges connected in parallel and switched sequentially. As the effective switching frequency is a multiple of the switching frequency of each single switch, the bandwidth is scaled by the number of H-bridges in parallel. The prototype presented supports a maximum number of eight H-bridges in parallel.
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| | High efficiency low voltage isolated DC-DC converter based on GaN devices for aircraft application
By Sebastien CARCOUET, Jacques ECRABEY | |
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Abstract: This paper presents an optimization of a GaN devices based low voltage isolated DC-DC converter for aircraft application. A topology comparison and an implementation through a prototype showed the pertinence of LLC topology with GaN HEMTs on the primary bridge and synchronous rectification with Si Mosfets on the secondary rectifier.
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| | Model Predictive Control of a Double Input Bidirectional Boost DC-DC Converter
By Alessandro BENEVIERI, Andrea FORMENTINI, Mario MARCHESONI, Massimiliano PASSALACQUA, Luis VACCARO | |
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Abstract: This paper presents a new model predictive control strategy for a boost dc-dc converter with two input sources and one output. The converter has three controllable switches and is designed for high efficiency in low and high load conditions. The proposed MPC strategy defines target values for controlled currents and applies the appropriate duty cycles to reach them. Its effectiveness is demonstrated by simulation results in a Matlab/Simulink environment.
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| | The Influence of Asymmetric Printed-Circuit-Board Layout on the Reliability of Power Electronic Circuits
By Max Valentin MÜLLER, Pascal SCHIRMER, Peter SCHREIVOGEL, Marcelo Lobo HELDWEIN | |
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Abstract: Within the development of automotive power electronics often spatial requirements lead to asymmetric design of Printed-Circuit-Boards (PCBs). These asymmetries can lead to thermal coupling and in the following to asymmetric thermal loading limiting the reliability of the semiconductor components. This article aims to examine the influence of these asymmetries on the lifetime of a power converter qualitatively and quantitatively through a mission-profile-based electrical and thermal simulation and damage calculation.
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