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Testing Electric Vehicle Sub-Systems Using Low Cost Programmable Electronic Load
ISSN: 0148-7191, e-ISSN: 2688-3627
Published November 21, 2019 by SAE International in United States
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Event: NuGen Summit
The advancements in Electric Vehicles have introduced many complex sub-systems with demanding and sporadic power needs. For example, the current consumed by electric motor or bank of super-capacitors involve transients making them non-linear loads. Conventional test systems for load analysis mainly involved resistive loads where the rate of rise or fall of current was linear, falling short to accommodate the dynamic behavior of the Electric Vehicle loads. In this paper, we have proposed a low cost; yet effective electronic load that is independent of the battery voltage and can sink the current in any prescribed pattern with respect to time. The simulation results have shown the effectiveness of the hardware with respect to changes in temperature, aging and sudden input fluctuations. The implemented electronic load is interfaced to a desktop application to program the dynamic load behavior and the test duration. The same interface can act as data logger for long duration environmental and longevity tests. The indigenous system has proven quite useful for design validation tests and during End-of-Line testing of systems like DC-DC convertors and Battery chargers.
CitationGambhir, A. and Doctor, N., "Testing Electric Vehicle Sub-Systems Using Low Cost Programmable Electronic Load," SAE Technical Paper 2019-28-2492, 2019, https://doi.org/10.4271/2019-28-2492.
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