Electric Near Field Emission From a 1Mhz Power Converter For Electric Vehicles
Authors:
- 10 October 2021
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 2881-2887
Abstract
Recent years have witnessed evolutions of topologies and applications in electric vehicles. Many international standards such as CISPR 25 are designed to protect on-board devices from disturbances caused by radiated emissions arising in a vehicle. This paper investigates the radiated EMI (RE) caused by a buck-boost power converter in the 150kHz to 30MHz frequency range. Based on the developed emission noise model, the switching noise voltage is applied across the inductor, and it is identified as the main emission noise source. The lumped charge model is proposed to analyze the E field in the space due to a coil and the impact of dielectric medium is investigated using electrostatic theory. Experiments for near electric field emission measurement and RE measurement are conducted to identify the noise source and the analysis is verified in simulation.Keywords
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