Numerical Analysis of EV ASD system conducted EMI
Date Issued
2010
Date
2010
Author(s)
Shieh, Li-Chi
Abstract
Adjustable Speed Drive (ASD) system is essential in a variety of electric vehicles. It is different from the traditional gasoline engine vehicles. ASD system is an extra interference of the electric vehicles and the degree of disturbance is also greater than other electronic components. Therefore, it is an important issue to find out how ASD system conducts the intensity of EMI in 150k-30MHz through data simulation at design stage.
In this research, ansoft simplrer system-level circuit software is used for simulating the intensity of EMI by conducting of NTU Green Jumper’s ASD system, which also includes IGBT device dynamic model, IPM motor high frequency model, snubber circuit, power line and bus parastic parameter with coupling. Based on the simulation result, ASD system can successfully conduct EMI in 150k-30MHz and the error could be less than 10dB, which confirmed that EMI modeling method can be accurately used at the design stage, and also be the reference for a filter designing.
In experimental operation, I made the test in S1 wave isolation room at Automotive Research & Testing Center and obtained frequency domain data after checking background’s interference can meet test requirements.
Subjects
electric vehicle
adjustable speed drive system
inverter
AC motor
conducted EMI
IGBT dynamic model
parastic parameter
Type
thesis
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