| PREDICTION OF CONDUCTED EMISSION IN A PMSM-DRIVE BRAKING SYSTEM USING A CIRCUIT MODEL COMBINED WITH EM SIMULATION |
Junesang Lee1, 2
, Jungrae Ha1, Minho Kim1, Sangwon Yun1, Yeongsik Kim1, Wansoo Nah2 |
1MANDO Corp.
2Sungkyunkwan University |
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| ABSTRACT |
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In this paper, a model for a prediction of conducted emission from vehicular PMSM-drive braking system is
presented. The proposed model is based on the high-frequency circuit model combined with EM simulation. The parameter
for high-frequency circuit modeling is derived from the measurement as well as 3D EM simulation based on FEM. To
establish meaningful high-frequency parameters, the lumped parameters concerning the three-phase motor coil, motor busbar,
heatsink, LISN, harness wire, meshed strap wire, and the passive-EMI filters including parasitics are either electromagnetically
simulated or directly measured through an impedance analyzer. The distributed parameters of the PCB’s, connector, and motor
housing are calculated via the 3D EM simulation. Eventually, the presented high-frequency parameters were integrated with
PWM inverter circuit for the system-level analysis, and the model was verified through the correlation between the
measurement and simulation with the EMI filters installed in the system. Moreover, the EMI characteristics with/without
particular noise propagation path were analyzed in the model. The calculated conducted emission of the proposed model
showed a very good agreement with the experimental data, which proves the validness of the proposed model. |
| Key Words:
Conducted emission, PMSM-drive braking system, Parameter extraction, High-frequency circuit model, EM
simulation |
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Corresponding Author.
Wansoo Nah , Email. 
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