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2004•Proceedings of the CSEERequires access

PREDICTION OF COMMON MODE CONDUCTED EMI IN PWM INVERTER

Jian Chen

Open publisher page 5 citations

Abstract

In PWM inverter system, the high dv/dt and di/dt due to the fast switching of IGBT could bring serious EMI issues. Based on the study of mechanisms on common mode conducted electromagnetic interference (CM EMI) associated with a single phase PWM inverter, the origin and propagation path of CM EMI noise are highlighted. Compared with buck converter, a simple equivalent circuit is proposed to study the CM EMI. The parameters of passive element are measured by experiment and Fourier transform of the voltage source in equivalent circuit is performed. Frequency domain analysis is used to rapidly obtain the noise spectra in 10KHz-30MHz frequencies. The simulated CM EMI spectra are compared with the actual experiments to verify the validity of the proposed model.

About this research paper

What this paper is about

In PWM inverter system, the high dv/dt and di/dt due to the fast switching of IGBT could bring serious EMI issues. Based on the study of mechanisms on common mode conducted electromagnetic interference (CM EMI) associated with a single phase PWM inverter, the origin and propagation path of CM EMI noise are highlighted. Compared with buck converter, a simple equivalent circuit is proposed to study the CM EMI. The parameters of passive element are measured by experiment and Fourier transform of the voltage source in equivalent circuit is performed. Frequency domain analysis is used to rapidly obtain the noise spectra in 10KHz-30MHz frequencies. The simulated CM EMI spectra are compared with the actual experiments to verify the validity of the proposed model.

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OpenAlex reports 5 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

In PWM inverter system, the high dv/dt and di/dt due to the fast switching of IGBT could bring serious EMI issues. Based on the study of mechanisms on common mode conducted electromagnetic interference (CM EMI) associated with a single phase PWM inverter, the origin and propagation path of CM EMI noise are highlighted. Compared with buck converter, a simple equivalent circuit is proposed to study the CM EMI. The parameters of passive element are measured by experiment and Fourier transform of the voltage source in equivalent circuit is performed. Frequency domain analysis is used to rapidly obtain the noise spectra in 10KHz-30MHz frequencies. The simulated CM EMI spectra are compared with the actual experiments to verify the validity of the proposed model.

Key concepts: EMI, Electromagnetic interference, Common-mode signal, Inverter, Noise (video), Pulse-width modulation, Electronic engineering, Equivalent circuit

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PREDICTION OF COMMON MODE CONDUCTED EMI IN PWM INVERTER — Research Paper | ScholarLens