STUDY OF ELECTROMAGNETIC INTERFERENCE IN INVERTER DRIVEN ASYNCHRONOUS MOTO

Autor/autori: Eng. Ioan TILEA PhD-student, Prof. Eng. Calin MUNTEANU PhD

Rezumat: Interferentele electromagnetice conduse din motoarele asincrone alimentate de invertoare PWM sunt o problema actuala in sistemele de actionare cu turatie variabila. Interferentele electromagnetice conduse din aceste sisteme se datoreaza motorului electric si a cablului de alimentare. Analiza caracteristicii impedantei motorului electric si a cablului de alimentare sunt fundamentale pentru interpretarea emisiilor de mod comun si diferential din sistemele de actionare cu turatie variabila.

Cuvinte cheie: supratensiuni la motor, invertor motor, interferente electromagnetice


Abstract: Conducted electromagnetic interference (EMI) in induction motor fed from pulse width modulation (PWM) inverters is one of the most difficult current technical problems in variable speed system. The conducted EMI emissions in inverter motor system is related to the inverter load which is the induction motor and cable. The analysis of the impedance characteristic of the motor and cable is fundamental for understanding the common and differential mode of emissions.

Keywords: motor overvoltage, inverter-fed motor, electromagnetic interference

 

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