Prądy łożyskowe w układach napędowych z falownikami PWM

• Autorzy: Kempski A. , Smoleński R.

Warianty tytułu

EN

Bearing currents in PWM inverter-fed drives

• Konferencja: Problemy eksploatacji maszyn i napędów elektrycznych (2006; Ustroń, Polska)
• Języki publikacji: PL

Abstrakty

EN

The application of high switching techniques improves the economic and technical parameters of induction motor drives. However, it has been discovered recently an adverse effect on a bearing assembly which is caused by destructive bearing currents EDM (Electrical Discharge Machining). Since the introduction of the IGBT technology there has been a documented increase in electrically induced bearing failures and shortening electrical life of bearings. In the paper it has been presented the statistical approach related to the distributions of EDM currents in drives with different filter configurations. Commonly used solutions for CM currents reducing are the line reactors and CM chokes. However, they increase risk of the appearance of EDM currents of higher amplitudes in shorter awaiting times. The CM transformer is a good choice for a simultaneous decreasing of the CM current and the risk of EDM currents. However, the best method of an elimination of bearing currents is a cancellation of its source - common mode voltage - at the output of the inverter. In a paper it has been presented so-called sinusoidal filter that assures nearly zero common voltage at the filter output, strongly damps common and differential EMI and eliminate bearing currents.

Słowa kluczowe

PL

prąd łożyskowy; układ napędowy; falownik PWM; silniki elektryczne

• Wydawca: Sieć Badawcza Łukasiewicz - Górnośląski Instytut Technologiczny
• Czasopismo: Maszyny Elektryczne : zeszyty problemowe
• Rocznik: 2006
• Tom: Nr 74
• Strony: 75--80
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Kempski A.

autor

Smoleński R.

• Uniwersytet Zielonogórski, Zielona Góra

Bibliografia

• [1]. Macdonald D., Gray W.: PWM drive related bearing failures, IEEE Industry Appl. Magazine, July/August, 1999 s. 41-47.
• [2]. von Jouanne A., Zhang H., Wallace A. K.: An Evaluation Techniques for Bearing Currents, EMI and Overvoltages in ASD Application, IEEE Trans, on Ind. Appl., vol. 34, No. 2, September/October 1997 s.1113-1121.
• [3]. Kempski A., Smolenski R., Strzelecki R.: Common mode current paths and their modeling in PWM inverter-fed drives, IEEE 33rd - PESC'02, Cairns, 2002. s. 1551—1556.
• [4]. Kempski A., Strzelecki R., Smolenski R., Fedyczak Z.: Bearing current path and pulse rate in PWM-inverter-fed induction motor, 32nd PESC'01 Vol 4, Vancouver, Canada, 2001, s. 2025-2030.
• [5]. Kempski A., Smolenski R., Bojarski J.: Statistical model of electrostatics discharge hazard in bearings of induction motor fed by inverter, Journal of Electrostatics 2005, Vol. 63, s. 475-480.
• [6]. Akagi H., Hasegawa H., Doumoto T.: Design and performance of a passive EMI filter for use with a voltage-source PWM inverter having sinusoidal output voltage and zero common-mode voltage, IEEE 33rd - PESC'02, Cairns, 2002.
• [7]. Kempski A., Smolenski R., Kot E., Fedyczak Z.: Active and passive series compensation of common mode voltage in adjustable speed drive system, IAS'04, Industry Applications Conference, Seattle, September 2004.
• [8]. Kempski A., Smolenski R., Kot E., Strzelecki R.: Series passive compensation of common mode voltage in multilevel inverter drives, PESC'05. Recife, CD-ROM - ISBN: 0-7803-9034-2.