The influence of the voltage unbalance and voltage variations on operation characteristics of an electrical drive with an induction motor

• Autorzy: Orság P. , Kocman S.
• Języki publikacji: EN

Abstrakty

EN

Induction motors are the most widespread types of electrical motors in electrical drives. Their main advantages include high reliability, simple construction and corresponding nearly maintenance-free, and the possibility to feed them from the common AC power network. To control their speed, frequency converters are widely used in structures of adjustable speed drives. This paper deals with the influence of voltage unbalance and voltage variations in the supply network on operation characteristics of a tested adjustable speed drive with an induction motor and a frequency converter. Supply voltage parameters were adjusted using a programmable power source Pacific 3120AMX. Monitored drive parameters were computed from measured signals and depicted in graphs. Calculated parameter dependencies have confirmed an increase in the input current drive distortion and changes in its harmonic spectrum caused by an unbalance of the supply voltage, and only moderate influence of voltage variations on efficiency of drive components and total drive efficiency.

Słowa kluczowe

EN

distortion; efficiency; induction motor; power factor; unbalance

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Prace Naukowe Instytutu Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej. Studia i Materiały
• Rocznik: 2013
• Tom: Vol. 69, nr 33
• Strony: 308--320
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Orság P.

• VŠB-Technical University of Ostrava, FEECS, Dept. of Electrical Engineering, 17. listopadu 15, 70833 Ostrava-Poruba, Czech Republic.

autor

Kocman S.

• VŠB-Technical University of Ostrava, FEECS, Dept. of Electrical Engineering, 17. listopadu 15, 70833 Ostrava-Poruba, Czech Republic.

Bibliografia

• [1]DECNER A., The efficiency of electric drives supplied from frequency converters (PWM) and parasitical effects occurring in induction motors, Energy Efficiency in Motor Driven Systems, Berlin, Springer-Verlag, 2003, 78–85.
• [2]KOCMAN S., EMC u regulovaných pohonů se střídavými motory, Ph.D. thesis, VSB-Technical University of Ostrava, 2004 (in Czech).
• [3]KŮS V., Vliv polovodičových měničů na napájecí soustavu, BEN, 2002 (in Czech).
• [4]VACULÍKOVÁ P., VACULÍK E., AND ET. AL, Elektromagnetická kompatibilita elektrotechnických systémů, Grada, 1998 (in Czech).
• [5]EN 61 000 2-1, Electromagnetic compatibility (EMC) – Part 2-1: Environment – Description of the environment – Electromagnetic environment for low frequency conducted disturbances and signaling in public power supply systems, ČNI, 1993 (in Czech).
• [6]EN 50160, Voltage characteristics of electricity supplied by public distribution systems, ČNI, 2011 (in Czech).
• [7]Pacific AMX Power Source manual, Pacific Power Source, Irvine, USA 2001.
• [8]HBM Torque transducer operating manual, Hottinger Baldwin Messtechnik GmbH, Darmstadt, BRD.
• [9]WEBSTER J.G., Electrical measurement, signal processing, and displays, CRC Press, 2004.