Title :
Motors-when running in tune with harmonics
Author_Institution :
Simons (H.A.) Ltd., Vancouver, BC, Canada
Abstract :
Where motors are connected in parallel with power factor correction capacitors, the effective capacitance as seen from the power supply circuit will vary depending on the connected and running motor load. As a result, `lumped´ capacitor banks connected to LV and MV power distribution centres and motor control centres may form a series resonance circuit with the connected area distribution transformer. This paper identifies, and illustrates with practical examples, how resonant conditions and associated voltage distortion may be created. Also the importance of developing an accurate model for the transformer damping resistance for use in harmonic analysis is demonstrated
Keywords :
circuit resonance; distribution networks; electric motors; load (electric); power capacitors; power factor correction; power system harmonics; power system stability; power transformers; LV; MV; distribution transformer; harmonic analysis; load; lumped capacitor banks; model; motors; parallel connection; power distribution; power factor correction capacitors; resonant conditions; series resonance circuit; stability; transformer damping resistance; voltage distortion; Capacitance; Damping; Harmonic analysis; Motor drives; Power capacitors; Power distribution; Power factor correction; Power supplies; RLC circuits; Resonance;
Conference_Titel :
Industry Applications Society Annual Meeting, 1994., Conference Record of the 1994 IEEE
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-1993-1
DOI :
10.1109/IAS.1994.377754
