Title :
A new approach to enhance power quality for medium voltage drives
Author :
Hammond, Peter W.
Author_Institution :
Robicon Corp., New Kensington, PA, USA
Abstract :
A new approach to medium voltage, variable frequency, static AC motor drives offers improvements in power quality. Harmonic current injection into power lines is below the most severe requirements of IEEE 519-1992. The power factor of this new type of drive exceeds 94% at full load and is above 90% at 10% load. Motor voltage and current waveforms are improved so that torque pulsations are reduced. Peak voltage stress on motor insulation does not exceed peak input line voltage, and no zero sequence voltage is imposed. Drive efficiency exceeds 96%. This paper describes the new approach, and some of the results achieved
Keywords :
AC motor drives; PWM power convertors; harmonic distortion; machine insulation; power supply quality; power system harmonics; AC motor drives; current waveforms; efficiency; harmonic current injection; motor insulation; peak input line voltage; peak voltage stress; power lines; power quality enhancement; torque pulsations; voltage waveforms; Capacitors; Circuit topology; Diodes; Harmonic distortion; Medium voltage; Power quality; Power system harmonics; Power transformer insulation; Pulse width modulation; Rectifiers;
Conference_Titel :
Petroleum and Chemical Industry Conference, 1995. Record of Conference Papers., Industry Applications Society 42nd Annual
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-2909-0
DOI :
10.1109/PCICON.1995.523958
