Equipment Sensitivity Study During Power Quality Event

Mohd Idzwan, Mokhtar (2005) Equipment Sensitivity Study During Power Quality Event. Project Report. UTeM, Melaka, Malaysia. (Submitted)

	PDF (24 Pages) Equipment_Sensitivity_Study_During_Power_Quality_Event_Mohd_Idzwan_b_Mokhtar.pdf24_pages.pdf - Submitted Version Download (1MB)
	PDF (Full Text) Equipment_Sensitivity_Study_During_Power_Quality_Event_Mohd_Idzwan_b_Mokhtar.pdf - Submitted Version Restricted to Registered users only Download (4MB)

Abstract

Power quality waveform events such as voltage sags, swells, transients, flickers, harmonics and others, may cause sensitive loads trip or mis-operation of the specific power quality event on the equipment. In general, the more sophisticated equipment is the more sensitive it is to variations in power quality. The control system of the drive has a great impact on the behavior of the drive during the sag and after recovery. The trip point settings of many drives can by field-adjusted and greatly improve many nuisance trips resulting from minor voltage sags. AC motor drive among the most power electronics- base industrial equipment, and have 3 stages topology; diode rectifier, de link or bus (filtering) and PWM inverter. The AC drive have some energy storage in the DC link capacitor and most use passive diodes on the 'the front end'. The ac drive can be made somewhat tolerant to voltage sags, but most drive is rather sensitive. Voltage depressions caused by faults on the system affect the performance of induction motors, in terms of the production of both transient currents and transient torques. It is often desirable to minimize the effect of the voltage sags on both the induction motor and more importantly on the process where the motor is used.

Actions (login required)

View Item