Title :
PWM drive overvoltage trips in electrochemical plants
Author :
Buddingh, Paul ; Mars, Jack St
Author_Institution :
ANDRITZ Autom. Ltd., Richmond, BC, Canada
Abstract :
Case study application paper for a recurring problem the authors have recently experienced in electrochemical plants using low voltage PWM ASD´s. Low voltage ASD´s are tripping on 1.3 per unit voltage switching transients lasting 1-3 cycles. The ubiquitous ASD has been so successful that it is now used on critical plant processes that cannot tolerate outages. Most power system components are built to operate with a significant level of transient voltage resilience. This does not appear be the case for some of the low voltage ASD´s in use today. This paper examines this issue and provides a specifying methodology for new ASD´s, field proven cost effective corrective measures for installed ASD´s, and a case study.
Keywords :
PWM rectifiers; overvoltage; switching transients; ASD; PWM; electrochemical plants; overvoltage trip; switching transients; transient voltage resilience; Harmonic filters; Inductors; Power systems; Transient analysis; Variable speed drives; Voltage control; ASD; PWM; VFD; capacitor bank; harmonic filter; overvoltage trip; switching transient; transient voltage;
Conference_Titel :
Petroleum and Chemical Industry Conference (PCIC), 2011 Record of Conference Papers Industry Applications Society 58th Annual IEEE
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-61284-299-8
DOI :
10.1109/PCICon.2011.6085866