DocumentCode
2808276
Title
Application of multi-function motor protection relays to variable frequency drive connected motors
Author
Ernst, Tom
Author_Institution
IEEE GE Digital Energy, Cookeville, TN, USA
fYear
2015
fDate
26-30 April 2015
Firstpage
1
Lastpage
8
Abstract
This paper reviews the application of multi-function motor protection relays to motors that are connected by variable frequency drives (VFD). Typical VFD internal motor protection functions are reviewed to understand the required roles of external motor protection relays. Applications discussed include protection requirements when the relay is located on the source side of the VFD and the motor side of the VFD. The impact of using a bypass switch around the VFD on protection requirements is also discussed.
Keywords
motor drives; motor protection; relay protection; variable speed drives; VFD internal motor protection functions; bypass switch; external motor protection relays; multifunction motor protection relays; variable frequency drive connected motors; Delays; Harmonic analysis; Harmonic distortion; Relays; Stators; Transient analysis; Motor Protection; Variable Frequency Drives;
fLanguage
English
Publisher
ieee
Conference_Titel
Cement Industry Conference (IAS/PCA CIC), 2015 IEEE-IAS/PCA
Conference_Location
Toronto, ON
Print_ISBN
978-1-4799-5578-7
Type
conf
DOI
10.1109/CITCON.2015.7122600
Filename
7122600
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