Title :
An improved method for protection of three phase induction motor using microcontroller
Author :
Garg, Gagan ; Sinha, Amrita
Author_Institution :
EIED Thapar Univ., Patiala, India
Abstract :
A low cost and reliable protection scheme has been designed for a three phase induction motor against unbalance voltages, under voltage, over voltage, short circuit and overheating protection. Taking the cost factor into consideration the design has been proposed using microcontroller Atmega32, MOSFETs, relays, small CTs and PTs. However the sensitivity of the protection scheme has been not compromised. The design has been tested online in the laboratory for small motors and the same can be implemented for larger motors by replacing the i-v converters and relays of suitable ratings.
Keywords :
electrical faults; electrical safety; fault diagnosis; induction motor protection; microcontrollers; overvoltage protection; reliability; Atmega32 microcontroller; MOSFET circuit; cost factor; microcontroller based motor protection; overheating protection; overvoltage protection; relay protection; reliable protection protection; short circuit protection; small current transformer; three phase induction motor protection; unbalance voltage protection; under-voltage protection; Circuit faults; Induction motors; MOSFET; Microcontrollers; Power transformer insulation; Relays; Windings; induction motor protection; overcurrent; overvoltage; single phasing; unbalance voltage; undervoltage;
Conference_Titel :
Power, Control and Embedded Systems (ICPCES), 2014 International Conference on
Print_ISBN :
978-1-4799-5910-5
DOI :
10.1109/ICPCES.2014.7062804
