scholarly journals Adaptive soft starter for a three‐phase induction‐motor driving device using a multifunctional series compensator

2019 ◽  
Vol 13 (7) ◽  
pp. 977-983
Author(s):  
Fei Jiang ◽  
Chunming Tu ◽  
Qi Guo ◽  
Zhengyu Wu ◽  
Yinyi Li
Keyword(s):  
Induction Motor ◽  
Soft Starter ◽  
Three Phase

scholarly journals Design of Three-Phase Induction Motor Starting Drive Based on Electromagnetic Torque Analysis

2021 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Denny Irawan ◽  
Pressa Perdana SS ◽  
Danial Palupessy
Keyword(s):  
Induction Motor ◽  
Power Grid ◽  
Electromagnetic Torque ◽  
Drive Frequency ◽  
Voltage Drops ◽  
Soft Starter ◽  
Thyristor Control ◽  
Three Phase ◽  
Torque Analysis

The process of starting a three-phase induction motor consumes a very largecurrent from the power grid, which can cause voltage drops and damage the coilinsulators due to the heat generated. However, this has been overcome by using severalstarting methods including star-delta starter, starter with autotransformer, soft starter,and drive frequency or better known as VFD or VSD. In conventional soft starters, asmall reduction in voltage results in a sizable drop in electromagnetic torque. This cancause a motor with a certain load to fail to start. In this research, a three-phase inductionmotor soft starter modeling will be carried out using the method of setting the sourcevoltage and frequency, designed to overcome the low electromagnetic torque generatedby conventional soft starters. The modeling of the soft starter with thyristor control isexpected to produce high and stable electromagnetic torque. So that the soft starter withthyristor control can be a solution for conventional soft starters.

Advance Protection for Three Phase Induction Motor using Microcontroller Atmega32

2018 ◽  
Vol 8 (1) ◽  
pp. 172
Author(s):  
Karan S Belsare ◽  
Gajanan D Patil
Keyword(s):  
Induction Motor ◽  
Low Cost ◽  
Short Circuit ◽  
Cost Factor ◽  
Protection Scheme ◽  
Three Phase ◽  
The Cost

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.

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