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Analysis of Soft Start-up Characteristics of the Induction Motor Considering the Firing Angle
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 Title & Authors
Analysis of Soft Start-up Characteristics of the Induction Motor Considering the Firing Angle
Kim, Jong-Gyeum; Park, Young-Jeen;
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 Abstract
Induction motors are used widely in driving load of a fluid, such as a pump or a fan in the industry. Induction motor has been generated the voltage drop by the occurrence of a high current during startup. In addition, high start-up current can act as a mechanical stress on the shaft of the motor. So there is need a way to reduce the starting current. Soft start method is one of the many ways to reduce the starting current. This method uses silicon-controlled rectifiers(SCRs) for varying value of the voltage applied to the motor. There is a case for fixing or changing the thyristor firing angle to adjust the magnitude of the voltage. Starting power factor of induction motor is very low compared to the normal operation. Soft starting with the firing angle fixed needs to be considered a low power factor at startup. In this study, we compared the direct start characteristics and soft start characteristics considering the low power factor at the time of start-up. It was possible to confirm that the starting current and the voltage drop is present differently according to the firing angle.
 Keywords
Direct starting;Induction motor;Starting current;Soft starting;Voltage drop;
 Language
Korean
 Cited by
 References
1.
Jong-Gyeum Kim, "Characteristics for Current and Power of Induction Motor by Load Variation", KIIEE, Vol. 25, No. 8, pp. 82-87, 2011. 06

2.
Jong-Gyeum Kim and Young-Jeen Park, "A Characteristic Study on the Power Factor Application for Induction Motor", KIIEE, Vol. 22, No. 9, pp. 25-31, 2008. 09

3.
Theodore WildI, "Electrical Machines, Drives and Power Systems", Prentice Hall, 2002

4.
Jong-Gyeum Kim, "Comparison Analysis of Induction Motor using the Equivalent Circuit", KIEE, Vol. 63P, No. 1, pp. 7-11, 2014. 03

5.
Minho Park, Induction Machines, Dongmyungsa, pp.315, 1990

6.
Frank M. Bruce et al., "Reduced-Voltage Starting of Squirrel-Cage Induction Motors", IEEE Trans on IA, Vol.20, No.1, pp.46-55, Jan/Feb, 1984

7.
Jong-Gyeum Kim, "Analysis for the Inrush Current and Voltage Drop of Induction Generator by the Reactor Tap Change", KIEE, Vol. 64, No. 8, pp. 1202-1206, 2015. 08

8.
Gurkan Zenginobuz, et al., "Performance Optimization of Induction Motors During Voltage Controlled Soft Starting", IEEE Trans on EC, Vol. 19, pp. 278-288, 2004, Jun

9.
Jong-Gyeum Kim, "Characteristic Comparison Analysis for Standard and High-Efficiency Induction Motor", KIEE, Vol. 56P, No. 4, pp. 186-190, 2007. 12

10.
Gurkan Zenginobus, Isik Cardici, Muammer Ermis, Cuneyt Barlak, "Soft Starting of Large Induction Motors at Constant Current With Minimized Starting Torque Pulsations", IEEE Trans on IA, Vol. 37, No. 5, Sep/Oct 2001.

11.
H.W. Dommel, "Electromagnetic Transients Program. Reference Manual (EMTP Theory Book)", BPA 1986.