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http://dx.doi.org/10.7782/JKSR.2017.20.1.43

Performance Analysis of a Five-leg Inverter for the Train Propulsion System  

Lim, Young-Seol (Department of Electrical and Computer Engineering, Ajou University)
Shin, Duck-Ho (Railroad Safety Research Division, Korea Railroad Research Institute)
Lee, June-Seok (Railroad Safety Research Division, Korea Railroad Research Institute)
Lee, Kyo-Beum (Department of Electrical and Computer Engineering, Ajou University)
Publication Information
Journal of the Korean Society for Railway / v.20, no.1, 2017 , pp. 43-54 More about this Journal
Abstract
This paper analyzes the performance of two three-leg inverters and a five-leg inverter and proposes the optimal operation conditions in applying the five-leg inverter for the train propulsion system. The five-leg inverter offers a saving of two switches compared with the standard two three-leg inverters and it is possible to control two three-phase motors independently by using a control board. All of these features lead to a potential reduction in capital cost and miniaturization of system. In this paper, first, the analysis of the existing motor control method and PWM method for two-traction motor drive of urban railway is implemented. Next, the operation principle and performance of five-leg inverter is introduced. Through the analysis, when it applies the same motor control method and the same PWM method for three-leg inverter and five-leg inverter, the characteristic of motor's speed and torque is compared.
Keywords
Three-leg Inverter System; Five-leg Inverter System; Induction Motor; Traction Motor; Propulsion System;
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Times Cited By KSCI : 2  (Citation Analysis)
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