A Study on the Firing Angle at the Mode Conversion to Improve the Output Characteristics of the Double Converter for Urban Railway DC Power Supply

도시철도 직류급전용 더블컨버터의 출력특성 향상을 위한 모드 변환 시 점호각 제어 연구

Seo, Seung-Sam;Han, Sung-Woo;Byun, Gi-Sig

  • Received : 2015.07.14
  • Accepted : 2015.12.10
  • Published : 2015.12.31


This paper suggest away to maintain constant power through trolley wire by transferring increased line voltage to the AC main line while changing the mode from Converter(Forward) to Inverter(Reverse) when the line voltage is increased due to regenerative power when the train stops, This paper suggests a Double Converter DC substation that can create regenerative power when the train stops reusable. We also proposed using a simulation tool, the optimal Thyrister firing angle that can minimize the undershoot and overshoot that occurs when transferring the mode from Converter to Inverter for quality improvement of DC voltage in the Double Converter in the DC substation from the Busan Urban Subway.


Double converter;Regenerative power;Urban railway DC substation equipment;Railway technology


  1. E.H. Song, B.H. Kwon (1990) A Current Source using the 12-Pulse Phase -Controlled Rectifier, The Transactions of the Korean Institute of Electrical Engineers, 39(6), 545-556.
  2. D.J. Perreaul, J.G. Kassakian (1995) Effects of firing angle imbalance on 12-Pulse, IEEE Transaction Power Electronics, 10(3), pp 257- 262.
  3. J.G. Kim, J.H. Kim, K.H. Cho, C.Y. Won, et al. (2007) Regenerative inverter system for DC traction substation with voltage drop compensation mode, The Transaction of the Korean Institute of Power Electronics, pp. 213-220.
  4. S.W. Han (2014) Development of algorithm for improving efficiency of dual converter power supply system of city railway, Master Thesis, Donga University.

Cited by

  1. A Studies for Sequential Mode Change Control Algorithm of the Parallel Dual Converter of Using Thyristor for Supplying the Urban Railway DC Power vol.65, pp.3, 2016,
  2. A Study on Control Algorithm of Thyristor Dual Converter System for DC Electricity Supply of Urban Railway vol.14, pp.2, 2019,


Supported by : 국토교통과학기술진흥원