An Optimal Damping Control Algorithm of Direct Two-level Inverter for Miniaturization and Weight Reduction of Auxiliary Power Supply on Railway Vehicle

  • Lee, Chang-hee (Dept. of Electrical Engineering, Hanyang University) ;
  • Lee, Ju (Dept. of Electrical Engineering, Hanyang University)
  • Received : 2018.05.23
  • Accepted : 2018.08.22
  • Published : 2018.11.01


This paper proposes an optimal damping control algorithm of the DTI (Direct Two-level Inverter) to miniaturize and reduce the weight of auxiliary power supply for railway vehicles. The conventional auxiliary power supply for railway vehicles uses a DC-DC converter to maintain the inverter input power from the line voltage smoothly. The proposed topology does not use a DC-DC converter for reducing of manufacturing and maintenance costs. It also proposes a DTI topology removed damping resistors that generate ground signal noise in a certain period. At this time, a resonance phenomenon of DC-link voltage occurs due to variation of the inductive load, and a method of controlling the resonance phenomenon of DC-link voltage is required. In order to suppress the resonance phenomenon of the DC-link voltage, at a point before resonance occurs, this paper introduces an algorithm to suppress the resonance phenomenon of DC-link voltage by compensating the resonance component of the q axis voltage of the synchronous reference frame. The proposed algorithm verifies the effect through simulation and experiment.


Supported by : Korea Agency for Infrastructure Technology Advancement


  1. S. Inarida, K. Nakamura, and Y. Iwaji, "Study on Instantaneous Voltage Control Method for Auxiliary Power Supply System Used in Rolling Stocks," Trans. IEE Japan, vol. 116-D, no. 11, pp. 1132-1139. 1996.
  2. J. S. Kim, st. al., "Instantaneous Voltage Control of Auxiliary Power Supply for Railway Application Using H.G.C and State Feedback," in Conf. Rec. ICEE'98, vol. 2, pp. 538-541, 1998.
  3. H. J. Shin, Y. J. Park, and Y. J. Son, "Reliability Research through Improvement in Locomotive Auxiliary Power Maintenance," J. the Korean Society for railway, pp. 795-807, May. 2012.
  4. K. S. Kim, "A Case Study on Failure during Operation of Line 4 Train Auxiliary Power Supply (SIV)," J. the Korean Society for railway, pp. 241-244, Oct. 2017.
  5. S. S. Lee, D. H. Shin, J. M. Kim, Y. C. Kim, and C. Y. Won, "A Study of 20kVA IGBT SIV development and Production for Electric Coache," in conf. power electronics annual, pp. 309-313, Jul. 1997.
  6. J. S. Kim, J. H. Choi, S. S. Lim, and E. K. Lee, "Instantaneous Voltage Control Scheme of Auxiliary Power Supply System for Electric Railway Vehicles," Trans. Korean institute of power electronics, vol. 5, no. 5, pp. 349-356, Aug. 1999.
  7. O. Deblecker, A. Moretti, and F. Vallee, "Comparative study of soft-switched isolated DC-DC converters for auxiliary railway supply," IEEE Trans. Power Electron., vol. 23, no. 5, pp. 2218-2229, Sep. 2008.
  8. J. Weigel, A. Nagel, and H. Hoffmann, "High voltage IGBTs in medium frequency traction power supply," presented at the 13th European Conf. on Power Electronics and Applications-EPE, Paper 8040, 2009.
  9. I. Quesada, A. Lazaro, C. Martinez, A. Barrado, M. Sanz, C. Fernandez, R. Vazquez, and I. Gonzalez, "Modulation technique for low frequencyharmonic cancellation in auxiliary railway power supplies," IEEE Trans.Ind. Electron., vol. 58, no. 9, pp. 3976-3987, Sep. 2011.
  10. D. C. Yang, J. W. Kim, and Y. B. Lee, "Resonance Characteristic Improvement of Direct Two-Level Auxiliary Power Supply," J. the Korean Society for railway, pp. 1398-1403, Oct. 2012.
  11. S. G. Parker, B. P. McGrath, and D. G. Holmes, "Regions of active damping control for LCL filters," in Proc. IEEE Energy Conver. Congr. Expo., pp. 53-60, 2012.
  12. J. C. Wiseman and B. Wu, "Active damping control of a high-power PWM current-source rectifier for line-current THD reduction," IEEE Trans. Ind. Electron., vol. 52, no. 3, pp. 758-764, Jun. 2005.
  13. N. Choudhary and D. Kaur, "Vibration Damping Materials and Their Applications in Nano/Micro-Electro-Mechanical Systems: A Review," J Nanosci Nanotechno, vol. 15, pp. 1907-1924, 2015.