Journal of Electrical Engineering and Technology

  • 제13권6호
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  • Pages.2335-2343
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  • 2018
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  • 1975-0102(pISSN)
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  • 2093-7423(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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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)
  • 투고 : 2018.05.23
  • 심사 : 2018.08.22
  • 발행 : 2018.11.01
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초록

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.

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참고문헌

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