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Active damping of torsional vibrations due to the sub-harmonic instability on a synchronous generator

Peyghami, S ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. Publisher: Institute of Electrical and Electronics Engineers Inc , 2018
  3. Abstract:
  4. Sub-harmonic stability issues due to the interaction between a load-commutated motor drive and a synchronous turbo-generator train in a Liquefied Natural Gas (LNG) station are studied in this paper. The sub-harmonic current injected by motor drives may excite the mechanical torsional modes of turbogenerator train. In this paper, the electro-mechanical interaction phenomenon is investigated and an active damper is proposed to absorb the sub-harmonic currents of motor drives and increase the damping of the electro-mechanical system. Simulations and experiments validate the instability problem and effectiveness of the proposed solution. © 2018 EPE Association
  5. Keywords:
  6. Active damping ; Active filter ; Interharmonics ; Microgrid ; Synchronous machine ; Active filters ; Damping ; Electric drives ; Electric motors ; Harmonic analysis ; Liquefied natural gas ; Mechanical drives ; Power electronics ; Synchronous generators ; Turbogenerators ; Active damping ; Electromechanical systems ; Instability problems ; Inter-harmonics ; Liquefied Natural Gas (LNG) ; Micro grid ; Torsional vibration ; Vibrations (mechanical)
  7. Source: 20th European Conference on Power Electronics and Applications, EPE 2018 ECCE Europe, 17 September 2018 through 21 September 2018 ; 2018 ; 9789075815283 (ISBN)
  8. URL: http://vbn.aau.dk/files/289752555/PID5428535.pdf