전력전자학회논문지 (The Transactions of the Korean Institute of Power Electronics)

  • 제11권1호
  • /
  • Pages.72-78
  • /
  • 2006
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  • 1229-2214(pISSN)
  • /
  • 2288-6281(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
권호 표지

연속적인 운전모드의 전환을 위한 계통연계형 인버터의 간접 전류 제어기법

Indirect Current Control of Utility Interactive Inverter for Seamless Transfer

  • 유태식 (서울산업대 제어계측공학과) ;
  • 배영상 (서울산업대 제어계측공학과) ;
  • 김효성 (공주대 전기전자공학부) ;
  • 최세완 (서울산업대 제어계측공학과)
  • 발행 : 2006.02.01
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초록

분산발전시스템에 비상부하 등의 전용부하가 접속되어 있는 경우, 주전원에 고장이 발생하러라도 비상전용부하에는 지속적인 전력을 공급하기 위하여 의도적인 단독운전을 하게 된다. 기존의 계통연계형 인버터는 주전원에 전력을 주입하기 위하여 평소에 전류제어모드로 운전을 하기 때문에, 의도적인 단독운전 상황이 발생하는 경우 비상부하에 안정된 전압을 공급해 주기 위하여 전압제어모드로 운전을 전환하여야한다. 이러한 운전모드의 전환시 인버터의 출력단 전압에 심각한 과도문제가 발생된다. 본 논문에서는 의도적인 단독운전 발생시 인버터 운전모드 전환에 따른 출력전압의 과도현상을 최소화하기 위한 인버터 토폴로지와 제어알고리즘을 제안한다. 제안된 간접전류제어 알고리즘에 적합한 LCL필터 설계방법과 설계데이터를 제시한다.

Distributed generation (DG) systems go to intentional islanding operation to back up private emergency loads when the main grid is out of electric power. Conventional utility interactive inverters normally operated in current control mode in DG system must change their operation mode into voltage control mode to ensure stable voltage source to the emergency loads when intentional islanding operation occurs. During the transfer between current control mode and voltage control mode, serious transient problem may occur on the output terminal voltage of the utility interactive inverter. This paper proposes reasonal inverter topology and its control algorithm for seamless transfer of DG systems in intentional islanding operation. Filter design guide line and data for a LCL filter that is appropriate for the proposed control algorithm are also presented by the authors.

키워드

참고문헌

  1. J.Stevens, R.Bonn, J.Ginn, S.Gonzalez, G.Kem, Development and Testing of an Approach to Anti-Islanding in Utility-interconnected Photovoltaic Systems, Sandia National Laboratories report SAND2000-1939, Sandia National Laboratories, Albuquerque, NM, August 2000
  2. R.M.Hudson, T.Thome, F.Mekanik, M.R.Behnke, S.Gonzalez, J.Ginn, 'Implementation and Testing of Anti-islanding Algorithm for IEEE 929-2000 Compliance of Single Phase Photovoltaic Inverters,' Records on 29th IEEE Photovoltaic Specialists Conference, pp. 1414-1419, May 2002
  3. C. Jerapurtra, P.N.Enjeti, I.H.Hwang, 'Development of A Robust Anti-Islanding Algorithm for Utility Interconnection of Distributed Fuel Cell Power Generation,' IEEE Transactions on Power Electronics, Vol. 19, No.5, pp.1163-1170, Sept. 2004 https://doi.org/10.1109/TPEL.2004.833439
  4. M.Liserre, F.Blaabjerg, S.Hansen, 'Design and Control of An LCL Filter Based Active Rectifier,' IEEE Transactions on Ind App., Vol. 38, No.2, pp.299-307, Sept/Oct. 2001
  5. T.CY.Wang, Z.Ye, G.Sinha, X.Yuan, 'Output Filter Design for a Grid-interconnected Three-Phase Inverter,' Conference Records on PESC'03, Vol. 2, pp.779-784, June 2003
  6. Hyosung Kim, Seung-Ki Sul, 'The Behavior of Filter Inductor Current on Controlling Filter Capacitor Voltage of Output LC Filters for PWM Inverters,' Conference Records on ICPE 2004-Pusan, CD Rom, October 2004
  7. A. Nabae, H. Nakano, Y. Okamura, 'A novel control strategy of the inverter with sinusoidal voltage and current outputs,' Conference Records on PESC'94, Vol. 1, pp. 154-159, June 1994
  8. M.J. Ryan, W.E. Brumsickle, and R.D. Lorenz, 'Control Topology Options for Single-Phase UPS Inverters,' IEEE Transactions on Industry Applications, Vol.33, No.2, pp.491-501, March/April 1997