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

The Korean Institute of Power Electronics (전력전자학회)
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Development of Hardware Simulator for DFIG Wind Power System Composed of Anemometer and Motor-Generator Set

풍속계와 Motor-Generator 세트를 이용한 DFIG 풍력발전시스템 하드웨어 시뮬레이터 개발

  • Received : 2010.09.10
  • Accepted : 2010.10.19
  • Published : 2011.02.20
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Abstract

This paper describe development of a hardware simulator for the DFIG wind power system, which was designed considering wind characteristic, blade characteristic, and blade inertia compensation. The simulator consists of three major parts, such as wind turbine model using induction motor, doubly-fed induction generator, converter-inverter set. and control system. The turbine simulator generates torque and speed signals for a specific wind turbine with respect to the given wind speed which is detected by Anemometer. This torque and speed signals are scaled down to fit the input of 3.5kW DFIG. The MSC operates to track the maximum power point, and the GSC controls the active and reactive power supplied to the grid. The operational feasibility was verified through computer simulations with PSCAD/EMTDC. And the implementation feasibility was confirmed through experimental works with a hardware set-up.

본 연구에서는 풍력발전시스템의 다양한 특성들을 고려한 DFIG풍력발전시스템 하드웨어 시뮬레이터를 개발하였다. 개발한 하드웨어 시뮬레이터는 유도전동기를 이용한 풍력터빈 모델과 이중여자 유도발전기 그리고 컨버터와 인버터로 구성된 Back-to-Back컨버터로 구성되었다. 특히 풍력터빈 시뮬레이터는 풍속계를 이용하여 실시간으로 풍속을 측정하고 측정된 바람으로 블레이드의 특성을 모의하였다. DFIG풍력발전 시뮬레이터에서 생산되는 전력은 MPPT제어를 수행하는 MSC(Machine Side Converter)와 DC link전압을 일정하게 제어하는 GSC(Grid Side Converter)에 의해 계통에 연계되어 운전한다. 제안하는 시스템은 PSCAD/EMTDC 프로그램을 이용하여 시뮬레이션 하였으며, 축소모형실험을 통해서 성능을 검증하였다.

Keywords

References

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