Ride-through of PMSG Wind Power System Under the Distorted and Unbalanced Grid Voltage Dips

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Sim, Jun-Bo;Kim, Ki-Cheol;Son, Rak-Won;Oh, Joong-Ki

  • 투고 : 2011.09.03
  • 심사 : 2012.08.20
  • 발행 : 2012.11.01

초록

This paper presents a ride-through skill of PMSG wind turbine system under the distorted and unbalanced grid voltage dips. When voltage dips occur in the grid, pitch control and generator speed control as well as a parallel resistor of DC-link help to keep the turbine's safety. Modern grid code requires a wind turbine to supply reactive currents to help voltage recovery after grid faults clearance. In order to supply reactive currents to the grid in case of the distortedly unbalanced grid voltage dips, a special PLL is needed to control the grid side converter and to regulate the grid voltages symmetrically. The proposed method is applied to 2MW multi-pole PMSG wind turbine system, and verified by simulation.

키워드

Low voltage ride-through;PMSG wind turbine;Distorted grid voltage;Unbalanced grid voltage;PLL

참고문헌

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피인용 문헌

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  3. 3. Optimum design of proportional-integral controllers in grid-integrated PMSG-based wind energy conversion system vol.26, pp.5, 2016, doi:10.5370/JEET.2012.7.6.898
  4. 4. Coordinated control strategy for hybrid wind farms with DFIG-based and PMSG-based wind farms during network unbalance vol.105, 2017, doi:10.5370/JEET.2012.7.6.898
  5. 5. Design of DC Side Voltage and Compensation Analysis of THD for Shunt Power Quality Controller under System Load of Rectifier with R-L Load vol.10, pp.1, 2015, doi:10.5370/JEET.2012.7.6.898