Impact of Phase Locked Loop with Different Types and Control Dynamics on Resonance of DFIG System

Zakiud Din, Jianzhong Zhang, Hussain Bassi, Muhyaddin Rawa and Yipeng Song
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Zakiud Din: School of Electrical Engineering, Southeast University, Nanjing 210096, China
Jianzhong Zhang: School of Electrical Engineering, Southeast University, Nanjing 210096, China
Hussain Bassi: Center of Research Excellence in Renewable Energy and Power Systems, King Abdulaziz University, Jeddah 21589, Saudi Arabia
Muhyaddin Rawa: Center of Research Excellence in Renewable Energy and Power Systems, King Abdulaziz University, Jeddah 21589, Saudi Arabia
Yipeng Song: Department of Energy Technology, Aalborg University, AAU 9220 Aalborg East, Denmark

Energies, 2020, vol. 13, issue 5, 1-26

Abstract: In recent years, the doubly fed induction generator (DFIG) operates in a weak grid, rather than a strong grid due to the high proportion of wind energy into the power grid. The impedance interaction between the DFIG system and series and parallel compensated weak grid might cause the subsynchronous resonance (SSR) and high frequency resonance (HFR) in the DFIG system, respectively. Phase locked loop (PLL) is a popular grid synchronization technique, and the high bandwidth PLL can cause resonance at middle frequencies in the DFIG system. However, the impact of PLL types and their controller dynamics on the resonance in the DFIG system are not adequately researched. The impact of the PLL controller with different types, such as synchronous reference frame (SRF) and Lead/Lag PLL, is studied in this paper to fill this gap. Additionally, an improved PLL is proposed, which can guarantee the high phase margin and decrease the likelihood of the resonance at middle frequencies in the DFIG system under a weak grid. Moreover, the phase margin of the DFIG system impedance with an improved PLL is less sensitive to its controller parameters. Simulation and experimental results verify the effectiveness of the proposed method.

Keywords: doubly fed induction generator; phase locked loop; phase margin; resonance (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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