Modified rotor-side converter control design for improving the LVRT capability of a DFIG-based WECS

Ali, Muhammad Arif Sharafat; Mehmood, Khawaja Khalid; Baloch, Shazia; Kim, Chul‐Hwan

doi:10.1016/j.epsr.2020.106403

Cited by 45 publications

(34 citation statements)

References 33 publications

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“…The model is summarized in the block diagram of Figure 15 [54]. According to the rotor voltage equations, the rotor currents Idr and Iqr are controlled by the rotor voltages Vdr and Vqr, respectively.…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Improved hardware implementation of a TSR based MPPT algorithm for a low cost connected wind turbine emulator under unbalanced wind speeds

Zouheyr

Baghli

Boumédiène

2021

Energy

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Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Improved hardware implementation of a TSR based MPPT algorithm for a low cost connected wind turbine emulator under unbalanced wind speeds

Zouheyr

Baghli

Boumédiène

2021

Energy

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“…With the installation of a 60. 4 GW system in the wind industry, 2019 was a remarkable year as it was the second-biggest year in history. Moreover, the new installation introduced global cumulative wind power (WP) capacity up to 651 GW and represented year-over-year (YoY) growth of 19%.…”

Section: Introductionmentioning

confidence: 99%

“…Low voltage ride-through (LVRT) is one of the vital grid code requirements for the transient analysis [3]. However, as per the LVRT criteria, WF must not only stay connected with the grid but also provide reactive power to maintain grid voltage throughout faults [4].…”

Section: Introductionmentioning

confidence: 99%

LVRT and Stability Enhancement of Grid-Tied Wind Farm Using DFIG-Based Wind Turbine

Akanto

Hazari

2021

ASI

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According to the grid code specifications, low voltage ride-through (LVRT) is one of the key factors for grid-tied wind farms (WFs). Since fixed-speed wind turbines with squirrel cage induction generators (FSWT-SCIGs) require an adequate quantity of reactive power throughout the transient period, conventional WF consisting of SCIG do not typically have LVRT capabilities that may cause instability in the power system. However, variable-speed wind turbines with doubly fed induction generators (VSWT-DFIGs) have an adequate amount of LVRT enhancement competency, and the active and reactive power transmitted to the grid can also be controlled. Moreover, DFIG is quite expensive because of its partial rating (AC/DC/AC) converter than SCIG. Accordingly, combined installation of both WFs could be an effective solution. Hence, this paper illustrated a new rotor-side converter (RSC) control scheme, which played a significant role in ensuring the LVRT aptitude for a wide range of hybrid WF consisting of both FSWT-SCIGs and VSWT-DFIGs. What is more, the proposed RSC controller of DFIG was configured to deliver an ample quantity of reactive power to the SCIG during the fault state to make the overall system stable. Simulation analyses were performed for both proposed and traditional controllers of RSC of the DFIG in the PSCAD/EMTDC environment to observe the proposed controller response. Overall, the presented control scheme could guarantee the LVRT aptitude of large-scale SCIG.

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“…These latter may lead to high transient over-currents in the rotor circuit and over-voltage in the DC link capacitor [3]. This problem can either be mitigated using software [4][5][6] or hardware [7][8][9][10][11][12][13][14][15][16][17][18][19][20] approaches. The software-type solutions are based on modifications of the DFIG converters, especially the rotor side converter (RSC).…”

Section: Introductionmentioning

confidence: 99%

“…Though hardware schemes such as static synchronous compensators (STATCOM), dynamic voltage restorers (DVR), unified interphase power controllers (UIPC) and energy storage systems (ESS) are reliable interfaces that can fulfil the FRT requirements of WFs; they require high capacity and accordingly high-cost power converters, thus making these solutions costly and impractical. Among the hardware schemes, FCLs were found to be effective FRT protection schemes [3,4]. Various FCL technologies have been proposed and developed in the literature to mitigate fault currents.…”

Section: Introductionmentioning

confidence: 99%

A Dynamic Multi-Cell FCL to Improve the Fault Ride through Capability of DFIG-Based Wind Farms

et al. 2020

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Endowing wind farms (WFs) with fault ride through (FRT) capability is crucial to their continuous availability under various operating conditions. This paper proposes a dynamic adaptive multi-cell fault current limiter (MCFCL) topology to enhance the FRT capability of grid connected WFs. The proposed MCFCL consists of one transient cell (TC) and multi resistive cells (RCs) directly connected to the grid’s high voltage without using any series injection transformers nor any series connection of semiconductor switches. The transient cell of the MCFCL includes two transient limiting reactors (TLRs) to mitigate the transient fault current and limit the rate of change of the currents of the semiconductor switches during fault occurrence. The number of RCs in the MCFCL is determined based on voltage sag level. These latter are inserted in the fault path to provide an adaptive voltage sag compensation mechanism according to the voltage sag level. Assessment of the MCFCL under various sag conditions, showed that the MCFCL is able to effectively compensate for a wide range of voltage sags without any over voltage at the WF’s terminal. Comparison analysis with the conventional single-cell bridge-type FCL (SBFCL) showed the superior performance of the proposed MCFCL.

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Modified rotor-side converter control design for improving the LVRT capability of a DFIG-based WECS

Cited by 45 publications

References 33 publications

Improved hardware implementation of a TSR based MPPT algorithm for a low cost connected wind turbine emulator under unbalanced wind speeds

Improved hardware implementation of a TSR based MPPT algorithm for a low cost connected wind turbine emulator under unbalanced wind speeds

LVRT and Stability Enhancement of Grid-Tied Wind Farm Using DFIG-Based Wind Turbine

A Dynamic Multi-Cell FCL to Improve the Fault Ride through Capability of DFIG-Based Wind Farms

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