A Parallel Capacitor Control Strategy for Enhanced FRT Capability of DFIG

Huchel, Lukasz; Moursi, Mohamed Shawky El; Zeineldin, H. H.

doi:10.1109/tste.2014.2371925

Cited by 82 publications

(33 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To operate the active crowbar by a semiconductor switch and cease the RSC switching, a threshold current or a threshold voltage is defined regarding the transient over-current in the rotor side or the over-voltage in the DC link, respectively. Whenever the measured current voltage is less than the threshold current voltage, the DFIG converters resume to normal operation [8]. The RSC stop and the reactive power absorption by the active crowbar are the main disadvantages of this method.…”

Section: Inductive Type Fcl: Non-controlled Fclmentioning

confidence: 99%

“…In the literature, different methods have been studied to enhance the FRT capability of the DFIG [6]. The previous introduced approaches can be classified as crowbar (active and passive) [7,8], DC braking chopper [9], new configurations for the DFIG [10,11], the advanced control techniques in back-to-back voltage source converters [12], and adding new hardware into the DFIG.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Review on Fault Current Limiting Devices to Enhance the Fault Ride-Through Capability of the Doubly-Fed Induction Generator Based Wind Turbine

et al. 2018

View full text Add to dashboard Cite

The doubly-fed induction generator has significant features compared to the fixed speed wind turbine, which has popularised its application in power systems. Due to partial rated back-to-back converters in the doubly-fed induction generator, fault ride-through capability improvement is one of the important subjects in relation to new grid code requirements. To enhance the fault ride-through capability of the doubly-fed induction generator, many studies have been carried out. Fault current limiting devices are one of the techniques utilised to limit the current level and protect the switches, of the back-to-back converter, from over-current damage. In this paper, a review is carried out based on the fault current limiting characteristic of fault current limiting devices, utilised in the doubly-fed induction generator. Accordingly, fault current limiters and series dynamic braking resistors are mainly considered. Operation of all configurations, including their advantages and disadvantages, is explained. Impedance type and the location of the fault current limiting devices are two important factors, which significantly affect the behaviour of the doubly-fed induction generator in the fault condition. These two factors are studied by way of simulation, basically, and their effects on the key parameters of the doubly-fed induction generator are investigated. Finally, future works, in respect to the application of the fault current limiter for the improvement of the fault ride-through of the doubly-fed induction generator, have also been discussed in the conclusion section.

show abstract

Section: Inductive Type Fcl: Non-controlled Fclmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Review on Fault Current Limiting Devices to Enhance the Fault Ride-Through Capability of the Doubly-Fed Induction Generator Based Wind Turbine

et al. 2018

View full text Add to dashboard Cite

show abstract

“…However, the RSC is blocked when crowbar is active. In this circumstance, the DFIG operates as an induction machine and consumes reactive power from the power grid [5] which deepens the voltage sag. A capacitor in series with crowbar circuit is proposed to eliminate the ripples in the rotor circuit and DC-link in [6].…”

Section: Introductionmentioning

confidence: 99%

Improved Rotor Braking Protection Circuit and Self-Adaptive Control for DFIG during Grid Fault

Chen¹,

Yuanhao²,

Zhu³

et al. 2019

Energies

View full text Add to dashboard Cite

This paper introduces an improved rotor braking protection circuit configuration and the corresponding self-adaptive control strategy to enhance the low voltage ride-through (LVRT) capability of the doubly-fed induction generator (DFIG). The proposed protection circuit consists of a crowbar circuit and a series rotor braking resistor array, which guarantees the safe operation of wind generators under the LVRT. Moreover, to adapt the proposed protection and further enhance the performance of the improved configuration, a corresponding self-adaptive control strategy is presented, which regulates the rotor braking resistor and protection exiting time automatically through calculating the rotor current in the fault period. The LVRT capability and transient performance of the DFIG by using the proposed method is tested with simulation. Compared with the conventional crowbar protection or the fixed rotor braking protection, the proposed protection and the control strategy present several advantages, such as retaining the control of the rotor side converter, avoiding repeated operation of the protection and accelerating the damping of stator flux linkage during a grid fault.

show abstract

“…Currently, the doubly fed induction generator (DFIG)-based wind turbines are widely used because of many salient features [2]. The stator of DFIG is usually directly connected to the utility grid and a partially scaled back-to-back connected voltage source converter (VSCs) links the rotor circuit to the power grid.…”

Section: Introductionmentioning

confidence: 99%

Low voltage ride-through enhancement of DFIG-based wind turbine using DC link switchable resistive type fault current limiter

Naderi

Negnevitsky

Jalilian

et al. 2017

International Journal of Electrical Power & Energy Systems

View full text Add to dashboard Cite

, "Low voltage ride-through enhancement of DFIGbased wind turbine using DC link switchable resistive type fault current limiter," International Journal of Electrical Power and Energy Systems, vol. 86, pp. 104-119, 2017. Low voltage ride-through enhancement of DFIG-based wind turbine using DC link switchable resistive type fault current limiter Abstract Doubly-fed induction generator (DFIG)-based wind turbines utilise small-scale voltage sourced converters with a limited overcurrent withstand capability, which makes the DFIG-based wind turbines very vulnerable to grid faults. Often, modern DFIG systems employ a crowbar protection at the rotor circuit to protect the rotor side converter (RSC) during grid faults. This method converts the DFIG to a squirrel cage induction generator, which does not comply with the new grid codes. The recent grid codes need wind turbines to stay connected to the utility grid during and after power system faults, especially in high penetration level of wind power. Furthermore, the crowbar switch is expensive. This paper proposes a novel DC-link switchable resistive-type fault current limiter (SRFCL) to improve the LVRT capability of the DFIG. The proposed SRFCL is employed in the DC side of the RSC. The SRFCL solves crowbar protection activation problems and eliminates subsequent complications in the DFIG system. The proposed SRFCL does not have any significant impact on the overall performance of the DFIG during normal operation. Whenever the fault, whether symmetrical or asymmetrical, occurs, the SRFCL not only limits rotor over-currents but also prevents rotor speed acceleration and restricts high torque oscillations even during zero grid voltage, as recommended by some grid codes. To prove the effective operation of the SRFCL on the RSC fault current limitation, analytical analysis is performed in each switching interval. The proposed approach is compared with the crowbar-based protection method. Simulation studies are carried out in PSCAD/EMTDC software. In addition, a prototype is provided to demonstrate the main concept of the proposed approach. Simulation studies are carried out in PSCAD/EMTDC software. In addition, a prototype is provided to demonstrate the main concept of the proposed approach.

show abstract

A Parallel Capacitor Control Strategy for Enhanced FRT Capability of DFIG

Cited by 82 publications

References 22 publications

A Review on Fault Current Limiting Devices to Enhance the Fault Ride-Through Capability of the Doubly-Fed Induction Generator Based Wind Turbine

A Review on Fault Current Limiting Devices to Enhance the Fault Ride-Through Capability of the Doubly-Fed Induction Generator Based Wind Turbine

Improved Rotor Braking Protection Circuit and Self-Adaptive Control for DFIG during Grid Fault

Low voltage ride-through enhancement of DFIG-based wind turbine using DC link switchable resistive type fault current limiter

Contact Info

Product

Resources

About