Evaluation of the Performance of BTFCLs for Enhancing LVRT Capability of DFIG

Performance of three kinds of bridge-type fault current limiters (BTFCLs) for enhancing low-voltage-ride-through (LVRT) capability of DFIG is evaluated in this paper. The common BTFCL can effectively enhance the LVRT capability of DFIG. However, the fault-current-limiting inductor (FCLI) is periodically inserted into the stator circuit under normal operation for compensating power losses of the FCLI. The periodically insertion of the FCLI induces stator voltage spikes, which causes significant stator flux and electromagnetic torque oscillations. One feasible way to solve this problem is to use an additional current-regulating circuit (CRC). However, the additional CRC increases hardware cost, reduces reliability of the whole system, and induces more power losses. To solve this problem, a BTFCL with bypass resistor (BTFCL-BR) is presented. The BR absorbs the majority of the current harmonics during normal operation and eliminates the stator voltage spikes. The flux and electromagnetic torque oscillations can thus be significantly reduced. The performance of three kinds of BTFCLs is evaluated by simulation and experimental studies on a typical 1.5 MW wind turbine driven DFIG system and a 2 kW DFIG prototype. By simulation and experimental evaluations, it seems that the BTFCL-BR approach is the most promising solutions among the three kinds of BTFCLs.

[1]  Roberto Cárdenas,et al.  Overview of control systems for the operation of DFIGs in wind energy applications , 2013, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society.

[2]  James L. Kirtley,et al.  Novel Fault Ride-Through Configuration and Transient Management Scheme for Doubly Fed Induction Generator , 2013, IEEE Transactions on Energy Conversion.

[3]  A. Abramovitz,et al.  Survey of Solid-State Fault Current Limiters , 2012, IEEE Transactions on Power Electronics.

[4]  Geng Yang,et al.  LVRT Capability of DFIG-Based WECS Under Asymmetrical Grid Fault Condition , 2013, IEEE Transactions on Industrial Electronics.

[5]  Tae Kuk Ko,et al.  Test of DC reactor type fault current limiter using SMES magnet for optimal design , 2002 .

[6]  S. M. Islam,et al.  Transient Control of DFIG-Based Wind Power Plants in Compliance With the Australian Grid Code , 2012, IEEE Transactions on Power Electronics.

[7]  Yong Kang,et al.  An Improved Low-Voltage Ride-Through Control Strategy of Doubly Fed Induction Generator During Grid Faults , 2011, IEEE Transactions on Power Electronics.

[8]  Kavitha Busi,et al.  Fault Ride-Through of a DFIG Wind Turbine Using a Dynamic Voltage Restorer during Symmetrical and Asymmetrical Grid Faults , 2013 .

[9]  Giri Venkataramanan,et al.  Unbalanced Voltage Sag Ride-Through of a Doubly Fed Induction Generator Wind Turbine With Series Grid-Side Converter , 2009 .

[10]  Humberto Pinheiro,et al.  Robust Controller for DFIGs of Grid-Connected Wind Turbines , 2011, IEEE Transactions on Industrial Electronics.

[11]  Teng Long,et al.  Crowbarless Fault Ride-Through of the Brushless Doubly Fed Induction Generator in a Wind Turbine Under Symmetrical Voltage Dips , 2013, IEEE Transactions on Industrial Electronics.

[12]  Li Ran,et al.  Control of a doubly fed induction generator in a wind turbine during grid fault ride-through , 2006, IEEE Transactions on Energy Conversion.

[13]  Yang Wang,et al.  Grid-fault tolerant operation of DFIG wind turbine generator using a passive resistance network , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[14]  Heng Nian,et al.  Direct Power Control of Doubly Fed Induction Generator Under Distorted Grid Voltage , 2014, IEEE Transactions on Power Electronics.

[15]  D. F. Howard,et al.  Feedforward Transient Compensation Control for DFIG Wind Turbines During Both Balanced and Unbalanced Grid Disturbances , 2013, IEEE Transactions on Industry Applications.

[16]  M Parniani,et al.  Coordinated Control Approaches for Low-Voltage Ride-Through Enhancement in Wind Turbines With Doubly Fed Induction Generators , 2010, IEEE Transactions on Energy Conversion.

[17]  Miguel Castilla,et al.  Control Scheme With Voltage Support Capability for Distributed Generation Inverters Under Voltage Sags , 2013, IEEE Transactions on Power Electronics.

[18]  Dehong Xu,et al.  DC-Voltage Fluctuation Elimination Through a DC-Capacitor Current Control for DFIG Converters Under Unbalanced Grid Voltage Conditions , 2013, IEEE Transactions on Power Electronics.

[19]  Sajjad Tohidi,et al.  Analysis and Enhancement of Low-Voltage Ride-Through Capability of Brushless Doubly Fed Induction Generator , 2013, IEEE Transactions on Industrial Electronics.

[20]  G. Joos,et al.  Supercapacitor Energy Storage for Wind Energy Applications , 2007, IEEE Transactions on Industry Applications.

[21]  Shaotao Dai,et al.  Enhancing Low-Voltage Ride-Through Capability and Smoothing Output Power of DFIG With a Superconducting Fault-Current Limiter–Magnetic Energy Storage System , 2012, IEEE Transactions on Energy Conversion.

[22]  Xiaoqiang Guo,et al.  Asymmetrical Grid Fault Ride-Through Strategy of Three-Phase Grid-Connected Inverter Considering Network Impedance Impact in Low-Voltage Grid , 2014, IEEE Transactions on Power Electronics.

[23]  Gonzalo Abad,et al.  Single-Phase DC Crowbar Topologies for Low Voltage Ride Through Fulfillment of High-Power Doubly Fed Induction Generator-Based Wind Turbines , 2013, IEEE Transactions on Energy Conversion.

[24]  Shaotao Dai,et al.  Control and design of a current source united power quality conditioner with fault current limiting ability , 2013 .

[25]  Geng Yang,et al.  An LVRT Control Strategy Based on Flux Linkage Tracking for DFIG-Based WECS , 2013, IEEE Transactions on Industrial Electronics.

[26]  J. López,et al.  Wind Turbines Based on Doubly Fed Induction Generator Under Asymmetrical Voltage Dips , 2008, IEEE Transactions on Energy Conversion.

[27]  H. Boenig,et al.  Fault current limiter using a superconducting coil , 1982 .

[28]  Po-Tai Cheng,et al.  A Low-Voltage Ride-Through Method With Transformer Flux Compensation Capability of Renewable Power Grid-Side Converters , 2012, IEEE Transactions on Power Electronics.

[29]  Kit Po Wong,et al.  A Comprehensive LVRT Control Strategy for DFIG Wind Turbines With Enhanced Reactive Power Support , 2013, IEEE Transactions on Power Systems.

[30]  David J. Atkinson,et al.  Evaluation of the Performance of a DC-Link Brake Chopper as a DFIG Low-Voltage Fault-Ride-Through Device , 2013, IEEE Transactions on Energy Conversion.

[31]  Kit Po Wong,et al.  Advanced Control Strategy of DFIG Wind Turbines for Power System Fault Ride Through , 2012, IEEE Transactions on Power Systems.

[32]  Bin Wu,et al.  Unified Power Control for PMSG-Based WECS Operating Under Different Grid Conditions , 2011, IEEE Transactions on Energy Conversion.

[33]  J. Morren,et al.  Ridethrough of wind turbines with doubly-fed induction generator during a voltage dip , 2005, IEEE Transactions on Energy Conversion.

[34]  Geng Yang,et al.  Analysis of the control limit for rotor-side converter of doubly fed induction generator-based wind energy conversion system under various voltage dips , 2013 .

[35]  Zhe Chen,et al.  Enhanced Control of a DFIG-Based Wind-Power Generation System With Series Grid-Side Converter Under Unbalanced Grid Voltage Conditions , 2013, IEEE Transactions on Power Electronics.

[36]  Tapan Kumar Saha,et al.  Control Strategies for Augmenting LVRT Capability of DFIGs in Interconnected Power Systems , 2013, IEEE Transactions on Industrial Electronics.

[37]  Shang Gao,et al.  Power angle control of grid-connected doubly fed induction generator wind turbines for fault ride-through , 2013 .

[38]  Peter Tavner,et al.  Control of a doubly fed induction generator in a wind turbine during grid fault ride-through , 2006 .

[39]  Ronald G. Harley,et al.  Short-Circuit Modeling of DFIGs With Uninterrupted Control , 2014, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[40]  Stavros A. Papathanassiou,et al.  A review of grid code technical requirements for wind farms , 2009 .

[41]  Luis Marroyo,et al.  Ride Through of Wind Turbines With Doubly Fed Induction Generator Under Symmetrical Voltage Dips , 2009, IEEE Transactions on Industrial Electronics.

[42]  P. Sanchis,et al.  Dynamic Behavior of the Doubly Fed Induction Generator During Three-Phase Voltage Dips , 2007, IEEE Transactions on Energy Conversion.

[43]  Jin Yang,et al.  A Series-Dynamic-Resistor-Based Converter Protection Scheme for Doubly-Fed Induction Generator During Various Fault Conditions , 2010, IEEE Transactions on Energy Conversion.

[44]  Wilfried Hofmann,et al.  Modeling and Ride-Through Control of Doubly Fed Induction Generators During Symmetrical Voltage Sags , 2011, IEEE Transactions on Energy Conversion.