Direct Power Control of DFIG using Super-Twisting Algorithm based on Second-Order Sliding Mode Control
- Resource Type
- Conference
- Authors
- Shah, Ankit P.; Mehta, A. J.
- Source
- 2016 14th International Workshop on Variable Structure Systems (VSS) Variable Structure Systems (VSS), 2016 14th International Workshop on. :136-141 Jun, 2016
- Subject
- Components, Circuits, Devices and Systems
Power, Energy and Industry Applications
Robotics and Control Systems
Signal Processing and Analysis
Rotors
Wind turbines
Stators
Reactive power
Generators
Aerodynamics
Table lookup
direct power control (DPC)
doubly-fed induction generator (DFIG)
sliding mode control (SMC)
super-twisting algorithm (STA)
- Language
- ISSN
- 2158-3986
This paper presents a Direct Power Control (DPC) scheme for regulating stator active and reactive power for grid-connected Doubly-Fed Induction Generator (DFIG) using Second-Order Sliding Mode (SOSM) control. The proposed controller is derived using Super-Twisting Algorithm (STA) which needs the information of sliding surface only. Such strategy successfully deals with the presence of model uncertainties, external perturbations acting on the system and nonlinear behavior of the system. Besides, the proposed control scheme is simple in implementation as it does not require current control loops and coordinate transformation. Simulation results of proposed controller, Look-Up Table (LUT) DPC and First-Order Sliding Mode (FOSM) DPC scheme are compared for various step changes in active/reactive power. The impact of machine parameter variations on system performance is investigated during simultaneous changes in rotor speed and active/reactive power. Additionally, results of maximum power point (MPP) tracking performance of the proposed controller are also presented during changes in wind speed.