Journal ArticleDOI
Direct Power Control of DFIG With Constant Switching Frequency and Improved Transient Performance
Dawei Zhi,Lie Xu +1 more
TLDR
In this article, a new direct power control (DPC) strategy for a doubly fed induction generator (DFIG)-based wind turbine system is proposed, which eliminates active and reactive power errors within each fixed time period.Abstract:
This paper proposes a new direct power control (DPC) strategy for a doubly fed induction generator (DFIG)-based wind turbine system. The required rotor control voltage, which eliminates active and reactive power errors within each fixed time period, is directly calculated based on stator flux, rotor position, and active and reactive powers and their corresponding errors. No extra power or current control loops are required, simplifying the system design, and improving transient performance. Constant converter switching frequency is achieved that eases the design of the power converter and the ac harmonic filter. Rotor voltage limit during transients is investigated, and a scheme is proposed that prioritizes the active and reactive power control such that one remains fully controlled while the error of the other is reduced. The impact of machine parameter variations on system performance is investigated and found negligible. Simulation results for a 2 MW DFIG system demonstrate the effectiveness and robustness of the proposed control strategy during variations of active and reactive power, machine parameters, and wind speedread more
Citations
More filters
Journal ArticleDOI
VSC-Based HVDC Power Transmission Systems: An Overview
TL;DR: An overview of the recent advances in the area of voltage-source converter (VSC) HVdc technology is provided in this paper, where a list of VSC-based HVDC installations worldwide is included.
Journal ArticleDOI
A Hybrid AC/DC Microgrid and Its Coordination Control
TL;DR: A hybrid ac/dc micro grid is proposed to reduce the processes of multiple dc-ac-dc or ac-dc-ac conversions in an individual ac or dc grid to maintain stable operation under the proposed coordination control schemes.
Journal ArticleDOI
High-Power Wind Energy Conversion Systems: State-of-the-Art and Emerging Technologies
TL;DR: The most successful generator-converter configurations are addressed along with few promising topologies available in the literature from the market based survey, and the past, present and future trends in megawatt WECS are reviewed in terms of mechanical and electrical technologies, integration to power systems, and control theory.
Journal ArticleDOI
Overview of Control Systems for the Operation of DFIGs in Wind Energy Applications
TL;DR: The control systems for the operation of DFIGs in wind energy applications are reviewed for connections to balanced or unbalanced grids, and sensorless control.
Journal ArticleDOI
Direct Power Control of an AFE Using Predictive Control
TL;DR: In this paper, a model-based predictive power control for an active front-end rectifier using a discrete-time model is presented. But the main advantages of this method are that there is no need of linear current controllers, coordinates transformations or modulators.
References
More filters
Journal ArticleDOI
A New Quick-Response and High-Efficiency Control Strategy of an Induction Motor
Isao Takahashi,Toshihiko Noguchi +1 more
TL;DR: In this article, the authors proposed a limit cycle control of both flux and torque using optimum PWM output voltage; a switching table is employed for selecting the optimum inverter output voltage vectors so as to attain as fast a torque response, as low an inverter switching frequency, and as low harmonic losses as possible.
Book
Control of Electrical Drives
TL;DR: In this paper, the authors describe the motion of a drive with Lumped Inertia and two Axes Drive in Polar Coordinates, and the integration of the simplified Equation of Motion.
Journal ArticleDOI
Doubly fed induction generator using back-to-back PWM converters and its application to variable-speed wind-energy generation
Ruben Pena,Jon Clare,Greg Asher +2 more
TL;DR: The paper describes the engineering and design of a doubly fed induction generator (DFIG), using back-to-back PWM voltage-source converters in the rotor circuit, which results in independent control of active and reactive power drawn the supply, while ensuring sinusoidal supply currents.
Book
Sensorless vector and direct torque control
TL;DR: This paper presents a space-phasor model of A.C. machines based on artificial intelligence-based steady-state and transient analysis of electrical machines, estimators and investigates the role of magnetic saturation in the control of these machines.
Journal ArticleDOI
Doubly fed induction generator systems for wind turbines
TL;DR: In this paper, the authors show that adjustable speed generators for wind turbines are necessary when output power becomes higher than 1.5 MW, e.g., for off-shore applications.
Related Papers (5)
Direct active and reactive power control of DFIG for wind energy generation
Lie Xu,P. Cartwright +1 more
Doubly fed induction generator using back-to-back PWM converters and its application to variable-speed wind-energy generation
Ruben Pena,Jon Clare,Greg Asher +2 more