The share of wind power with respect to total installed power capacity is increasing worldwide. The doubly fed induction … Expand. E Marquette University, Wind energy plays an increasingly important role in the world … Expand.
View 1 excerpt, cites methods. Modeling, simulation and control of wind turbine driven doubly-fed induction generator with matrix converter on the rotor side.
In this paper, a wind energy conversion system, which consists of a variable speed wind turbine with doubly-fed induction generator DFIG fed by a matrix converter is considered. The stator of the … Expand. View 3 excerpts, cites background. View 1 excerpt, cites background. In this paper, we present the steady state analysis of a double-fed induction generator DFIG adopted for wind power generation.
The three-phase induction machine connected to the network, to work … Expand. The paper describes the design of a doubly fed induction generator DFIG , using back-to-back PWM voltage-source converters in the rotor circuit. A vector-control scheme for the supply-side PWM … Expand. The global electrical energy consumption is rising and there is a sudden increase in the demand of power generation.
Large number of renewable energy units is now being integrated to power system for … Expand. Modelling and simulation of a grid connected doubly fed induction generator for wind energy conversion system. The Doubly Fed Induction Generator DFIG based wind turbine with variable speed variable-pitch control scheme is the most popular wind power generator in the wind power industry.
This machine can be … Expand. Detailed and well documented models of the wind turbines equipped with the so called Low Voltage Ride-Through capability should therefore be developed to ensure accurate conclusions regarding the behavior of the wind turbine during grid faults.
Both synchronous and induction generators are being used with each concept having pos and cons depending on the issues being investigated. One of the most often used variable speed configurations is the pitch controlled wind turbine equipped with doubly fed induction generator. The DFIG concept has been described in many publications [1]-[3]. However, the wind turbine equipped with DFIG appears to have very special features that need thorough investigation.
The sensitivity of the power converters towards high currents following voltage dips require detailed modeling of the Low Voltage Ride-Through protection system. The system has been modeled and simulated in the Simulink toolbox extension of Mathlab. More Filters. International Journal of Robotics and Control Systems. View 1 excerpt, cites background.
Modeling of the wind turbine with a doubly fed induction generator for grid integration studies. Due to its many advantages such as the improved power quality, high energy efficiency and controllability, etc. View 1 excerpt, references methods. Doubly fed induction generator model for transient stability analysis.
This paper proposes a model of the doubly fed induction generator DFIG suitable for transient stability studies. The main assumption adopted in the model is that the current control loops, which … Expand.
Recently, the growing integration of wind energy into power networks has had a significant impact on power systemstability. Hence a voltage, at slip frequency, Operating the induction machine at super-synchronous speeds is also studied. Neglecting saturation, the d,q machine is investigated theoretically.
It also demonstrates a higher power factor as compared to a conventional induction generator. The variable-frequency supply to the DFIG rotor is Torque equation: attained via the use of two voltage-source converters linked by a capacitor.
The The stator active and reactive powers are: main objective of the stator-side converter is to maintain control of the voltage level on the dc bus capacitor. Double Fed Induction Generator Schematic. Speeds DFIG 3. DFIG Control Scheme The performance of the DFIG at sub-synchronous speeds when varying the magnitude and phase of the To achieve vector control of stator active and reactive voltage applied to the rotor circuit at slip frequency is power, a d-q reference frame synchronized with the stator investigated.
Therefore the d,q Fig. Increasing the magnitude of the rotor voltage machine power in Fig. It is noted that generation Fig. To fairly evaluate the process of power generation at sub- synchronous speed, it is essential to calculate the power consumed by the rotor via applied voltage Vr. This is demonstrated in Fig. Variation of Stator Active Power with Slip for generated stator power. Taking the consumed power factor into consideration is another important factor for evaluating power generation at sub-synchronous speeds.
As speed decreases, the power factor also decreases irrespective of values of Vr. This is the drawback of subsynchronous power generation. However, using power factor correction devices could improve low p.
The converter condition []. The d-q model derived earlier is applied.
0コメント