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This paper presents a new design of hybrid Petri net sliding mode control (PNSMC) applied to reach the maximum power point tracking (MPPT) of a variable speed wind energy conversion system. To solve the main and major undesired phenomenon faced by conventional sliding mode control, the high frequency oscillations known as chattering, the design of a hybrid controller based on Petri network sliding...
This paper focuses to improve wind turbine systems efficiency, in other words, to maximize the output power delivered by the wind turbine. To do this it is necessary to have a good controller. In this study, we use a nonlinear synergetic controller. Synergetic control theory is applied to reach the maximum power point tracking (MPPT) of a variable speed energy conversion system. A comparison with...
Extremum seeking control (ESC) can be utilized as a maximum power point tracking (MPPT) method that optimizes the operating point of a wind energy system by adjusting the wind turbine's rotor speed according to the change in the wind speed. Although ESC has a tracking ability and quick response capability that is better than those of the conventional MPPT methods, it increases the mechanical vibration...
The aim of this paper is to present a maximum power point tracking (MPPT) method for wind power systems. The control algorithm uses Back-stepping Control technique. This control strategy, based on electromagnetic torque, tracks the maximum power for different wind speeds. The control of our system is tested under fault condition by simulation. A few results are presented and discussed to prove simplicity,...
This paper aims to present an algorithm based on artificial neural networks, with Multilayer Perceptron architecture, capable of tracking the maximum power point of a wind turbine system: (i) without the use of any mechanical wind speed sensors and (ii) with less oscillatory steady state. The proposed method it is based on the traditional Perturb & Observe algorithm. However, it uses the neural...
In this paper a variable structure direct torque control based on sliding mode approach, linear PI and space vector modulation (SVM) is proposed for a brushless doubly fed induction generator. The DTC transient merits and robustness are preserved and the steady state behavior is improved by reducing the torque and flux pulsations. The presented method also guarantees maximum power point tracking (MPPT)...
A new method for a variable-speed wind turbine using a permanent-magnet synchronous generator (PMSG) is simulated. The system includes a power conditioner which consists of a diode rectifier powered by a phase shifting transformer and it is then cascaded to a pulse width-modulated (PWM) voltage source inverter. The simple maximum power point tracking (MPPT) control strategy determines the optimal...
The efficiency of the wind power conversion systems can be significantly improved by the judicious choice of the control algorithm. To maximize the power extraction of a Doubly-Fed Induction Generator (DFIG) based wind turbine, we propose a non-linear control algorithm, based on a sliding mode theory. It has been used to control the wind turbine speed so that it reaches the desired value which corresponds...
The aim of this paper is to present the study, the control and the simulation of the wind mill connected to the electrical supply network of strong power at variable speed based on a dual stator induction generator (DSIG). The study of operation of the wind turbine leads us to two essential cases: optimization of the power for wind speeds lower than the nominal speed of the turbine and limitation...
Problem of control associated wind energy conversion systems using horizontal-axis fixed-pitch variable-speed low-power, working in the partial load region, consisting in the energy conversion maximization, is approached here under the assumption that the wind turbine model and its parameters are poorly known. Maximum Power Point Tracking (MPPT) by using an approach derived from the optimum seeking...
This paper presents a quantitative analysis of the advantages of a grid connected doubly fed induction generator (DFIG) for wind energy conversion systems (WECS) over the other available variable speed WECS. The WEC system includes back-to-back connected PWM voltage source converters (VSC) in the rotor circuit of the DFIG. The control strategy implemented is - unity power factor operation of the machine...
In this paper, a novel grid integration system for a variable-speed wind turbine using Interior Permanent Magnet Synchronous Generator (IPMSG) is developed. The power-conditioner system (PCS) consists of a series-type 12-pulse diode rectifier powered by a phase shifting transformer and then cascaded to a PWM voltage source inverter. The series-type 12-pulse diode rectifier of the generator-side converter...
This paper introduces a new control method to track the maximum power point for a Wind Energy Conversion System (WECS). This WECS is based on a permanent magnet synchronous generator (PMSG) fed by a matrix converter. Since the mechanical power generated by the wind turbine is a function of its shaft speed at a given wind velocity, the proposed controller provides the desired voltage at the output...
This paper proposes a new maximum power point tracking (MPPT) algorithm for PMSG (permanent magnet synchronous generator) wind turbine systems, which gives a fast and effective tracking performance. For torque control, the torque reference consists of two parts, in which one is made from the rotor speed and the other comes from the system inertia. The PSIM simulation results for a 2[MW] PMSG wind...
In this paper, a novel grid integration system for a variable-speed wind turbine using Interior Permanent Magnet Synchronous Generator (IPMSG) is developed. The power-conditioning system consists of a series-type 12-pulse diode rectifier powered by a phase shifting transformer and then cascaded to a PWM voltage source inverter. The series-type 12-pulse diode rectifier of the generator-side converter...
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