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In this paper we present a new control strategy of wind turbine, by controlling the pitch angle that must be regulated to capture the maximum of power using PID controller and particle swarm optimization, the problem is to identify the PID controller parameters employing the PSO technique. This study makes a mathematical model, which is used to control the power characteristics of the turbine, a comparison...
This paper presents a performance comparison of feedback linearization and field oriented control for a synchronous reluctance machine. In order to represent realistic drive performance and dynamics, look-up tables of the machine inductances as a function of currents are used to include saturation effect. Additionally, a trained neural network was implemented to take the nonlinear behavior of the...
The induction motor system is dynamically formulated by both the mechanical and electrical equations. In system identification of an induction motor, main objective is to compare parameters between identified by using rotating speed and that by both rotating speed and robust observer. The real-coded genetic algorithm (RGA) is adopted to identify all parameters, and the reduced-order robust observer...
Due to their robustness, low cost, and low maintenance, induction generators are good candidates for wind energy systems. In addition, when the wind turbine is isolated from the grid, the induction generator can operate within a wide speed range which utilize maximum power extraction. To ensure that voltage buildup will take place between the machine terminals, the reactive power required by the machine...
The major problem in permanent Magnet Synchronous Motor (PMSM) drive systems is its nonlinear behavior which arises mainly from motor dynamics and load characteristics. The presence of uncertainties further makes their control an extremely difficult task. So, the speed control strategy should be adaptive and robust for successful industrial applications. The conventional proportional integral derivative...
Systematic LQR tuning is necessary to improve trial-and-error method that is usually used in LQR tuning. This paper presents LQR tuning with SPSA applied on quadrotor control. SPSA is chosen because it is a powerful algorithm for multivariate stochastic optimization and can be easily implemented. Numerical simulation shows that LQR tuning with SPSA can yield good quadrotor control performance. However,...
The ability of a helicopter to carry externally slung loads makes it very versatile for many civil and military operations. For Helicopter slung-load system in the presence of strong disturbances and complex effects from its load, an Active Disturbance Rejection Control method(ADRC) will be applied to helicopter slung-load system and its parameter tuning based on genetic algorithm(GA) will be proposed...
The control of air vehicles is a very challenging task due to the presence of high nonlinearity and coupling between different elements. Twin Rotor MIMO System (TRMS) kit is a prototype of a helicopter designed for conducting laboratory experiments. The most common and simplest technique is to use a PID controller for the design process. Here in this paper we propose a simple design and implementation...
In most industrial zones, electric energy is one of the most important energy sources. Since electrical motors are the main energy consumers of industrial factories, consumption optimization in these motors can be considered as a main option related to energy saving. One very effective way to reduce the consumption of these equipment is to use a motor speed controllers or drives. Since the loss of...
In wind farms, rotor speed control of generator is essential to generate appropriate electric energy. In this study, squirrel cage induction generator (SCIG) is used and its rotor speed is controlled with Genetic Proportional-Integral (GPI) method. Determination of PI coefficients providing SCIG to operate reference rotor speed promptly is obtained with Genetic Algorithm (GA) known as an optimization...
As wind turbines increase their power rating, the size and mass grows as well. The higher reliability is demanded in order to minimize the maintenance. Permanent magnet direct drive (PMDD) synchronous generators are a good solution since they omit the gearbox. While the large generator mass has been also a key difficult problem limiting the practical use of PMDD generator, which makes them difficult...
This paper deals with the multi-objective optimization of a transverse flux machine with claw-pole and flux-concentrating structure (CPTFM), which is especially suitable for low-speed and high-torque applications due to its high pole pair number. Compared with conventional radial flux machine, the main flux path in CPTFM is three dimensional and transverse to the rotation of the rotor. For this reason,...
The present work proposes a methodology to obtain setting parameters of a power system stabilizer (PSS), through the implementation of search technique based on genetic algorithms (GA). To adjust the PSS using GA, the programming and dynamic analysis using Matlab / Simulink is performed, which includes the synchronous machine, excitation system and PSS, where the response of the machine to a disturbance...
This paper studies vector control of induction machine (IM) fed by PWM inverter. Indirect field oriented control is one of the most effective vector control due to the simplicity of design and implementation. The application of this strategy is achieved by using of proportional-integral (PI) controllers. The parameters of these controllers are calculated directly from the machine settings using conventional...
In this paper we present a mathematical model of a quadrocopter, together with a complete supervisor solution for path planning to cover a designated area with a quadrocopter type UAV. The supervisor is also able to optimize and recalibrate its route in the case of unexpected events during flight, such as sudden changes in wind, or someone physically altering its position in the path. Simulations...
Controlling the altitude of flying robots is one of the challenging issues in robotics. In this regard, this paper tries to investigate an adaptive PID controller which can adaptively result proper coefficients for controlling the altitude of flying robot. The structure of this PID controller is similar to Artificial Neuron used in many of artificial neural networks. Control of the robot's altitude...
In this paper, low frequency oscillations in power system under the different operating conditions have been solved through PID based power system stabilizer. The tuning of the parameters of the PSS are considered as optimization problem, and the parameters are tuned using genetic search algorithm. Here forth-order linear and non-linear model of the synchronous machine (model 1.1) which includes both...
In this paper, normalised state vectors are used to demonstrate the state equations of Extended Kalman Filter (EKF) based sensorless Permanent Magnet Synchronous Motor (PMSM) drive. Based on the normalised EKF equations, Simple Genetic Algorithm (SGA) is employed to optimize the noise covariance and weight matrices of EKF parameters, which thereby reduces the parameter adjusting time and ensures stability...
This paper presents a new approach to the sensorless position control of six-phase induction machine (6PIM). A fuzzy-PI (FPI) system has been employed to estimate the rotor position and avoid using mechanical sensor. Also, high-accuracy positioning of a 6PIM rotor can be obtained using such FPI system in model control loops. The input-output scale factors of all FPI systems are tuned using genetic...
In this paper a hybrid control system for a novel small scale coaxial helicopter is presented. Based on a cascade architecture the control system is made up of an inner-loop, for attitude control, and an outer-loop, for trajectory control. The inner-loop consists of three PID controllers for the roll and pitch angles, and altitude control. The outer-loop generates the reference signals for the inner-loop...
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