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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...
This paper presents a new scheme for induction motor control. First the feedback sliding mode linearization control is applied to induction motor in order to separate the control of the rotor speed and flux square. Once the two physical outputs reach their reference, the machine control is performed by an H∞ controller. We detail, in this paper, how to design the H∞ controller to guarantee the robust...
A conventional Internal Model Control (IMC) method cannot be applied to solve the contradiction of the output tracking and the load disturbance rejection performance. In order to overcome the shortcomings of it, two degree freedom (2DOF)-IMC is applied to solve the problem, but the normal 2DOF-IMC has a complex structure. This paper presents the modified 2DOF-IMC method that has a simple structure...
The paper presents a control strategy for induction motor supplied by voltage inverter. The induction machine with control strategy should provide, at the constraining requests, response with high performances in electromagnetic torque and speed. Using the Matlab/Simulink software, we test Indirect and direct field oriented control (IFOC, and DFOC). Both of them achieve the goals for dynamic of torque...
Comminuting processes, which provide the required mechanical power for the process cause stochastical loads with high amplitudes in the electromechanical drive train. In the long run, peak loads cause premature material fatigue of the drive components alongside high thermal loads in the asynchronous machine. A new drive train with a novel non-linear speed control was developed based on the operating...
In the paper the dynamical performance and sensitivity to the motor parameter changes of the sensorless induction motor drive with MRAS type speed and flux estimator is demonstrated. The stability analysis of the stator current-based MRASCC estimator of the induction motor is presented. The influence of equivalent circuit parameter changes of the induction motor as well as coefficients of the adaptation...
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