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This paper presents an elegant technique for mitigating the output power fluctuations from a grid connected Opti-slip induction generator (OSIG), due to sudden wind gusts leading to input drive torque variations. The proposed technique has also been extended to control the amount of real power into the grid at the desired value. The control of OSIG is achieved using the basic principles of chopper...
In this paper, a direct torque control (DTC) of encoderless Synchronous Reluctance Motor (SynRM) drives is proposed based on emotional controller and space vector modulation. The proposed modern controller is called brain emotional learning based intelligent controller (BELBIC). The utilization of BELBIC is based on the emotion processing mechanism in brain, and is essentially an action, which is...
This paper presents the speed control scheme of indirect vector controlled induction motor (EVI) drive. Voltage source inverter type space vector pulse width modulation (SVPWM) is used for PWM controlling scheme. An intelligent based on Fuzzy PI controller is developed for controlling the torque component Iq current of an EVI. The complete vector control scheme of the IM drive incorporating the FLC...
The control system used in air compressor driven by brushless direct current (BLDC) motor was designed in this paper. Based on the analysis of resistance characteristic of air compressor and direct torque control method, a simple open loop control method used to change duty ratio was provided. Simulation and experiment showed that the fluctuation of Rotational speed had been sharply reduced and the...
Bit-Stream based control, which uses one bit wide signals to control power electronics applications, is a new approach for controller design. A Bit-Stream based control system for the Rotor Side Converter (RSC) of a Doubly Fed Induction Generator (DFIG) is proposed to demonstrate that the Bit-Stream control technique is suitable for complex vector control tasks. A new stator flux estimator and reference...
The mathematical model of DC(direct current) motor as the controlled object is established in this paper,and combines the algorithms of the neural network and PID control.With the self-learning function of the neural network,the self-tunings for parameters of PID are realized. This method can overcome disadvantages of PID as parameters which are difficult to determine and the control process which...
The Electric power steering (EPS) is a typical multidisciplinary system. Its development cycle is long, and the development process is complicated. The uncertain change of the road and car driving conditions makes the EPS system strong in the nonlinearity and uncertainty, and the development more difficult. To meet the rapid verification and performance testing for the EPS system, this paper designs...
This paper presents an improved emotional controller for brushless DC motor (BLDC) drive. The proposed controller is called brain emotional learning based intelligent controller (BELBIC). The utilization of the new controller is based on the emotion processing mechanism in brain. This intelligent control is inspired by the limbic system of mammalian brain, especially amygdala. The controller is successfully...
This paper presents an improved performance of a Permanent Magnet Synchronous Motor (PMSM) using a hybrid Fuzzy/ Proportional-Integral (PI) controller. Hybrid control has an advantage of integrating a superiority of two or more control techniques for better control performances. A fuzzy controller offers better speed responses for start-up and large reference input changes (large speed error) as compared...
This paper introduces the main control methods of AC motor. Using traditional slip frequency control method, the PI parameters are hard to be determined, digitization of the current-slip curve is hard to be realized and the maximum torque cannot be obtained. A maximum-torque slip frequency control method is proposed to meet the requirements of mining locomotives. Simulation and experiment shows that...
In this paper, the robust yaw stability control based on active steering control is proposed for electric vehicles (EVs). A two degree of freedom control method by a disturbance observer is applied to control design for yaw stabilization. Moreover, the feed-forward disturbance compensator is designed to compensate unexpected yaw moment caused by torque differences between left and right driving motors...
Interior permanent magnet synchronous motors (IPMSMs) are employed for drive motors of electric and hybrid vehicles. Therefore, the control method in overmodulation range of inverter is important to achieve fast torque response and expand the operating range of IPMSMs. The authors proposed the control method over the full operating range based on perfect tracking control (PTC) with PWM hold model...
A usual wind energy conversion system (WECS) suffers from significant amount of torque ripples even if the wind velocity remains constant. These torque ripples propagate mechanical stress in the turbine-generator drive train and may eventually lead to the failure of its various components. This research paper presents a unified control strategy which yields maximum power from WECS while minimizing...
Multiphase electric drives have been recently proposed for applications where the highest overall system reliability and power distribution per phase are required. The propulsion drive of an Electric Vehicle (EV) is one of these applications. This paper deals with the use of a five-phase induction machine in the propulsion module of EVs, where the viability of a Predictive Torque Control method (PTC)...
This paper presents a new position control method for transverse flux machines. Since the torque ripple is one of the most important reasons for the low dispersal of transverse flux machines, a great importance has to be attached to subordinate torque control. Based on a look-up table, the torque is controlled by a time-discrete converter state changing. Speed and position are superordinately controlled...
In this paper, a nonlinear PI controller is developed to control speed of PMSM, it can adjustment of controller parameters automatically in order to achieve the best control effect in control process. Simulation results show that it was faster than the traditional controller response and have a smaller overshoot.
Hybrid under-actuated control for the autonomous dynamic balance of a running electrical bicycle including frictional torque and motor dynamics is developed, where includes two control inputs: steering and pendulum voltages, and three system outputs: steering, lean and pendulum angles. Due to the under-actuated feature, two novel reference signals using three system outputs are designed so that the...
In order to change noise problems of the existing gearbox loader, a new type of Permanent magnet loader is designed by using water cooling. The control system is realized mainly by using PLC (Programmable Logic Controller) and MCU (Micro Control Unit), and obtaining signals from multi-sensors. Meanwhile, fuzzy parameters self-tuning PID algorithm and automatic location algorithm have been studied,...
The adaptive backstepping nonlinear speed controller of permanent magnet synchronous servo motor (PMSSM) with uncertain parameters is designed in this paper. The inertia, viscous friction coefficient and load torque which are vulnerably affected by external disturbances can be estimated in real time. A second-order filter is adopted to reduce the speed overshoot in the starting course of PMSSM. On...
Generally, because of the temperature rise, the ageing, the saturation, etc. the resistance value and inductance value of the machine windings and the magnetic flux will be changed. The control performance of the permanent magnetic synchronous motors (PMSM) can be influenced by the plant parameter variation and external disturbance. This paper presents a robust H∞ control for PMSM drivers. Firstly,...
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