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This paper presents the idea of using the Switched Reluctance Motor (SRM) as an alternative to previously used drives, in wide good and other industrial applications. In order to show the advantage of the SRM, the speed control of a switched reluctance motor (SRM) is designed by blending two artificial intelligence techniques, genetic algorithms and fuzzy PI control. Here the Genetic Algorithm (GA)...
In this paper, a novel torque ripple minimization method, namely, sliding mode variable structure is proposed for switched reluctance motor (SRM). The total reference torque is calculated by the speed error via the sliding mode variable structure controller, and the expected phase torque will be got through the Torque Sharing Function. Then make margin calculations between the expected phase torque...
A non-linear mathematical model of switched reluctance motor is established, Based on the analysis of the relationship between ??-I-?? curve of motor, A new type of indirect rotor position estimation method using fuzzy inference rules is designed. The paper adopted MATLAB6.1 as a simulation tool, used for the simulation of fuzzy inference rules of rotor position angle, The simulation result shows...
This paper describes a new position sensorless control method of 3-phase SRM based on the complex plane expression of phase inductance. The rotor position is simply obtained without magnetic characteristics of the motor and additional hardware. In this method, assuming the phase inductance waveform to be sine wave, the rotor position is obtained by computing the angle of the space vector of inductance...
In this paper, an advanced torque control scheme of SRM (switched reluctance motor) using modified non-linear logical TSF (torque sharing function) based on the DITC (direct instantaneous torque control) with PWM (pulse width modulation) is presented. The proposed torque controller uses the non-linear logical TSF and switching rules which realized by DITC, however the switching period is calculated...
This paper presents a fuzzy logic controller (FLC) based on variable structure control (VSC) with sliding mode concept is used to control the speed of switched reluctance motor (SRM) drives. Since, the VSC has several attractive advantages such as high speed response, good transient performance, insensitivity to variation system parameters and external disturbances, simplicity of realization and robustness...
Vibration is a serious problem in switched reluctance motors (SRMs) for its unbalanced radial force distribution on the rotor during the rotation. The paper analyzes the principle of radial force generation with radial force winding short-circuited in bearingless switched reluctance motors (BSRMs). The short-circuited radial force winding can be operated as a damping winding. A short-circuited control...
A severe nonlinearity of hydraulic pump system with switched reluctance motor (SRM) drive makes it hard to get a good control performance with a conventional PID controller. A novel instantaneous pressure control is presented in this paper. The proposed hydraulic pump system embeds instantaneous pressure controller and advanced current controller. Fuzzy logic based adaptive PID control strategy is...
The electrical motion drives are more and more used in various industrial processes. The choice of the motor drive is based on power, speed, precision, and cost requirements. There are many different types of motors for motion drives application. AC and DC motors feature brushed or brushless designs are suitable for a variety of industrial applications. Speed, torque and position control are the most...
The strongly nonlinear magnetic characteristic of switched reluctance motors (SRMs) makes their torque control a challenging task. In contrast to standard current-based control schemes, we use model predictive control (MPC) and directly manipulate the switches of the dc-link power converter. At each sampling time a constrained finite-time optimal control problem based on a discrete-time nonlinear...
A four-phase 8/6 pole and 75 kW switched reluctance motor drive based on 32-bit digital signal processor TMS320F2812 is designed. The details of the controller design and analysis are discussed. In addition, aiming at solving the nonlinear problems of the switched reluctance motor, fuzzy-PI hybrid algorithm is presented to control the motor speed and the phase current. Experimental results show that...
Developments of high speed motor drive have been described. A switched reluctance motor has been designed for 2 kW output at a rotational speed of more than 100,000 r/min. A test machine has been constructed based on the design. The iron parts are fabricated by 6.5% silicon steel, i.e., low iron loss material. The rotational speed of 150,000 r/min is reported experimentally. Fast and accurate controller...
The purpose of this paper is to compare two different techniques to adjust the reference torque in a speed control loop for variable speed control of switched reluctance machine. The first technique is "instantaneous", i.e., the torque is instantaneously regulated to fit the reference by modulating the current profile with respect to rotor position using the electromagnetic torque characteristics...
This paper presents a fuzzy sliding mode controller used for switched reluctance motor speed regulation. Based on the technique of variable structure control (VSC) with sliding mode, we can construct the controller that possesses the merits of both fuzzy controller and variable structure controller. It is called a "fuzzy sliding mode controller" (FSMC). It provides a simple way to solve...
A novel sensorless control for switched reluctance motor (SRM) driven by the three-phase full-bridge inverter is proposed. The most commonly used drive for SRM is the asymmetric half-bridge inverter but its main disadvantage is the cost due to the number of switches and diodes required to realized the drive, in comparison with the much cheaper and more widely available three-phase full-bridge inverter...
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