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This paper proposes a dual current-slope rotor position estimation and its relative sensorless closed-loop drive system for synchronous reluctance motors. First, the mathematical model of the synchronous reluctance motor is discussed. Then, a new rotor position/speed estimator of the synchronous reluctance motor is proposed. The proposed method uses dual current-slope to estimate the rotor position...
Artificial intelligence (AI) and Biologically-inspired techniques, particularly the neural networks, are recently having significant impact on power electronics and electric drives. Neural networks have created a new and advancing frontier in power electronics, which is already a complex and multidisciplinary technology that is going through dynamic evolution in the recent years. But recently, a new...
An efficient and reliable operation of the Switched Reluctance Motor (SRM) can be achieved only by proper estimation of the rotor position. The rotor position information in switched reluctance motor (SRM) drives is essential for generating the proper firing sequence and for controlling the speed of the drive. Also SRM drives in recent days are more expensive than their conventional AC and DC drives...
According to the special requirements of electric forklift, a six-phase 12/10 pole switched reluctance motor drive system is proposed based on DSP and μC/OS-II. In this paper, the design details of the controller is described and in order to solve the nonlinear problem of switched reluctance motor, a fuzzy neural network PI control algorithm is used to achieve the motor speed control loop and digital...
This paper investigates the problem of the position control in switched reluctance motor drives. Advanced proportional-integral (PI) and proportional-differential (PD) controllers for the speed and position control, respectively, are adopted. The parameters of the controllers are on-line fine tuned according to the load torque and rotor speed, for providing high dynamic performance and precise position...
The paper introduces the components of the double switched reluctance motors drive system. There are two controllers, such as the main controller and the subroutine motor. The main controller is for the closed-loop rotor speed control of the main motor, in which sliding mode control algorithm is adopted. The subroutine controller is for the closed-loop rotor speed control of the subroutine motor,...
This paper presents a novel position and velocity estimation technique in four-phase switched reluctance drives based on high frequency signal injection methods. To estimate rotor position and velocity, an identical high frequency carrier voltage signal is superimposed on the main phase voltages and injected into the machine. As a result, the phase currents are composed of both main excitation currents...
In this paper, a modern intelligent control based on computational model of mammalian limbic system and emotional processes (BELBIC) is presented for speed control of switched reluctance motor with attention to torque ripple reduction. In this work, a novel and simple model of SRM drives control plant is achieved by using the intelligent control system, which controls motor speed accurately and directly,...
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...
This paper presents a fuzzy adaptive control scheme for automatic control of excitation angles in switched-reluctance motor (SRM) drives. A turn-on and turn-off angles play important roles in developing electromagnetic torque in SRM. The value of excitation angles are usually variable and depend upon the motor speed and other parameters of the inverter that excites the SRM. As the motor speed increases...
This paper presents an experimental direct driving system with in-wheel switched reluctance motor (SRM) for electrical vehicle (EV). The integrated EV direct driving system includes three main parts: the SRM model, driving circuit and control unit. The proposed 8/6 SRM is a novel motor with high performance; the specified external rotor type fits the requirement of in-wheel EV for saving space. The...
Synchronous, motor drives are fast becoming an attractive alternative to DC, and induction motor drives, especially in the low speed, high power range. Different types, of control schemes, have been suggested for variable speed AC drives, fed from static power source. Among them, field oriented control employing vector control, strategies has become quite popular in recent near, A disadvantage of...
This paper has proposed an electric locomotive in coal mine drawn by the parallel drive system of the switched reluctance dual motors. The principles of the Switched Reluctance motor drive operated at four quadrants with the fixed conducting angles PWM control strategy, the scheme of the symmetrical traction at I-quadrant and at Ill-quadrant, and the scheme of the symmetrical regenerative braking...
This study presents a control scheme to continuously estimate the rotor position and speed of sensorless switched reluctance motor (SRM) drives. The estimation model is based on the two-dimensional (2D) least squares technique. For the proposed estimation scheme, only the rotor position to the optimal sensing phase being the active phase via measuring the current and the voltage is estimated. Furthermore,...
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