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This paper presents the speed control scheme of indirect vector controlled induction motor (IM) drive. PWM controlling scheme is based on Voltage source inverter type space vector pulse width modulation (SVPWM) and the Conventional-PI controller or Fuzzy-PI controller is employed in closed loop speed control. Decoupling of the stator current into torque and flux producing (d-q) current components...
This paper presents a closed loop vector control of an interior permanent magnet synchronous motor (IPMSM) drive incorporating two separate fuzzy logic controllers (FLCs). The first one is a Mamdani type FLC which minimizes the developed torque ripple by varying online the hysteresis band of the PWM current controller. The second one is an FLC based tuned proportional-integral (PI) controller where...
The windup phenomenon caused by the current limitation and PWM voltage regulation in the brushless DC motor (BLDCM) double PI loop speed regulating system has been investigated. And the anti-windup controller has been applied to suppress the relevant windup phenomenon. The simulation illustrates that the anti-windup controller make the BLDCM speed regulating less overshoot and quickly dynamic response...
In this paper, three significant control methods for permanent magnet synchronous machine are presented. A new control method enjoys the advantages of vector control and direct torque control is proposed. This method avoids some of the implementation difficulties of either of the two control methods. The proposed control method using the same flux and torque estimators as for the basic DTC and the...
At present, vector control (VC) has been widely used in the interior permanent magnet synchronous motor (IPMSM). However, for the difference between direct and quadrature inductances and the difference of control characteristics between d-q axes current loop PI regulators, the dynamic decoupling can not be achieved, which affects the torque dynamic response and the quick startup of motor. For this...
This paper presents a method for improving the speed profile of a three phase induction motor in direct torque control (DTC) drive system using a proposed fuzzy logic based speed controller. A complete simulation of the conventional DTC and closed-loop for speed control of three phase induction motor was tested using well known Matlab/Simulink software package. The speed control of the induction motor...
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...
In this paper, a new composite control strategy is proposed for permanent magnet synchronous motor (PMSM) drives to achieve fast dynamic response and minimum steady state error. Based on the prior given the scope of the deviation, it implemented the automatical switch between fuzzy control and the PI control, and designed the control system model of permanent magnet synchronous motor. It established...
A novel structure of backstepping control has been proposed for indirect field oriented control of induction motor drive. Voltage and current signals are usually contaminated with high frequency switching noises due to SVPWM inverter. The proposed structure avoids real time integration and its associated drift problems, which in practice are the source of generation of unwanted noise. These problems...
Sensorless field-oriented control of induction motors is widely used in high-performance applications. However, the decoupled control may be detuned due to the motor parameter variation and load torque disturbance. In this paper, a new fuzzy PI self-tuning robust speed controller with feedforward control of an adaptive disturbance observer is proposed for sensorless induction motor drives to ensure...
This paper presents a method for improving the speed control of 3-phase induction motors (IM) using hybrid direct torque controller (DTC)/fuzzy logic controller (FLC) techniques. A complete simulation of the conventional DTC and closed-loop for speed control of a 3-phase IM was tested using SimuLink. The speed control of the IM is done by using the conventional proportional integral (PI) controller...
A predictive control scheme suitable for the torque and flux control of multilevel inverter-fed induction machines is presented in this paper. The control strategy combines the use of a PI controller to obtain a good steady-state behavior and a predictive controller to achieve a fast dynamic torque response. In this way, torque and stator flux references can be reached in the next sample period. With...
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