Vladimir V. Pankratov

Speed control of sensorless induction motor drive based on model predictive control

In this paper, the model predictive control (MPC) technique for controlling the speed of sensorless induction motor drive is presented. To decrease the cost and increase the reliability and affectivity of the motor drive, a full order observer for speed estimation based on the model reference adaptive system MRAS is used to estimate the rotor speed. The adaptive full-order observer based on IM equation is used to estimate stator currents and rotor flux. Lyapunovs stability criterion is employed to estimate rotor speed based on the error between the actual and estimated currents. The same algorithm deduced from Lyapunovs stability criterion is given to estimate the stator resistance, which results in the speed estimation error. A simple model of induction motor is employed in the MPC structure so as to minimize the computational load. The MPC controller design is taken into account the effect of uncertainty due to motor parameters variation and load disturbance could be reduced. The effectiveness of the proposed scheme has been successfully verified through simulations. The results proved that the induction motor with the MPC speed controller has superior transient response, and good robustness in face of uncertainties including load disturbance. Moreover, accurate tracking performance has been achieved.

Model predictive control of vector controlled induction motor drive

In this paper the application of the model predictive control (MPC) technique for controlling the speed of the induction motor drive has been presented. Vector control principle has been used for decoupling between motor speed and rotor flux. A simple model of induction motor is employed in the MPC structure so as to minimize the computational load. The MPC controller design is taken into account the effect of uncertainty due to motor parameters variation and load disturbance could be reduced. The effectiveness of the proposed scheme has been successfully verified through simulations. The performance of the system including the MPC controller is compared with the corresponding one using the traditional PI controller. The results proved that the induction motor with the MPC speed controller has superior transient response, and good robustness in face of uncertainties including load disturbance. Moreover, accurate tracking performance has been achieved.

A comparative study of speed control based on MPC and PI-controller for Indirect Field oriented control of induction motor drive

In this paper, a comparative study of speed control based on Model Predictive Control (MPC) and PI for Indirect Field oriented control of induction motor drive has been established. This paper proposes two schemes for vector control of induction motor (IM) drive. The first drive system is based on PI controller for speed control of IM. The second drive system is aimed to apply the MPC for speed control of IM. The performances of the two drive systems are compared. The validity of the two proposed systems have been demonstrated through computer simulations. The results obtained have confirmed that the drive system based on MPC is effective and robust against load disturbance. In addition, it has fast and good transient response over a wide speed range..

Vector controlled induction motor drive based on model predictive control

This paper presents the application of the model predictive control (MPC) technique for controlling the speed of the induction motor drive. Vector control principle has been used for decoupling between motor speed and rotor flux. A simple model of induction motor is employed in the MPC structure so as to minimize the computational load. The MPC controller design is taken into account the effect of uncertainty due to motor parameters variation and load disturbance could be reduced. The effectiveness of the proposed scheme has been successfully verified through simulations. The performance of the system including the MPC controller is compared with the corresponding one using the traditional PI controller. The results proved that the induction motor with the MPC speed controller has superior transient response, and good robustness in face of uncertainties including load disturbance. Moreover, accurate tracking performance has been achieved.

Sliding mode control of vector controlled induction motor drive

This paper presents the speed control of the induction motor drive. The control strategy is based on the sliding mode technique. The decoupling between motor speed and rotor flux amplitude has been achieved using the field orientation principle. The control law has been designed such that the uncertainty due to motor parameters variation can be eliminated. Also, the chattering problem associated with classical sliding mode control has been solved by suggesting an adaptive load torque disturbance estimator. Digital simulations have been carried out in order to evaluate the effectiveness of the proposed scheme. The induction motor with the proposed controller has been tested through mismatched rotor resistance, and load torque disturbance. The results prove that the induction motor with the proposed controller has good robustness in face of uncertainties including load disturbance. Moreover, accurate tracking performance has been achieved.

Cascade model predictive vector control of induction motor drive

In this paper, an approach using three model predictive controllers has been investigated for vector control induction motor drive. These controllers are connected in cascade in the feedforward, the first is used for speed control, the second is used for rotor flux control and the third is dedicated for current control. The validity of the proposed system has been demonstrated through computer simulations. A comparison between the proposed system and PI control has been offered. The results obtained have confirmed that the proposed system is effective and robust against load disturbance. In addition, it has fast and good dynamic response over a wide speed range.

The development of the direct electric drive system of a radar station antenna

The results of development of the direct electric drive system for a radar station antenna are presented. Electric drive arrangement is described, the results of the synthesis of regulators and digital simulation are given.

Precision radar-station antenna elevation angle electric drive

We present the results of development of the precision electric drive for the radar station antenna elevation angle. The report justifies a concept for building the electric drive and brings in the results of regulator synthesis as well as the results of digital simulation.

DC mains backup power system for frequency-controlled electric drive

This paper discusses the problems concerning design of a backup power supply system used for a frequency regulated AC electric drive. The one, in turn, is used in a circulating pump of a stand-alone object fed by DC mains. The backup power supply is based on a battery or an electromechanical generator. The topology and main characteristics of a bidirectional DC voltage regulator with galvanic isolation are considered. The control system structure is also described. Stability of operation at constant power mode of the converter is analyzed. Dynamic correction algorithm is proposed.

Direct current drive control based on the method of signal adaptive inverse model

Synthesis procedure based on method of a signal adaptive inverse model for automatic adjustable speed dc drive control system is observed. Obtained system is compared with a traditional cascade speed control system. Results of digital simulation of designed systems are performed. The systems sensitivity to parameters changes is analyzed.