The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In order to solve such problem as sensitivity to the load torque variations of traditional PI speed controller for permanent magnetism synchronous machine (PMSM), and to reduce the overshoot of system speed, a nonlinear predictive controller design for PMSM speed control system is proposed in this paper. For the problem that a Taylor series is not easy to obtain in nonlinear predictive control, the...
This paper proposes the predictive controller design for a sensorless interior permanent magnet synchronous motor drive system. The predictive controllers include a current-loop predictive controller and a speed-loop predictive controller. By using the proposed control algorithms, the closed-loop sensorless interior permanent magnet synchronous motor drive system can achieve fast transient responses,...
In this paper two methods of torque control for induction motor have been investigated. First DTC method is implemented by using PI regulators and three-level inverter. Then an improved predictive torque control is developed and performed with two-level inverter. In the proposed predictive control the next torque and flux are predicted by discrete model of motor and inverter. Afterward the feasible...
This paper presents the digital implementation of torque and motion control of a Direct Current (DC) motor for direct-drive industrial robotic applications. The electromagnetic torque is controlled by using a predictive algorithm and the motion by using digital P-PI controllers in a cascaded structure. In this way, high-performance torque and position control can be achieved with the advantages of...
In this paper, in order suppressing torsional vibration of drive system of rotary machine, a kind of PI-DMC controller of multi-degree-of-freedom drive system is designed. Firstly, based on transfer function method, a kind of multi-degree-of- freedom drive system of rotary machine which takes into PI controller is established. Secondly, based on dynamic matrix predictive control (DMC), a kind of PI-DMC...
This paper presents a cascaded nonlinear predictive control of a permanent magnet synchronous motor (PMSM) drive. The Taylor series expansion is used to carry out the prediction defined on a finite horizon. However, it's well-known that this control strategy cannot remove completely the steady state error under mismatched parameters and load torque. Then, the full knowledge of machine parameters and...
This paper presents a sensorless predictive torque control. The predictive torque control is based on pre-calculation of the best switching state in order to keep the state variables close to desired values. The control scheme uses a proportional-integral controller inside of predictive control in order to improve the steady state response. The stator flux that determines the stator voltage is pre-calculated...
In terms of analysis of permanent magnet synchronous motor (PMSM)drive system, the CARIMA (controlled auto-regressive integrated moving average) model of the object and the predicted PI velocity controller which was based on generalized predictive control (GPC) was established, the parameters of the model were identified by RLSM (recursive least squares method).
To minimize the ripples of the electromagnetic torque and flux linkage, fix the variable switching frequency, produced in the conventional direct torque control (DTC) system for permanent magnet synchronous motor (PMSM), a space vector modulation (SVM) DTC strategy was introduced based on PI predictive controller. This strategy and the conventional DTC were simulated by the Matlab/Simulink toolbox,...
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...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.