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.
This paper presents a H∞ methodology design of a linearized polytopic model for an induction motor. Output feedback controller is designed to provide non saturate control and minimum tracking error of both rotor speed and flux norm when the model is subjected to parameter variation. The nominal plant of a fourth order polytopic model is used to implement an LMI-based H∞ approach. Numerical simulation...
The induction motor is the principal source of the workhorse [1] in the industry. However, due to its high non linearity, a high-performance control of induction motor remains a challenge for the automation. In this paper, we present a robust solution for the observer and control of the induction machine taking into account the iron losses. The proposed technique is based on Lyapunov theory and application...
This paper introduces designing of a Takagi-Sugeno (T-S) fuzzy, state feedback controller so as to have optimal and robust full-range speed control over the wounded rotor induction motor. A slip energy recovery drive system, using 12-pulse converter and a shunt chopper is used as a modified system to drive a slip ring induction motor, which is coupled with a class of nonlinear uncertain load. Using...
This paper presents stability analysis of a distributed generation (DG) controller, in an islanded mode, based on the Mapping Theorem and the Zero Exclusion Condition, and validates the results based on a laboratory scale experimental setup. The DG unit is interfaced to the host system through a voltage-sourced converter (VSC). The control strategy regulates the load voltage at the desired value in...
H∞ robust control is employed to deal with parameters perturbation and external disturbance attenuation for an induction motor with rotor field oriented in this paper. Firstly, nonlinear compensation is introduced to realize dynamically input-output decoupling for induction motor with rotor field oriented to solve the problems that vector control of induction motor only realizes partial steady state...
This paper presents a robust speed sensorless vector control system of medium voltage induction motor. Rotor speed estimation based on Luenberger observer is analyzed as well as the influence of the motor parameter variation to the estimation accuracy. The characteristics of the motor parameter influence are generalized. According to the different influence of parameter variation at different operating...
Induction Motor (IM) speed control is an area of research that has been in prominence for some time now. In this paper, a nonlinear controller is presented for IM drives. The nonlinear controller is designed based on input-output feedback linearization control technique, combined with sliding mode control (SMC) to obtain a robust, fast and precise control of IM speed. The input-output feedback linearization...
In this paper the IFOC open loop torque controller for induction motors is studied via linear approximations. Thanks to this study several important characteristics of IFOC are elucidated. Moreover, this analysis aids in the design of linear, robust and performance-based torque, speed or position controllers. A case study with real-time results is included.
It is difficult to develop an accurate mathematical model for the induction motor and the robustness of vector control system is poor. This paper firstly uses the linear active disturbance rejection controller (LADRC) in inductor motor drive system. The controller is not overly dependent on the accurate mathematical model of motor, so the system is inherently robust, and it can estimate and compensate...
This paper demonstrates the improved speed tracking performance of fuzzy based indirect field oriented control of induction motor drives in comparison to a conventional PI control in hybrid electric vehicle (HEV) application. Both types of controllers are subjected to changes in loading conditions and rotor resistance which is expected to vary with the high temperature of HEV drive environment. Results...
In this paper, an adaptive flux observer is designed for a speed sensorless direct torque controlled induction motor drive in which the rotor resistance value is updating during operation and a new speed-adaptive law is given. By using robust control theory, the constant observer gain is obtained by solving two bilinear matrix inequalities. The stability of the flux observer is ensured in a sufficiently...
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.