Sensorless control of induction motors with simultaneous on-line estimation of rotor resistance and speed based on the feedforward torque control scheme

2003 ◽  
Author(s):  
S.K. Jeong ◽  
Z.G. Lee ◽  
H.A. Toliyat ◽  
P. Niazi
Keyword(s):  
Induction Motors ◽  
Sensorless Control ◽  
Torque Control ◽  
Rotor Resistance ◽  
Control Scheme ◽  
On Line

Efficiency Optimization in Speed-Sensorless Control of Induction Motors

2014 ◽  
Vol 672-674 ◽  
pp. 1214-1218
Author(s):  
Hai Fang Yu ◽  
Peng Gao ◽  
Shun Jie Han
Keyword(s):  
Control Strategy ◽  
Induction Motors ◽  
Sensorless Control ◽  
Direct Torque Control ◽  
Torque Control ◽  
Optimal Control Strategy ◽  
Speed Sensorless ◽  
Efficiency Optimization ◽  
Motor Efficiency ◽  
Loss Efficiency

An efficiency optimization model for induction motors with speed-sensorless control is presented in this paper. An mathematical loss model with stator iron loss in DTC(Direct Torque Control) system is used to calculate the motors loss, the loss efficiency and the optimal flux. Additionally, the efficiency optimization control strategy combined with the speed-sensorless model is used to rebuild the simulation modeling. The simulation results with the proposed control strategy show superior effects compared to the traditional control methods. The optimal control strategy can be achieved to improve the motor efficiency.

Design of H∞ Position Tracking Controllers for Current-Fed Induction Motors Used in Articulated Mechanical Loads

2002 ◽  
Vol 124 (3) ◽  
pp. 485-491
Author(s):  
Stefano Chiaverini ◽  
Giuseppe Fusco
Keyword(s):  
Induction Motors ◽  
Robot Manipulator ◽  
Tracking Errors ◽  
Rotor Resistance ◽  
Control Scheme ◽  
Tracking Controllers ◽  
Riccati Matrix Equation ◽  
Set Up ◽  
Riccati Matrix

This paper describes a systematic procedure to design H∞ position and flux-norm tracking controllers for current-fed induction motors. The designed controllers achieve convergence to zero of both position and flux-norm tracking errors while ensuring robustness with respect to unknown load torque disturbances. The proposed procedure offers the possibility of a simple development of the controllers’ design; in particular, it does not require a numerical solution of the Riccati matrix equation. A case study has been set up which considers the application of the proposed control scheme to a two-link robot manipulator system actuated by two induction motors. Numerical simulation results confirm the validity of the proposed design methodology, even in the presence of rotor resistance uncertainty.

New direct torque control scheme for induction motors

2005 ◽  
Author(s):  
X. del Toro ◽  
M.G. Jayne ◽  
P.A. Witting ◽  
J. Pou ◽  
A. Arias ◽  
...  
Keyword(s):  
Induction Motors ◽  
Direct Torque Control ◽  
Torque Control ◽  
Control Scheme

scholarly journals SPEED CONTROL OF INDUCTION MOTOR USING ADR CONTROLLER

2015 ◽  
pp. 266-270
Author(s):  
MADHURI JAKKAMPUDI ◽  
GRANDHI RAMU
Keyword(s):  
Induction Motor ◽  
Induction Motors ◽  
Direct Torque Control ◽  
Torque Control ◽  
Primary Concern ◽  
Reduced Order ◽  
Active Disturbance Rejection ◽  
Rotor Resistance ◽  
Disturbance Rejection Control ◽  
Highly Nonlinear

The control of induction motors has been a primary concern of researchers. Proportional-integral- derivative (PID) control and direct torque control (DTC) have been proposed for induction motors [1-6]. However, the control of induction motors is still a challenging problem due to the following issues: 1) the dynamic system of an induction motor is highly nonlinear; 2) the rotor resistance varies because of heating. In this paper, a reduced-order active disturbance rejection control (ADRC) with reduced order extended state observer (RESO) is applied for induction motor control. The ADRC is employed for controlling a slip.

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