Sensorless Vector Control of Induction Motor Based on Machine Model

2012 ◽  
Vol 572 ◽  
pp. 371-375 ◽  
Author(s):  
Xin Qi ◽  
Chang Song Wang ◽  
Xiang Hua Ma
Keyword(s):  
Vector Control ◽  
Induction Motor ◽  
High Reliability ◽  
Low Cost ◽  
Current Model ◽  
Open Loop ◽  
Machine Model ◽  
Speed Sensor ◽  
Sensorless Vector Control ◽  
Rotor Flux

Spatial orientation and magnitude of the rotor flux is essential for vector control of induction motor. Traditionally, current model serves for rotor flux estimation and rotor must be measured by speed sensor. Due to advantages of low cost and high reliability, control the induction motor without sensor draws great attention of scholars around the world. Closed-loop observers or open-loop estimators are used for such purpose. In this paper a new method of sensorless vector control of induction motor is proposed and simulation is implemented to verify the scheme.

Design of Sensorless Vector Control System for Induction Motors

2011 ◽  
Vol 58-60 ◽  
pp. 2046-2050 ◽  
Author(s):  
Jun Li Gao ◽  
Shi Jun Chen ◽  
Guo Cai Li
Keyword(s):  
Vector Control ◽  
Induction Motor ◽  
Orientation Angle ◽  
Online Identification ◽  
Speed Regulation ◽  
Sensorless Vector Control ◽  
Static Performance ◽  
Rotor Flux ◽  
Vector Control System ◽  
Model Reference Adaptive

Online identification of motor rotor speed by using modified rotor flux orientation angle estimator and model reference adaptive system achieves sensorless vector control of induction motor. The principle verification conducted on self-developed sensorless vector control of induction motor shows that the system has good dynamic & static performance and induction motor achieves significant improvement in speed regulation in the premise of not adding cost of general inverters.

scholarly journals Real time implementation of adaptive sliding mode observer based speed sensor less vector control of induction motor

2010 ◽  
Vol 7 (2) ◽  
pp. 167-184 ◽  
Author(s):  
Karim Negadi ◽  
Abdellah Mansouri ◽  
Belkheir Khtemi
Keyword(s):  
Vector Control ◽  
Induction Motor ◽  
Sliding Mode ◽  
Motor Drives ◽  
Sliding Mode Observer ◽  
Electrical Drives ◽  
Speed Sensor ◽  
Rotor Flux ◽  
The Cost ◽  
Hostile Environments

Sensor less induction motor drives are widely used in industry for their reliability and flexibility. However, rotor flux and speed sensors are required for vector control of induction motor. These sensors are sources of trouble, mainly in hostile environments, and their application reduces the drive robustness. The cost of the sensors is not also negligible. All the reasons lead to development of different sensor less methods for rotor flux and mechanical speed estimation in electrical drives. The paper deals with the speed estimators for applications in sensor less induction motor drive with vector control, which are based on application of model adaptive, based sliding mode observer methods. This paper presents the development and DSP implementation of the speed estimators for applications in sensor less drives with induction motor.

Speed Sensorless Vector Control of Cascaded Inverter for Asynchronous Motor

2012 ◽  
Vol 241-244 ◽  
pp. 1797-1801
Author(s):  
Qi Yang ◽  
Yu Feng Zhang ◽  
Shi Bao Qian ◽  
Bing Li
Keyword(s):  
Vector Control ◽  
Reference Frame ◽  
Reference Model ◽  
Current Model ◽  
Asynchronous Motor ◽  
Speed Sensorless ◽  
Two Phase ◽  
Sensorless Vector Control ◽  
Rotating Reference Frame ◽  
Rotor Flux

According to speed sensorless vector control of Asynchronous motor for Cascaded high voltage inverter, a model reference adaptive system (MRAS) implemented in two phase rotating reference frame was studied to identify the rotor speed of an asynchronous motor. To eliminate the inherent limitations of MRAS in two phase stationary reference frame, the reference model and adjustable model used in this MRAS scheme are composed of an improved rotor flux voltage model and rotor flux current model in two phase rotating reference frame respectively. Simulation and experimental results show that the vector control system can estimate the flux and speed with good accuracy, and run with good static and dynamic performance in start, speed regulation and steady operation.

scholarly journals Robust Speed-Sensorless Vector Control of Doubly Fed Induction Motor Drive Using Sliding Mode Rotor Flux Observer

2018 ◽  
Vol 7 (3) ◽  
pp. 235
Author(s):  
Djamila Cherifi ◽  
Yahia Miloud
Keyword(s):  
Vector Control ◽  
Induction Motor ◽  
Sliding Mode ◽  
Motor Speed ◽  
Speed Sensorless ◽  
Flux Observer ◽  
Sensorless Vector Control ◽  
Separate Control ◽  
Rotor Flux ◽  
Doubly Fed

This paper presents a robust observer for sensorless speed control of doubly fed induction motor (DFIM), based on the slidin mode. In the first step, a model of the doubly fed induction motor fed by two PWM inverters with separate DC bus link is developed. In the second step and in order to provide a robust separate control between flux and motor speed a vector control by field oriented strategy applying a sliding mode regulator was implemented. Finally, speed estimation of a doubly fed induction motor based on sliding mode observer is presented. The simulation tests schow the effectiveness of the proposed method especially in the load disturbances, the change of the refrence speed and low speed. Also the influence of parameter variations will be studied by simulation

Sign in / Sign up

Export Citation Format

Share Document