Online identification of induction machine electrical parameters for vector control loop tuning

2003 ◽  
Vol 50 (2) ◽  
pp. 253-261 ◽  
Author(s):  
D. Telford ◽  
M.W. Dunnigan ◽  
B.W. Williams
Keyword(s):  
Vector Control ◽  
Induction Machine ◽  
Control Loop ◽  
Electrical Parameters ◽  
Online Identification ◽  
Loop Tuning

Asynchronous machine vector control: PIα controllers for current loops

2018 ◽  
Vol 234 (1) ◽  
pp. 107-117
Author(s):  
Rahma Hammami ◽  
Imène Ben Ameur ◽  
Khaled Jelassi
Keyword(s):  
Vector Control ◽  
Temperature Effect ◽  
Fractional Order ◽  
Induction Machine ◽  
Field Oriented Control ◽  
Electrical Parameters ◽  
Industrial Systems ◽  
Squirrel Cage ◽  
Simulation Results ◽  
Fractional Order Controller

This article deals with field-oriented control of induction machine squirrel cage. A robust fractional-order controller is applied and investigated to control the induction machine currents isd and isq. The fractional-order gives better fit in regulation operation. For this purpose, this controller form is recommended, especially in industrial systems, thanks to his flexibility, robustness and efficiency to solve complex problems such as electrical parameters changes (i.e. uncertain parameter) caused by the temperature effect. Based on frequency specification and several constraints, the fractional-order controller is designed. The fmincon toolbox optimization is used to adjust ki, kp and α values. In order to show the reliability of the developed controller in the induction machine behavior, several simulation results are carried out and illustrated.

scholarly journals Continuous Control Set Predictive Current Control for Induction Machine

2021 ◽  
Vol 11 (13) ◽  
pp. 6230
Author(s):  
Toni Varga ◽  
Tin Benšić ◽  
Vedrana Jerković Štil ◽  
Marinko Barukčić
Keyword(s):  
Control Method ◽  
Induction Machine ◽  
Current Control ◽  
Continuous Control ◽  
Loop Model ◽  
Voltage Reference ◽  
Control Loop ◽  
Speed Tracking ◽  
Finite Control ◽  
Control Set

A speed tracking control method for induction machine is shown in this paper. The method consists of outer speed control loop and inner current control loop. Model predictive current control method without the need for calculation of the weighing factors is utilized for the inner control loop, which generates a continuous set of voltage reference values that can be modulated and applied by the inverter to the induction machine. Interesting parallels are drawn between the developed method and state feedback principles that helped with the analysis of the stability and controllability. Simple speed and rotor flux estimator is implemented that helps achieve sensorless control. Simulation is conducted and the method shows great performance for speed tracking in a steady state, and during transients as well. Additionally, compared to the finite control set predictive current control, it shows less harmonic content in the generated torque on the rotor shaft.

scholarly journals Cascade Control of the Ground Station Module of an Airborne Wind Energy System

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8337
Author(s):  
Ali Arshad Uppal ◽  
Manuel C. R. M. Fernandes ◽  
Sérgio Vinha ◽  
Fernando A. C. C. Fontes
Keyword(s):  
Wind Energy ◽  
Sliding Mode ◽  
External Disturbance ◽  
Induction Machine ◽  
Energy System ◽  
Control Loop ◽  
Successful Operation ◽  
Ground Station ◽  
Wind Energy System ◽  
Rotor Flux

An airborne wind energy system (AWES) can harvest stronger wind streams at higher altitudes which are not accessible to conventional wind turbines. The operation of AWES requires a controller for the tethered aircraft/kite module (KM), as well as a controller for the ground station module (GSM). The literature regarding the control of AWES mostly focuses on the trajectory tracking of the KM. However, an advanced control of the GSM is also key to the successful operation of an AWES. In this paper we propose a cascaded control strategy for the GSM of an AWES during the traction or power generation phase. The GSM comprises a winch and a three-phase induction machine (IM), which acts as a generator. In the outer control-loop, an integral sliding mode control (SMC) algorithm is designed to keep the winch velocity at the prescribed level. A detailed stability analysis is also presented for the existence of the SMC for the perturbed winch system. The rotor flux-based field oriented control (RFOC) of the IM constitutes the inner control-loop. Due to the sophisticated RFOC, the decoupled and instantaneous control of torque and rotor flux is made possible using decentralized proportional integral (PI) controllers. The unknown states required to design RFOC are estimated using a discrete time Kalman filter (DKF), which is based on the quasi-linear model of the IM. The designed GSM controller is integrated with an already developed KM, and the AWES is simulated using MATLAB and Simulink. The simulation study shows that the GSM control system exhibits appropriate performance even in the presence of the wind gusts, which account for the external disturbance.

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