Speed Estimation Direct Stator Field-orientation-controlled Induction Motor Drive Using Adaptive Flux Estimator

Abstract

In this study, a speed estimation scheme using the fuzzy logic control (FLC) strategy adaptive flux estimator is presented for a direct stator field-orientation-controlled (DSFOC) induction motor (IM) drive. The current and flux of the stator were utilized to establish the DSFOC IM drive, and the stator current was obtained from the IM by utilizing Hall effect current sensors. The adaptive stator flux estimator was developed according to the voltagemodel and current-model stator flux estimators, and the estimated rotor speed was derived from this flux estimator. The adaptation mechanism of the adaptive stator flux estimator was designed using the FLC strategy. The synchronous position angle for the coordinate transformation between the stationary and synchronous reference coordinate frames was developed using the model reference adaptive system (MRAS) based on the reactive power of an IM. The MATLAB\Simulink ® toolbox was used to simulate this system, and all the control algorithms were realized using a 32-bit RX62T microcontroller to validate this approach. Both simulation and experimental results (including the estimated rotor speed, electromagnetic torque, and stator flux locus) confirmed the effectiveness of the proposed system and validated the proposed approach.

Vector-controlled Permanent Magnet Synchronous Motor Drive Speed Identification Using General Regression Neural Network

“…An inspection of the first row of the state equation in Eq. (1) shows that the second term on the right side is a coupling component in relation to the q-axis stator current. Furthermore, an inspection of the second row of Eq.…”

“…However, the coupling and timevarying mathematical model makes the control of PMSM more complicated than that of DC motors. According to the vector-controlled theory of AC motors, (1) the complicated mathematical model of a PMSM is separated into the torque-current and flux-current components through coordinate transformation, which are orthogonal to each other, and then the maximum torqueto-current ratio of a PMSM is achieved. A traditional vector-controlled PMSM drive requires an encoder to detect the shaft position.…”

Direct Torque Control Induction Motor Drive for Speed Estimation Using Modified Particle Swarm Optimization Algorithm

“…where P is the motor pole number. The mechanical equation of the motor is acquired as (22) e m rm m rm L…”

A new simplified sensorless direct stator field-oriented control of induction motor drives

“…Several solutions are proposed for these problems. Solutions to the problem of variation of the stator resistance are such as in Nagataki et al (2020) and Bai-shan and Wen-qi, (2010), solutions to the problem of pure integrators are such as in Liu et al (2007), Zhang and Dai, (2010), Man andChen, (2011), andLuo et al (2020), combined solutions to both problems are such as in Mitronikas et al (2001), Mitronikas and Safacas, (2004), Lee et al (2014), and Mei and Feng, (2014), and solutions to the problem of coupling effects between the motor speed and the stator flux are such as in Liu et al (2007) and Amiri and Khaburi, (2012).…”