scholarly journals Sensorless Fractional Order Control of PMSM Based on Synergetic and Sliding Mode Controllers

Electronics ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1494 ◽  
Author(s):  
Marcel Nicola ◽  
Claudiu-Ionel Nicola
Keyword(s):  
Control System ◽  
Fractional Order ◽  
Sliding Mode ◽  
Permanent Magnet Synchronous Motor ◽  
Speed Control ◽  
Current Control ◽  
Torque Control ◽  
Rotor Speed ◽  
Control Loops ◽  
Wide Range

The field oriented control (FOC) strategy of the permanent magnet synchronous motor (PMSM) includes all the advantages deriving from the simplicity of using PI-type controllers, but inherently the control performances are limited due to the nonlinear model of the PMSM, the need for wide-range and high-dynamics speed and load torque control, but also due to the parametric uncertainties which occur especially as a result of the variation of the combined rotor-load moment of inertia, and of the load resistance. Based on the fractional calculus for the integration and differentiation operators, this article presents a number of fractional order (FO) controllers for the PMSM rotor speed control loops, and id and iq current control loops in the FOC-type control strategy. The main contribution consists of proposing a PMSM control structure, where the controller of the outer rotor speed control loop is of FO-sliding mode control (FO-SMC) type, and the controllers for the inner control loops of id and iq currents are of FO-synergetic type. Superior performances are obtained by using the control system proposed, even in the case of parametric variations. The performances of the proposed control system are validated both by numerical simulations and experimentally, through the real-time implementation in embedded systems.

scholarly journals Current Regulator Design for Dual Y Shift 30 Degrees Permanent Magnet Synchronous Motor

Electronics ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 777
Author(s):  
Zhihong Wu ◽  
Weisong Gu ◽  
Yuan Zhu ◽  
Ke Lu ◽  
Li Chen ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Pulse Width Modulation ◽  
Sliding Mode ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Current Control ◽  
Parameter Uncertainties ◽  
Control Loops ◽  
Decomposition Space ◽  
Harmonic Currents

This paper gives the current regulator design for a dual Y shift 30 degrees permanent magnet synchronous motor (DT_PMSM) based on the vector space decomposition (VSD). Current regulator design in α-β subspace is insufficient and designing additional controllers in x-y subspace is necessary to eliminate the harmonic currents due to the nonlinear characteristics of the inverter. A sliding mode controller based on an internal model is proposed in α-β subspace, which is robust to the parameter uncertainties and disturbances in current control loops. In order to eliminate the harmonic currents in x-y subspace, a resonant controller is employed based on a new synchronous rotating matrix. Three-phase decomposition space vector pulse width modulation (SVPWM) technique is illustrated for the purpose of synthesizing the voltage vectors in both subspaces simultaneously. The feasibility and efficiency of the suggested current regulator design are validated by a set of experimental results.

scholarly journals SMC based DTC-SVM control of five-phase permanent magnet synchronous motor drive

2020 ◽  
Vol 20 (1) ◽  
pp. 100
Author(s):  
Fayçal Mehedi ◽  
Rachid Taleb ◽  
Abdelkadir Belhadj Djilali ◽  
Adil Yahdou
Keyword(s):  
Permanent Magnet ◽  
Control Method ◽  
Sliding Mode ◽  
Permanent Magnet Synchronous Motor ◽  
Direct Torque Control ◽  
Synchronous Motor ◽  
Torque Control ◽  
Control Technique ◽  
Rotor Speed ◽  
Parameter Variations

<span>This article presents an improved Direct Torque Control (DTC) technique with space vector modulation (SVM) for a five-phase permanent magnet synchronous motor (PMSM) using a sliding mode speed control (SMC).The proposed control scheme of the five-phase PMSM combines the advantages of SMC control and the SVM algorithm. The SMC method insensitive to uncertainties, in particular external disturbances and parameter variations. In this paper, the SMC controller is used to control the rotor speed of the five-phase PMSM based on DTC-SVM. The rotor speed response, torque and stator flux are determined and compared with traditional control method. The simulations results confirm the validity and effectiveness of the proposed control technique in terms of performance and robustness against machine parameter variations (inertia variation). The efficiency of the proposed method applied on the five-phase PMSM is verified by the MATLAB/Simulink.</span>

scholarly journals Sistem Kontrol Torsi pada Motor DC

2016 ◽  
Vol 6 (1) ◽  
pp. 93
Author(s):  
Arifin Wahid Ibrahim ◽  
Triyogatama Wahyu Widodo ◽  
Tri Wahyu Supardi
Keyword(s):  
Control System ◽  
Speed Control ◽  
Maximum Load ◽  
Dc Motor ◽  
Current Control ◽  
Torque Control ◽  
Motor Speed ◽  
Current Field ◽  
Load Torque ◽  
Heavy Loads

AbstrakPenggunaan motor DC di dunia industri sangat penting. Kecepatan dan torsi motor DC sangat mempengaruhi kualitas dan kuantitas produk yang dihasilkan. Untuk itu, diperlukan sistem kontrol motor DC yang dapat diatur kecepatan dan torsinya. Banyak pelaku industri mengeluhkan kerusakan pada motor DC disebakan beban yang diangkut motor melebihi kemampuan torsi motornya. Berdasarkan permasalahan tersebut dibuatlah sistem kontrol torsi motor DC.Sistem kontrol torsi dibuat dengan cara mengatur arus armaturnya pada motor DC penguat terpisah dengan kondisi arus fieldnya tetap. Sistem kontrol torsi ini bersifat dua level yaitu, sistem kontrol kecepatan dan sistem kontrol arus sehingga sinyal keluaran sistem kontrol kecepatan akan menjadi sinyal reference arus.Pengujian dilakukan dengan beban maksimal 3690 gram dan arus nominal sebesar 0,8 A atau torsi nominal sebesar 0,323 Nm. Hasil menunjukkan torsi efektif motor mampu diatur dengan kisaran 0,182 Nm - 0,243 Nm. Diharapkan dengan harga torsi efektif yang diatur mampu menahan beban seberat apapun tanpa merusak motor tersebut.Kata kunci—  Motor DC, Kecepatan, TorsiAbstractThe use of a DC motor in the industrialized world is very important. Speed of DC motor and torque of DC motor greatly affects quality and quantity of product. Therefore, we need control system of a DC motor that can be set speed and torque. The number of industry players complained about damage to the DC motor because transported load torque of motor exceeds capabilities of torque of DC motor. Based on these problem, we should make torque control system in DC motor.Torque control system made by regulating armature current of DC motor separately excited with current field  constant condition. Torque control system consist of speed control and current control, namely control system two level. Output signal speed control system will be the current reference signal.Testing has been carried out with a maximum load of 3690 grams and a nominal current of 0.8 A or nominal torque of 0.323 Nm. The results shows the effective torque of motor is able to be set in the range of 0.182 Nm - 0,243 Nm. Expected to value effective of regulated torque is able to withstand infinite heavy loads without damaging the motor.Keywords—  DC Motor, Speed, Torque

scholarly journals Design and Modeling of a Robust Sensorless Control System for a Linear Permanent Magnet Synchronous Motor

Electronics ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 966
Author(s):  
Mahmoud A. Mossa ◽  
Hamdi Echeikh ◽  
Ziad M. Ali ◽  
Mahrous Ahmed ◽  
Saad F. Al-Gahtani ◽  
...  
Keyword(s):  
Control System ◽  
Transfer Functions ◽  
Permanent Magnet Synchronous Motor ◽  
Current Control ◽  
Load Force ◽  
Variable Speed ◽  
Control Loops ◽  
Stator Resistance ◽  
Motor Model

The paper is concerned with designing an effective controller for a linear tubular homopolar (LT-H) motor type. The construction and operation of the LT-H motor are first described in detail. Then, the motor model is represented in the direct-quadrature (d-q) axes in order to facilitate the design of the control loops. The designed control system consists of two main loops: the current control loop and velocity adaptation loop. The determination of the regulator’s gains is accomplished through deriving and analyzing the transfer functions of the loops. To enhance the system’s robustness, a robust variable estimator is designed to observe the velocity and stator resistance. Different performance evaluation tests are performed using MATLAB/Simulink software to validate the controller’s robustness for variable-speed operation and load force changes as well. The obtained results reveal the appropriate dynamics of the motor thanks to the well-designed control system.

scholarly journals A robust high-speed sliding mode control of permanent magnet synchronous motor based on simplified hysteresis current comparison

2021 ◽  
Vol 12 (1) ◽  
pp. 1
Author(s):  
Ifeanyi Chinaeke-Ogbuka ◽  
Augustine Ajibo ◽  
Kenneth Odo ◽  
Uche Ogbuefi ◽  
Muncho Mbunwe ◽  
...  
Keyword(s):  
Sliding Mode Control ◽  
Permanent Magnet ◽  
High Speed ◽  
Sliding Mode ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Pi Controller ◽  
Current Control ◽  
Rotor Speed ◽  
Mode Control

A robust high-speed sliding mode control (SMC) of three phase permanent magnet synchronous motor (PMSM) is presented. The SMC served for inner speed control while a simplified hysteresis current control (HCC) scheme was used in the outer current control to generate gating signals for the inverter switches. The present research leverages on the ability of SMC to directly access system speed error which it attempts driving to zero by cancelling modelling uncertainties and disturbances. Performance comparison was done for the SMC model and an existing model having classical PI controller. With the initial positive speed command of 200 rpm at 5 Nm constant loading, rotor speed with SMC neatly settled to the reference speed at 0.085 seconds without overshoot while the rotor speed of the model with PI controller settled at 0.217 seconds after overshoot. This translates to 155.3% speed enhancement. Similar superior speed performance of the SMC was also observed during recovering from sudden speed reversal. While the SMC model recovered and settled to the reference speed of -200 rpm at 0.369 seconds, the model with PI controller settled at 0.482 seconds. From the results, it can be seen that SMC demonstared superiority over the conventioanl PI controller for complex drives systems.

Stability Analysis of Sensorless Speed Control for PMSM Considered Current Control System

2018 ◽  
Vol 138 (11) ◽  
pp. 848-856
Author(s):  
Sari Maekawa ◽  
Mariko Sugimoto ◽  
Keiichi Ishida ◽  
Masaya Nogi ◽  
Masaki Kanamori
Keyword(s):  
Control System ◽  
Stability Analysis ◽  
Speed Control ◽  
Current Control

scholarly journals Research on an Improved Sliding Mode Sensorless Six-Phase PMSM Control Strategy Based on ESO

Electronics ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1292
Author(s):  
Hanying Gao ◽  
Guoqiang Zhang ◽  
Wenxue Wang ◽  
Xuechen Liu
Keyword(s):  
Control System ◽  
Control Strategy ◽  
Sliding Mode ◽  
High Reliability ◽  
Permanent Magnet Synchronous Motor ◽  
Torque Ripple ◽  
Estimation Accuracy ◽  
Switching Function ◽  
Motor Speed ◽  
Rotor Position

The six-phase motor control system has low torque ripple, low harmonic content, and high reliability; therefore, it is suitable for electric vehicles, aerospace, and other applications requiring high power output and reliability. This study presents a superior sensorless control system for a six-phase permanent magnet synchronous motor (PMSM). The mathematical model of a PMSM in a stationary coordinate system is presented. The information of motor speed and position is obtained by using a sliding mode observer (SMO). As torque ripple and harmonic components affect the back electromotive force (BEMF) estimated value through the traditional SMO, the function of the frequency-variable tracker of the stator current (FVTSC) is used instead of the traditional switching function. By improving the SMO method, the BEMF is estimated independently, and its precision is maintained under startup or variable-speed states. In order to improve the estimation accuracy and resistance ability of the observer, the rotor position error was taken as the disturbance term, and the third-order extended state observer (ESO) was constructed to estimate the rotational speed and rotor position through the motor mechanical motion equation. Finally, the effectiveness of the method is verified by simulation and experiment results. The proposed control strategy can effectively improve the dynamic and static performance of PMSM.

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