scholarly journals Enhanced space vector modulated scalar control of induction motor

2021 ◽  
Vol 21 (2) ◽  
pp. 707
Author(s):  
Ramana Vasu. R ◽  
George Fernandez S. ◽  
Vijayakumar K.
Keyword(s):  
Vector Control ◽  
Induction Motor ◽  
High Performance ◽  
Reference Signal ◽  
Space Vector ◽  
Asynchronous Machine ◽  
Speed Controller ◽  
Pi Controllers ◽  
Dc Bus ◽  
Bus Voltage

<p>A conventional vector control of the asynchronous machine makes an analogy of an equivalent separately excited DC machine. It offers a decoupled control of torque and flux which is perpendicular to each other hence one vector is not interfered by other parameters. So, torque and speed control is achieved in an isolated manner even though they are closely interlinked. This is implemented by aligning the rotor flux with the direct axis of the synchronously rotating reference frame. PI controllers play a key role to achieve the desired topology of the VFD. Three controllers are used in the system, flux, speed and torque controller. Tuning of flux controller is quite simple, but in case of speed and torque, it became quite tricky because the output of the speed controller is the reference signal of torque controller. Moreover, there is no distinct method to tune the controllers in the vector control system. Still, the entire high-performance dynamic response of the machine depends on the perfect tuning of those controllers. From the above analysis, it is understood that system identification is essential to tune the PI controllers. But being an asynchronous machine, to obtain system transfer function in a decoupled manner is very difficult. To overcome this problem, the proposed model will be Conventional sine PWM modulated switching pulses are used to implement variable frequency drives for induction motor. Space vector modulated PWM switching pulse is used to fire IGBT. In the case of sine, PWM modulated switching; DC bus voltage utilization is 50% whereas in space vector modulated inverter 57.73% DC Bus voltage utilization can be achieved. <strong></strong></p>

scholarly journals SPEED CONTROL OF DTC-SVM FOR INDUCTION MOTOR DRIVE USING SELF-TUNING FUZZY PI CONTROLLER ANN ANFIS

2019 ◽  
Vol 11 (3) ◽  
pp. 293-308
Author(s):  
Rawaa Kadhim Sakran ◽  
Assist. Prof. Dr. Khearia Mohammed Ali
Keyword(s):  
Induction Motor ◽  
High Performance ◽  
Direct Torque Control ◽  
Torque Control ◽  
Speed Controller ◽  
Three Phase ◽  
Pi Controllers ◽  
Self Tuning ◽  
Fuzzy Pi Controller ◽  
Vector Modulation

This paper deals with the performance analysis of three phase Induction Motor (IM) with Direct Torque Control based Space Vector Modulation (DTC-SVM). The DTC-SVM scheme is a kind of high-performance control of IM drives to improve the ripples of torque and flux in steady state, which one drawback of conventional DTC. DTC-SVM has three Proportional-Integral (PI) controllers, one used as the PI speed controller and other PI flux controller and PI torque controller, which are utilized to produce the stator voltage references (

Variable Speed Vector Control for Induction Motor of Electric Vehicle

2014 ◽  
Vol 699 ◽  
pp. 759-764
Author(s):  
Amilia Emil Hasan ◽  
Haryani Hassan ◽  
Ismadi Bugis
Keyword(s):  
Embedded System ◽  
Vector Control ◽  
Induction Motor ◽  
Control Method ◽  
Torque Ripple ◽  
Electromagnetic Torque ◽  
Motor Speed ◽  
Speed Controller ◽  
Speed Performance ◽  
Constant Output

This paper presents the speed performance of an induction motor by using a vector control. The control scheme used is an indirect vector control for define speed command. The main focus of this research is to observe on the dynamic speed performance of the induction motor when the command speed is given to the motor. In this study, the system of indirect vector control will be built by using Matlab Simulink. In fact, the expression of exciting flux linkage and electromagnetic torque are used to create a simple embedded system which to find out the effects of flux weakening in motor while, the gain of the speed controller is 100. The result shows that the vector control method will cause immediate the motor speed response with a small electromagnetic torque ripple. Furthermore, the output mechanical torque starts to decrease when the motor speed above the base speed to maintain a constant output power operation. This paper contributes a new algorithm to analysis the system when the speed motor is higher than a base speed.

scholarly journals A Novel Vector Control Strategy for a Six-Phase Induction Motor with Low Torque Ripples and Harmonic Currents

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1102 ◽  
Author(s):  
Hamidreza Heidari ◽  
Anton Rassõlkin ◽  
Toomas Vaimann ◽  
Ants Kallaste ◽  
Asghar Taheri ◽  
...  
Keyword(s):  
Vector Control ◽  
Induction Motor ◽  
Control Strategy ◽  
High Performance ◽  
Direct Torque Control ◽  
Low Frequency ◽  
Torque Control ◽  
Harmonic Currents ◽  
Torque Ripples ◽  
Vector Control Strategy

In this paper, a new vector control strategy is proposed to reduce torque ripples and harmonic currents represented in switching table-based direct torque control (ST-DTC) of a six-phase induction motor (6PIM). For this purpose, a new set of inputs is provided for the switching table (ST). These inputs are based on the decoupled current components in the synchronous reference frame. Indeed, using both field-oriented control (FOC) and direct torque control (DTC) concepts, precise inputs are applied to the ST in order to achieve better steady-state torque response. By applying the duty cycle control strategy, the loss subspace components are eliminated through a suitable selection of virtual voltage vectors. Each virtual voltage vector is based on a combination of a large and a medium vector to make the average volt-seconds in loss subspace near to zero. Therefore, the proposed strategy not only notably reduces the torque ripples, but also suppresses the low frequency current harmonics, simultaneously. Simulation and experimental results clarify the high performance of the proposed scheme.

scholarly journals Review and Investigation of Simplified Rules Fuzzy Logic Speed Controller of High Performance Induction Motor Drives

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 49377-49394 ◽  
Author(s):  
Qazwan A. Tarbosh ◽  
Omer Aydogdu ◽  
Nabil Farah ◽  
Md Hairul Nizam Talib ◽  
Adeeb Salh ◽  
...  
Keyword(s):  
Fuzzy Logic ◽  
Induction Motor ◽  
High Performance ◽  
Motor Drives ◽  
Induction Motor Drives ◽  
Speed Controller

Switching FOC Method for Vector Control of Single-Phase Induction Motor Drives

2016 ◽  
Vol 6 (2) ◽  
pp. 474
Author(s):  
Mohammad Jannati ◽  
Nik Rumzi Nik Idris ◽  
Mohd Junaidi Abdul Aziz ◽  
Tole Sutikno ◽  
M. Ghanbari
Keyword(s):  
Vector Control ◽  
Induction Motor ◽  
High Performance ◽  
Single Phase ◽  
Control Method ◽  
Controller Design ◽  
Motor Drives ◽  
Induction Motor Drives ◽  
Rotating Reference Frame ◽  
Rotor Flux

This paper proposes a novel vector control method based on Rotor flux Field-Oriented Control (RFOC) for single-phase Induction Motor (IM) drives. It is shown that in a rotating reference frame, the single-phase IM equations can be separated into forward and backward equations with balanced structures. In order to accommodate for these forward and backward equations, a drive system consisting of two RFOCs that are switched interchangeably, is proposed. Alternatively, these two RFOC algorithms can be simplified as a single FOC algorithm. The analysis, controller design and simulation of the proposed technique showed that it is feasible for single-phase IM drive for high performance applications.

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