Experimental Comparison of Carrier and Space Vector PWM Control Methods for Three-Phase NPC Converters
Abstract.
Multilevel converters are powerful converters inthe medium-voltage high-power range. Inside this family ofconverters, the three-level neutral point clamped converter hasits own importance. The main control methods associated withthis converter are the carrier-based PWM with added DCcomponents and the space vector PWM. Two of the mostimportant features of the NPC converter are the neutral pointbalance and the output voltage ....etc

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ABSTRACT
Indirect field orientation (IFO) induction machine drives are increasingly employed in industrial drivesystems, but the drive performance is often degrades. Motor works on best performance at certain voltageand frequency for certain loads. In this paper artificial neural network is used to predict the operatingvoltage and frequency when the load torque and speed going changed so motor efficiency is increased.Simulation and experimental results are shown to validate the scheme.
I. INTRODUCTION
Because of their easy imp ....etc

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PRESENTED BY
R. RADHIKA
B. USHA RANI


ABSTRACT
Permanent magnet synchronous motor (PMSM) has been widely used in high performance drive applications for its advantages such as compactness, high efficiency, reliability and suitability to environment. Due to its high power density and smaller size, PMSM has evolved as the preferred solution for speed and position control drives on machine tools and robots. A Permanent Magnet Synchronous Motor (PMSM) is a motor that uses permanent magnets to produce the air g ....etc

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Kindly send me the paper titiled VECTOR CONTROL DRIVE OF PERMANENT MAGNET SYNCHRONOUS MOTOR USING MATLAB/SIMULINK to understand the modelling and contrrol of PMSM.

Thanks and Regards,
Hajmunnisa.T


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Abstract.
In this paper a novel modular digital controlalgorithm for multi level inverters is introduced and discussed.This algorithm is essentially based on the duty cycle expressionand allows a great simplification, because of its modularity andits simple implementation. The algorithm is particularly suitablefor the Multi Point Clamped (MPC) inverters with no constrainton the number of the voltage levels and results faster than themost recent solutions proposed in literature.The modulation techniques considered in the paper are the ....etc

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Vector Control of AC Induction Motors



Introduction

Scalar control of ac drives produces good steady state performance but poor dynamic response. This manifests itself in the deviation of air gap flux linkages from their set values. This variation occurs in both magnitude and phase.

Vector control (or field oriented control) offers more precise control of ac motors compared to scalar control. They are therefore used in high performance drives where ....etc

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This article is presented by:
O. Barambones∗, A.J. Garrido∗, F.J. Maseda∗ and P. Alkorta†Speed Sensorless Vector Control of Induction Motors Based on
Robust Adaptive Variable Structure Control Law

ABSTRACT
A novel sensorless adaptive robust control law is proposed to improve the trajectory tracking performance of induction motors. The proposed design employs the so called vector (or field oriented) control theory for the induction motor drives and the designed ....etc

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Novel Direct Torque Control Based on Space Vector Modulation WithAdaptive Stator Flux Observer for Induction Motors




INTRODUCTION


Direct torque control based on space vector modulation (DTC-SVM) preserve DTC transient merits, furthermore, produce better quality steady-state performance

In a wide speed range, at each cycle period, SVM technique is used to obtain the reference voltage space vector to exactly compensate the
flux and torque errors.

....etc

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Abstract:
The field oriented control emerged as an important approach for the control of AC machines, and continues to be explored and developed in the literature. The estimation of the rotor flux from the measurable variables was the only method used to implement the vector control of the induction machine. To replace the estimator based on the mathematical model of the system, which can lead to unintended errors due to uncertainties on the model and on the measures we use an appropriate observer.

Presented By:
Ch ....etc

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SPEED CONTROL OF AN INDUCTION MOTOR USING INDIRECT VECTOR CONTROL
ABSTRACT
Over the past two decades technological advances in power electronics and an increasing demand for high performance industrial machinery have contributed to rapid developments in digital motor control. This field of study has numerous applications in the areas of manufacturing, mining and transportation but sometime it is difficult to determine which technique is best suited to a particular application.
Induction motor is used as a variable speed drive in many indus ....etc

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