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Designing A Sensorless Torque Estimator For Direct Torque Control Of An Induction Motor

May 26th, 2010

I. INTRODUCTION

A. BACKGROUND

B. OBJECTIVE

C. INDUCTION MOTOR OVERVIEW

D. APPROACH

II. OBSERVER OF THE ELECTROMAGNETIC TORQUE

A. DERIVATION OF TORQUE EQUATION

1. Flux Linkage and Voltage Equations in the Arbitrary (qd0) Reference Frame

2. Electromagnetic Torque Equation

B. TORQUE ESTIMATOR IN SIMULINK/MATLAB ENVIROMENT

1. Designing the Torque Estimator

2. Computer Simulation — Analysis of the Results

a. Applying a High Pass Filter after the Integration

b. Placing a Low Pass Filter in the Output of the Torque Estimator

c. Comparing the Two Proposed Solutions

III. COMPUTING THE TORQUE OF A REAL MOTOR

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Engineering, electrical, mechanical , ,

Testbed for Technology Characterization

May 20th, 2010

CHAPTER 1 INTRODUCTION

Section 1.1 Defining Characteristics of Technologies

Section 1.2 Premise of the STEEP program and the XChips

Section 1.3 Tunneling Device Introduction

CHAPTER 2 TEST STRUCTURES AND METHODS EXPLORED

Section 2.1 Individual Transistors

Section 2.2 Ring Oscillator

Section 2.3 Rapid Characterization of Threshold Variation

Section 2.4 SRAM Bitcell

Section 2.5 SRAM March Tests

CHAPTER 3 NOVEL MODIFICATIONS AND IMPROVEMENTS

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Engineering, mechanical ,