Preview Sensorless Control Techniques of the SRM Drive

Introduction

Course Promo

1.1 Course Introduction

1.2 Introduction to Sensorless Control of SRM

Flux Linkage Based Method

2.1 Introduction to Flux-linkage Based Rotor Position Estimation

2.2 Look-up Table Based Method

2.3 Summary of Look-up Table Based Method

2.4 Research Scope and Ideas

2.5 ANN Based Sensorless Method

2.6 Fixed Turn-off Angle Method

2.7 Analytical Method

2.8 Summary of Flux-linkage Based Sensorless Method

Current Gradient Sensorless Method (CGSM)

3.1 Features of Current Gradient Sensorless Method

3.2 Concept of Current Gradient Sensorless Method

3.3 Working Principle of Current Gradient Sensorless Method

3.4 Mathematical Representation of CGSM

3.5 Block Diagram of CGSM

3.6 Current Peak Detection Stage

3.7 Commutation Logic

3.8 Calculation of Resolution, Speed and Accuracy

Issues with CGSM

4.1 List of Issues with CGSM

4.2 Changeover Period

4.3 Effect of Stator Rotor Pole Arc

4.4 Delay in Peak Detection Pulse

4.5 Non-Synchronized PWM Pulse

4.6 Effect of Current Chopping Mode

4.7 Single Pulse Operation

4.8 Hysteresis Current Control Mode

4.9 Summary of Issues with CGSM

4.10 Scope of Work with CGSM

Comparison

5.1 Flux-linkage Based Method Vs CGSM

Introduction to Other Sensorless Methods

6.1 Introduction to Other Sensorless Methods

6.2 State Observer Based Method

6.3 Active Probing Method

6.4 Modulated Signal

6.5 Current Chopping Mthod

6.6 Regenerative Current Method

6.7 Initial Start-up Methods

Summary

7.1 Classifications of Sensorless Techniques