# Special Electrical Machines

Course Code:ULZ0189

Author:uLektz

University:

Regulation:2017

Categories:Electrical & Electronics

Format : ePUB3 (DRM Protected)

Type :eBook

Rs.199 Rs.30 Rs.85% off

Description :Special Electrical Machines of ULZ0189 covers the latest syllabus prescribed by General for All University for regulation 2017. Author: uLektz, Published by uLektz Learning Solutions Private Limited.

Note : No printed book. Only ebook. Access eBook using uLektz apps for Android, iOS and Windows Desktop PC.

##### Topics
###### UNIT I SYNCHRONOUS RELUCTANCE MOTORS

1.1 Constructional features - Types - Axial and Radial flux motors - Operating principles

1.2 Variable Reluctance and Hybrid Motors

1.3 SYNREL Motors

1.4 Voltage and Torque Equations- Phasor diagram

1.6 Characteristics

###### UNIT II STEPPER MOTORS

2.1 Constructional features - Principle of operation

2.2 Variable reluctance motor

2.3 Hybrid motor

2.4 Single stack and Multi stack configurations

2.5 Torque equations

2.6 Modes of excitation

2.7 Characteristics

2.8 Drive circuits

2.9 Microprocessor control of stepper motors - Closed loop control

2.10 Stepper motor close loop mode

###### UNIT III SWITCHED RELUCTANCE MOTORS (SRM)

3.1 Constructional features

3.2 Rotary and Linear SRM - Principle of operation - Torque production

3.4 Analytical method

3.5 Power Converters and their controllers

3.6 Methods of Rotor position sensing

3.7 Sensorless operation

3.8 Closed loop control of SRM - Characteristics

3.9 Characteristics

###### UNIT IV PERMANENT MAGNET BRUSHLESS D.C. MOTORS

4.1 Permanent Magnet materials - Magnetic Characteristics

4.2 Permeance coefficient

4.3 Principle of operation

4.4 Types

4.5 Magnetic circuit analysis

4.6 EMF and torque equations

4.7 Commutation

4.8 Power controllers

4.9 Motor characteristics and control

###### UNIT V PERMANENT MAGNET SYNCHRONOUS MOTORS (PMSM)

5.1 Principle of operation

5.2 Ideal PMSM - EMF and Torque equations

5.3 Armature reaction MMF - Synchronous Reactance

5.4 Sinewave motor with practical windings - Phasor diagram - Torque/speed characteristics

5.5 Power controllers

5.6 Converter Volt-ampere requirements