AC Motors

AC Motors

Eectrical machines & drive control course

 

Part 1: Electrical machines

Introduction and Concepts of magnetic circuits

1- Three phase induction motor

  • Construction and design
  • Equivalent circuit and parameters calculation and Tests
  • Types of 3ph IM (slip rings – squirrel cag – deep bar- double cage )
  • The motor characteristics for Power & torque _ speed& current _ speed
  • Starting methods
  • Speed control and Torque control
  • Winding rules
  • Electrical power recovery
  • Electrical braking of induction motor
  • 3 phase motor converted to single phase
  • power factor correction

 

2- Single phase Induction motors

  • Theory of work and Circuit analysis
  • Equivalent circuit
  • Capacitor run motor
  • Capacitor start motor
  • Capacitor start Capacitor run motor
  • Split phase motor
  • Shaded pole motor
  • 3ph winding for single phase motor
  • Starting and speed control and Torque control
  • Winding rules

 

3- Universal motor

Series universal motor

  • Construction and Applications
  • Examples
  • Speed control and Torque control

Differential universal motor

  • Theory of work
  • Construction and Applications

Schrage motor

  • Theory of work
  • Construction and Applications

4- Three phase induction Generator

  • Theory of work
  • Equivalent circuit and parameters calculation
  • Types of excitation for induction Generator

5- DC generators

  • Theory of working
  • Construction
  • Armature reaction and how it affects
  • Types of dc generators and methods of excitation
  • Electrical external curves
  • voltage regulation
  • Calculations and examples
  • Applications

 

6- DC motors

  • Theory of working
  • Construction
  • Electro motive force & torque equation
  • Types of dc motors
  • Speed and torque curves
  • Calculations and Applications
  • Starting & reverse direction
  • Speed control of dc motors
  • Electrical braking of dc motors

 

7- Synchronous Generators

  • Theory & construction
  • Equivalent circuit
  • Vector diagram and Tests
  • Voltage regulation and Power & torque
  • Parallel operation

8-Synchronous Motors

  • Theory & construction
  • Starting methods
  • Power factor with synchronous motor
  • Calculations of Power , torque and efficiency

9- Diesel Generator

  • Theory & construction
  • AVR
  • load sharing of generators
  • Maintenance of diesel generator

 

10- Special machines

  • Stepper motor
  • Tachogenerator
  • Servo motor
  • induction servo motors
  • Dc servo motors

 

 

Part 2 Classic Control 1-classic control component

  • switches
  • Relay and Contactor
  • Overload(thermal relay) and fuse
  • circuit breaker types
  • timers (on delay timer-off-delay timer)
  • limit switch
  • sensors

 

2- Simulation of Classic control

 

3- Classic control application (20 applications handwork )

  • Control circuits for DC motors
  • Control circuits for single phase motors
  • Control circuits for three phase motors
  • Forward and reserve for three phase motors
  • Control circuits (Delta/star ) three phase motors
  • Control circuits for Dahlander motors

 

Part 3 Drive system

  • Introduction
  • Drive system components
  • What is difference between inverter and a Soft Starter
  • What is difference between inverter and frequency converter
  • Block diagram of electric drive system
  • Calculations
  • Characteristic curves
  • How to read the motor correctly?
  • How to choose the drive type?
  • Choosing type of control and protections
  • Installation of the drive system
  • Wiring and connections
  • How to use digital inputs and analogue inputs to control the drive
  • How to have a feedback from the dive and to use it in other process
  • How to have a feedback from PLC
  • How to collect your calculations before programming start
  • Before you begin
  • Steps for setting up
  • Parameter setting method
  • Frequency Setting via keypad & operating via terminals
  • Basic Functions and Function list
  • Drive Group
  • Function group
  • I/O configuration
  • Inserting the motor data
  • Calculations and insertion of protection currents
  • Choosing direction of motion for forward and reverse directions
  • Motion curves of acceleration and deceleration
  • Motor control
  • Types of stopping
  • Ramp shape
  • Brake release and brake engage
  • Dc injection
  • High speed
  • more exercise for application on 3 phase induction motors
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