# AC Motors

## AC Motors

**Eectrical machines & drive control course**

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**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**

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**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**

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**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**

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**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**

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**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**

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**10- Special machines**

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

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**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**

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**2- Simulation of Classic control**

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**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**

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**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**