Principles of electric machines and transformers.
•Function of transformers, construction, equivalent circuit and operation; regulation, single- and three-phase connections, parallel operation; Auto-transformers.
•Underlying concepts and features of rotating machines, fundamental torque equation, rotating field principle, generated EMF, air-gap mmf and permeance;
•Concepts and features of linear machines, compare and contrast with rotating machines
•Construction of different types of electrical machines windings and winding factors, conductors and insulation systems.
Design of electric machines and specification of Drive Systems:
•Main steps of electrical machine design, considering electrical, mechanical and thermal limitations
•Mechanical transmission elements, gears, leadscrews, belts etc.
•Sizing algorithms.
•Integration of controllers into the drive package.
Alternating current machines
•Synchronous machines: output equation, armature reaction, phasor diagram, synchronous reactance, equivalent circuit, load angle
•Induction motors: equivalent circuit, analysis of machine equations, speed/torque curves, starting performance
•Single-phase AC motors: single phase induction motors, universal motors, permanent magnet and reluctance machines, and vector-controlled AC motor drives.
Direct current machines.
•Basic equations and steady-state characteristics, field form and armature reaction, commutation; brushless DC motors
The Drive Environment:
•Robotic and machine tool applications
•Introduction to position and speed control systems for AC and DC machines
•Dynamics and load characteristics, power transmission, environmental factors
•Determination of speed and torque requirements, motion profiles, installation considerations.
Operation of electric machines
•Synchronous machine on infinite busbars, generators and motor operation, power factor correction.
•Consideration of specific drives and their operating characteristics.
Testing of electric machines.
•Measurement of equivalent circuit parameters.