# ELECTRICAL MACHINERY AND ELECTRICAL DRIVES cod. 14898

1° year of course -
Professor
- Andrea TOSCANI
Convertitori, macchine e azionamenti elettrici (ING-IND/32)
Field
Attività formative affini o integrative
Type of training activity
Related/supplementary
48 hours
of face-to-face activities
6 credits
hub: PARMA
course unit
in ITALIAN

## Learning objectives

The course provides the basic knowledge required for the usage of the most common electrical machine and electric drives.

## Prerequisites

The students are expected to be familiar with the notions of mathematics, physics, electrical and electronic circuits taught in the 1st level degree in Mechanical Engineering.

## Course unit content

a) An Introduction to Electric machines
b) Transformers
c) Rotating machines
d) Electric Drives

## Full programme

a) An Introduction to Electric machines
Electric machines classification. The main components of the electric
machines.
Joule losses and iron losses: the efficiency of the electrical machines.

b) Transformers
Ideal transformer and real transformer.
Voltage drop, power, losses and efficiency of electrical transformer. Three phases transformers.

c) Rotating machines
Induction machines: mechanical and electrical behaviour. Induction motor start-up and velocity regulation.
Direct Current machines: electrical and mechanical behaviour, start-up and velocity regulation.
Permanet Magnet Synchronous Machines (PMSM): a.c. and d.c. PMSM, electrical and mechanical behaviour.
Permanet magnet step motor, reluctance step motor and hybrid step motor.
Electric Drives classification.

d) Electric Drives
The main components of electric drives: speed and position transducers, current transducers. Analog and digital PID regulators, PLC.
Electric drives based on permanent dc motors: torque control and velocity control.
DC motor supply: soft switching chopper.
Electric drives based on PMSM: torque control and velocity control. Electric drives based on induction motors: torque and speed control. Incremental electrical drives: basic stepping motor control circuits.

## Bibliography

E.Bassi, A.Bossi “Macchine e Azionamenti Elettrici” UTET, Milano ISBN: 88-7933-184-1
Lecture notes

## Teaching methods

Classroom lectures and exercises solved by the instructor and by students. Some lectures use slides available to students for downloading.

## Assessment methods and criteria

Oral exam. There is a single exam for the two modules making up the integrated course.

## Other information

Slides and other supporting material available on the Elly platform.