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Macchine e Reti Elettriche
Electric Machines and Networks
Stefano Squartini

Seat Ingegneria
A.A. 2016/2017
Credits 9
Hours 72
Period II
Language ENG

Prerequisites
Linear Algebra, Mathematics, Physics

Learning outcomes
KNOWLEDGE AND UNDERSTANDING:
To know and understand the fundamentals of Circuit Theory and Electrical Machines, and the related applications within the Mechanical Engineering field. In particular, the student is required to know the main concepts of electrical and magnetic circuits, the issues of electrical energy delivery and usage, also from the security perspective, and finally the characteristics and way of working of static and dynamical electrical machines, with special focus on transformers, asynchronous/synchronous/DC machines
CAPACITY TO APPLY KNOWLEDGE AND UNDERSTANDING:
Capability to analyse the properties and functional characteristics of electrical circuits composing a complex mechanical system, taking the security issues into account, and to select a suitable electrical machine for a simple mechanical engineering application
TRANSVERSAL SKILLS:
The studying activities in this course will allow the student improving its ability in correctly evaluating the effectiveness, the efficiency and the suitability of a design choice, and, at the same time, to estimate the economic costs and the security risks, in the light of the related standards and regulations

Program
INTRODUCTION TO ELECTRICAL CIRCUITS LPC CIRCUIT THEORY TIME-DOMAIN CIRCUIT ANALYSIS LAPLACE-DOMAIN CIRCUIT ANALYSIS STEADY-STATE CIRCUIT ANALYSIS POWER AND ENERGY ANALYSIS 1-PHASE AND 3-PHASE ELECTRICAL CIRCUITS ELECTRICAL POWER DISTRIBUTION AND SECURITY MAGNETIC CIRCUITS 1-PHASE AND 1-PHASE TRANSFORMERS ASYNCRONOUS MOTORS AND GENERATORS SYNCRONOUS MOTORS AND GENERATORS DC ELECTRICAL MACHINES

Development of the examination
LEARNING EVALUATION METHODS
The exam consists of 2 parts. In the first the student is asked to give written answers to 4 questions on the first 7 topics of the program, in the second to give written answers to 4 questions on the last 6 topics of the program. 1 hour and 30 minutes are given to the students to provide their answer for each part. The two tests can be sit by the students in two distinct sessions, and the second one has to be taken on within the two sessions following the one in which the first test has been passed. Further oral questions can be optionally made by the teacher to integrate the final examination grade.

LEARNING EVALUATION CRITERIA
For each test, the students have to show a sufficient knowledge of the corresponding arguments, for at least 3 out of the 4 proposed questions, and an adequate ability in presenting what the student knows in relationship to the test questions.

LEARNING MEASUREMENT CRITERIA
During the tests, the comprehension and analysis capability of the properties and functional characteristics of the circuits composing a complex electrical system and of electrical machines and networks, taking the electrical security issues into account, will be evaluated. Moreover, the ability to examine and assess the pros and cons of the electrical systems, studied during the lectures, when used in diverse applicative contexts will be also evaluated .

FINAL MARK ALLOCATION CRITERIA
For each test, a score within the 18-30 range is assigned. The minimum score required for each test is 16/30. The arithmetic average between the two scores is applied, with a rounding up strategy, and the result is proposed as final score for official registration. The maximum evaluation score is assigned to those students showing a deep knowledge of the theoretical contents of the course and a remarkable ability in applying those concepts to practical problems in the mechanical engineering field. The minimum score is assigned to students showing a sufficient degree of comprehension of the fundamentals of electrical circuit theory and electrical machines and networks, and of the related applicative issues.

Recommended reading
1- G. Martinelli, M. Salerno, “Fondamenti di Elettrotecnica“, seconda ed., Vol. I e II, Siderea 1996; 2- M. Guarnieri, A. Stella, ”Principi ed Applicazioni di Elettrotecnica”, Edizioni Progetto Padova, 1998-1999; 3- Teacher’s material available at the website https://lms.univpm.it/, and specifically at the pages related to this course.

Courses

• Ingegneria Meccanica (Corso di Laurea Magistrale (DM 270/04))