INTRODUCTION TO ELECTRICAL MACHINES
Stampa
Enrollment year
2018/2019
Academic year
2019/2020
Regulations
DM270
Academic discipline
ING-IND/32 (POWER ELECTRONIC CONVERTERS, ELECTRICAL MACHINES AND DRIVES)
Department
DEPARTMENT OF ELECTRICAL,COMPUTER AND BIOMEDICAL ENGINEERING
Course
INDUSTRIAL ENGINEERING
Curriculum
Meccanica
Year of study
Period
2nd semester (02/03/2020 - 12/06/2020)
ECTS
3
Lesson hours
27 lesson hours
Language
Italian
Activity type
WRITTEN TEST
Teacher
BENZI FRANCESCO (titolare) - 6 ECTS
Prerequisites
Basic knowledge of electrical engineering and circuit theory.
Learning outcomes
The course aims to provide the basic knowledge of electrical machines employed in industry and in electrical power systems. An namely: the thermal behaviour and types of service according to the standard; role of transformers and motors in industrial plants; knowledge of the operating principles and their sizing with respect to the relative loads.
Course contents
Electric machines for industrial applications
Role and features of electrical machines in industry and power systems. The materials used, the sources of loss, the relative thermal problems. Types of service and rated characteristics.
- Power transformers
Transformer operating principle. Ideal and real transformer. Three-phase transformers. Transformer equivalent circuit. Power, torque and efficiency.
- The induction machine
The rotating magnetic field. Operating principle of the induction machine. Operation as a motor. Equivalent circuit of the induction machine. Mechanical and current characteristics. Starting techniques.

ONLY FOR THE STUDENTS IN ENERGY.
- Single-phase asynchronous machine.
- Speed regulation.
Notes on the variable frequency power supply of the induction machine and the flux constant speed regulation.
Teaching methods
Two-thirds of lectures. A third of numerical exercises.
Reccomended or required readings
The lecture notes and numerous numerical exercises with solutions are made available by the teacher through the Kiro platform.
Assessment methods
A written test, consisting consists of a numerical resolution of one or more exercises. Possible oral integration at the request of the student.
Further information
Sustainable development goals - Agenda 2030