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ELECTRIC MACHINES

Walter ZAMBONI ELECTRIC MACHINES

0623300008
DEPARTMENT OF INFORMATION AND ELECTRICAL ENGINEERING AND APPLIED MATHEMATICS
EQF7
ELECTRICAL ENGINEERING FOR DIGITAL ENERGY
2024/2025

OBBLIGATORIO
YEAR OF COURSE 1
YEAR OF DIDACTIC SYSTEM 2023
SPRING SEMESTER
CFUHOURSACTIVITY
432LESSONS
324EXERCISES
216LAB
WALTER ZAMBONI T Curriculum
GIOVANNI SPAGNUOLO Curriculum
Objectives
L’INSEGNAMENTO FORNISCE CONOSCENZE TEORICHE SUL FUNZIONAMENTO DELLE MACCHINE ELETTRICHE STATICHE E ROTANTI; METODOLOGIE PER LA MODELLAZIONE E LA REGOLAZIONE DELLE MACCHINE ELETTRICHE E PER LO STUDIO DEI CIRCUITI TRIFASE.
CONOSCENZE E COMPRENSIONE
MATERIALI E CIRCUITI MAGNETICI. MODELLI E CARATTERISTICHE DELLE PRINCIPALI MACCHINE ELETTRICHE STATICHE E ROTANTI: TRASFORMATORE; MACCHINA ASINCRONA, SINCRONA E A COLLETTORE; MACCHINE A MAGNETI PERMANENTI. REGOLAZIONE DELLA COPPIA, DELLA VELOCITÀ E DELLA POTENZA DI MACCHINE ELETTRICHE. SELEZIONE DELLE MACCHINE ELETTRICHE E RELATIVO SISTEMA DI REGOLAZIONE IN FUNZIONE DELL’APPLICAZIONE.
CAPACITÀ DI APPLICARE CONOSCENZE E COMPRENSIONE
ANALIZZARE IL FUNZIONAMENTO DELLE MACCHINE ELETTRICHE ATTRAVERSO IL LORO MODELLO CIRCUITALE. DETERMINARE IL COMPORTAMENTO DI UNA MACCHINA ELETTRICA IN FUNZIONE DELLA MODALITÀ DI REGOLAZIONE. SCEGLIERE LA MODALITÀ DI CONNESSIONE DELLA MACCHINA ELETTRICA ALLA RETE E VALUTARNE LE PRESTAZIONI. DEFINIRE LE SPECIFICHE DELLE MACCHINE ELETTRICHE IN FUNZIONE DELL’APPLICAZIONE.
Prerequisites
FOR THE SUCCESSFUL ACHIEVEMENT OF THE GOALS, A BASIC KNOWLEDGE OF STATIC AND QUASI-STATIC ELECTROMAGNETICS, CIRCUIT THEORY AND ELEMENTS OF MECHANICS ARE USEFUL.
Contents
TEACHING UNIT (UD) 1: GENERALITIES
(LECTURES/PRACTICE HRS.: 6/2)
11. TRANSFORMERS AND ELECTRIC MACHINES (EM). CONDUCTING, INSULATING AND MAGNETIC MATERIALS. (2/0)
12. ENERGY CONVERSION. ELECTROMAGNETIC TORQUE. PASSIVE AND ACTIVE ROTOR EM. FIX MAGNETIC FIELD EM. (2/0)
13. TRAVELING FIELD EM. LINEAR EM. FLUX-MODULATION EM. (2/0)
14. LOSSES AND EFFICIENCY. NAMEPLATE RATINGS. METHODS OF ANALYSIS. (0/2)

UD2: TRANSFORMER (L/P HRS: 12/6)
21. SINGLE-PHASE TRANSFORMER. OPERATING PRINCIPLE. (2/0)
22. MODEL AND EQUIVALENT CIRCUIT, STEADY-STATE MODEL. (2/0)
23. EXTERNAL CHARACTERISTIC, EFFICIENCY, PARAMETER (2/0).
24. IDENTIFICATION, NO-LOAD AND SHORT-CIRCUIT BEHAVIOR, COMPONENTS. (1/1)
25. PARALLELING TRANSFORMERS. (0/2)
26. THREE-PHASE TRANSFORMER. COMPONENTS, GRAPHICAL SYMBOLS, EQUIVALENT CIRCUITS. (2/0)
27. BALANCED AND UNBALANCED LOAD, NO LOAD AND SHORT-CIRCUIT BEHAVIOR, PARALLELING. (1/1)
28. AUTOTRANSFORMERS. APPLICATIONS. COOLING. TRANSIENTS IN TRANSFORMERS. INSTRUMENT TRANSFORMERS. (2/0)
29. LABORATORY PRACTICE.

UD3: INDUCTION MACHINE (L/P HRS: 12/6)
31. INDUCTION MACHINE. APPLICATION AND TOPOLOGIES. WINDINGS AND TRAVELING MAGNETIC FIELDS, POLES. (2/0)
32. THREE-PHASE WINDINGS, ARMATURE WINDINGS, LEAKAGE FLUX, CONSTRUCTION ELEMENTS. (2/0)
33. THREE-PHASE INDUCTION MACHINE. ROTOR WINDINGS, WOUND ROTOR, CAGE ROTOR, ROTOR FIELDS. MODEL AND EQUIVALENT CIRCUIT. LINKED FLUX AND INDUCED VOLTAGES, EQUILIBRIUM. (1/1)
34. ELECTROMAGNETIC TORQUE, TIME-DOMAIN MODEL, STEADY-STATE MODEL, EQUIVALENT CIRCUITS. NO-LOAD AND ZERO-SPEED OPERATION. (2/0)
35. STEADY-STATE OPERATION, RATED VALUES, MOTOR, GENERATOR, BRAKER OPERATION. (1/1)
36. STARTING METHODS. SPEED CONTROL METHODS. (2/0)
37. NUMERICAL PRACTICE (0/2)
38. INDUCTION MOTOR UNDER UNBALANCED OR HARMONIC VOLTAGE SUPPLY, HARMONIC FIELDS, TORQUE. (2/0)
39. LABORATORY PRACTICE. (0/2)

UD4: SYNCHRONOUS AND PM MACHINES (L/P HRS: 7/5)
41. SYNCHRONOUS MACHINE. APPLICATIONS AND TOPOLOGIES. STATOR WINDINGS. ROTORS: AIRGAP FLUX DENSITY AND ELECTROMOTIVE FORCE. (2/0)
42. OPERATING PRINCIPLE VIA GENERATOR MODE. ARMATURE REACTION AND MAGNETIZATION REACTANCES. SYMMETRIC STEADY STATE. (1/1)
43. AUTONOMOUS AND POWER GRID SYNCHRONOUS GENERATORS (SG). BASIC STATIC AND DYNAMIC STABILITY. UNBALANCED LOAD. LARGE SYNCHRONOUS MOTORS (SM). (1/1)
44. PM SM. LOAD TORQUE PULSATION HANDLING WITH SG. ASYNCHRONOUS STARTING. (2/0)
45. SINGLE-PHASE AND SPLIT-PHASE CAPACITOR PM SM. (1/1)
46. LABORATORY PRACTICE. (0/2)

UD5: BRUSH-COMMUTATOR MACHINE (L/P HRS: 9/7)
51. BRUSH-COMMUTATOR MACHINES. STATOR AND ROTOR CONSTRUCTION ELEMENTS, ARMATURE WINDINGS. BRUSH COMMUTATOR. AIRGAP FLUX DENSITY. PERMANENT MAGNET (PM) AIRGAP FLUX DENSITY AND ARMATURE REACTION. (2/0)
52. COMMUTATION PROCESS, ELECTROMOTIVE FORCE. (2/0)
53. MODEL AND EQUIVALENT CIRCUIT (1/1)
54. EXCITATION CONNECTIONS. DC BRUSH MACHINE. SEPARATE OR PM EXCITATION. STEADY-STATE AND MOTOR SPEED CONTROL. SERIES MOTOR. (2/0)
55. AC SERIES UNIVERSAL MOTOR. (1/1)
TESTING BRUSH-COMMUTATOR MACHINES. (1/1)
57. LABORATORY PRACTICE. (0/2)
58. NUMERICAL PRACTICE ON ROTATING MACHINES. (0/2)



Teaching Methods
THE COURSE INCLUDES CLASSROOM LECTURES (ABOUT 60%), CLASSROOM AND LABORATORY PRACTICE, AND TECHNICAL VISITS (ABOUT 40%).
DURING LECTURES, THE INSTRUCTOR INTERACTS WITH ALL STUDENTS KEEPING THEM INVOLVED IN THE DEVELOPMENT OF THEORY, CHECKING THEIR COMPREHENSION.
DURING CLASSROOM EXERCISES, EXAMPLES OF THE THEORY AND METHODS ARE DISCUSSED. THE STUDENTS ARE INVITED TO SOLVE ASSIGNED EXERCISES UNDER THE GUIDANCE OF THE LECTURER.
IN LABORATORY PRACTICE, STUDENT WILL MAKE EXPERIMENTAL TESTS ON LOW-POWER MACHINES AND/OR WITH THE HELP OF A PC.
FRONTAL LESSONS ARE PROVIDED. ENGLISH IS THE OFFICIAL LANGUAGE. ATTENDING LECTURES AND CLASSROOM PRACTICE (MIN=70%) IS MANDATORY.
Verification of learning
THE FINAL EXAM IS AIMED AT EVALUATING: THE KNOWLEDGE AND UNDERSTANDING OF THE CONCEPTS PRESENTED DURING THE COURSE, THE ABILITY TO APPLY THAT KNOWLEDGE TO SOLVE PROBLEMS OF ANALYSIS AND SELECTION OF ELECTRIC MACHINES, THE ABILITY OF MAKING JUDGEMENT, THE COMMUNICATION SKILLS AND THE LEARNING ABILITIES.
THE FINAL EXAM CONSISTS OF A PRACTICAL TEST AND AN ORAL INTERVIEW. THE PRACTICAL TEST CONSISTS IN THE ANALYSIS OF ONE OR MORE ELECTRIC MACHINES PROBLEMS, ALSO ASSISTED BY COMPUTATIONAL AND SIMULATION SOFTWARE. THE EXERCISES CAN BE FORMALIZED AS A PRE-EVALUATED TEST DEVELOPED THROUGH THE UNIVERSITY E-LEARNING PLATFORM.
THE TOPICS OF THE PRACTICAL TEST INCLUDE THE ANALYSIS OF A PROBLEM OF ELECTROMECHANICS IN THE PRESENCE OF AN ELECTRIC MACHINE OR A TRANSFORMER THROUGH A CIRCUIT MODEL, THE SIZING AND THE SELECTION OF AN ELECTRIC MACHINE FOR A SPECIFIC APPLICATION.
EXAMPLES OF PRACTICAL TESTS WILL BE SHARED THROUGH THE WEBPAGE OF THE COURSE.
THE SCOPE OF THE WRITTEN TEST IS TO ASSESS THE ABILITY TO APPLY THE ACQUIRED KNOWLEDGE, THE ABILITY TO FORMALIZE AND SOLVE A PROBLEM, THE ABILITY OF MAKING JUDGMENT. THE WRITTEN TEST WILL BE EVALUATED BASED ON THE CORRECTNESS OF THE APPROACH AND RESULTS.
FOR THE PRACTICAL TEST THE FOLLOWING SCALE WILL BE ADOPTED: A=EXCELLENT, B=GOOD, C=FAIR, D=ACCEPTABLE +, E=ACCEPTABLE; F=FAIL. A MINIMUM MARK OF E=ACCEPTABLE IS NEEDED TO ACCESS THE ORAL TEST. THE ORAL INTERVIEW IS AIMED TO ASSESS THE ABILITY AND THE QUALITY OF ORAL EXPOSITION, THE ABILITY TO DEFEND AND CRITICALLY DISCUSS THE ACTIONS AND CHOICES PROPOSED IN THE PRACTICAL TEST, AND WILL ALSO DEAL WITH ALL THE TOPICS PRESENTED DURING THE COURSE.
THE EVALUATION TAKES INTO ACCOUNT THE KNOWLEDGE DEMONSTRATED BY THE STUDENT, THE LEARNING SKILLS, THE QUALITY OF THE EXPOSITION, THE QUALITY OF THE PRESENTED REPORT. THE FINAL RESULT IS MARKED OUT OF THIRTIES. MARKS=18 IS GIVEN TO STUDENTS DEMONSTRATING VERY LIMITED BUT SUFFICIENT KNOWLEDGE AND APPLICATION SKILLS.
MARKS=30 CAN BE GIVEN TO STUDENTS SHOWING A COMPLETE KNOWLEDGE OF METHODS, TECHNIQUES AND CONCEPTS PRESENTED, LINK THEM ONE ANOTHER, DEMONSTRATING A VERY EFFECTIVE APPROACH TO PROBLEM SOLVING AND ABLE TO FIND ACCURATE SOLUTIONS.
HONORS (30 E LODE) CAN BE GIVEN TO STUDENTS DEMONSTRATING THEY CAN APPLY THE ACQUIRED KNOWLEDGE WITH CONSIDERABLE AUTONOMY AND CRITICAL JUDGMENT.
Texts
TEXTBOOK
- ION BOLDEA, LUCIAN N. TUTELEA, ELECTRIC MACHINES: STEADY STATE PERFORMANCE WITH MATLAB, CRC PRESS, 2021.
- MATERIALE DIDATTICO DISPONIBILE NELL'AREA RISERVATA AL CORSO DEL PORTALE DI E-LEARNING DI ATENEO ELEARNING.UNISA.IT (ACCESSO CON CAU DI ATENEO)

FURTHER REFERENCES
- KUSKO, FITZGERALD, KINGSLEY, MACCHINE ELETTRICHE, FRANCO ANGELI
- ION BOLDEA, LUCIAN N. TUTELEA, ELECTRIC MACHINES: TRANSIENTS, CONTROL PRINCIPLES, FINITE ELEMENT ANALYSIS AND OPTIMAL DESIGN WITH MATLAB, CRC PRESS, 2021. ISBN 9780367375621
More Information
LEARNING LANGUAGE IS ENGLISH.
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