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2022　Design and Drawing of Electric Machine

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Academic unit or major
Undergraduate major in Electrical and Electronic Engineering
Instructor(s)
Obata Takeshi 
Class Format
Lecture / Exercise    (Face-to-face)
Media-enhanced courses
Day/Period(Room No.)
Mon1-2(H106)  Thr1-2(H106)  
Group
-
Course number
EEE.P351
Credits
2
Academic year
2022
Offered quarter
3Q
Syllabus updated
2022/4/20
Lecture notes updated
-
Language used
Japanese
Access Index

Course description and aims

Electrical equipment design is a subject that embodies the ability to produce equipment of the performance that is appropriate for use economically and in a short period of time. Because more than half of the world's electrical energy is consumed through electrical equipment, electrical equipment design requires high energy efficiency from environmental considerations. In order to achieve this, it is required to know not only the knowledge already-studied in electrical engineering, such as electromagnetism and electrical machines, but also other knowledge in thermal and fluid dynamics, material mechanics, and so on. Therefore, at first, this course teaches the fundamental contents such as electric machine structures, manufacturing process, material selection, cooling technique, thermal estimation, magnetic characteristics, and so on. After that, it also provides the design procedures and exercises of single-phase transformers and induction motor as the examples of stationary and rotating machines. Finally, the fundamentals of technical drawings will be presented for the students to understand the design intent in design drawings and circuit diagrams.

Student learning outcomes

The aim of this course is to have the following abilities:
1) To understand and explain the basic structures, materials, and principles of electric machines from the design point of view.
2) To understand and explain not only electrical theories but also heat transfer, mechanical strength, ventilation, and so on regarding electric machine design.
3) To perform a practical design regarding single-phase transformers and induction motors.
4) To interpret design drawings and circuit diagrams with understanding the fundamentals in technical drawing.

Course taught by instructors with work experience

✔ Applicable How instructors' work experience benefits the course
The lecturer has rich experiences in designing and developing induction motors and special motors, thus, his experiences will enhance this lecture in many subjects.

Keywords

Electric machines, induction motors, transformers, electromagnetic analysis, and technical drawing.

Competencies that will be developed

Specialist skills Intercultural skills Communication skills ✔ Critical thinking skills Practical and/or problem-solving skills
✔ ・Applied specialist skills on EEE

Class flow

This course presents the fundamentals required to the electric machine design, practical design procedures, basic technical drawings, new technology for high-performance and miniaturized electric machines using numerical analysis, using textbooks and other materials for distribution. And a lecture style will be face to face or ZOOM. After the completion of the 9th lecture (design of Transformers) and the 13th lecture (Induction machine design), the design of transformers and induction motors is carried out and requested to be submitted in the form of reports.

Course schedule/Required learning

  Course schedule Required learning
Class 1 Guidance of class and introduction to electrical equipment design History and classification of electrical equipment, the flow of electrical equipment design, required by the designer Requirements for electrical equipment design (specifications, standards, legal regulations) Understanding of electric machine design and requirements
Class 2 Basic structure, parts name and production method of electrical equipment (rotary machines and Transformers) Understanding the basic structure of electrical equipment
Class 3 Materials used in electrical equipment and required properties (conductive materials, magnetic materials, insulating materials, etc.) Understanding the characteristics of materials for electrical equipment
Class 4 Heat transfer fundamentals, electrical equipment temperature calculation and cooling system Understanding the fundamentals of heat transfer
Class 5 Induction electromotive force and electrical equipment winding (type, structure, manufacturing method, materials used) Understanding Electrical Equipment Winding
Class 6 Magnetic Circuits and Reactance The concept of electric power calculation, type of leakage reactance and calculation method Understanding of magnetic circuit
Class 7 Losses, efficiency Understanding efficiency and mechanical constraints
Class 8 Determine Electrical device dimensions Basic idea of the determination of physique of electric loading, magnetic loading and electrical equipment Understanding how to determine the dimensions of electrical equipment
Class 9 Transformer design Determination of stator core dimensions and winding configuration of single-phase transformers Understanding of transformer design
Class 10 Mechanical constraints of rotating machines and induction motors design (1)　 　Mechanical restrictions in rotating machine design Basic characteristics of induction motors Outline of induction motor design method Determination of the stator core physique Understanding of induction motor design
Class 11 Induction motor Design (2) Determining the number of slots and stator winding configuration Understanding of induction motor design
Class 12 Induction motor Design (3) Calculation of stator winding temperature Determination of stator core specifications and design of magnetic circuits Understanding of induction motor design
Class 13 Induction motor Design (4) Determination of rotor core specifications and design of magnetic circuits Determination of winding specifications of induction motor Calculation of characteristic curves Calculation of rotor winding temperature Calculation of each loss and efficiency Understanding of induction motor design
Class 14 Fundamental of technical drawing and analysis technology for electrical machine design Understanding of technical drawing and analysis technology
Class 15 X X

Out-of-Class Study Time (Preparation and Review)

To enhance effective learning, students are encouraged to spend a certain length of time outside of class on preparation and review (including for assignments), as specified by the Tokyo Institute of Technology Rules on Undergraduate Learning (東京工業大学学修規程) and the Tokyo Institute of Technology Rules on Graduate Learning (東京工業大学大学院学修規程), for each class.
They should do so by referring to textbooks and other course material.

Textbook(s)

Keichi Hirose, Hideo Sumitani, Ohmsya, (ISBN 978-4-88686-262-4)

Reference books, course materials, etc.

Some required documents will be distributed in the class, except for the textbook.

Assessment criteria and methods

Grading depends on reports designing a transformer (20%) and an induction motor (80%).

Related courses

  • EEE.P301 ： Electric Machinery

Prerequisites (i.e., required knowledge, skills, courses, etc.)

It is better to complete the Electric Machinery class.

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