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2023　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(M-B43(H106))  Thr1-2(M-B43(H106))  
Group
-
Course number
EEE.P351
Credits
2
Academic year
2023
Offered quarter
3Q
Syllabus updated
2023/7/26
Lecture notes updated
-
Language used
Japanese
Access Index

Course description and aims

Electrical equipment design is a subject that embodies the economical and rapid fabrication of equipment with performance that meets the intended use. Since more than half of the world's electrical energy is consumed through electrical equipment, high energy efficiency is required in the design of electrical equipment from an environmental perspective. To achieve this, in addition to the electrical knowledge of electromagnetism and electrical equipment that students have already learned, knowledge of heat transfer engineering, fluid engineering, material mechanics, and other non-electrical knowledge and knowledge of electrical equipment fabrication are required. Therefore, in this lecture, students will first learn the fundamentals of electrical equipment, including structure, fabrication methods, material selection, cooling methods, temperature calculations, and magnetic circuit calculations. After that, students learn design methods of single-phase transformers and induction motors as examples of stationary equipment and rotating machines, and practice designing them. Finally, students learn the basics of drafting, aiming to understand the contents of drawings actually used in practice.

Student learning outcomes

In this lecture, the following points will be covered in terms of design and drawing of various types of electrical equipment.
1) To be able to explain basic structures, materials used, and operating principles of transformers and rotating machines from the viewpoint of design.
2) To be able to explain technical matters (heat transfer, mechanical strength, ventilation, etc.) other than electrical systems that are necessary in the design of electrical equipment.
2) Explain technical matters other than electrical systems (heat transfer, mechanical strength, ventilation, etc.) required in electrical equipment design.
3) To be able to perform practical basic design of single-phase transformers and induction machines.
4) Understand the basics of drafting and be able to read basic drawings.

Course taught by instructors with work experience

✔ Applicable How instructors' work experience benefits the course
The lecturer has practical experience in designing and developing induction motors and special motors, and there are many areas where practical experience is used in the lectures on this subject.

Keywords

Electrical equipment, induction motors, transformers, electromagnetic field analysis, drafting

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

Using the textbook and materials to be distributed separately, the course will cover the fundamentals necessary for electrical equipment design, actual design methods, basic drafting, and the latest technologies for improving performance and miniaturization of equipment using numerical analysis, either in person or in an online lecture format using ZOOM.
In the 8th lecture (Design of Transformers) and 13th lecture (Design of Induction Motors), students will be required to design transformers and induction motors, submit reports, and make presentations and discussions.

Course schedule/Required learning

  Course schedule Required learning
Class 1 Class Guidance and Introduction to Electrical Equipment Design History and classification of electrical equipment, flow of electrical equipment design, and what is required of designers Requirements in electrical equipment design (specifications, standards, legal regulations) Understanding of electrical equipment design and requirements
Class 2 Materials used in electrical equipment and required characteristics (conductive materials, magnetic materials, insulating materials, etc.) Understanding the characteristics of materials for electrical equipment.
Class 3 Fundamentals of heat transfer, temperature calculation and cooling methods for electrical equipment. Understanding the fundamentals of heat transfer.
Class 4 Induced electromotive force and electrical equipment windings (types, construction, fabrication methods, materials used) Understanding Electrical Equipment Winding
Class 5 Magnetic Circuits and Reactance Concept of calculating magnetomotive force of electrical equipment, types of leakage reactance and calculation methodology Understanding of magnetic circuits
Class 6 Losses and Efficiency Types of losses, principles of occurrence and influencing factors, calculation methods and definition of efficiency Understanding efficiency and mechanical constraints
Class 7 Determination of Electrical Equipment Dimensions Basic concept of electrical loading, magnetic loading and determination of electrical equipment dimensions Transformer Design Determination of stator core dimensions and winding configuration of a single-phase transformer Interim assignment Understanding Electrical Equipment Dimensioning Methods Understanding of transformer design
Class 8 Transformer Design: Presentation and Discussion of Interim Assignments. Understanding of transformer design
Class 9 Mechanical Constraints on Rotating Machines and Induction Machine Design (1)　 Mechanical Constraints in Rotating Machine Design Basic Characteristics of Induction Machines Overview of Induction Machine Design Methodology Determination of Stator Core Size Explanation of final assignment Understanding of induction motor design
Class 10 Induction Machine Design (2) Determination of number of slots and stator winding configuration Understanding of induction motor design
Class 11 Induction Machine Design (3) Calculation of stator winding temperature Determination of stator iron core dimensions and design of magnetic circuit Understanding of induction motor design
Class 12 Induction Machine Design (4) Determination of Rotor Core Dimensions and Magnetic Circuit Design Determination of induction machine winding specifications Calculation of characteristic curve Calculation of rotor winding temperature Calculation of each loss and efficiency Understanding of induction motor design
Class 13 Induction Motor Design: Presentation and Discussion of Final Assignment. Understanding of induction motor design
Class 14 Basic drafting and analysis techniques in electrical equipment design Understanding of drafting and analysis techniques
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)

Keiichi Hirose and Hideo Sumitani, "The Institute of Electrical Engineers of Japan University Lectures, Introduction to Electric Design (4th edition revised)," Ohmsha (ISBN 978-4-88686-262-4)

Reference books, course materials, etc.

Materials other than the textbook will be distributed and disclosed separately.

Assessment criteria and methods

Evaluation will be based on class attendance, transformer design report and presentation (50%), and induction motor design report and presentation (50%).

Related courses

  • EEE.P301 ： Electric Machinery

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

It is recommended that students take Electrical and Electronic Equipment Engineering.

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