ElectromagneticDevices Design

Higher education teachers: Miljavec Damijan

Subject description

Prerequisits:

• Entered in third year of study, adequate knowledge of the basics of electrical engineering, mathematics and physics.

Content (Syllabus outline):

• Magnetic field , force and torque. Induced voltage. Heating of electrical machines. Heat Transfer. The use of modern computer tools based on the finite element method to calculate magnetic, electrostatic and thermal fields. Losses in the core, windings and additional losses in electric machines.
• Calculation of the core and windings of the transformer. Short circuit forces on transformer windings. Switch-on phenomenon in transformer. Different types of cooling systems. Basic tests of transformer. Atmospheric and switching over-voltages. Elements of power transformers protection.
• Forms of excitation windings of rotating machines. Calculation of the windings of synchronous machines. Design of synchronous machine magnetic circuit.
• Equivalent circuit of induction machine. Circle diagram of induction machine. Design of induction machine magnetic circuit.
• Direct current machine winding design. The problem of commutation. Design of direct current machine.

Objectives and competences:

Obtain detailed knowledge of the nature, design features and possibilities of the use of different types of electrical machines. The emphasis is on the practical knowledge that prospective designer and end user needs when selecting, sizing and use of electrical machines.

Intended learning outcomes:

The student will understand the physical quantities of magnetical, electrical and thermal fields with their applicability in the field of electrical machines. He will understand the basic problems in the production and use of each type of electric machine.

Learningandteachingmethods:

• Lectures, tutorials included in lectures and laboratory work.
• Laboratory exercises are with heightened risk (high voltage, rotating parts, ...).
• The course consists of 30 hours of lectures and 30 hours of laboratory exercises with heightened risk.

Study materials

Readings:

1. Scott D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach Wiley-Blackwell, 2014.
2. Juha Pyrhonen,Tapani Jokinen, Valeria Hrabovcova: Design of Rotating Electrical Machines, Wiley-Blackwell; 2nd Edition edition, 2013.
3. Austin Hughes, Bill Drury:Electric Motors and Drives: Fundamentals, Types and Applications, Newnes, 4th Revised edition edition, 2013
4. Nicola Bianchi, Electrical Machine Analysis Using Finite Elements, CRC Press, 2005
5. S.V. Kulkarni,S.A. Khaparde:Transformer Engineering: Design, Technology, and Diagnostics, CRC Press; 2 edition, 2012.
6. Stephen L. Herman: Electrical Transformers and Rotating Machines, Delmar Cengage Learning; 3rd Revised edition edition,2011.
7. Bharat Heavy Electrical Limited, Transformers: Design, Manufacturing, and Materials (Professional Engineering), McGraw-Hill Professional, 2004.