## Lecture Hours

- Tuesday 13:40-15:30, EA207
- Thursday, 10:40-11:30, EA207

## Tentative Weekly Outline

- Review of Magnetic Circuits
- Review of Electromechanical Energy Conversion
- Basic Principles of Electrical Machine Sizing
- Permanent Magnet Materials and Circuits
- Synchronous Machines
- Synchronous Reluctance Machines
- Brushless PM Motor Fundamentals
- Various Types of Permanent Magnet Machines
- Axial Flux Permanent Magnet Machines
- Direct-Drive PM Machines
- High speed air-cored machines

- Thermal Design
- Structural Design
- Control Methods and Coupled Design

## Brief Info:

This course covers basic design principles of electromechanical energy conversion, magnetic circuits and permanent magnets. Modern electric machine types such as permanent magnet (PM) machines, synchronous reluctance machines, axial flux machines, direct-drive machines will be covered. You will be able to design an electrical machine analytically and verify your designs using finite-element methods. Coupled design methods considering thermal and structural design will be also covered.

## Textbooks

- Brushless Permanent Magnet Motor Design, D. Hanselman
- Design of Brushless PM Machines, R. Handershot, T. J. E. Miller, Oxford University Press, 2010
- Design of Rotating Electrical Machines, Juha Pyrhonen, Tapani Jokinen, Valeria Hrabovcova, 2009

## Grading:

- 1st Project: 10%
- 2nd Project: 15%
- 3rd Project: 15%
- 4th Project: 20%
- Final: 30% (Open Book)
- Participation: 10%

## Presentations:

- Week#1: Review of Magnetic Circuits
- Week#2: Inductor Transformer Design
- Week#3: Review of Energy Conversion
- Week#5: Windings of Electrical Machines
- Week#7: Permanent Magnets

## Online References:

- Wiley Online Library: (browse using METU Library)
- Motor Engineer - Electric Machine Design
- Electric Machines - MIT
- Electric Machine Design - UoM

## Software

Here you can find a few useful software on electric machine design and FEA.

#### Free/Open-Source

- FEMM: 2D FEA Software
- xFEMM: A link between MATLAB and FEMM
- SMEKLib: An open-source MATLAB library for 2D-FEA Analysis of Electrical machines
- Syre - Synchronous reluctance machine design and optimization tool
- Emetor: A tool to calculate winding factors, harmonics etc
- Dolomites: An open source design tool
- Homebuilt electric motors: Tools for brushless PM motors

#### Commercial Products

- ANSYS Maxwell: METU has teaching license
- COMSOL
- Altair Flux: Flux, Portunus, Speed
- Opera FEA: 3D Electromagnetic, Thermal FEA (also models supercodnuctors)
- EMWorks
- MagNet, Mentor
- JMag
- Motor-Design: EM and lumped thermal analysis
- Quick Field: Free student edition