EE564 Design of Electrical Machines

Lecture Hours

Brief Info:

This course covers basic design principles of electrical machines. You will be able to design main parameters of an electric machine such as magnetic and electric loading, number of slots, winding dimensions. Thermal and structural design of electric machines will be also covered. You will use FEA software and optimization tools to determine the best parameters.

Textbooks

Grading:

Presentations:

Project Assignments

For details of the projects, please visit the GitHub page

Online References:

Software

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

Free/Open-Source

Commercial Products

The content below this line will be changed this semester

Presentation Topics

To be modified:

Please choose one topic from below, and fill in the online spreadsheet to book your topic and date. One topic should be presented only once. First-come first served.

The full guidelines are given at the end of this page.

Third Project Topics (Deadline:15/06)

The main idea of this project is to get you familiar with FEA (finite element analysis) methods. You have the following options:

A- Modelling Your 2nd Project Designs in FEA

You are supposed to model the induction machines you designed in the 2nd projects. You are free to use any FEA software, but I advise you to use Maxwell. The outputs of the projects are as follows:

B- Direct-Drive PM Generator Design

If you are tired of designing induction machines, you have another option: to design a direct-drive permanent magnet generator for a wind turbine. Here are the specifications:

C- BMW i3 Synchronous Reluctance Motor Design

You are supposed to design a synchronous reluctance motror for the BMW i3, which is a full-electric car with a hybrid-synchronous motor. Although the motor is rated at 75 kW, it can produce instantaneous power up to 125 kW, and torque up to 250 Nm. Although the original motor is PM assisted, you can design a classical synchronous reluctance motor. You are free to use any software, but I personally advise you to use SYRE. Here are some useful links:

Other remarks for the 3rd projects:

Second Project Topics (Deadline:11/05)

In this projects you are supposed to design an induction motor (the options are given below). In this project you will use Motor Analysis, a MATLAB GUI for induction motor design. Please spend some time to learn the software and read the documentation.

Here are the projects:

A- Design of a Train Traction Motor

The motor you need to design is a traction asynchronous squirrel cage induction motor with the following specifications:

B- Tesla Model S Induction Motor

Design the induction motor that is used in Tesla Model S, which has a few different variations. To keep things simple, use the RWD 85 Model, with rear wheel drive, which has the following specs:

You can find some specs of the motor from here and here, you can find more information on the internet.

Here are a few useful links:

C- Wind Turbine Induction Generator

You are required to design a squirrel cage induction generator for the Northerl Energy’s VIRA-250 wind turbine. The specifications of the wind turbine are as follows:

Project outcomes:

1- Design an optimized induction motor using the Motor Analysis toolbox. Additionaly, you are free to use any software listed below during your design stage.

2- Prepare a report detailing your design process (just supplying .m files is not accepted). In the report please describe how you decided on the following aspects of the prroject.

3- In the second part of the report, I want you to compare at least two worse designs with the optimum design presented in the first part of your report. For example, you can vary one of the following:

First Project Topics (Deadline: 19/04):

Here are the options for your first projects:

A- Transformer Design for a X-Ray Device:

You are supposed to design a high-frequency, high-voltage transformer that will be used in a X-Ray device. Here are some links to get you familiar with the topic:

The specs of the transformer are as follows:

B- Transformer Design for a HVDC Transmission System:

In a HVDC transmission system, DC/AC + Transformer + AC/DC system is used to step-up the DC voltage to several kV for long range transmission. Here are some links to get you familiar with HVDC Transformers:

The specs of the transformer that you are going to design are as follows:

C- Eddy Current Brake Design

In this project you are supposed to design an eddy current brake design which will be used as a mechanical damper. Here are some links on the eddy current brakes:

The eddy current brake has the following specs:

You don’t have to, but I strongly advise you to use a FEA software (some options are listed above) for this project.

First Project Guidelines:

You’re free to choose any of the projects. Each project has different requirements and outcomes:

Project outcomes for transformer designs:

The most important parameters are as follows (but not limited to):

Project outcomes for the eddy current brake:

Notes on Projects

Your reports has to be reproducible (i.e. it has to include codes, equations and results in a single document). The results have to be uploaded in an online repository (i.e. GitHub). For that purpose, I personally suggest IPython Notebook, which can be viewed online. However, you can also use Mathematica, RStudio or Matlab Report Generator, but not Microsoft Word.

If you are convinced to use IPython, here are some useful links:

The source files and reports has to be uploaded to the online repository of the course (i.e. https://github.com/odtu/ee564. Have a look at this link for a quick start.

Projects Grading

Number of Commits:30%: The number of edits of your project files as seen from the contributors list. For example, if you start making your project in the last few days, you’ll get no credit. If you start early and continue editing your files, you’ll get full credit. The project topics are not easy, so this is a way to encourage to start early and work regularly.

Level of Information:50%: The detail level of your designs (see requirements above), and the accuracy of your calculations.

Report Quality:20%: Text explaining your design decisions, quality of your figures, citing relevant studies and your conclusion section.