Modelling and Measurement of Asynchronous Motor with Special Rotor Structure

Title

Modelling and Measurement of Asynchronous Motor with Special Rotor Structure

 Author

Luo, Pengfei (TU Delft Electrical Engineering, Mathematics and Computer Science)

Contributor

Polinder, Henk (mentor)
Bax, Peter (graduation committee)
Dong, Jianning (graduation committee)
Lahaye, Domenico (graduation committee)

Degree granting institution

Delft University of Technology

 Date

2017-11-28

 Abstract

With the rising price of permanent magnetic material and specific demanding for high speed low noise motor, an asynchronous motor with special rotor structure is propose as an interesting research project. If this asynchronous motor can be well understand and meet the requirements, it could be applied for several products. With not much research on this kind of motor, the understanding and model of the motor itself is a valuable project.

In this thesis a theory model for the special structure asynchronous motor is introduced. Simulation base on the model has been done. After these a practical motor is made for the measurement. Measurement setup is designed and made, including power electronic power supply for the asynchronous motor.

The characteristics of the asynchronous motor are measured. From the measurement results the most important problem is that the asynchronous motor tends to run at lower speed with respect to the synchronous speed. To understand this much effort is made. Improvement of the measuring mothed and power supply quality is tried. Influence of the motor structure is investigated, such as closing ring and self-inductance of the windings. Theory calculation are make to explain the low running speed, including the eccentric rotor influence and space harmonics. An improved theory model named ‘Zero airgap model’ for the asynchronous motor is introduced. Conclusions are made that the low running speed could be a reason of the low speed traveling wave or the additional friction in the system. Suggestions on further research of this asynchronous motor are made at the end.

 Subject

Asynchronous motor
Special rotor
Model
Measurement

 To reference this document use:

http://resolver.tudelft.nl/uuid:401d2205-98e6-46cc-bd45-59691cdc13cb

 Part of collection

Student theses

 Document type

master thesis

 Rights

© 2017 Pengfei Luo
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