High-speed solid-rotor induction machine – calculation program
Uzhegov, Nikita (2012)
Pro gradu -tutkielma
Uzhegov, Nikita
2012
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe201205305671
https://urn.fi/URN:NBN:fi-fe201205305671
Tiivistelmä
The aim of this thesis is to utilize the technology developed at LUT and to provide an
easy tool for high-speed solid-rotor induction machine preliminary design. Computer aided design tool MathCAD has been chosen as the environment for realizing the
calculation program. Four versions of the design program have been made depending on the motor rotor type.
The first rotor type is an axially slitted solid-rotor with steel end rings. The next one is
an axially slitted solid-rotor with copper end rings. The third machine type is a solid rotor
with deep, rectangular copper bars and end rings (squirrel cage). And the last one
is a solid-rotor with round copper bars and end rings (squirrel cage). Each type of rotor
has its own specialties but a general thread of design is common.
This paper follows the structure of the calculating program and explains some features
and formulas. The attention is concentrated on the difference between laminated and
solid-rotor machine design principles. There is no deep analysis of the calculation ways
are presented. References for all solution methods appearing during the design
procedure are given for more detailed studying.
This thesis pays respect to the latest innovations in solid-rotor machines theory. Rotor
ends’ analytical calculation follows the latest knowledge in this field. Correction factor
for adjusting the rotor impedance is implemented.
The purpose of the created design program is to calculate the preliminary dimensions of the machine according to initial data. Obtained results are not recommended for exact
machine development. Further more detailed design should be done in a finite element
method application. Hence, this thesis is a practical tool for the prior evaluating of the
high-speed machine with different solid-rotor types parameters.
easy tool for high-speed solid-rotor induction machine preliminary design. Computer aided design tool MathCAD has been chosen as the environment for realizing the
calculation program. Four versions of the design program have been made depending on the motor rotor type.
The first rotor type is an axially slitted solid-rotor with steel end rings. The next one is
an axially slitted solid-rotor with copper end rings. The third machine type is a solid rotor
with deep, rectangular copper bars and end rings (squirrel cage). And the last one
is a solid-rotor with round copper bars and end rings (squirrel cage). Each type of rotor
has its own specialties but a general thread of design is common.
This paper follows the structure of the calculating program and explains some features
and formulas. The attention is concentrated on the difference between laminated and
solid-rotor machine design principles. There is no deep analysis of the calculation ways
are presented. References for all solution methods appearing during the design
procedure are given for more detailed studying.
This thesis pays respect to the latest innovations in solid-rotor machines theory. Rotor
ends’ analytical calculation follows the latest knowledge in this field. Correction factor
for adjusting the rotor impedance is implemented.
The purpose of the created design program is to calculate the preliminary dimensions of the machine according to initial data. Obtained results are not recommended for exact
machine development. Further more detailed design should be done in a finite element
method application. Hence, this thesis is a practical tool for the prior evaluating of the
high-speed machine with different solid-rotor types parameters.