Detection of vibration in electric motors using indirect sensors
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Sähkötekniikan korkeakoulu |
Master's thesis
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Mcode
ELEC3025
Language
en
Pages
46 + 3
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Abstract
Rotating machinery plays an important role in today’s industrial arena, they are used in a wide range of industries and vital sectors. From generating electricity at power plants to enabling processes in manufacturing and production lines, these machines have become an integral part of modern manufacturing and economic growth. As the number of these rotating machinery increases with time, monitoring these devices to prevent failures has become crucial. Typically, these monitoring systems utilize sensors or experienced employees to verify and detect faults. These kinds of systems increase the costs on the client side. This thesis will focus on the use of variable frequency drive to detect vibration in rotating machinery through indirect measurements and signals, such as motor current, voltage, and estimated signals like torque. These signals will be used to verify if vibration and torsional vibration are visible in variable frequency drive. The thesis focuses on the unbalance as a source of vibration and torsional vibration, beginning with the initial modelling of the system using Simulink. A setup was built in the laboratory to perform test and verify the model’s prediction. The results were compared with the mathematical formulas as well as with the results obtained from the simulator.Description
Supervisor
Särkkä, SimoThesis advisor
Voloshkin, JuriForstadius, Jari