CONDITION MONITORING OF INDUCTION MOTORS VIA INSTANTANEOUS POWER ANALYSIS

Many techniques have been developed which support the construction of condition
monitoring and fault diagnosis for induction motors. However, most of these
techniques use sensors as theirintegral components which usually expensive and need
to be properly installed on the machines for accurate results. Furthermore, sensors
have some life period after which they may fail and in certain cases earlier than the
bearings life period, which make these techniques unreliable.
The idea for proposing instantaneous power analysis monitoring technique in this
thesis comes from the usual practices in industries to have current and voltage
transformers installed for the measurement of the current and voltage for control and
display purposes.