Title :
Motor current signature analysis
Author :
Pillay, P. ; Xu, Z.
Author_Institution :
Dept. of Electr. & Comput. Eng., Clarkson Univ., Potsdam, NY, USA
Abstract :
This paper shows how the speed of an induction motor (IM) can be extracted from the motor currents of an induction motor with a Labview implementation of motor current signature analysis (MCSA). The implementation is first applied to an IM driven by the 60 Hz mains. The estimation system consists of data acquisition, demodulation, and FFT spectrum analyses. The estimation is then extended to PWM inverter-fed IM drives. For PWM drives, the presence of stator current harmonics and a variable fundamental frequency demands filtering and a more powerful demodulation technique. The above estimation algorithms are implemented in Labview for Windows
Keywords :
PWM invertors; data acquisition; demodulation; electric machine analysis computing; fast Fourier transforms; harmonics; induction motors; machine theory; parameter estimation; software packages; stators; 60 Hz; FFT spectrum analyses; Labview for Windows; Labview implementation; PWM inverter-fed drives; data acquisition; demodulation; filtering; induction motor; motor current signature analysis; speed estimation; stator current harmonics; variable fundamental frequency; Data acquisition; Data mining; Demodulation; Frequency; Induction motors; Power harmonic filters; Power system harmonics; Pulse width modulation; Pulse width modulation inverters; Stators;
Conference_Titel :
Industry Applications Conference, 1996. Thirty-First IAS Annual Meeting, IAS '96., Conference Record of the 1996 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-3544-9
DOI :
10.1109/IAS.1996.557096
