Evaluation of pressure pulsation frequency by motor current signature analysis

This paper deals with the possibility of evaluating the frequency of the pressure pulses by measuring the motor current and its evaluation. For some applications where it is not possible, to use pressure pulse evaluation from pressure measurements, this method may be appropriate and relatively simple. The article first describes general procedures for evaluating currents. Motor current signature analysis, instantaneous power signature analysis and park's vector approach was chose as used diagnostics method. Next, the article deals with the description of the experiment and then with its evaluation.