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With a reciprocating-compressor drive, large errors in the prediction of current pulsation can occur when the induction-motor steady-state characteristics are used in the analytical solution. A numerical solution, in which the induction motor is represented by its general 2-axis equations, is presented, and the results favourably compared with test measurements. The currently used equation for induction-motor compressor factor is shown to be unsatisfactory, and a revision, involving the motor synchronising capability, is proposed.
Electrical Engineers, Proceedings of the Institution of (Volume:121 , Issue: 11 )
Date of Publication: November 1974