Parameter estimation of single-phase induction machines

This paper sets forth the development of the q-d model of single-phase induction machines, which is then simplified and used for the estimation of the machines´ electrical parameters. In simplifying the model equations of the machines, two transformations are used-the stationary reference frame and the turn ratio transformations, following which the harmonic balance technique is then applied to develop a steady-state model for the parameter determination. The electrical parameters of a 1 hp single-phase induction motor were determined and were shown by confirmatory experimental results to accurately predict both the machine steady-state characteristics and waveforms when the single-phase machine operates in both motoring and generating modes.