Most small power induction motors need to operate with single-phase a.c. power supplies that are readily available at homes, and remote rural areas . These machine are used to drive fans, pumps, air compressors, refrigeration compressors, air conditioning fans and blowers, saws, grinders and office
This paper presents a real-time electromagnetic transient model for single-phase induction machines (SPIM). The paper starts with the introduction and analysis of unsymmetrical 2- phase induction machines. Although, main and auxiliary windings are not symmetric, a technique has been introduced which facilitates the inclusion of magnetic saturation in this model. The embedded phase domain approach  is utilized for incorporation of this model into the network solution of the RTDS simulator. Various features of the model such as embedded breakers are introduced in the paper. The model is validated using stand-alone numerical simulations and analytical solutions. Possible configurations of the model such as “capacitor-start induction motor” and “capacitor-start capacitor-run induction motor”, are demonstrated. Scenarios including stalling of air-conditioning pumps during a fault in distribution circuits are presented.
A.B. Dehkordi, In Proc. International Conference on Power Systems Transients (IPST2015), Cavtat, Croatia, June 2015
KEYWORDS: real-time digital simulation, single-phase induction machine, saturation, embedded phase domain approach, digital transient network analyzer, distribution network