Phasor modeling approach for single phase A/C motors

In this paper we present results of a development of a single-phase induction motor model using dynamic phasors. This phasor model is intended to represent the compressor portion of the behavior of a typical residential air conditioner load. A review of the model is presented. This model is then used to validate data from laboratory tests of air conditioners at Bonneville Power Administration. The results show that the model accurately captures the relations between voltage, frequency, active power, and reactive power. Furthermore, the model reproduces motor stall conditions, both the onset and severity of the stall. We expect that the use of this load model will improve our ability to anticipate voltage and transient stability problems in the power grid.