Modeling method of variable frequency air conditioning load

Abstract

This paper first studies the working mechanism of a variable frequency air conditioner, then a detailed modeling of a variable frequency air conditioner is established, in which the motor is equivalent to the third-order induction motor model, so as to obtain the state equation of the variable frequency air conditioner based on the detailed mechanism model. Furthermore, combined with the load voltage and frequency characteristics, the influence of variable frequency air conditioners on the stability characteristics of power system is analyzed through simulation calculation.

Keywords

• Electric power electronic load
• Variable frequency air conditioner
• Load model