inverter split

In recent years, DC inverter air conditioner is becoming more popular compared to the conventional air conditioner due to its many advantages. As the compressor takes the most power in any air conditioning system, the change in the compressor technology has enabled better and more efficient air conditioner or heatpump to be deployed.
AC Induction MotorDC Inverter Control Circuitry

The electronics control is the most complicated part of a DC inverter system hence making it one of the most costly component of the air conditioner, the other part being the compressor.

Let us look at the control circuity for the DC compressor that takes its supply from a single phase power supply. There are many variation of design and we will look at a design that uses power factor correction that gives better power factor.