Development of PIC18F4431 microcontroller controlled air conditioning system

Abstract The aspiration for high performance industrial applications increases owing to advance in the field of power electronics. This contributed to swift developments in digital motor control technology. High energy consumption and poor efficiency are major challenges of motor driven appliances. These appliances need cost-effective solutions controlled drive that improves process precision, cuts operating costs and facilitates less energy. The goal of this research is to develop feasible motor control air conditioning system. The developed system describes the optimization and designing of a microcontroller controlled drive with speed sensing. It is PIC18F4431 based microcontroller primarily for motor control applications. This study focuses on speed control of induction motor using PIC microcontroller through PWM technique. The result of the research indicates that at the 5% air flow rate, the air conditioner without the drive consumed about 87% energy whereas the microcontroller based drive only consumed 20% energy at the same flow rate. This indicated the energy saving of about 67% by the air conditioner with the adoption of PIC18F4431 microcontroller controlled drive.