Smart power saver using PID control based on PLC application

摘要

The changes in lifestyle to modern living allow consumer to use more sophisticated electrical appliance to suit their needs. The technology that involved in electrical engineering appliances has developed so rapidly to meet the customer demand. Consumer finds difficulty to control usage of appliances with high energy consumption .This project present a smart power saving and control system for the household electric power application. The system consists of hardware to limit an input current attached at middle between single phase power supply socket and household appliances. The system integrates power electronic circuit and a PID controller in PLC to limit the value of input current based on user electrical requirement usage. The current converter behaves as feedback sensor to system with power AC controller as final control element. This can provide the elder a safe and energy saving environment and service for daily life. It is done by controlling the current input as a set point at desired value of current input from incoming ELCB 20 ampere which control using PID controller by Programmable Logic Circuit Siemens S7-1200. The signal from PLC will analysis base on control system behavior. The result that has been obtained is more significant on electrical appliances with high power consumption. Future work can be upgraded with combination of intelligent control system where the intended power requirement is automatically control using Fuzzy or Neuro Fuzzy controllers.