Web-Based Control Three-Phase Motor System

This article aims to present the design concept of a 3-phase induction motor speed controller via a web server system. This design uses the Node Mcu ESP 8266 microcontroller set to process by receiving commands from a web browser and sending commands to the Relay Board, which will act as a controller for the relay output set (Control Relay output). This setting controls the inverter, allowing it to operate only when commanded by the microcontroller and there is a display set to control with a function to control the rotation reversal (Reverse Forward) and control the motor speed level 3 speeds: low, medium and high. The test results of the operation found that: motor works precisely according to the specified command, on/ off via smartphone and the operation of the 3-phase motor speed control set via the web server system, is 100 percent, which is considered to have very good accuracy in the command. The Node Mcu ESP8266 microcontroller has a built-in Wi-Fi module (Wi-Fi Built-in), making it easy to connect to the internet. It also has a general-purpose input/ output (GPIO) port that can connect to sensors and other devices, making it suitable for industrial control and can be used in IoT (IoT), but it depends on the stability of the internet signal.