Design and Implementation A Smart Monitoring and Controlling System of Three-Phase Photovoltaic Inverter Based on LoRa

Abstract

In this paper, a new smart monitor and control system has been designed for injected \npower application to grid from a three-phase photovoltaic inverter (a smart monitor and control \nsystem (SMCS)). The system consists two main units. Firstly, the control system unit: this unit \nconnects directly to the inverter to measure the output voltage of three-phase photovoltaic \ninverter and the control circuit, It can turn the inverter ‘on’ or ‘off’ from a long distance. \nSecondly, the monitoring unit: this unit is designed to monitor the states of the photovoltaic \ninverter system from long distances. It has two monitoring options OLED and a smartphone \nmonitoring application. LoRa technique (long range) used to send and receive data between \ncontrollers system and monitoring system. LoRa is a new type of wireless communication \ntechnology within the Internet of Things (IoT). The SMCS application has been designed by \nusing open source software “MIT App Inventor 2”; this application is used to sends and \nreceives the data from a control unit by using Bluetooth as a wireless communication in order \nto monitor and control the whole system. The main advantage of the SMCS that it can monitor \nand control three-phase photovoltaic inverters that have been installed in remote and rural \nareas.