Implementation of Installation Two-way DC-DC Converter with IoT Control and Monitoring

Abstract

Renewable energy generation, such as solar energy, produces electrical energy with fluctuating voltages. Light intensity is one of the causes of this fluctuating voltage. The resulting voltage is directly proportional to the intensity of the light. It is necessary to implement a converter system to increase efficiency in the solar panel system. The converter with an insert buck-boost topology is designed to regulate the direction of power in and out of the battery. Setting the direction of the flow of power is considered important in order to increase the efficiency of the solar panel system. This research focuses on the design and implementation of the Online Insertion TwoWay DC-DC Converter. The converter functions to connect the storage media and the DC Bus and smoothes the output current with a phase shift of the PWM signal by 180°. The phase shift feature is set using the ATMEGA328P minimum system. In addition to functioning as a buck (charging) and boost (discharging) battery, there is also an online monitoring function. The online monitoring feature is designed to display the DC Bus voltage value and battery voltage, while the online controlling feature allows users to manually change the converter mode from buck to boost or vice versa. The test results show that the Insertion Bidirectional DC-DC Converter can produce a stable voltage according to the given duty cycle. The average efficiency is 88% for buck mode and 92% for boost mode. In the blynk application, it can display the DC Bus voltage and battery voltage and the user can change the converter mode manually.