Buck-boost single-stage inverter integrated with battery charging for renewable energy harvesting

Hasbolah, Muhammad Hazwan (2021) Buck-boost single-stage inverter integrated with battery charging for renewable energy harvesting. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Conventional energy generation affected our earth and something needs to be done to reduce the effect of the greenhouse defect. Renewable energy has been one of the best alternatives to counter this problem before it getting worse. Solar energy is the most abundant source on the earth. With the increase of the renewable energy demand, the need for the inverter is very common in solar energy harvesting to get an AC load per household application. The buck-boost, a single-stage inverter integrated with a battery topology is introduced in this project. Buck-boost single-stage inverter also improves the efficiency of the system for the stand-alone solar system because of the topology proposed only one conversion stage. With this implementation, hoping that the output of the inverter can improve the stability and reliability of the system. A method that is used in this system is by eliminated the transformer and reduce the multiple stages that involve the common inverter. The desired output of the inverter is 240 Vrms in phase with low noise and disturbance in the system. The topology used in the inverter is a buck-boost single-stage inverter that implements a modified PWM technique to get the desired output. Integrated with battery also utilized and increase the usage of sources to the maximum. The system will be simulated in the MATLAB Simulink and the performance of the inverter is observed. The THD of buck-boost single stage output voltage is produced sinusoidal waveform with 6.51%.

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