Design and development of SEPIC DC-DC boost converter for photovoltaic application

Abstract

This study highlights a new construction of SEPIC DC-DC converter. The proposed converter aims for some features such as high voltage gain, continuous input current and reduce stress on the power switch. In addition, the circuit construction ensurs the simplicity in design along with signicant cost saving, since its components are readily available and smaller in size compared to the off-shelf components. This type of converter can adjust the DC voltage to maintain its output voltage to be constant. Typically, SEPIC operated in equipment that uses battery and also in wide range input voltage DC power supply. The converter is designed for renewable energy application where it is able to regulate the output voltage of the Photovoltaic (PV). The converter has been analysed based on different switching frequencies and duty cycle. Thus the outcome of the proposed converter can be achieved by using D=0.45 and fs=30 kHz. The proposed converter is supplied by 26V as an input voltage and produces 300V output and gives 94% of efficiency.

Modeling of micro-grid with the consideration of total harmonic distortion analysis

“…There are plenty of designs to cater the conversion problem, where the nature of DGs forces this kind of devices to the system. A tremendous amount of harmonics is supplied and introduced to the system due to the use of these power electronic devices [9]: [15]. Plenty of works in the literature have attempted to mitigate the presence of harmonics in the micro-grid or the overall power system.…”

Additional Series Positive Output Superlift LUO Converter using Particle Swarm Optimization

“…Kp= 0.4798, Ki = 33.8203 are the optimised values of PI[a]. All the simulations are carried in PSIM and the optimal of the PI controllers are calculated in MATLAB using the particle swarm optimisation technique [13].…”

Integrated arrangement of advanced power electronics through hybrid smart grid system

“…As the technology and innovation transformit from plants beyond the customer meters known as the electrification, decentralizationand IT/OT digitization, grid-connected PV system is one of the most renewable and clean energy sources that has been utilized over decades. Grid-connected PV is a smart grid system, which includes PE, such as a DC/DC converter that can guarantee maximum harvested sun energy through a maximum power point tracking (MPPT) control, and the converter is used to interconnect PV into the grid [17][18][19]. Figure 1 illustrates the PE that commonly used for the grid-connected PV system.…”