


Volume 20 No 20 (2022)
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DESIGN AND DEVELOPMENT OF SWITCHED CAPACITOR MULTILEVEL INVERTER WITH SPWM TECHNQUIE
Ms. Anusha P, Dr. Pusha
Abstract
Since fossil fuels have been
depleting at an alarming rate, renewable energy has
been on the rise in recent decades. However, the
DC currents that will power our homes and
businesses from these sources are still decades
away. The vast majority of uses need for an AC
connection. The process of changing direct current
to alternating current has arrived. There is the
usage of an inverter, a circuit that changes DC
power into AC power. The inverter's efficiency is
negatively impacted by the high total harmonic
distortion % caused by the inverter's output
harmonics. Multiple DC voltage levels may be
generated using a Multi-Level inverter, which can
also be employed in high-power and high-voltage
applications. With lower harmonic distortion, this
produces decent value output. A switched-capacitor
frontend and an H-Bridge backend are provided for
a cascaded capacitor-switched multilevel inverter
that makes use of the SPWM approach in this
research. With the frontend, voltage may be
switched between series and parallel at a greater
range of values than before. Increasing voltage
levels is an effective way to reduce harmonic
distortion. In contrast to traditional multicarrier
modulation, the suggested symmetrical triangular
waveform modulation may be implemented
directly in analog and has a low modulation
frequency. All aspects of the network architecture,
including the routing protocol, the parameters used
in it, the symmetry of the modulation, the Fourier
analysis of data, the frequency of network
operations, and the efficiency of the topology, are
examined. The simulation results are then
compared to those obtained in an experiment with a
rated output frequency of 25 kHz. In addition, a
low-power prototype model has been produced.
Keywords
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