Modeling and Analysis of a Cascaded Battery-Boost Multilevel Inverter Using Different Switching Angle Arrangement Techniques

Abstract

Multilevel inverters have the capability to produce an AC staircase output waveform without using a bulky passive filter. Therefore, the multilevel inverters are gaining more and more popularity, among the different types of inverters, for photovoltaic applications in the modern era of technology. However, if the switching angle arrangement technique is not selected appropriately then the total harmonic distortion of the voltage output waveform may become undesirable. In this paper, Half-Equal-Phase, Feed-Forward and Selective Harmonics Elimination Pulse Width Modulation switching angle arrangement techniques at different power factors (i.e., 1.0, 0.75 and 0.50) are applied to a cascaded battery-boost inverter. PSIM software is used to evaluate and compare the performance of a 9-level cascaded battery-boost inverter with three switching angle arrangement techniques at power factors of 1.0, 0.75, and 0.50, respectively. Simulation results show that the Selective Harmonics Elimination Pulse Width Modulation technique can produce an output voltage and current waveform with the lowest total harmonic distortion. On the other hand, the output current waveform produced by power factor 0.50 had the lowest total harmonic distortion.

An Optimized Multilevel Inverter Topology with Symmetrical and Asymmetrical DC Sources for Sustainable Energy Applications

“…Authors in [13][14][15] tried to reduce the number of switches to overcome the cost constraint, and improve the quality of output voltage waveform by increasing the number of levels in the output voltage. This paper presents a single-phase MLI topology with symmetrical and asymmetrical voltages, which uses a reduced number of components compared to the existing topologies www.etasr.com Manjunatha et al: An Optimized Multilevel Inverter Topology with Symmetrical and Asymmetrical DC … [16][17][18]. This configuration is the extension of the topology proposed in [10], which can be extended to three-phase [17].…”

Battery Charging Optimization of Solar Energy based Telecom Sites in India

“…With different charging current limits the battery voltage and SOC can be plotted with charging current. With different charging voltage settings in constant charging voltage mode, the charging performance can be optimized [17][18][19]. With this practical simulation model, any permutation and combination of charging voltage versus charging current and battery SOC can be developed and tested.…”

Determination of the Harmonic Losses in an Induction Motor Fed by an Inverter

“…In modern semiconducting techniques, the switching frequency and modulation index of PWM variable speed drives can be allowed to be further increased and eliminate all harmonics below the switching frequency. Although this technique can increase the machine performance and reduce noise emissions, the machine harmonic losses cannot be reduced considerably by increasing the switching frequency above 10kHz [15][16][17][18][19][20][21][22][23][24]. To model the harmonic losses of the induction machines with different power ratings, a complete equivalent circuit including all harmonic loss components was first presented in [5].…”