Power Loss Analysis in 15 Level Asymmetric Reduced Switch Inverter using PLECS Thermal Models

Kumar, Devineni Gireesh; Ganesh, Aman; Bhoopal, Neerudi

doi:10.25103/jestr.144.02

Cited by 2 publications

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“…Tis study ofered a simple architecture for an asymmetric inverter suited for varying dc sources, such as SPV systems, in its fndings [20,36]. Figure 1(a) depicts the proposed model's basic cell layout.…”

Section: Design Of Asymmetric Multilevel Invertermentioning

confidence: 99%

Design of an Optimized Asymmetric Multilevel Inverter with Reduced Components Using Newton‐Raphson Method and Particle Swarm Optimization

Kumar¹,

Sireesha

Ganesh

et al. 2023

Mathematical Problems in Engineering

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Multilevel inverters have great scope in current developments of grid-connected solar PV systems. Two-level inverters are the simplest kind of multilevel inverter available (MLI). As the number of output levels is raised, the total harmonic distortion decreases. In classic MLI topologies, more electronic components are utilized to get higher-level outputs, which raise the cost, complexity, and volume of typical MLI installations. By reducing the design components, the cost of the system will be reduced. Furthermore, the two- and three-level inverters produce constant dv/dt output, which increases the stress on the power switches. This research proposes an asymmetric MLI topology that is suitable for PV applications and utilizes less number of DC sources and switches. The proposed inverter is controlled by selective harmonic elimination-based pulse width modulation (SHEPWM) to eliminate the lower-order dominant harmonics. The nonlinear equations produced by the SHEPWM are solved for the switching angles of the proposed inverter using the Newton-Raphson (NR) method and particle swarm optimization (PSO) method for various modulation indexes. The performance of the proposed inverter is analyzed based on the total harmonic distortion (THD) of the output for different operating levels of the inverter by comparing similar topologies in the literature. The THD obtained by the NR method is 7.3% and by using PSO is 4.23% at 0.9 modulation index.

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Section: Design Of Asymmetric Multilevel Invertermentioning

confidence: 99%

Design of an Optimized Asymmetric Multilevel Inverter with Reduced Components Using Newton‐Raphson Method and Particle Swarm Optimization

Kumar¹,

Sireesha

Ganesh

et al. 2023

Mathematical Problems in Engineering

Self Cite

View full text Add to dashboard Cite

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Performance Analysis of an Optimized Asymmetric Multilevel Inverter on Grid Connected SPV System

Kumar¹,

Ganesh

Sireesha

et al. 2022

Energies

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The purpose of this research is to develop an efficient single-phase grid-connected PV system using a better performing asymmetrical multilevel inverter (AMI). Circuit component reduction, harmonic reduction, and grid integration are critical criteria for better inverter efficiency. The proposed inverter’s optimized topology requires seven unidirectional switches, three symmetric dc sources, and three diodes to produce an asymmetric fifteen level output; whereas, the same configuration will generate 7, 11, and 15-level output with an appropriate choice of dc source magnitudes. It is possible to reduce inverter losses and boost efficiency by decreasing the number of switches used. The integration of an asymmetric 15-level inverter with a grid-connected solar photovoltaic system is discussed in this article. A grid-connected solar photovoltaic (GCSPV) system is modelled and simulated using an asymmetric 15-level inverter. The dc sources of the 15-level inverter are replaced with PV sources. The results were analyzed with different operating temperatures and solar irradiance conditions. The GCSPV system is controlled by a closed-loop control system using Particle Swarm Optimization (PSO), Harris Hawk Optimization (HHO), and Hybrid Particle Swarm Optimization-Genetic Algorithm (PSOGA) based Proportional plus Integral (PI) controllers. Grid voltage, grid current, grid power, and total harmonic distortion (THD) of grid currents were analyzed. The performance of the 15-level asymmetric inverter was evaluated by comparing the THD of the grid current and the efficiency of the grid-connected photovoltaic system.

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Power Loss Analysis in 15 Level Asymmetric Reduced Switch Inverter using PLECS Thermal Models

Cited by 2 publications

References 0 publications

Design of an Optimized Asymmetric Multilevel Inverter with Reduced Components Using Newton‐Raphson Method and Particle Swarm Optimization

Design of an Optimized Asymmetric Multilevel Inverter with Reduced Components Using Newton‐Raphson Method and Particle Swarm Optimization

Performance Analysis of an Optimized Asymmetric Multilevel Inverter on Grid Connected SPV System

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