A Novel Asymmetrical 21-Level Inverter for Solar PV Energy System With Reduced Switch Count
Shaik Reddi Khasim,C. Dhanamjayulu,Sanjeevikumar Padmanaban,Jens Bo Holm-Nielsen,Massimo Mitolo +4 more
TLDR
In this article, a novel asymmetric 21-level multilevel inverter topology for solar PV application is presented, where the PV voltage is boosted over the DC link voltage using a three-level DC-DC boost converter interfaced in between the solar panels and the inverter.Abstract:
This article presents a novel asymmetrical 21-level multilevel inverter topology for solar PV application. The proposed topology achieves 21-level output voltage without H-bridge using asymmetric DC sources. This reduces the devices, cost and size. The PV standalone system needs a constant DC voltage magnitude from the solar panels, maximum power point tracking (MPPT) technique used for getting a stable output by using perturb and observe (P&O) algorithm. The PV voltage is boosted over the DC link voltage using a three-level DC-DC boost converter interfaced in between the solar panels and the inverter. The inverter is tested experimentally with various combinational loads and under dynamic load variations with sudden load disturbances. Total standing voltage with a cost function for the proposed MLI is calculated and compared with multiple topologies published recently and found to be cost-effective. A detailed comparison is made in terms of switches count, and sources count, gate driver boards, the number of diodes and capacitor count and component count level factor with the same and other levels of multilevel inverter and found to be the proposed topology is helpful in terms of its less TSV value, devices count, efficient and cost-effective. In both simulation and experimental results, total harmonic distortion (THD) is observed to be the same and is lower than 5% which is under IEEE standards. A hardware prototype is implemented in the laboratory and verified experimentally under dynamic load variations, whereas the simulations are done in MATLAB/Simulink.read more
Citations
More filters
Single-Sourced Double-Stage Multilevel Inverter for Grid-Connected Solar PV Systems
TL;DR: In this paper , a dc-source-based double level-doubling network high-resolution multilevel inverter topology with the appropriate blend of switches is presented to address most of the practical constraints of central inverter application.
Journal ArticleDOI
Impact of Electrical Connection Distance on the Open Loop Modal Resonance of Grid Connected Photovoltaic Farms
TL;DR: In this article , the authors examined the impact of the electrical distance between grid-connected PV farms on OLMR intensity by using a simplified real power network and derived a linearized state-space model of the real power system comprising grid connected PV farms.
Journal ArticleDOI
Analysis and Development of 53-Level Asymmetric Multilevel Inverter with Reduced Component for Fixed and Variable Loads
L. Vijayaraja,S. Ganesh Kumar +1 more
TL;DR: In this article , an asymmetric multilevel inverter with reduced number of devices is proposed for renewable energy applications, which consists of a basic section and an H-bridge circuit.
Journal ArticleDOI
A Single Inductor Multi-Port Power Converter for Electric Vehicle Applications
TL;DR: In this paper , a non-isolated multi-port power converter is proposed to hybridize energy alternatives in electric vehicles, which can boost the voltage levels with dual inputs such as a renewable solar PV and the other input as a battery and provides dual outputs with various voltage levels.
Journal ArticleDOI
A Single Inductor Multi-Port Power Converter for Electric Vehicle Applications
TL;DR: In this paper , a non-isolated multi-port power converter is proposed to hybridize energy alternatives in electric vehicles, which can boost the voltage levels with dual inputs such as a renewable solar PV and the other input as a battery and provides dual outputs with various voltage levels.
References
More filters
Journal ArticleDOI
Comprehensive Approach to Modeling and Simulation of Photovoltaic Arrays
TL;DR: In this article, the authors proposed a method of modeling and simulation of photovoltaic arrays by adjusting the curve at three points: open circuit, maximum power, and short circuit.
Journal ArticleDOI
The age of multilevel converters arrives
TL;DR: In this paper, the most relevant characteristics of multilevel converters, to motivate possible solutions, and to show that energy companies have to bet on these converters as a good solution compared with classic two-level converters.
Journal ArticleDOI
Multilevel Inverter Topologies With Reduced Device Count: A Review
TL;DR: In this article, some of the recently proposed multilevel inverter topologies with reduced power switch count are reviewed and analyzed, both in terms of the qualitative and quantitative parameters.
Journal ArticleDOI
Short-current pulse-based maximum-power-point tracking method for multiple photovoltaic-and-converter module system
TL;DR: In this paper, the authors proposed an adaptive MPPT algorithm for photovoltaic (PV) power generation systems based on a short-current pulse of the PV to determine an optimum operating current where the maximum output power can be obtained and completely differs from conventional hill-climbing-based methods.
Journal ArticleDOI
Multilevel Inverter Topologies for Stand-Alone PV Systems
TL;DR: It is shown that versatile stand-alone photovoltaic (PV) systems still demand on at least one battery inverter with improved characteristics of robustness and efficiency, which can be achieved using multilevel topologies.