scholarly journals Switching Frequency Effects on the Efficiency and Harmonic Distortion in a Three-Phase Five-Level CHBMI Prototype with Multicarrier PWM Schemes: Experimental Analysis

Energies ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 586
Author(s):  
Alessandro Busacca ◽  
Antonino Oscar Di Tommaso ◽  
Rosario Miceli ◽  
Claudio Nevoloso ◽  
Giuseppe Schettino ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Experimental Analysis ◽  
Renewable Energy Sources ◽  
Harmonic Distortion ◽  
Modulation Index ◽  
Energy Sources ◽  
Experimental Investigations ◽  
Switching Frequency ◽  
Control Board ◽  
Three Phase

The current climatic scenario requires the use of innovative solutions to increase the production of electricity from renewable energy sources. Multilevel Power Inverters are a promising solution to improve the penetration of renewable energy sources into the electrical grid. Moreover, the performance of MPIs is a function of the modulation strategy employed and of its features (modulation index and switching frequency). This paper presents an extended and experimental analysis of three-phase five-level Cascaded H-Bridges Multilevel Inverter performance in terms of efficiency and harmonic content considering several MC PWM modulation strategies. In detail, the CHBMI performance is analyzed by varying the modulation index and the switching frequency. For control purposes, the NI System On Module sbRIO-9651 control board, a dedicated FPGA-based control board for power electronics and drive applications programmable in the LabVIEW environment, is used. The paper describes the modulation strategies implementation, the test bench set-up, and the experimental investigations carried out. The results obtained in terms of Total Harmonic Distorsion (THD) and efficiency are analyzed, compared, and discussed.

scholarly journals Fuzzy Model Predictive Control for Grid Tied Inverter with Multiport Renewable Energy Systems

2019 ◽  
Vol 8 (11) ◽  
pp. 3044-3049
Keyword(s):  
Renewable Energy ◽  
Model Predictive Control ◽  
Predictive Control ◽  
Renewable Energy Sources ◽  
Harmonic Distortion ◽  
Fuzzy Model ◽  
Two Phase ◽  
Grid Voltage ◽  
Three Phase ◽  
Control Schemes

The paper presence a Fuzzy Model Predictive Control (FMPC) for grid tied inverter with multiport DC-DC converter. Three phase grid tied inverter with multiple renewable energy sources are widely used to connect the distributive generating systems to the utility grid. Compare with the conventional control schemes, FMPC scheme is suitable for distributed generation system for its unique advantages likes reliable, fast and more accurate. In this proposed system, different sources having nonlinear parameters and it’s controlled by Fuzzy system. All linear states of three phase grid connected inverters are tested to attain the control objectives. FMPC is proposed to reduce the Total Harmonic Distortion (THD) of the output power. In the proposed system, the inverter control algorithm is developed using some essential vectors. The aim is to monitor the three phase grid current stability and improve the constancy function of the grid-tied inverter during variation of grid voltage. The grid tied converter is designed in two phase standing vector (αβ)model, and the FMPC of grid tied inverter is realized during variation of grid voltage. The simulation results show the superiority of the FMPC in control strategy

Simulation of a Low Voltage Grid with Power Generation from Renewable Energy Resources

2014 ◽  
Vol 918 ◽  
pp. 195-199
Author(s):  
Florin Dragomir ◽  
Otilia Elena Dragomir
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Energy Supply ◽  
Low Voltage ◽  
Renewable Energy Sources ◽  
Energy Resources ◽  
Energy Sources ◽  
Renewable Energy Resources ◽  
Security Of Supply ◽  
Three Phase

Renewable energy source (RES) enables us to diversify our energy supply. Renewable energy sources are getting more and more widespread, mainly due to the fact that they generate energy by keeping the environment clean. This increases our security of supply and improves European competitiveness creating new industries, jobs, economic growth and export opportunities, whilst also reducing our greenhouse gas emissions. This article proposes a simulation of a three-phase low voltage grid with power generation from photovoltaic sources. The proposed system consists of 192 photovoltaic (PV) panels distributed in 32 rows with each 12 PV panels.

scholarly journals A Novel Step-Up Power Converter Configuration for Solar Energy Application

2019 ◽  
Vol 25 (3) ◽  
pp. 50-55 ◽  
Author(s):  
Davood Ghaderi ◽  
Gokay Bayrak
Keyword(s):  
Renewable Energy ◽  
Duty Cycle ◽  
Renewable Energy Sources ◽  
High Gain ◽  
Power Converter ◽  
Boost Converter ◽  
Energy Sources ◽  
Switching Frequency ◽  
Voltage Gain ◽  
First Choice

Renewable Energy Sources (RES) including full cells, wind turbines, and photovoltaic panels, widely are spreading. Among all the renewable energy sources, solar power generation system tops the list. The first choice is the boost converter when the voltage step-up is the issue. But the most important subject is applying an efficient structure with high gain, cheap and quick controller circuit. Our proposed cascaded boost converter is one of such converters which consists of several cheap components such as diode, inductor, capacitor and power switch, which has same switching frequency and phase shift in comparison with conventional boost converters. In comparison with the classic cascaded boost converter, the voltage gain for the proposed structure is very high and by forming a preamplifier layer, for a duty cycle of 80 % by adding only two diodes, one inductor, and one capacitor for the second block, voltage gain is increased by 5 times compared to the classic boost converter. The proposed method provides the increased output voltage along with the duty cycle. The projected strategy has been verified with the help of Matlab/Simulink. Also, a hardware implementation of the proposed converter has been done around 200 W by applying a Jiangyin HR-200W-24V type solar panel.

scholarly journals Modified Permanent Magnet Synchronous Generators for Using in Energy Supply System for Autonomous Consumer

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7196
Author(s):  
Denis Kotin ◽  
Ilya Ivanov ◽  
Sofya Shtukkert
Keyword(s):  
Mathematical Modeling ◽  
Renewable Energy ◽  
Permanent Magnet ◽  
Permanent Magnets ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Synchronous Generators ◽  
Energy Supply System ◽  
Three Phase ◽  
Micro Grid

In this paper, the possibility of using synchronous generators with magnetoelectric excitation for the autonomous consumers’ supply with the use of renewable energy sources is considered. To eliminate a number of the disadvantages associated with the difficulty of energy-efficient regulation of the generated parameters, such as the generated current and voltage, the use of modified multi-winding synchronous generators with permanent magnets is proposed. It allows solving the problem of controlling this type of generator. In addition, the use of this type of generator helps to increase the amount of energy generated. The authors have proposed several synchronous generators with permanent magnets of various supply network architectures: single-phase, two-phase and traditional three-phase types. This will simplify the design of architecture for several cases of consumer power supply systems. It will also help to eliminate the need to organize a balanced distribution of loads in phases to prevent accidents, damage and/or disabling of consumers themselves. Here, we considered mathematical descriptions of several types of generators that differ in their assembling, in particular, the number of phases (one-, two- and three-phase generators), the number of pairs of permanent magnet poles on the rotor, and the method of switching the generator windings among themselves. Using the developed mathematical descriptions that describe the operation of every single winding of the generator, their mathematical models were developed in the SimInTech mathematical modeling environment. The results of the mathematical modeling of these generators were presented; their interpretation for use with renewable energy sources was made; and the methods of using these generators were described. The developed mathematical descriptions of synchronous generators with permanent magnets can be used for further study of their operation. It can also help for the development of control systems and power systems for micro-grid energy complexes that use renewable energy sources to increase the energy efficiency of micro-grid systems.

scholarly journals Experimental analysis of power quality issues in a mobile house supplied by renewable energy sources

2007 ◽  
Vol 1 (05) ◽  
pp. 736-743
Author(s):  
Marco Beccali ◽  
◽  
Massimiliano Luna ◽  
Marcello Pucci ◽  
Gianpaolo Vitale
Keyword(s):  
Renewable Energy ◽  
Power Quality ◽  
Experimental Analysis ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Quality Issues

scholarly journals Multiple low frequency dual reference PWM control of a grid connected photovoltaic three phase NPC inverter with DC/DC boost converter

2014 ◽  
Vol 11 (2) ◽  
pp. 315-337 ◽  
Author(s):  
Rabiaa Mechouma ◽  
Boubekeur Azoui
Keyword(s):  
Renewable Energy ◽  
High Power ◽  
Renewable Energy Sources ◽  
Low Frequency ◽  
Industrial Applications ◽  
Boost Converter ◽  
Energy Sources ◽  
Multilevel Converter ◽  
Three Phase ◽  
Power Application

In recent years, power demand of industrial applications has increased significantly reaching some megawatts. The use of multilevel converters for applications of medium and high powers is proposed as a solution to drawback semiconductor technology. A multilevel converter not only achieves high power ratings, but also enables the use of renewable energy sources. Renewable energy sources such as photovoltaic can be easily interfaced to a multilevel converter system for a high power application. This paper presents the simulation study in Matlab/Simulink of a grid connected photovoltaic three phase Neutral Point Clamped (NPC) inverter with DC/DC boost converter for constant and variable solar radiation.

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