Single-Phase Cascaded Grid Connected Multilevel Inverter for Interfacing Renewable Energy Sources With Microgrid

2015 ◽  
Vol 137 (5) ◽  
Author(s):  
I. Gerald Christoper Raj ◽  
M. Kaliamoorthy ◽  
V. Rajasekaran ◽  
R. M. Sekar
Keyword(s):  
Renewable Energy ◽  
Digital Signal Processor ◽  
Single Phase ◽  
Sliding Mode ◽  
Renewable Energy Sources ◽  
Boost Converter ◽  
Maximum Power ◽  
Multilevel Inverter ◽  
Energy Sources ◽  
Pv Array

In this paper, a novel single-phase cascaded grid connected multilevel inverter (MLI) is proposed for feeding power to microgrid from renewable energy sources (RESs). The proposed inverter is capable of feeding power to microgrid with low total harmonic distortion (THD). The proposed inverter consists of two H bridge inverters connected in cascade, namely, upper and lower inverters. The upper inverter is fed from photovoltaic (PV) array through a DC–DC boost converter, whereas the lower inverter is fed from wind turbine (WT) coupled to permanent magnet synchronous generator (PMSG) through an uncontrolled rectifier and DC–DC boost converter. The upper inverter operates at high frequency, whereas the lower inverter operates at fundamental frequency. To extract maximum power from the WT and PV array, a sliding mode control based maximum power point tracker (MPPT) is used. The proposed inverter is connected to the single phase 230 V, 50 Hz grid, and the control algorithm is implemented in the SPARTAN 3A digital signal processor (DSP) board. The proposed inverter is simulated using matlab/simulink, and detailed experimental results are presented to show the efficacy of the proposed inverter under different environmental conditions.

Robust DC-DC Boost Converter Control for Integration of Fuel Cell with Renewable Energy Sources

2020 ◽  
Vol 49 ◽  
pp. 68-83
Author(s):  
Asegid Belay Kebede ◽  
Getachew Biru Worku
Keyword(s):  
Renewable Energy ◽  
Steady State ◽  
Fuel Cell ◽  
Fuzzy Logic Controller ◽  
Sliding Mode ◽  
Renewable Energy Sources ◽  
Boost Converter ◽  
Energy Sources ◽  
Power Electronic ◽  
Modeling And Analysis

Renewable energy sources, such as photovoltaic, fuel cell and wind energy are becoming a sustainable alternative to non-renewable sources like fossil fuel. However, to integrate these energies into the grid, power electronic converters plays major role due to their power conditioning capability, reliability and effectiveness. In this paper, design, modeling and analysis of a DC-DC boost converter with robust controlling technique, fuzzy sliding mode controlling strategy has been developed and a brief comparison has been performed with a sliding mode controller and a clasical PID controller which employed both current and a voltage control loop. The system is designed to achieve a fast dynamic response, zero steady-state error, and satisfactory stability. To realize that a detailed mathematical derivation of sliding mode fuzzy logic controller and a linearized small signal model of the power electronic converter around its DC steady state operating point is performed. Finally, in order to evaluate the designed system, a software simulation based on MATLAB/ Simulink environment is developed and results of the simulation shows the effectiveness of the proposed techniques.

scholarly journals A New VSAS approach for Maximum Power Tracking for Renewable Energy Sources (RES)

2013 ◽  
Vol 42 ◽  
pp. 708-717 ◽  
Author(s):  
Nacer K. M'Sirdi ◽  
Abdelhamid Rabhi ◽  
Mouna Abarkan
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Maximum Power ◽  
Energy Sources ◽  
Maximum Power Tracking

scholarly journals Design of DC/DC Boost Converter for Photovoltaic Systems Applications 

2021 ◽  
Vol 31 (3) ◽  
pp. 83-88
Keyword(s):  
High Performance ◽  
Renewable Energy Sources ◽  
Boost Converter ◽  
Maximum Power ◽  
Energy Sources ◽  
Pv System ◽  
Stochastic Variation ◽  
Maximum Power Point ◽  
Environment Temperature ◽  
Power Point

Renewable energy sources are growing rapidly and becoming an essential part of the national electricity system. The photovoltaic (PV) system is considered an appropriate option due to its advantages over traditional fossil energy sources. However, this energy source is affected by the stochastic variation of irradiance parameters and environment temperature, etc. Therefore, improving the efficiency of this PV system is always an interesting topic to scientists and many researches. This paper focuses on studying and designing DC/DC boost converter with integrated the Maximum Power Point Tracking (MPPT) algorithm using a hybrid method. The method of finding the maximum power point is developed based on many modern algorithms. Design equipment is analyzed, evaluated and gave positive results with high performance.

Development of a Basic Voltage Source for a Micro Grid Based on Renewable Energy Sources

2021 ◽  
Vol 1 (42) ◽  
pp. 39-43
Author(s):  
Leonid Yuferev ◽  
Keyword(s):  
Renewable Energy ◽  
Single Phase ◽  
Block Diagram ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Electrical Network ◽  
Voltage Source ◽  
Energy Sources ◽  
Micro Grid ◽  
Alternating Voltage

At the heart of a micro-grid that includes several sources of electrical energy, including renewable energy, there must be a base (reference) source that sets the voltage and frequency in the network. (Research purpose) The research purpose is in developing a basic voltage source of a micro-grid, which includes renewable energy sources. (Materials and methods) The article shows that the sources of electrical energy are different, but the main requirement for them is to be able to supply voltage to the electrical network at any time, there is a standard voltage scale in the network. For a micro-grid, which will include various sources of electrical energy with a total power of up to 25 kW, you can limit yourself to a voltage of 220 V and a single-phase electrical network. (Results and discussion) The article presents a block diagram; technical characteristics and electrical diagram of the inverter of a single-phase basic voltage source; a method for calculating the output filter of the inverter based on pulse-width modulation technology. (Conclusions) When using renewable energy sources in the micro-grid, it is necessary to take into account that there are periods of time in which they do not generate electrical energy and choose as the base one that will not have such moments, or you need to use a temporary electricity storage device. It is possible to use a chemical source or a battery of accumulators as a base source. When creating a micro-grid of alternating voltage, an inverter is added to these sources from constant voltage to alternating voltage. The article presents a block diagram of a base voltage source with an AC output reference voltage to create a micro grid with a power of up to 25 kW.

Sign in / Sign up

Export Citation Format

Share Document