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

Modeling and Control of Grid-Connected Solar-Wind Hybrid Micro-Grid System with Multiple-Input Ćuk DC-DC Converter for Household & High Power Applications

2022 ◽  
Vol 58 ◽  
pp. 191-224
Author(s):  
Peter Anuoluwapo Gbadega ◽  
Olufunke Abolaji Balogun
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Solar Energy ◽  
Renewable Energy Sources ◽  
Maximum Power ◽  
Energy Sources ◽  
Modeling And Control ◽  
Multiple Input ◽  
Micro Grid ◽  
And Control

There is a continuous global need for more energy, which must be cleaner than energy produced from the conventional generation technologies. As such, this need has necessitated the increasing penetration of distributed generation technologies and primarily on renewable energy sources. This paper presents a dynamic modeling and control strategy for a sustainable micro-grid, principally powered by multiple renewable energy sources (solar energy, wind energy and Fuel cell), micro sources (such as diesel generator, micro-gas turbine etc.) and energy storage scheme. More importantly, a current-source-interface, multiple-input dc-dc converter is utilized to coordinate the sustainable power sources to the main dc bus. Thus, for tracking maximum power available in solar energy, maximum power point tracking algorithm is applied. The proposed system is designed to meet load demand, manage power flow from various sources, inject excess power into the grid, and charge the battery from the grid as needed. More so, the proposed converter architecture has reduced number of power conversion stages with less component count, and reduced losses compared to existing grid-connected hybrid systems. This improves the efficiency and reliability of the system. The utilization of energy storage is essential owing to the intermittent nature of the renewable energy sources and the consequent peak power shift between the sources and the load. Following this further, a supervisory control system is designed to handle various changes in power supply and power demand by managing power intermittency, power peak shaving, and long-term energy storage. The entire hybrid system is described given along with comprehensive simulation results that reveal the feasibility of the whole scheme. The system model is designed and simulated in MATLAB SimPowerSystem in order to verify the effectiveness of the proposed scheme.

Interfacing renewable energy sources for maximum power transfer—Part I: Statics

2014 ◽  
Vol 31 ◽  
pp. 501-508 ◽  
Author(s):  
Shlomo Gadelovits ◽  
Alon Kuperman ◽  
Moshe Sitbon ◽  
Ilan Aharon ◽  
Sigmond Singer
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Maximum Power ◽  
Energy Sources ◽  
Power Transfer

Interfacing renewable energy sources for maximum power transfer—Part II: Dynamics

2015 ◽  
Vol 51 ◽  
pp. 1771-1783 ◽  
Author(s):  
Sergei Kolesnik ◽  
Moshe Sitbon ◽  
Shlomo Gadelovits ◽  
Teuvo Suntio ◽  
Alon Kuperman
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Maximum Power ◽  
Energy Sources ◽  
Power Transfer

scholarly journals Mathematical Modeling and Controller for PV System by Using MPPT Algorithm

2021 ◽  
Vol 24 (1) ◽  
pp. 96
Author(s):  
H. I. Issa ◽  
H. J. Mohammed ◽  
L. M. Abdali ◽  
A. G. Al Bairmani ◽  
M. Ghachim
Keyword(s):  
Renewable Energy ◽  
Output Power ◽  
Renewable Energy Sources ◽  
Significant Rise ◽  
Maximum Power ◽  
Energy Sources ◽  
Pv System ◽  
Radiation Level ◽  
Fuel Prices ◽  
Pv Systems

In this research, the study theory of system includes the use of an important source of renewable energy sources (solar source) and linking this system with an electrical load. The world is witnessing a significant rise in fossil fuel prices since the ending of the 20th century and now, this rise in price increases with the decrease in inventory day after day. Therefore, it turned that the field of attention to researchers of power generation to expand in non-conventional energy sources (new and renewable energy sources).New and renewable energy is inexhaustible in use because they rely on renewable natural resources. The mathematical model is an important part of the detailed study for PV systems. As well as study models for photovoltaic systems via the MATLAB/Simulink, this programming environment contains many models for renewable systems intended to perform simulation and analysis.Solar cells system needs to apply the MPPT algorithm due to the instability of external circumstances such as solar radiation and temperature.At a constant temperature of 25 °C, as the radiation level increases, the current and voltage of the module increase, this leads to an increase in output power. At a constant radiation level of 100 W/m2, as the module temperature increases, the current increases and the voltage decreases, this causes the output power to decrease. The maximum power is reached at 17 V and 3.5 A by the MPPT method. The Perturb and Observe algorithm is used to achieve maximum power.

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.

Renewable Energy Sources

IEE Review ◽  
1991 ◽  
Vol 37 (4) ◽  
pp. 152
Author(s):  
Kenneth Spring
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Energy Sources

Power Projects and Covid-19: A Practical Analysis of the Relevance of Force Majeure Clauses under the Standardised Power Purchase and Implementation Agreements of Uganda

2020 ◽  
Vol 1 (2) ◽  
pp. 189-193
Author(s):  
Aisha Naiga ◽  
Loyola Rwabose Karobwa
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Clean Energy ◽  
The State ◽  
Energy Sources ◽  
Policy Goals ◽  
Force Majeure ◽  
Practical Analysis ◽  
Energy Justice

Over 90% of Uganda's power is generated from renewable sources. Standardised Implementation Agreements and Power Purchase Agreements create a long-term relationship between Generating Companies and the state-owned off-taker guaranteed by Government. The COVID-19 pandemic and measures to curb the spread of the virus have triggered the scrutiny and application of force majeure (FM) clauses in these agreements. This article reviews the FM clauses and considers their relevance. The authors submit that FM clauses are a useful commercial tool for achieving energy justice by ensuring the continuity of the project, despite the dire effects of the pandemic. Proposals are made for practical considerations for a post-COVID-19 future which provides the continued pursuit of policy goals of promoting renewable energy sources and increasing access to clean energy, thus accelerating just energy transitions.

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