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This paper presents a hybrid vibration power generator based on piezoelectric and electromagnetic mechanisms. The hybrid power generator is composed of a 36 mm*17 mm*0.73 mm piezoelectric cantilever and a 40 mm long electromagnetic tube. Such combination allows the generator to produce high power output using both piezoelectric effect and electromagnetic induction under low-frequency vibrations. The...
Energy storage has been discussed in the electricity industry for many years. Today, energy storage enjoys a growing sense of promise, as many expect it will become a viable part of the electric system over the next decade. However, there are still very real challenges to the cost-effective deployment of storage solutions. The work described in this paper highlights the advantages of techno-economical...
Lebanon imports fuel oil to generate around 94% of its electrical power accompanied with high import fuel price, high losses which lead to electricity outages and environmental degradation. The electricity sector suffers from frequent power blackout of 3 to 16 hours per day in all cities in the country. More than 39% of electricity is generated from private diesel generators. Lebanon's geographic...
This paper presents an energy core-ness based analysis of hybrid distributed energy systems to identify the most important or core nodes in the system. The proposed energy core-ness based analysis is used to compute a one-to-one relation between generation sources, storage nodes and loads, regardless of their distributed location in the system. Results indicate that the proposed energy core-ness analysis...
This paper proposes the active power modulation control scheme of the hybrid photovoltaic (PV) generator and battery for power swing stabilization. The battery which is connected to the DC link of the PV generator, is used to smooth the output power fluctuation of the PV generator during normal operation. During faults, the stored energy of battery can be used for the active power output modulation...
Levels of electricity access in sub-Saharan Africa are low with large populations living far from existing electricity infrastructure. This has led to interest in decentralized electrification solutions like microgrids, which can reach remote communities more quickly. To address a lack of capital to deploy these projects, governments have sought private investment in the sector. Studies have found...
Optimal design of a grid connected hybrid system is a critical topic. Especially, in Japan, the electricity market was deregulated from 2016 spring. Customers became able to choose many new smaller power retailers. The time has come for customers to choose optimal electric power contract. Many customers also focus on home power generators, such as PV and diesel. Because of expensive consignment fee,...
The power produced from PV panel and wind turbine generators are based on weather condition, as a result this system is unreliable. The hybridization of this system with another source such as batteries or diesel generator increases significantly the reliability of the whole system. This paper recommends an optimization method of hybrid solar-wind battery systems based on BSA (Backtracking Search...
The efficiency of autonomous power supply systems based on hybrid wind power plants depends on many factors, both climatic and cost-related. This paper is describes the usage of DC bus voltage as control system variable in order to minimize loses in those systems. In order to evaluate possible regulation range of DC voltage the evaluation of hybrid wind power battery voltage level which would ensure...
This paper presents optimization of hybrid energy system for electrification of Rajasthan Technical University campus located at Kota, Rajasthan in India. The hybrid energy system comprises more than one energy sources such as solar PV-Diesel Generator or solar photo voltaic (PV)-wind turbine (WT)-Diesel Hybrid system. The main reason for hybrid energy system development is the reliability of solar...
In this paper an attempt has been made to control the frequency of stand-alone hybrid power system with a simple fuzzy logic control technique which can be used to fulfill the load demand at remote areas. This hybrid system consists photovoltaic (PV) system, diesel engine generator (DEG) and micro hydro power system. The model of fuel cell system is introduced as an energy storing element to improve...
This paper examines the application of a hybrid HVDC link in a two area power system with the purpose of increasing the inter-regional power transfer. A hybrid HVDC system combines both LCCs and VSCs, and hence it is capable of combining the benefits of both converter technologies, such as reduced cost and power losses due to the LCCs, and ability to connect to weak AC grids due to the VSCs. The mathematical...
The energy demands increment, perishing resources of fossil fuels and growing pollution levels encourage more electricity generation using renewable energy sources such as wind, solar, geothermal, tidal etc. Generation of electricity using high speed wind seems a viable and environment friendly solution to meet energy crisis. However, due to variable nature of wind speed, it is difficult to supply...
This paper presents the optimal hybrid energy system that gives optimum cost of energy production, emissions etc. The computations are done by Homer Pro. This paper proposes a standalone hybrid power system model by considering a metrological data at JNTUK Vizianagaram campus. The proposed model includes PV and Wind sources in combination with Diesel generation. The intermittent nature of Solar and...
This paper deals with residual generator construction and fault detection system design issues based on a hybrid framework. The connection between the parity vectors and diagnostic observers is presented in details. In comparison with existing approaches, the proposed algorithm improves the computational efficiency and therefore the real-time implementation capacity of residual generation. A direct...
A reliable supply of electrical energy is critically important to the United States Armed Forces operating in deployed environments. Reducing energy requirements through utilizing renewable energy platforms, such as solar photovoltaics, can be effective at reducing the operational cost and risk. This work quantifies the impacts of high thermal efficiency structures with integrated solar photovoltaic...
Today, the world is very much concerned about the global warming effects due to the increasing pollutant emissions from various sectors of manufacturing industries. They are majorly using coal based power plants for fulfilling their electricity need. The requirement is of switching some partial load on renewable system and finding alternative fuels that can help in reducing green house gases' emissions...
The presence of the non-linear charges is the most important issue in examining the microgrids. These charges cause the harmonic network, reduce the quality of the power, and cause the difficulty in controlling the frequency, because there is a part of power in other frequencies with no control. This paper investigates the designing the parallel active filter in order to improve the power quality...
This paper proposes differential evolution (DE) algorithm based PID controller for pitch control of the isolated wind-diesel hybrid power system. Simulation of a hybrid power system model has been carried out in a time domain analysis with a step load change of 1%. The wind and diesel power generators frequency and power deviations responses are presented and analyzed. The results are compared with...
The paper describes the application of a flywheel energy storage system (FESS) for reducing the diesel energy consumption during the post high wind transient period in an isolated wind-diesel hybrid power system. The combination of Diesel Generator(DG) with Wind Generator (WG) ensures that there will be continuous supply of active power to the system and can be effectively utilised for critical power...
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