Design of a Stirling Machine in a Multi-Cylinder Configuration for Microcogeneration

2012 ◽  
Author(s):  
S. Chatterton ◽  
P. Pennacchi ◽  
A. Vania ◽  
R. Ricci ◽  
A. Ghisoni
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Numerical Simulations ◽  
Electrical Power Generation ◽  
Renewable Energy Sources ◽  
Electrical Power ◽  
Energy Sources ◽  
Free Piston ◽  
Single Cylinder ◽  
Stirling Engines

At present, the attention of the market in Stirling engines is increasing for small size applications of electrical power generation. These engines are based on a simple principle of functioning and could employ renewable energy sources. Two main configurations are available on the market: the first is a four-cylinder engine with wobble yoke mechanism and the second is represented by the single-cylinder free-piston concept. The paper is aimed at investigating several multi-cylinder configurations for the improvement of the engine performances. These are evaluated by means of numerical simulations taking into account the dynamics of the mechanism and the thermal aspects of the cycle. In particular the attention of the authors is focused on the design of a new configuration with a higher number of cylinders.

Design of a Novel Multicylinder Stirling Engine

2015 ◽  
Vol 137 (4) ◽  
Author(s):  
Steven Chatterton ◽  
Paolo Pennacchi
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Output Power ◽  
Thermal Efficiency ◽  
Renewable Energy Sources ◽  
Electrical Power ◽  
Combined Heat And Power ◽  
Energy Sources ◽  
Stirling Engines ◽  
Working Principle

Stirling engines are machines based on a simple working principle and are well known for their theoretical high thermal efficiency. Technical drawbacks related to the high temperatures required for achieving high values of thermal efficiency and output power have limited their spread to low-power applications. Stirling engines can operate with almost any source of heat. For this reason, these engines are currently installed in applications with renewable energy sources for combined heat and power generation (CHP), where the mechanical output power is usually converted into electrical power. The paper is focused on the design and analysis of a novel mechanical configuration with a higher number of cylinders than current commercial solutions. The performances of several multicylinder configurations are evaluated via numerical simulations, taking into account the dynamics of the mechanism and the thermal aspects of the cycle. Finally, a prototype of the main mechanism, which allows the number of cylinders to be increased, is introduced and briefly described.

scholarly journals Small Scale Vertical Axis Wind Turbine

2021 ◽  
Author(s):  
Sahishnukumar Shah
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Wind Turbine ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Electrical Power ◽  
Vertical Axis ◽  
Energy Sources ◽  
Small Scale ◽  
Vertical Axis Wind Turbine

The small-scale vertical axis wind turbine is designed and modeled in this project, considering all aspects of wind turbine such as Blade design, stator design, rotor design and converter system design. Electric Power has become a prime necessity for any country for economic development. The conventional fuel sources for power generation are depleting fast. The favorable alternatives are renewable energy sources. Although more invention has to be carried out in the field of renewable energy sources, every little effort in this direction may provide a solution to reach most economical power generation point. Hence the same topic was selected for Masters Project. The goal of this project is to design a small scale Vertical Axis Wind Turbine, which is capable of producing electrical power even with low wind velocity. It can be placed on road dividers, sidetracks of train or remote places i.e. villages, military camps, where it is not economical to transmit power from power plants. Implementation of such project would reduce the dependence of an industry or remote houses, on electricity board.

Grid integration of hybrid renewable energy source using Aligned Multilevel Inverter

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Motaparthi Nagaraju ◽  
Kiran Kumar Malligunta
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Electrical Power Generation ◽  
Renewable Energy Sources ◽  
Electrical Power ◽  
Maximum Power ◽  
Multilevel Inverter ◽  
Pv System ◽  
Partial Shading ◽  
Hybrid Renewable Energy

Abstract Grid connected hybrid renewable energy sources (RES) are main challenges nowadays. Interconnecting of two or more RES is called hybrid system and battery is optional in this kind of systems where grid is in active. The normal inverters are unable to produce sinusoidal voltages and this will cause many problems in grid connected system. Hence, many topologies of multilevel inverters are proposed which can able to produce sinusoidal output voltage. However, the cost and operational complexity will increase due to increasing number of switches. In order to reduce total number of switches, an Aligned Multilevel Inverter (AMI) configuration of three phase is implemented in this paper. Wind energy-based electrical power generation system and solar energy based electrical power generation systems are considered for interconnection. Energy storage devices such as batteries are not incorporated to system since considered grid is in active mode. Maximum power point tracker (MPPT) devices are available to extract maximum power from photovoltaic arrays and wind turbines, hence a boost converter is considered as MPPT converter for wind turbine and proposed AMI also works as MPPT converter for PV by using proposed controller. Hence extra DC–DC converters are not essential for PV system for MPPT, resulting in reduction of overall system cost. Also, the modified invasive weed optimization (MIWO) based algorithm is proposed for PV system to harvest maximum energy under partial shading conditions. The proposed MIWO is compared with particle swarm optimization (PSO) and grey wolf optimization (GWO) to enhance the performance of proposed algorithm. Extensive results are validated with Hardware-in-Loop (HIL) designed on OPAL-RT platform.

scholarly journals Design and Monitoring of Solar Power Generation System for Domestic Applications using Matlab/Simulink

2021 ◽  
Vol 9 (VI) ◽  
pp. 3733-3739
Author(s):  
Mr. M. Rajasekhar
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Solar Energy ◽  
Cell Model ◽  
Photovoltaic Effect ◽  
Renewable Energy Sources ◽  
Electrical Power ◽  
Radiant Energy ◽  
Energy Sources ◽  
And Performance

In recent years, it is getting attention for renewable energy sources such as solar energy, fuel cells, batteries or ultra capacitors for distributed power generation systems.solar energy maintains life on earth and it is an infinite source of clean energy.Solar radiant energy accounts for most of the usable renewable energy on this earth. Photovoltaic (PV) is a method of generating electrical power by converting solar radiation into direct current electricity using semiconductor that exhibit the photovoltaic effect. Since last five decades, numerous studies have been performed on different design aspects and performance characteristics of Photovoltaic (PV) cells with a common objective of producing fully integrated PV modules to compete with the traditional energy sources. There is an increasing trend for the use of solar cells in industry and domestic appliances because solar energy is expected to play substantial role in future smart grid as distributed renewable source. The proposed model is based on a behavioral cell model for modeling solar radiance to electricity conversion and an electrical driver interface for implementing electrical characteristic of power limited systems in power simulations.

scholarly journals Small Scale Vertical Axis Wind Turbine

2021 ◽  
Author(s):  
Sahishnukumar Shah
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Wind Turbine ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Electrical Power ◽  
Vertical Axis ◽  
Energy Sources ◽  
Small Scale ◽  
Vertical Axis Wind Turbine

The small-scale vertical axis wind turbine is designed and modeled in this project, considering all aspects of wind turbine such as Blade design, stator design, rotor design and converter system design. Electric Power has become a prime necessity for any country for economic development. The conventional fuel sources for power generation are depleting fast. The favorable alternatives are renewable energy sources. Although more invention has to be carried out in the field of renewable energy sources, every little effort in this direction may provide a solution to reach most economical power generation point. Hence the same topic was selected for Masters Project. The goal of this project is to design a small scale Vertical Axis Wind Turbine, which is capable of producing electrical power even with low wind velocity. It can be placed on road dividers, sidetracks of train or remote places i.e. villages, military camps, where it is not economical to transmit power from power plants. Implementation of such project would reduce the dependence of an industry or remote houses, on electricity board.

Integration of Reversing Voltage Multilevel Inverter Topology with High Voltage Gain boost Converter for Distributed Generation

2018 ◽  
Vol 9 (1) ◽  
pp. 210
Author(s):  
S. Nagaraja Rao ◽  
D. V. Ashok Kumar ◽  
Ch. Sai Babu
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Alternative Energy ◽  
Pulse Width Modulation ◽  
Pulse Generator ◽  
Renewable Energy Sources ◽  
Electrical Power ◽  
Multilevel Inverter ◽  
Energy Sources ◽  
Voltage Level

<table width="0" border="1" cellspacing="0" cellpadding="0"><tbody><tr><td valign="top" width="593"><p>The conventional energy sources available to us are on the verge of depletion. This depletion of conventional energy source leads to concentrate more on alternative energy sources. In this research, the focus is on the role of renewable energy sources (RES) in electrical power generation. Even though, the RES based plants produce power, we cannot directly connect it to the grid or loads. Because, the voltage ratings and nature supply of RES plants would not match with the load. Hence, this is a major issue for connecting RES plants to load or other utility. The power electronic converters are extensively being used as a link between load and supply. As most of the renewable energy power generation is DC in nature, the DC-DC converter is used to increase the voltage level and this DC must be converted to AC for grid connection. Therefore, inverters are used for DC to AC conversion. In this paper, the DC supply of renewable energy is connected to load by using cascade DC-DC converters along with a proposed reversing voltage (RV) multilevel inverter (MLI). The first DC-DC converter is used to enhance the voltage level with high gain and second converter is used to split the DC supply for inverter convenience. In this paper, proposed RV symmetrical and asymmetrical MLI generates 7, 9, 11, 13 and 15 levels with only ten power switches. In-phase level-shifted triangular carrier type sine pulse width modulation (PWM) technique is employed to trigger the commutating switches of proposed RV MLI. Switches of H-Bridge for reverse voltage appearance across the load are triggered by simple pulse generator. The circuits are modeled and simulated in MATLAB/SIMULINK software. Results are presented and discussed.</p></td></tr></tbody></table>

scholarly journals Agricultural Residue Management for Sustainable Power Generation: The Poland Case Study

2021 ◽  
Vol 11 (13) ◽  
pp. 5907
Author(s):  
Valerii Havrysh ◽  
Antonina Kalinichenko ◽  
Anna Brzozowska ◽  
Jan Stebila
Keyword(s):  
Power Generation ◽  
Spatial Distribution ◽  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Agricultural Waste ◽  
Energy Utilization ◽  
Evaluation Methodology ◽  
Energy Sources ◽  
Energy Potential ◽  
Agricultural Residue

The European Union has set targets for renewable energy utilization. Poland is a member of the EU, and its authorities support an increase in renewable energy use. The background of this study is based on the role of renewable energy sources in improving energy security and mitigation of climate change. Agricultural waste is of a significant role in bioenergy. However, there is a lack of integrated methodology for the measurement of its potential. The possibility of developing an integrated evaluation methodology for renewable energy potential and its spatial distribution was assumed as the hypothesis. The novelty of this study is the integration of two renewable energy sources: crop residues and animal husbandry waste (for biogas). To determine agricultural waste energy potential, we took into account straw requirements for stock-raising and soil conservation. The total energy potential of agricultural waste was estimated at 279.94 PJ. It can cover up to 15% of national power generation. The spatial distribution of the agricultural residue energy potential was examined. This information can be used to predict appropriate locations for biomass-based power generation facilities. The potential reduction in carbon dioxide emissions ranges from 25.7 to 33.5 Mt per year.

scholarly journals Power Generation In Nigeria: The Past, Present And The Future

2020 ◽  
pp. 1-8
Author(s):  
Adeoye Samuel ◽  
◽  
Oladimeji TT ◽  
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Electrical Power ◽  
Electrical Energy ◽  
Power Imbalance ◽  
Power Demand ◽  
Electrical Power System ◽  
Hydro Power ◽  
The Future

The goal of power sector in Nigeria is to efficiently and reliably transmit electrical power to all parts of the country which are made up of thirty-six states of the federation and the federal capital territory. The constituents of electrical power system are the generation, transmission, distribution and the utilization of electrical energy. There is gross power imbalance between the generation and the required power demand which has culminated into a defective economy in the last three decades. This paper therefore examines the power imbalance between the generation and power demand by the consumers and therefore stresses the need to harness the opportunity of renewable energy generation close to the gap between the power generation and power demand. This will help in transmitting and distributing efficient, effective, reliable power to consumers and improve both human and capital development. The availability of renewable energy sources such as sun, wind and small hydro power will be explored for the future of power generation in the country to fill in the gap between power generation and demand in Nigeria

scholarly journals Development of a Micro grid with Renewable Energy Sources with Feedback Controller

2019 ◽  
Vol 8 (11) ◽  
pp. 2014-2018
Keyword(s):  
Renewable Energy ◽  
Electricity Generation ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Electrical Power ◽  
Energy Sources ◽  
Military Operations ◽  
Urban Centers ◽  
Industrial Projects ◽  
Micro Grid

To make micro grid with renewable energy and to over come the technical challenges and economy base and policy and regulatory challenges . From the natural wastage we can generate the Electricity. Thus, the Electrical Power or Electricity is available with a low cost and pollution free to anyplace in the world at all times. This process divulge a unequaled step in electricity generation and this type of generation is maintain the ecological balance. We can have an uninterrupted power supply irrespective of the natural condition without any kind of environmental pollution. More influence this process relent the less production cost for electricity generation. Micro grids have long been used in remote areas to power off-grid villages, military operations or industrial projects. But increasingly they are being used in cities or towns, in urban centers. Here we try a proto type of micro grid with renewable energy sources.

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