scholarly journals Using Y-source network as a connector between turbine and network in the structure of variable speed wind turbine

2021 ◽  
Vol 12 (3) ◽  
pp. 1644
Author(s):  
Mahmoud Zadehbagheri ◽  
Tole Sutikno ◽  
Rahim Ildarabadi
Keyword(s):  
Power Generation ◽  
Air Pollution ◽  
Degrees Of Freedom ◽  
Electrical Power ◽  
Clean Energy ◽  
Voltage Gain ◽  
Variable Speed ◽  
Simultaneous Control ◽  
Variable Speed Wind Turbine

Environmental factors such as air pollution and increase in global warming by using polluting fuels are the most important reasons of using renewable and clean energy that runs in global community. Wind energy is one of the most suitable and widely used kind of renewable energy which had been in consideration so well. This paper introduces an electric power generation<br />system of wind based on Y-source and improved Y-source inverter to deliver optimal electrical power to the network. This new converter is from impedance source converters family. This presented converter has more degrees of freedom to adjust voltage gain and modulation. Also, by limiting the range of simultaneous control (shooting through) while it maintains the<br />highest power of maximizer, it can operate in higher modulation range. This causes the reduce of stress in switching and thus it will improve the quality of output. Recommended system had been simulated in MATLAB/Simulink and shown results indicate accurate functionality.

scholarly journals MESIN PENGERING PRODUK PERTANIAN BERTENAGA PANAS BUMI

2016 ◽  
Vol 10 (2) ◽  
pp. 153
Author(s):  
Achmad Hasan
Keyword(s):  
Power Generation ◽  
Electrical Power Generation ◽  
Geothermal Energy ◽  
Electrical Power ◽  
Clean Energy ◽  
Drying Process ◽  
High Rainfall ◽  
Geothermal Potential ◽  
The World

Indonesia as the biggest geothermal potential country in the world. There are252 geothermal locations have been identified that distributed along a volcanicbelt extending from Sumatera, Java, Nusa Tenggara, Sulawesi, Maluku untilPapua. Utilization of this energy be side for electrical power generation, it is usedfor non electrical (direct uses) as well. In the agriculture area with high rainfall,drying process can decrease quality of crop products. The tools doesn’t produceemission and doesn’t make noises and also as clean energy. By optimization theutilization of geothermal energy that available surrounding the agriculture areacould increase the local people economic.

Reducing Air Pollution from Electric Power-generation in China

1991 ◽  
Vol 18 (3) ◽  
pp. 243-248
Author(s):  
Zhiyong Wang
Keyword(s):  
Power Generation ◽  
Air Pollution ◽  
Electric Power ◽  
Oil Recovery ◽  
Power Plants ◽  
Clean Energy ◽  
Air Pollutant ◽  
Electric Power Generation ◽  
Planning And Management ◽  
Technical Planning

This paper addresses current and future concerns regarding the air-pollution situation in China, and focuses on reduction of particulates', SO2, and CO2, emissions in China's electric power-generation sector. Technical aspects of control methods include an assessment of innovative approaches such as enhanced oil recovery (EOR). Suggestions are made pertaining to the technical planning and management aspects of air-pollutant control.In a technological context, improving coal-use efficiency, increasing the proportion of coal pretreatment, and using EOR technology, should be considered; these measures have proven effective and relatively economical elsewhere. If the measures could be adopted in China's electric power-generation sector, as much as about 50% of the particulates, 34% of the SO2, and 95% of the CO2, emitted from power-plants, could be removed. If fully engaged, these actions would improve China's air environment significantly.In a planning and management context, five suggestions are made with respect to air quality regulations: administrative measures, coal prices, developing ‘clean’ energy systems, reforestation, and transferring to new energy-saving and pollution-controlling technologies. In addition to domestic efforts, active engagement in international cooperation would be extremely beneficial to China.

scholarly journals Simulation of variable speed wind turbines based on open-source solutions: Application to bachelor and master degrees

2021 ◽  
pp. 002072092098097
Author(s):  
Ana Fernández-Guillamón ◽  
Ángel Molina-García
Keyword(s):  
Power Systems ◽  
Wind Turbine ◽  
Open Source ◽  
Variable Speed ◽  
Virtual Experiments ◽  
Structure Control ◽  
Software Packages ◽  
Variable Speed Wind Turbine ◽  
Mechanical Models

This paper describes variable speed wind turbine (Types 3 and 4, IEC 61400–27-1) simulations based on an open-source solution to be applied to Bachelor and Master Degrees. It is an attempt to improve the education quality of such sustainable energy by giving an open-source experimental environment for both undergraduate and graduate students. Indeed, among the renewable sources, wind energy is currently becoming essential in most power systems. The simulations include both one–mass and two–mass mechanical models, as well as pitch angle control. A general overview of the structure, control, and operation of the variable speed wind turbine is provided by these easy-to-use interactive virtual experiments. In addition, a comparison between commercial and open-source software packages is described and discussed in detail. Examples and extensive results are also included in the paper. The models are available in Scilab-Xcos file exchange for power system education and researcher communities.

scholarly journals Electrical power generation with PEM FC using hydrogen supply through Mg-Ni reaction with water

Energetika ◽  
2016 ◽  
Vol 62 (1-2) ◽  
Author(s):  
Dalius Girdzevičius ◽  
Darius Milčius
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Hydrogen Production ◽  
Hydrogen Generation ◽  
Hydrogen Plasma ◽  
Electrical Power ◽  
Clean Energy ◽  
Xrd Analysis ◽  
Magnesium Hydride ◽  
Reaction With Water

Hydrogen is considered an energy vector of the future because of its potential use for clean energy generation. Portable electronic devices can be powered when hydrogen is supplied to fuel cells. In order to avoid massive equipment for hydrogen storage, direct hydrogen production can be achieved on-site during the reaction between metals/metal alloys/metal hydrides and water. Magnesium hydride offers great perspective for widespread applications as its weight yield of hydrogen reaches 6.4% according to the reaction with water and it can even increase to 15.2% if water produced in the fuel cell is used in the reaction again. In the  present work, Mg powder with the  content of Ni was synthesized under low temperature hydrogen plasma conditions changing the DC magnetron current from 0.5 to 1 A. As pure Mg powder was immersed into hydrogen plasma, the simultaneous hydrogenation process was ensured. Nickel was chosen as a catalyst capable to influence the growth of hydride. The process of electric power generation was investigated when reaction between modified Mg powder and water was applied to laboratory-built equipment consisting of a reactor for hydrogen production, gas dryer before H2 introduction to the  fuel cell, fuel cell, load and energy meter. Solutions of acetic acid and sodium chloride were used as promoters during powder-water reactions. The characterisation of predicted magnesium hydride powder was done using scanning electron microscopy, electron dispersive spectroscopy and X-ray diffraction. XRD analysis showed only Mg, MgO and Ni peaks indicating that hydrogen generation during powder-water reaction was evoked because of microgalvanic corrosion at Mg-Ni intersections.

DESIGN, SIMULATION AND IMPLEMENTATION MONITORING SYSTEM FOR SYSTEM CONTROL C4 FEEDING PUMP FOR FEED VAPORIZATION IN THE BUTADIENE PLANT

2020 ◽  
Vol 1 (1) ◽  
pp. 31-35
Author(s):  
Fahmi Yunistyawan ◽  
Yunistyawan J Berchmans ◽  
Gembong Baskoro
Keyword(s):  
Motor Control ◽  
Control System ◽  
Field Operator ◽  
System Control ◽  
Variable Speed ◽  
Variable Speed Drive ◽  
Software And Hardware ◽  
Discharge Pressure ◽  
Selection Of

This study implements the auto start control system on an electric motor 3 phase C4Feeding pump when the discharge pressure is low-low (4.3 kg /cm²). The C4 feeding pumpmotor was initially manually operated from the local control station, this was very ineffectiveand inefficient because it still relied on the field operator to operate the pump motor and whenthe plant was in normal operating it is very risk if the field operator late to operate motor then itwill impact to quality of the product, and if the delay time to operate motor is too long then planthave to shut down, therefore improvement is needed in the C4 feeding pump motor controlsystem. In this paper, various types of 3-phase motor control are explained which allow it to beapplied to the C4 feeding pump motor that are on-off, inverter, and variable speed drive andefficient selection of the three systems control of the motor. Software and hardware used in thisthesis work are DCS CENTUM VP Yokogawa.

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