International Journal of Electrical Components and Energy Conversion最新文献

Analyzing Power Losses in Ghazni City's Electricity Distribution Network and Strategies for Minimizing Them 加兹尼市配电网电力损耗分析及减少策略

International Journal of Electrical Components and Energy Conversion Pub Date : 2023-04-15 DOI: 10.11648/j.ijecec.20230901.11

Massoud Danishmal, Abdulilah Rasoly, Hashmatullah Zeerak, Sayed Ahmad Zamir Fatemi

引用次数: 0

Minimization of the Electromagnetic Torque Ripple of a Synchronous Reluctance Generator Using External Rotor Excitation 采用外转子励磁的同步磁阻发电机电磁转矩脉动最小化

International Journal of Electrical Components and Energy Conversion Pub Date : 2021-10-15 DOI: 10.11648/J.IJECEC.20210702.12

J. Gonzalez, C. Hernández, M. Arjona

{"title":"Minimization of the Electromagnetic Torque Ripple of a Synchronous Reluctance Generator Using External Rotor Excitation","authors":"J. Gonzalez, C. Hernández, M. Arjona","doi":"10.11648/J.IJECEC.20210702.12","DOIUrl":"https://doi.org/10.11648/J.IJECEC.20210702.12","url":null,"abstract":"This paper presents an approach to minimize the electromagnetic torque ripple of a synchronous reluctance generator (SynRG) with a magnetic field created by externally excited rotor coils. The synchronous reluctance machine is widely used in low and medium power systems such as wind power generation and new electric vehicle technologies. This paper proposes a rotor topology with flux barriers and direct current excited coils that reduce the torque ripple and replace the permanent magnets used in other reluctance rotor topologies. First, the initial rotor design, without excitation coils, is optimized to obtain a new rotor structure that reduces the electromagnetic torque ripple. In this work, the optimization of the rotor geometry was achieved by using genetic algorithms and the finite element method to optimize and parameterize the main components of the machine. In the optimized rotor model, an external electronic converter is included to feed the coils positioned between the magnetic flux barriers and the segments formed by the ferromagnetic material of the rotor. Finally, the electrical and magnetic machine variables obtained from implementing the coils into the optimized rotor are compared to the initial rotor structure operating under nominal load conditions to demonstrate the advantage of this topology in minimizing the electromagnetic torque ripple.","PeriodicalId":431098,"journal":{"name":"International Journal of Electrical Components and Energy Conversion","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117284865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Historical Overview, Misconceptions and Suggestive Measures of Lightning- A Bangladesh Perspective 闪电的历史回顾、误解和暗示性措施——以孟加拉国为例

International Journal of Electrical Components and Energy Conversion Pub Date : 2021-10-05 DOI: 10.11648/J.IJECEC.20210702.11

Rosaidul Mawla, N. Sultana

{"title":"A Historical Overview, Misconceptions and Suggestive Measures of Lightning- A Bangladesh Perspective","authors":"Rosaidul Mawla, N. Sultana","doi":"10.11648/J.IJECEC.20210702.11","DOIUrl":"https://doi.org/10.11648/J.IJECEC.20210702.11","url":null,"abstract":"Every year Bangladesh experiences high density of lightning as it is a tropical country. In recent years, lightning related deaths and injuries have increased in Bangladesh. In 2016 due to lightning, 81 people have died in just two days. Therefore, the GoB has acknowledged lightning as natural disaster. The survey portrayed that around 70% population explain their belief that it is nothing but ray of light of God and it comes down to earth to punish the sinners. The rest people made an attempt to explain the lightning at their own way. About the lightning safety, approximately 80% of the surveyed people are still yet to acquire basic knowledge on lightning safety and around 90% interviewers acknowledge that they donot trust or relay on the forecasting and monitoring by government on weather and climate change. Still people are not educated on consequences of lightning. However, the paper reviews the lighting safety and awareness programs conducted around the world. It also portrays an overview of lightning history along with the misconceptions of lightning. It also highlighted the surveyed summary of the misconceptions of lightning. Finally, some suggestions are recommended about lightning safety and awareness for Bangladeshi people.","PeriodicalId":431098,"journal":{"name":"International Journal of Electrical Components and Energy Conversion","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124940285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modelling and Optimization of a Carbon Capturing Membrane Using Computational Fluid Dynamics with Case Study 基于计算流体动力学的碳捕获膜建模与优化与实例研究

International Journal of Electrical Components and Energy Conversion Pub Date : 2021-06-22 DOI: 10.11648/J.IJECEC.20210701.14

Syed Abdul Moiz Hashmi, Rabia Sabir, Adnan I. Ahmed

{"title":"Modelling and Optimization of a Carbon Capturing Membrane Using Computational Fluid Dynamics with Case Study","authors":"Syed Abdul Moiz Hashmi, Rabia Sabir, Adnan I. Ahmed","doi":"10.11648/J.IJECEC.20210701.14","DOIUrl":"https://doi.org/10.11648/J.IJECEC.20210701.14","url":null,"abstract":"IGCC power plant is the one in which coal is gasified and then the energy is used to drive both gas turbine and steam turbines to produce energy. As the industrial revolution is progressing more and more carbon dioxide is being added to the environment every single day which is leading the world towards the biggest environmental hazards we have ever faced, global warming being the leading consequence, so capturing the carbon dioxide which is emitted from sources like power plants is of the utmost importance. The main idea of this research paper is to provide an innovative way of capturing carbon dioxide emissions from a coal powered power plant. This research paper discusses the design and modeling of a carbon capturing membrane which is being used in an IGCC power plant to capture carbon dioxide from its exhaust gases. The modeling and design of the membrane is done using CFD software namely Ansys workbench. The design and modeling is done using two simulations, one describes the design and structure and the second one demonstrates the working mechanism of the membrane. This paper also briefly discusses IGCC which is environmentally benign compared to traditional pulverized coal-fired power plants, and economically feasible compared to the natural gas combine cycle (NGCC). IGCC power plant is more diverse and offers flexibility in fuel utility. This paper also incorporates a PFD of integrated gasification power plant with the carbon capturing membrane unit integrated in it.","PeriodicalId":431098,"journal":{"name":"International Journal of Electrical Components and Energy Conversion","volume":"332 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122333046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling of Alternating Current Motor Performance for Increased Production Using Fuzzy Logic Controller 基于模糊逻辑控制器的增产交流电机性能建模

International Journal of Electrical Components and Energy Conversion Pub Date : 2021-06-09 DOI: 10.11648/J.IJECEC.20210701.13

N. B. Ngang, B. Kazeem, U. Ikechukwu, Aneke Nnamere Ezekiel

{"title":"Modeling of Alternating Current Motor Performance for Increased Production Using Fuzzy Logic Controller","authors":"N. B. Ngang, B. Kazeem, U. Ikechukwu, Aneke Nnamere Ezekiel","doi":"10.11648/J.IJECEC.20210701.13","DOIUrl":"https://doi.org/10.11648/J.IJECEC.20210701.13","url":null,"abstract":"The low productivity experienced in our industries is as a result of not imbibing intelligence in its production mechanism. We know that induction motors are reliable, robust and with good operating characteristics. A means of starting, regulating and controlling operating parameters are very necessary to improve motor efficiency. This low productivity witnessed in our brewery industry is surmounted by modeling of alternating current (a.c) motor performance for increased production output using fuzzy logic controller. To achieve this it is done in this manner, characterizing and modeling a conventional AC motor so as to establish its operational features while working on variable frequency drive (VFD) control model with known production output, designing a rule base for the use of fuzzy controller for a stable and improved production output of AC motor and designing SIMULINK model for the performance of AC motor under operational condition for an increased output using fuzzy controller for a brewery industry. The results obtained are the highest conventional quantity of bottles of beer produced was 3240 while that of fuzzy controller was 3245 at a stable time of 4 through 10 seconds. With these results obtained, it shows there is an improvement in the production capacity in brewery industry when fuzzy controller is incorporated in the system.","PeriodicalId":431098,"journal":{"name":"International Journal of Electrical Components and Energy Conversion","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131379817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ocean Power from Breaking Waves and Electrical Energy Conversion 破浪产生的海洋动力和电能转换

International Journal of Electrical Components and Energy Conversion Pub Date : 2021-01-30 DOI: 10.11648/J.IJECEC.20210701.12

B. Shankar

引用次数: 0

The Effects of Electromagnetic Radiation on Human Body Fluids by Simulation Using Replacement Fluids at a Frequency of 900 Mhz 900兆赫频率下电磁辐射对人体体液的影响

International Journal of Electrical Components and Energy Conversion Pub Date : 2021-01-25 DOI: 10.11648/J.IJECEC.20210701.11

R. H. Arjadi, P. Wibowo, Anita Silvanawati

{"title":"The Effects of Electromagnetic Radiation on Human Body Fluids by Simulation Using Replacement Fluids at a Frequency of 900 Mhz","authors":"R. H. Arjadi, P. Wibowo, Anita Silvanawati","doi":"10.11648/J.IJECEC.20210701.11","DOIUrl":"https://doi.org/10.11648/J.IJECEC.20210701.11","url":null,"abstract":"In line with technological developments, cell phones are not only used as a means of communication, but are also used for other activities. However, there is an indirect negative impact caused by the electromagnetic field radiation from this device. As well as disrupting the work system in the human body, including changes in heat energy in the tissues of the human body. Research on the effect of electromagnetic radiation on human body fluids has been carried out with simulations using replacement fluids at a frequency of 900 Mhz. Signal generators are used to simulate the emissivity of a cell phone with a transmit power of more than 3.4 times or 5.34 dB of the power emitted by a cell phone. The results of measurements and calculations in the study showed no significant effect on temperature increases or changes in body fluid color. The result of the calculation of the SAR (Specific Absorption Rate) value of the maximum emissivity signal produced is 109.46 dBµV - 0.3 V/m, for the conductivity and density of body fluids is 7.46 kg/m3, and shows that it is still below the threshold. the radiation limit permitted by the FCC is 1.6 W/kg, and ICNIRP 2.0 W/kg. It should be noted that the measurement results obtained are the results of measurements including environmental conditions where there is still wave interference from other sources (noise), as well as a relatively short measurement time.","PeriodicalId":431098,"journal":{"name":"International Journal of Electrical Components and Energy Conversion","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129527220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Analysis on Electromagnetic Force Properties of End Windings in Turbo-Generators 汽轮发电机端部绕组电磁力特性分析

International Journal of Electrical Components and Energy Conversion Pub Date : 2020-12-31 DOI: 10.11648/J.IJECEC.20200602.12

Guiji Tang, Hong-Chun Jiang, Yu‐Ling He, G. Vakil

{"title":"Analysis on Electromagnetic Force Properties of End Windings in Turbo-Generators","authors":"Guiji Tang, Hong-Chun Jiang, Yu‐Ling He, G. Vakil","doi":"10.11648/J.IJECEC.20200602.12","DOIUrl":"https://doi.org/10.11648/J.IJECEC.20200602.12","url":null,"abstract":"Electromagnetic forces on the end windings will stimulate intensive vibrations and cause insulation wearing, and the vibration wear will further induce the coil short circuit. Eventually accidents and losses will be brought. Therefore, it is of great significance to study the electromagnetic force properties of end windings. This paper studied on the electromagnetic force properties of end windings in turbo-generators. Firstly, the magnetic field in the end region was analyzed by winding MMF superposition principle and air gap magnetic conductivity method, and the electromagnetic force is got with Ampere law. Then, taking QFSN-600-2YHG turbo-generator as study object, the 3 directional electromagnetic forces and the mechanical responses on the end windings were calculate by electromagnetic-structure coupling finite element analysis method. Finally, the experiment vibrations are tested, and the acceleration data was compared with simulated result. It is shown that each directional electromagnetic force contains both the DC component and even harmonics, which will result in the winding vibration mainly at the double fundamental frequency. Meantime, the radial acceleration is the largest and the axial one is the least, so the radial vibration should be paid more attention to in daily monitoring. Moreover, the max deformation mainly occurs on the nose and middle part of the involute, and these locations should be strengthened in design and manufacture.","PeriodicalId":431098,"journal":{"name":"International Journal of Electrical Components and Energy Conversion","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126627271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Myths, Safety and Awareness of Lightning Protection in Bangladesh 孟加拉的神话、安全及防雷意识

International Journal of Electrical Components and Energy Conversion Pub Date : 2020-11-04 DOI: 10.11648/J.IJECEC.20200602.11

Rosaidul Mawla, N. Sultana, M. Shiblee

{"title":"Myths, Safety and Awareness of Lightning Protection in Bangladesh","authors":"Rosaidul Mawla, N. Sultana, M. Shiblee","doi":"10.11648/J.IJECEC.20200602.11","DOIUrl":"https://doi.org/10.11648/J.IJECEC.20200602.11","url":null,"abstract":"Bangladesh, being a tropical country, experiences relatively high density of lightning each year. Lightning has been identified as one the major causes of weather-related deaths and injuries in Bangladesh. The government of Bangladesh has declared lightning as natural disaster when 81 people have lost their lives in just two days due to lightning in 2016. Lightning is a source of fearfulness, inquisitiveness, inspiration and panic. As number of death has increased in Bangladesh in lightning, so the safety rules for the installation of lightning prevention system which is a mandatory provision under Bangladesh National Building Code, to be followed for building construction. People of low literacy rate have the tendency to violate more, the basic lightning safety guidelines. Hence, awareness program has started to educate the people especially the rural one. However, a survey has been conducted to find out the common myths, beliefs, misconceptions in Bangladesh and its impact on lightning safety. It summarizes the prevailing lightning safety awareness and education around the world. Finally, it puts forward some ray of light about the suggestions about lightning protection, safety and awareness for Bangladeshi people to curb the myths and misconceptions.","PeriodicalId":431098,"journal":{"name":"International Journal of Electrical Components and Energy Conversion","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130821924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-voltage Pulse Generation Using Electrostatic Induction in Capacitor 利用电容器静电感应产生高压脉冲

International Journal of Electrical Components and Energy Conversion Pub Date : 2019-11-22 DOI: 10.11648/J.IJECEC.20190502.11

T. Saiki

{"title":"High-voltage Pulse Generation Using Electrostatic Induction in Capacitor","authors":"T. Saiki","doi":"10.11648/J.IJECEC.20190502.11","DOIUrl":"https://doi.org/10.11648/J.IJECEC.20190502.11","url":null,"abstract":"Pulse power sources can produce high temperature or high-density extreme conditions within a short time. They have been introduced to various fields such as those in laser, fusion research, the production of plasma, shockwaves in water, water treatment, and exhaust gas treatments. Various high voltage pulse sources using insulated-gate bipolar transistor (IGBT) semiconductors with high voltage resistivity have been used. Also, Marx bank circuit is well known as an instrument that produces voltage pulses with low repetitive rates. These instruments have several advantages. However, their problems are a complex structure, high cost, and excessive weight. A simple method of producing high voltage pulses with short rising times based on electrostatic induction in external capacitor used for pulse power applications is proposed. The circuit has a simple structure and contains a minimum number of parts, which makes the instrument small and light weight. In fact, the generation of sawtoothed high voltage pulses with short rising times and low repetitive rates of a few 100 Hz was successfully conducted in experiments. Theoretical analysis was simultaneously undertaken. The numerically calculated results for generating high voltage pulses were goodly consistent with the experimental ones. Moreover, it has been confirmed that amplification of the output voltage by electro-hydrodynamics (EHD) electricity generation using a jet flame resulted in higher voltage pulses, lower electricity consumption, and high repetition rates.","PeriodicalId":431098,"journal":{"name":"International Journal of Electrical Components and Energy Conversion","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130578166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4