{"title":"A Lumped Electromechanical Model for Output Power from Partially Covered Piezoelectric Energy Harvester","authors":"S. K, K. Shankar, C. Sujatha","doi":"10.1109/ICPEA.2019.8818525","DOIUrl":"https://doi.org/10.1109/ICPEA.2019.8818525","url":null,"abstract":"The cantilevered piezoelectric vibration energy harvesters are operated in their first mode and analysed as Single Degree of Freedom (SDOF) systems. In literature, models were developed with piezoelectric material spread over the entire length of the substrucutre beam. In cantilevered arrangement, strain in the harvester beam is maximum at fixed end and minimum at the free end. So it is not cost effective to use piezoelectric materials for full length of the substructure beam. A lumped electromechanical model for output power from piezoelectric vibration energy harvester beam with partially covered piezoelectric material is proposed. The governing equations of motion for the coupled electromechanical model are deduced using Newton's laws of motion and Kirchoff's current law. A novel method using a correction factor to find equivalent stiffness properties of proposed harvester beam is studied, thereby equations for output power from the harvester are deduced. The model is developed considering transverse harmonic base excitation and linear system parameters. Experiments are performed to validate the results from electromechanical model. The performance of harvester is investigated for different tip masses. The analytical model results and experimental measurements have shown good agreement in resonance frequency, relative displacement and output power.","PeriodicalId":427328,"journal":{"name":"2019 IEEE 2nd International Conference on Power and Energy Applications (ICPEA)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132183294","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}
{"title":"Study on Splash of Oil Droplets Colliding with Wall in Engine Crankcase","authors":"Lin Chen, R. Huang, Pei Zhou, Jin Li","doi":"10.1109/ICPEA.2019.8818526","DOIUrl":"https://doi.org/10.1109/ICPEA.2019.8818526","url":null,"abstract":"In the engine crankcase, the splash of oil droplets colliding with the wall has a significant impact on the formation of oil mist. In order to clarify the influencing factors of droplet impact splash, this paper establishes a calculation model of droplet impact wetting wall surface by using local mesh instantaneous refinement technology combined with volume of fluid (VOF) and wall wetting model, and verifies the reliability of the model through experiments. The results show that the thickness of oil film on the wall, the viscosity and surface tension of the oil all affect the splash behavior of oil colliding with wall. The larger the oil viscosity, the less secondary droplets produced by splashing, but the viscosity has no significant effect on the Sauter mean diameter (SMD) of secondary droplets. The bigger the surface tension of the oil, the less secondary droplets are produced, and the SMD of the secondary droplets will obviously increase. The thicker the oil film on the wall, the more secondary droplets with the larger average size produced by the splash.","PeriodicalId":427328,"journal":{"name":"2019 IEEE 2nd International Conference on Power and Energy Applications (ICPEA)","volume":"48 s17","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113957053","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}
{"title":"Enhancing Passive Cooling and Natural Ventilation for Houses of Various Climatic Zones of India","authors":"Shubham Kashyap, Vivek Kumar Gaba, Anil Kumar Tiwari","doi":"10.1109/ICPEA.2019.8818531","DOIUrl":"https://doi.org/10.1109/ICPEA.2019.8818531","url":null,"abstract":"In this work an arrangement based on solar energy has been proposed. The functions of the proposed system are to create natural ventilation in a room and to cool the entering outdoor fresh air. The purpose of this study is to reduce household electricity consumption by replacing the electrical ventilation and cooling system with the natural ventilation and cooling system. The proposed system comprises two subsystems, namely (i) Solar Chimney (SC) for creating ventilation, and (ii) Evaporative Cooling Cavity (ECC) for cooling the entering fresh air. The mathematical models for both the solar chimney and evaporative cooling cavity have been developed. For achieving the solution of these models a MATLAB code has been prepared. ISHRAE climate data have been used for the performance evaluation of the proposed system under different climatic zones of India. Indian has 6 climate zones; solar chimney has been found to use in all 6 climate zones for a period of the whole year. The coupled arrangement has been found suitable for (i) Hot subtropical, (ii) Tropical wet and dry, (iii) Tropical semi-arid, and (iv) Desert climate zone. The finding shows that the proposed system can save up to 1308 kWh of electricity in one year period in the Desert climate zone.","PeriodicalId":427328,"journal":{"name":"2019 IEEE 2nd International Conference on Power and Energy Applications (ICPEA)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114399892","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}
B. Sudiarto, A. Zahra, F. H. Jufri, I. Made Ardita, C. Hudaya
{"title":"Characteristics of Disturbance in Frequency 9 -150 kHz of Photovoltaic System under Fluctuated Solar Irradiance","authors":"B. Sudiarto, A. Zahra, F. H. Jufri, I. Made Ardita, C. Hudaya","doi":"10.1109/ICPEA.2019.8818539","DOIUrl":"https://doi.org/10.1109/ICPEA.2019.8818539","url":null,"abstract":"Photovoltaic (PV) systems generally use the inverter to convert Direct Current (DC) power into Alternating Current (AC) power so that it can be combined with the utility grid system. The inverter may generate a disturbance in the frequency range between 9 – 150 kHz due to its frequency switching, which may degrade the power quality and affect the performance of other equipment connected to the system. In this manner, this paper presents an investigation of disturbance characteristics in the frequency between 9-150 kHz generated by an inverter of the PV system under fluctuated solar irradiance. This study explores the correlation between different solar irradiance with the disturbance generated by the inverter. Two types of the PV system are investigated, such as off-grid and on-grid system. The results show that a higher solar irradiance generates a higher disturbance. Furthermore, it is also shown that the off-grid system generates higher disturbance (7.6%-30.8% per 100W/m2) than the on-grid system (2.6%-14.12% per 100W/m2).","PeriodicalId":427328,"journal":{"name":"2019 IEEE 2nd International Conference on Power and Energy Applications (ICPEA)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132590403","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}
{"title":"Speed Sensorless Vector Control of Parallel Connected Induction Motor with Anti-windup Integral-Proportional Speed Controller","authors":"Fanniesha Hamada, F. Husnayain, F. Yusivar","doi":"10.1109/ICPEA.2019.8818527","DOIUrl":"https://doi.org/10.1109/ICPEA.2019.8818527","url":null,"abstract":"This paper presents speed sensorless vector control with anti-windup integral-proportional (AWIP) speed controller of parallel connected induction motor fed by single inverter. Luenberger observer is adopted to estimate rotor flux, stator current, and motor speed. Vector control with average and difference mechanism works to overcome unbalanced load torque. An AWIP speed controller is employed to improve the degradation of system performance due to windup effect such as large overshoot, slow settling time, delayed response and could even destabilized system. It will be compared to anti-windup proportional-integral (AWPI) speed controller to verify the reliability. Simulation results show that speed sensorless vector control with AWIP performs better to eliminate overshoot in transient response.","PeriodicalId":427328,"journal":{"name":"2019 IEEE 2nd International Conference on Power and Energy Applications (ICPEA)","volume":"10 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126123378","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}
Xin Nie, Kefeng Zhou, Honggang Liu, Guangcai Zhang, Huanhuan Luo, Nan Wu
{"title":"Hydrodynamic Analysis and Metal Temperature Calculation for the Water Wall of a 660MW Supercritical Boiler at Severe Peak Load Regulation","authors":"Xin Nie, Kefeng Zhou, Honggang Liu, Guangcai Zhang, Huanhuan Luo, Nan Wu","doi":"10.1109/ICPEA.2019.8818502","DOIUrl":"https://doi.org/10.1109/ICPEA.2019.8818502","url":null,"abstract":"As variable renewable energy establishes an ever-greater role in electricity systems, so demands placed on conventional generation structure are changing in China. However, how to absorb the new energy and solve the peak shaving problem has become a key factor restricting the development of new energy in China. Chinese coal-based energy resources structure determines coal-fired power plants to take more severe peak load regulation. Peak shaving task is a new requirement for coal-fired power units for a long period of time in China, and the boiler of coal-fired power units hydrodynamic safety evaluation of peak load regulation is an important part of it. The hydrodynamic calculation and experimental study of a 660 MW supercritical boiler at deep peak load regulation were carried out in this paper. On the basic of the boiler structure and combustion mode, a network system mathematical model of a 660MW boiler was established. The results of the calculation indicate that when the boiler load reach 26% BMCR, the hydrodynamic characteristics and water wall temperature of the boiler are all within the safe range. According to the calculation results, the actual low-load experiment on site was carried out. The experiment results show that there are no safety problems in the boiler under 26%BMCR too, and the measured data of water wall temperature agree with the calculation well.","PeriodicalId":427328,"journal":{"name":"2019 IEEE 2nd International Conference on Power and Energy Applications (ICPEA)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117196599","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}
{"title":"Comprehensive Evaluation of Reliability and Economic on Distribution Network","authors":"Feng Yuyao, Zhang Kaiyu, Yuan Quanning","doi":"10.1109/ICPEA.2019.8818510","DOIUrl":"https://doi.org/10.1109/ICPEA.2019.8818510","url":null,"abstract":"This paper introduces the basic idea of cost-benefit analysis approach. On the basis of analyzing reliability index, the paper establishes the customer interruption cost models for load point reliability assessment, quantifies the reliability economically, and combines the reliability cost and reliability benefit as the comprehensive objective function of the optimal investment scheme of distribution network. Finally, combine with an example, the reliability and economy of a distribution line are evaluated by using the algorithm proposed in this paper, the reliability indices of each load point and system of the feeder and the cost of power outage are calculated, and then the results of the corresponding objective function are obtained, and the investment strategy of the distribution system network is carried.","PeriodicalId":427328,"journal":{"name":"2019 IEEE 2nd International Conference on Power and Energy Applications (ICPEA)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127485752","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}
{"title":"Dynamic Model System of a Smart Distribution Network Based on Fault Location Test","authors":"Fengge Zhang, Dexian Yang, Tong Wu","doi":"10.1109/ICPEA.2019.8818529","DOIUrl":"https://doi.org/10.1109/ICPEA.2019.8818529","url":null,"abstract":"This paper designs dynamic model system of a smart distribution network which can be used to analysis on ground fault and experimental study of self-healing control technology of the distribution network, as well as the system test of automation equipment, develops special equipment for carrying out fault location tests and faulty fault line selection test in ungrounded systems, and built the flexible power distribution system dynamic model system. The research achievements have been applied in many universities, power research institutes, ship propulsion system research centers in China.","PeriodicalId":427328,"journal":{"name":"2019 IEEE 2nd International Conference on Power and Energy Applications (ICPEA)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124279126","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}
{"title":"Impact of Voltage Variation on Hydroelectric Doubly Fed Machines – An Electro-thermomechnaical Investigation","authors":"R. R. Singh, V. Indragandhi, S. Umashankar","doi":"10.1109/ICPEA.2019.8818535","DOIUrl":"https://doi.org/10.1109/ICPEA.2019.8818535","url":null,"abstract":"Renewable energy systems in power grid creates irregular voltage profile. These electrical perturbations affects the machine linked to the power network, particularly high rating machines are more affected. To have a stable network, predicting the operation of pumped storage power plant enabling doubly fed hydroelectric machine is mandatary. Therefore, this paper analyses the electro-thermomechanical stresses under voltage variation on doubly fed synchronous machine (DFSM) and doubly fed asynchronous machine (DFAM). Hardware experimentation with 3 HP doubly fed machines has been carried out to identify the real time impact. The outcome of the analysed results helps to prevent the power network system from voltage variation issue and provides the countermeasure ideas to develop a robust system.","PeriodicalId":427328,"journal":{"name":"2019 IEEE 2nd International Conference on Power and Energy Applications (ICPEA)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125065200","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}
{"title":"Harmonics Measurements and Analysis of Battery Energy Storage Systems in Microgrids","authors":"C. Su, Liang-Yu Chen, Jing-Ting Yu","doi":"10.1109/ICPEA.2019.8818545","DOIUrl":"https://doi.org/10.1109/ICPEA.2019.8818545","url":null,"abstract":"Battery energy storage systems (BESSs) have become an important measure for increasing renewable energy penetration and maintaining system supply reliability in many countries worldwide. Regardless of what type of BESSs, the battery should be charged or discharged through power converters. When a large number of BESSs is connected to distribution systems, there will be a degree of influence on the power quality. This paper presents harmonics measurement and analysis for smart energy storage systems for a practical microgrid in rural areas in Taiwan. Study results can provide utilities useful information for grid planning and operation against significant renewable energy penetration with BESSs.","PeriodicalId":427328,"journal":{"name":"2019 IEEE 2nd International Conference on Power and Energy Applications (ICPEA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129838011","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}