2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)最新文献_第8页

A Review on the High-Altitude Wind Power Kites with the Proposed Control Methods 高空风力风筝及其控制方法综述

2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982324

Sarah N. Buhlmann, M. F. Abdel-Fattah

引用次数: 0

Number of Poles Pairs Effects on Electromagnetic Torque Permanent Magnet Synchronous Motor 磁极对数对永磁同步电动机电磁转矩的影响

2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982266

A. Usoltsev, G. Demidova, D. Lukichev, S. Bratchikov

引用次数: 0

Actual impact of heat pumps to energy performance of apartment buildings in Estonia 热泵对爱沙尼亚公寓楼能源性能的实际影响

2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982370

Arbo Reino, A. Hamburg

{"title":"Actual impact of heat pumps to energy performance of apartment buildings in Estonia","authors":"Arbo Reino, A. Hamburg","doi":"10.1109/RTUCON48111.2019.8982370","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982370","url":null,"abstract":"As buildings consume about 40% of final energy in Europe it is seen as a most promising field for savings. EU has come up with Clean Energy Package in 2017, part of which is energy in buildings. Thus, member states are tightening their building energy consumption regulations. Under Estonian regulation of energy performance in buildings, heat pumps have been preferred over district heating for heat supply. According to a building model, the regulation is based on, those would reduce overall energy consumption and deliver significantly lower energy performance values. This study main aim is to check those assumptions used based on actual metered energy consumption data of apartment buildings recently renovated with on-site heat pumps. During the analysis it has been found out that insulation of buildings reduces heat consumption in average by 22% compared to the situation before renovation. However, heat purchase from DH network drops in average by 69% as on-site heat pump produces 61% of reduced heat demand from purchased power. Even considering additional power used in heat pump with its weight factor, energy performance of buildings is improved significantly. However, carbon footprint of buildings rises as power generation in Estonia is dominated by fossil fuels while district heating has over 50% share of renewables. Risk of increased carbon emissions is clearly not the intention of the regulation. To correct that misbehaviour, the regulation was updated in 2019. Analysis of the update shows that it does not fully rectify the situation as there are still 25% of cases when heat pumps still post better energy performance than renewable DH.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130240973","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

Real-time hybrid model of a wind turbine with doubly fed induction generator 双馈感应发电机风力发电机组的实时混合模型

2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982306

R. Rink, R. Małkowski

{"title":"Real-time hybrid model of a wind turbine with doubly fed induction generator","authors":"R. Rink, R. Małkowski","doi":"10.1109/RTUCON48111.2019.8982306","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982306","url":null,"abstract":"In recent years renewable sources have been dominating power system. The share of wind power in energy production increases year by year, which meets the need to protect the environment. Possibility of conducting, not only computer simulation, but also laboratory studies of wind turbine operation and impact on the power system and other power devices in laboratory conditions would be very useful. This article presents a method of performing real-time hybrid model of a wind turbine. The advantage of a hybrid model is the combination of the possibilities and flexibility of simulation of aerodynamic and mechanical phenomena with the electric machine, which is seen from the point of view of the grid as a real wind turbine. The originality of the presented approach is using a real-time digital model to control a power device connected to the grid. Real-time simulation is performed of aerodynamic phenomena and conversion of wind energy for a mechanical moment on the shaft, which controls via a converter of asynchronous motor driving a doubly-fed induction generator. The hybrid model allows testing wind turbines in transient conditions after disturbances not feasible with physical wind. The paper describes the concept and the structure of a wind turbine hybrid model. Components of a wind turbine hybrid model are described. The results of laboratory studies of the real-time hybrid model of a wind turbine are presented.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"152 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122162629","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

Single-ended Resonant Inverter for Active Balancing System 主动平衡系统的单端谐振逆变器

2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982356

Dimitar D. Arnaudov, Krasimir Kishkin, K. Kroičs

引用次数: 0

The FEM Based Modeling and Corresponding Test Rig Preparation for Broken Rotor Bars Analysis 转子断条分析的有限元建模及相应试验台的准备

2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982350

B. Asad, Lauri Eensalu, T. Vaimann, A. Kallaste, A. Rassõlkin, A. Belahcen

引用次数: 1

Multivariable optimal control of wireless power transfer systems with series-parallel compensation 带串并联补偿的无线电力传输系统多变量最优控制

2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982314

B. Pakhaliuk, O. Husev, V. Shevchenko, J. Zakis, D. Stepins

引用次数: 3

Advancements and Restrictions of E-Assessment in View of Remote Learning in Engineering 基于工程远程学习的电子评估的进步与限制

2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982349

Z. Raud, V. Vodovozov

引用次数: 6

Shapley-Value-Based Charging and Discharging Scheduling for Electric Vehicles in a Parking Station 基于shapley值的电动汽车充放电调度

2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982376

M. Zima-Bočkarjova, A. Sauhats, L. Petrichenko, Roman Pertichenko

{"title":"Shapley-Value-Based Charging and Discharging Scheduling for Electric Vehicles in a Parking Station","authors":"M. Zima-Bočkarjova, A. Sauhats, L. Petrichenko, Roman Pertichenko","doi":"10.1109/RTUCON48111.2019.8982376","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982376","url":null,"abstract":"The number of electric vehicles (EV) in the world is growing rapidly. The large-scale use of EVs in public life activates the need for EV battery charging services to be carried out within the power system. This publication examines the possibility of choosing a battery recharging point that can be made by the owner of an electric vehicle, as well as the presence of several decision-makers in selecting a charging schedule. This problem is important because we can assume that a significant part of the EVs mainly use two parking spaces located: close to the place of residence and close to the workplace. We accept and prove that the car charger station can be created by the employer and can be carried out in the best interests of the employer and the employee. Cooperative game theory (Shapley value) is used to support rational decisions. The results of this analysis could be adopted or recommended by both decision-makers at the legislative level and by potential investors in the development of transport electrification and smart energy.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130518531","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: 2

Energy saving measures for a district heating company. Case study of Latvia 某区域供热公司的节能措施。拉脱维亚个案研究

2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982310

V. Kirsanovs, Dace Lauka, I. Veidenbergs, D. Blumberga

引用次数: 0