{"title":"CM noise reduction of isolated converter by balancing technique","authors":"Nasir, Jon Cobb","doi":"10.1109/PECI.2016.7459219","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459219","url":null,"abstract":"Common mode (CM) Electromagnetic interference (EMI) noise in an isolated converter is mainly due to parasitic capacitance occurring within the SMPS (Switch-mode Power Supply). It flows through transformer coupling capacitance and the parasitic capacitance of MOSFETs and diodes. Several techniques have been proposed in the literature to mitigate the common mode noise flowing through transformer windings. Transformer shielding is one of the most effective methods to reduce EMI noise between the primary and secondary windings, however. However, further improvement should be possible by developing more precise models. In this paper, we develop an EMI noise model for an isolated converter that allows detailed performance analysis. It incorporates the parasitic elements of the converter components and also the coupling capacitance of the transformer. Using this model we propose a new balancing technique to mitigate the CM noise of the isolated converter with modified transformer. The proposed method is applied to an isolated converter and experimental results are provided to verify the novel balancing technique.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125201924","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}
K. M. Gegner, A. Birchfield, T. Xu, K. Shetye, T. Overbye
{"title":"A methodology for the creation of geographically realistic synthetic power flow models","authors":"K. M. Gegner, A. Birchfield, T. Xu, K. Shetye, T. Overbye","doi":"10.1109/PECI.2016.7459256","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459256","url":null,"abstract":"To enable greater innovation in power systems, our research seeks to create entirely fictitious synthetic power system networks that capture the functionality, topology, and defining characteristics of the actual U.S. transmission system, and thus provide realistic test cases for research, without revealing any sensitive information. Creation of these models relies only on publicly available data and statistics derived from the actual grid. This paper outlines two fundamental steps for the creation of synthetic power system models: geographic load and generator substation placement and assignment of transmission line electrical parameters.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132722272","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":"High performance model predictive technique for MPPT of gird-tied photovoltaic system using impedance-source inverter","authors":"S. Sajadian, R. Ahmadi","doi":"10.1109/PECI.2016.7459236","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459236","url":null,"abstract":"This paper presents a maximum power point tracking (MPPT) method using model predictive technique for a grid-tied photovoltaic harvesting energy system. A single-stage grid-tied Z-source inverter is used for extracting the maximum available power and feeding the power to the grid. The proposed technique predicts the future behavior of the photovoltaic side voltage and current by using a digital observer which estimates the parameters of the photovoltaic module. The proposed method features simultaneously reduction in oscillation around maximum power point (MPP) and fast convergence by adaptively changing the perturbation size using the predicted model of the system. The experimental results demonstrate fast tracking response under dynamic weather condition, small steady state error, small oscillation around MPP at steady state, and high MPPT efficacy for wide range of solar irradiance levels. Additionally, the grid side current total harmonics distortion (THD) meets the IEEE-519 standards.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122349664","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}
Li Kangping, Wang Fei, Zhen Zhao, Mi Zengqiang, S. Hongbin, Liu Chun, Wang Bo, Lu Jing
{"title":"Analysis on residential electricity consumption behavior using improved k-means based on simulated annealing algorithm","authors":"Li Kangping, Wang Fei, Zhen Zhao, Mi Zengqiang, S. Hongbin, Liu Chun, Wang Bo, Lu Jing","doi":"10.1109/PECI.2016.7459209","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459209","url":null,"abstract":"It is indispensable for electric power companies to classify the electricity consumption behavior of residential customers, in order to understand the user's personalized demands and provide them with targeted services. K-means Clustering algorithm is one of the most popular methods for grouping the consumption patterns in previous studies. However, in traditional K-means algorithm, the initial clustering centroids are selected randomly, which makes it susceptible to local optima and has difficulty in converging to the global minimum. In view of this drawbacks, an improved K-means based on the simulated annealing algorithm is proposed in this paper. By employing the simulated annealing algorithm, the optimal cluster centers can be obtained. By experiments using a large-scale dataset including about 216 houses' consumption records in American, it is shown that the proposed method has a better performance than traditional K-means algorithm and be able to extract typical consumption patterns.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125300158","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}
Jae Won Lee, Seung Wan Kim, Y. Song, Sun-kyo Kim, Y. Yoon
{"title":"Economic benefit of energy storage system for frequency regulation","authors":"Jae Won Lee, Seung Wan Kim, Y. Song, Sun-kyo Kim, Y. Yoon","doi":"10.1109/PECI.2016.7459210","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459210","url":null,"abstract":"To address the environmental concerns throughout the world, many new power sources, such as renewable energy, are being introduced. In order to maintain the reliability and stability of the system while integrating these inputs, many systems have started integrating battery energy storage systems. However, the introduction of such system has been very slow due to its high capital costs. Therefore, the economic benefit of a lithium ion battery energy storage system used for frequency regulation in a utility company is analyzed. The profit of a utility is calculated in terms of reduced amount of power purchase cost, and the results verify that the utility is able to recover their investments within the life cycle of the storage system in all cases.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130533860","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":"Development of model for load frequency control in power system with large-scale integration of renewable energy","authors":"Shinichi Takayama, R. Matsuhashi","doi":"10.1109/PECI.2016.7459244","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459244","url":null,"abstract":"Due to large-scale renewable energy installation, frequency regulation is becoming more important and more difficult in power system. Battery energy storage system (BESS) is the one solution to this problem. It is assumed that effectiveness of installing BESS into power systems depends on its generation mix and control systems of frequency regulation. However, the optimal size of BESS has been discussed without consideration of supply-demand control in the power system, especially under the largescale renewable energy installation. If variable generations, such as photovoltaic power (PV) generation and wind turbine (WT) generation are largely integrated into the grid, load frequency control (LFC) is required to compensate not only short-term fluctuation but long-term fluctuation which is conventionally dealt with by economic dispatching control (EDC) because of the uncertainty of the uncertainty of the PV and WT output. Therefore, the way of LFC and EDC should be revised under such circumstances, and then, the value of BESS should be analyzed in consideration of this change of control system. First of all, the new coordination method of EDC and LFC is proposed to deal with the large-scale installation of PV and WT generation. Next, the effectiveness of the proposed method in terms of frequency regulation is verified by numerical simulation. Moreover, the optimal size of BESS is analyzed based on the proposed EDC and LFC systems. Numerical simulation shows the effectiveness of the proposed EDC and LFC system and the cost benefits of the use of BESS for LFC.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126071637","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}
Lei Zhao, D. Thrimawithana, U. Madawala, S. Ruddell, Patrin Illenberger
{"title":"A push-pull converter based BD-IPT system for wireless grid integration of EVs","authors":"Lei Zhao, D. Thrimawithana, U. Madawala, S. Ruddell, Patrin Illenberger","doi":"10.1109/PECI.2016.7459223","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459223","url":null,"abstract":"A low cost push-pull converter based bi-directional inductive power transfer (BD-IPT) system suitable for wireless integration of electric vehicles (EVs) with the utility grid is presented. The proposed system has a number of advantages over traditional BD-IPT systems, due mainly to its inherent ability to maintain zero voltage switching (ZVS) operation over a wide range of operating conditions. The operating principles of the push-pull converter based BD-IPT system, which uses DD-type magnetic pads, is discussed and the behavior under varying spatial displacements between the pads is investigated. The viability of the proposed BD-IPT system is verified through simulations of a 3.7 kW system and, results are compared with a traditional parallel tuning BD-IPT system, to show that it is efficient and can maintain ZVS under all operating conditions; thus providing a low cost and simple solution for wireless grid integration of single or multiple EVs.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127431632","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}
Abdlmnam Abdlrahem, P. Saraf, R. Hadidi, A. Karimi, H. Sherwali, E. Makram
{"title":"Design of a fixed-order robust controller using loop shaping method for damping inter-area oscillations in power systems","authors":"Abdlmnam Abdlrahem, P. Saraf, R. Hadidi, A. Karimi, H. Sherwali, E. Makram","doi":"10.1109/PECI.2016.7459267","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459267","url":null,"abstract":"The inter-area oscillations are common in power system and can occur due to the changes in the load or generation power especially in long transmission lines. This paper presents the design of a robust fixed-order loop shaping controller to damp out the inter-area oscillations and to enhance the stability of the power system. The proposed loop shaping method is based on the shaping of the open-loop transfer function in the Nyquist diagram through minimizing the quadratic error between the actual and the desired open loop transfer functions in the frequency domain. The proposed method is robust with respect to multi-model uncertainty. Despite other robust controller design methods, the proposed approach deals with the entire system i.e. there is no need to reduce the system and still leads to a lower order controller. The proposed method is applied on the two area four machine system under different load conditions and different wind generations. The effectiveness and robustness of the proposed method in damping inter-area oscillations are validated using case studies.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126361356","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":"Closed loop control of novel transformer-less inverter topology for single phase grid connected photovoltaic system","authors":"M. Rajeev, V. Agarwal","doi":"10.1109/PECI.2016.7459232","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459232","url":null,"abstract":"In grid connected mode of distributed generation applications, the elimination of line frequency transformer is possible without impacting system characteristics related to grid integration, ground leakage current, dc injection, safety issues etc. This paper presents the design, modeling, simulation and implementation of closed loop operation of a novel inverter topology suitable for transformer-less single phase grid connected photovoltaic systems. The control scheme ensures extraction of maximum power from the solar Photovoltaic (PV) source, synchronization with the grid and controlled active and reactive power transfer to the grid. Simulation results with both dc source and solar PV as input, incorporating MPPT, are discussed in the paper. Implementation of a 250W laboratory prototype has been carried out using dSPACE DS1103 PPC controller board and the results of the grid connected mode of operation are presented in the paper.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127284267","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}
S. Ruddell, D. Thrimawithana, U. Madawala, D. S. B. Weerasinghe, M. Neuburger
{"title":"A novel single-phase AC-AC BD-IPT system with zero power ripple","authors":"S. Ruddell, D. Thrimawithana, U. Madawala, D. S. B. Weerasinghe, M. Neuburger","doi":"10.1109/PECI.2016.7459216","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459216","url":null,"abstract":"Bidirectional and wireless power delivery to electric vehicles (EVs) or vehicle-to-grid (V2G) applications can be realized through bidirectional inductive power transfer (BD-IPT) technology but typically requires a three-stage power conversion process. This paper proposes a novel single-phase AC-AC BD-IPT system that requires only a two-stage power conversion process to facilitate wireless power transfer between EVs and the grid, while eliminating the power ripple found in traditional AC-AC BD-IPT converters. The operating principles of the the proposed system are presented to show that both magnitude and direction of power flow can be controlled through the relative phase angle and the pulse width modulation of voltages produced by primary and pick-up converters. Viability of the proposed concept is verified through simulations of a 3.7 kW system; and without an additional power conversion stage, the proposed BD-IPT system is low in cost, and ideal for wireless charging of EVs or V2G applications.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127424272","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}