Pub Date : 2017-10-01DOI: 10.1109/IECON.2017.8216072
F. Xu, Yi Lu, Xiaohua Xuan, P. Qiu, Kai Tong, J. Xuan, Qian Chen, Daozhuo Jiang
The development of shore-to-ship power supply technology can effectively reduce port pollution and promote the construction of green port. This paper briefly introduces the technical scheme of the common used inverter for shore power, and then puts forward the technical scheme of multi-terminal medium-voltage DC (MVDC), according to the transmission characteristics of the shore-to-ship power supply. Considering the different demand of converters connected to the distribution network and the ship grid, the paper discusses the suitable converter schemes. Based on the current operation demand of the distribution network and the new energy development trend of ports and ships in future, advantages and disadvantages of the inverter technology and the multi-terminal MVDC technology are compared, which demonstrates the feasibility and superiority of the multi-terminal MVDC technology in shore-to-ship power supply applications.
{"title":"Research on flexible medium-voltage DC distribution technology based shore-to-ship power supply system","authors":"F. Xu, Yi Lu, Xiaohua Xuan, P. Qiu, Kai Tong, J. Xuan, Qian Chen, Daozhuo Jiang","doi":"10.1109/IECON.2017.8216072","DOIUrl":"https://doi.org/10.1109/IECON.2017.8216072","url":null,"abstract":"The development of shore-to-ship power supply technology can effectively reduce port pollution and promote the construction of green port. This paper briefly introduces the technical scheme of the common used inverter for shore power, and then puts forward the technical scheme of multi-terminal medium-voltage DC (MVDC), according to the transmission characteristics of the shore-to-ship power supply. Considering the different demand of converters connected to the distribution network and the ship grid, the paper discusses the suitable converter schemes. Based on the current operation demand of the distribution network and the new energy development trend of ports and ships in future, advantages and disadvantages of the inverter technology and the multi-terminal MVDC technology are compared, which demonstrates the feasibility and superiority of the multi-terminal MVDC technology in shore-to-ship power supply applications.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"30 1","pages":"405-409"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75061384","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}
Pub Date : 2017-10-01DOI: 10.1109/IECON.2017.8216510
K. Hwu, Wen-Zhuang Jiang, Y. Yau
In power electronics, the compensators are required to shape the loop gain of the transfer function. The purpose of shaping the loop gain transfer function is to obtain a desired crossover frequency, phase margin and gain margin. The compensators can be constructed by the operational amplifier (op amp). There are a few commonly used compensators built up by the op amp, to be discussed herein. By using different connections of the resistors and capacitors, different transfer functions can be obtained. For derivation of the transfer functions of the compensators, the traditional method is to use algebra calculation. Thus, the calculation process will become more complicated if the compensator consists of many resistors and capacitors. In this letter, a physical insight method is proposed to derive the transfer functions of the compensators. With the proposed method, the derivation of the transfer functions of the compensators is faster.
{"title":"Derivations of transfer functions from physical insight","authors":"K. Hwu, Wen-Zhuang Jiang, Y. Yau","doi":"10.1109/IECON.2017.8216510","DOIUrl":"https://doi.org/10.1109/IECON.2017.8216510","url":null,"abstract":"In power electronics, the compensators are required to shape the loop gain of the transfer function. The purpose of shaping the loop gain transfer function is to obtain a desired crossover frequency, phase margin and gain margin. The compensators can be constructed by the operational amplifier (op amp). There are a few commonly used compensators built up by the op amp, to be discussed herein. By using different connections of the resistors and capacitors, different transfer functions can be obtained. For derivation of the transfer functions of the compensators, the traditional method is to use algebra calculation. Thus, the calculation process will become more complicated if the compensator consists of many resistors and capacitors. In this letter, a physical insight method is proposed to derive the transfer functions of the compensators. With the proposed method, the derivation of the transfer functions of the compensators is faster.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"23 1","pages":"3021-3024"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75075679","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}
Pub Date : 2017-10-01DOI: 10.1109/IECON.2017.8216700
Baoping Shi, Bo Zhou, D. Hu
In order to achieve the integration of ac/dc output in the aircraft power system, a novel single-input/dual-output indirect matrix converter (IMC) is proposed in this paper. Based on the fact that a real dc-link is formed in IMC, the proposed topology realizes dc output by inserting a simple two transistor forward converter (TTFC) into the dc-link. Its modulation strategy is composed of two parts, including conventional space vector modulation (SVM) for IMC and coordinate modulation between TTFC and rectifier stage. The proposed circuit based on IMC has advantages such as compact structure, independent ac/dc output each other and stable dc output voltage. Besides, sinusoidal input/output for IMC and zero current switching (ZCS) in rectifier stage are still retained. Simulation results are given to verify the feasibility of proposed topology and its modulation strategy.
{"title":"A novel dual-output indirect matrix converter for more electric aircraft","authors":"Baoping Shi, Bo Zhou, D. Hu","doi":"10.1109/IECON.2017.8216700","DOIUrl":"https://doi.org/10.1109/IECON.2017.8216700","url":null,"abstract":"In order to achieve the integration of ac/dc output in the aircraft power system, a novel single-input/dual-output indirect matrix converter (IMC) is proposed in this paper. Based on the fact that a real dc-link is formed in IMC, the proposed topology realizes dc output by inserting a simple two transistor forward converter (TTFC) into the dc-link. Its modulation strategy is composed of two parts, including conventional space vector modulation (SVM) for IMC and coordinate modulation between TTFC and rectifier stage. The proposed circuit based on IMC has advantages such as compact structure, independent ac/dc output each other and stable dc output voltage. Besides, sinusoidal input/output for IMC and zero current switching (ZCS) in rectifier stage are still retained. Simulation results are given to verify the feasibility of proposed topology and its modulation strategy.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"167 1","pages":"4083-4087"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75077917","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}
Pub Date : 2017-10-01DOI: 10.1109/IECON.2017.8217029
W. Tian, Yi Tan, Yong Li, Yijia Cao, Xuebo Qiao, Qiang Li, Shangmin Chen, Bo Hu
This paper proposes a multiperiod optimal dispatch model for hybrid voltage source converter based multi-terminal DC (VSC-MTDC) system and AC grids with consideration of optimal coordination of offshore wind farm (OWF) and battery energy storage (BES). The OWF is connected to onshore AC grid by VSC-MTDC. The VSC capacity limits and Grid Code for OWF connection to AC grid are taken into consideration. Scenario method is employed to model the wind energy output uncertainty. Simulation on the modified IEEE 118-bus system with three OWFs integration via seven terminal VSC-MTDC network is used to validate the availability and effectiveness of the proposed method.
{"title":"Optimal multiperiod dispatch for hybrid VSC-MTDC and AC grids by coordination of offshore wind farm and battery energy storage","authors":"W. Tian, Yi Tan, Yong Li, Yijia Cao, Xuebo Qiao, Qiang Li, Shangmin Chen, Bo Hu","doi":"10.1109/IECON.2017.8217029","DOIUrl":"https://doi.org/10.1109/IECON.2017.8217029","url":null,"abstract":"This paper proposes a multiperiod optimal dispatch model for hybrid voltage source converter based multi-terminal DC (VSC-MTDC) system and AC grids with consideration of optimal coordination of offshore wind farm (OWF) and battery energy storage (BES). The OWF is connected to onshore AC grid by VSC-MTDC. The VSC capacity limits and Grid Code for OWF connection to AC grid are taken into consideration. Scenario method is employed to model the wind energy output uncertainty. Simulation on the modified IEEE 118-bus system with three OWFs integration via seven terminal VSC-MTDC network is used to validate the availability and effectiveness of the proposed method.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"72 1","pages":"5935-5939"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72637067","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}
Pub Date : 2017-10-01DOI: 10.1109/IECON.2017.8216641
Jing Zhao, Yun Zheng, Congcong Zhu, Hao Chen, Liu Yang
In order to reduce the permanent magnet (PM) volume and combine the advantages of in-wheel motor, a novel modular-stator outer-rotor flux-switching permanent-magnet motor (MSOR-FSPM) whose PM volume is half of that in conventional outer-rotor flux-switching permanent-magnet (COR-FSPM) motor is proposed. However, cogging torque and torque ripple of MSOR-FSPM motor are especially worse due to the inherent double salient effect and the back-EMF harmonics caused by module stator structure. In this paper, structure and operation principle of MSOR-FSPM motor are described simply. Secondly, cogging torque and torque ripple are reduced by using traditional rotor two-step skewing method, but the result is unsatisfactory. Thirdly, a new rotor two-step skewing method is adopted since the ratio of back-EMF period to cogging torque period is the odd. Compared with traditional rotor step skewing method, the new method eliminates the even harmonics of back-EMF and remains the amplitude of fundamental waveform; the odd harmonics of cogging torque and electromagnetic torque are eliminated. Finally, the results of the new rotor step skewing method is verified by 3D finite element method (FEM) and further improved by embedding non-magnetic blocks in the middle of the stator and rotor.
{"title":"Torque ripple reduction of a modular-stator outer-rotor flux-switching permanent-magnet motor","authors":"Jing Zhao, Yun Zheng, Congcong Zhu, Hao Chen, Liu Yang","doi":"10.1109/IECON.2017.8216641","DOIUrl":"https://doi.org/10.1109/IECON.2017.8216641","url":null,"abstract":"In order to reduce the permanent magnet (PM) volume and combine the advantages of in-wheel motor, a novel modular-stator outer-rotor flux-switching permanent-magnet motor (MSOR-FSPM) whose PM volume is half of that in conventional outer-rotor flux-switching permanent-magnet (COR-FSPM) motor is proposed. However, cogging torque and torque ripple of MSOR-FSPM motor are especially worse due to the inherent double salient effect and the back-EMF harmonics caused by module stator structure. In this paper, structure and operation principle of MSOR-FSPM motor are described simply. Secondly, cogging torque and torque ripple are reduced by using traditional rotor two-step skewing method, but the result is unsatisfactory. Thirdly, a new rotor two-step skewing method is adopted since the ratio of back-EMF period to cogging torque period is the odd. Compared with traditional rotor step skewing method, the new method eliminates the even harmonics of back-EMF and remains the amplitude of fundamental waveform; the odd harmonics of cogging torque and electromagnetic torque are eliminated. Finally, the results of the new rotor step skewing method is verified by 3D finite element method (FEM) and further improved by embedding non-magnetic blocks in the middle of the stator and rotor.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"38 1","pages":"3765-3770"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74937023","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}
Pub Date : 2017-10-01DOI: 10.1109/IECON.2017.8216501
P. Evald, J. L. Mor, Romulo Thiago Silva da Rosa, R. Z. Azzolin, V. Oliveira, S. Botelho
The robotic welding processes have been highly widespread in manufacturing industries due to large-scale production. An area where these processes are widely applied are shipyards, where there are necessary hundreds to thousands of kilograms of weld by hour. However, systems that operate in open-air environments are vulnerable to sundry disturbances, noises in measures, as well as possible unavailability of measurement of some system states, required for the controller. Taking it into account, in this work, a Robust Model Reference Adaptive Control is proposed to regulate the velocity of a nonlinear motor of a linear welding robot. Furthermore, an Extended Kalman Filter is implemented to estimate the system states and attenuate measurement noises. The proposed control system demonstrated a very good performance with fast convergence and small error.
{"title":"An extended Kalman filter state estimation-based robust MRAC for welding robot motor control","authors":"P. Evald, J. L. Mor, Romulo Thiago Silva da Rosa, R. Z. Azzolin, V. Oliveira, S. Botelho","doi":"10.1109/IECON.2017.8216501","DOIUrl":"https://doi.org/10.1109/IECON.2017.8216501","url":null,"abstract":"The robotic welding processes have been highly widespread in manufacturing industries due to large-scale production. An area where these processes are widely applied are shipyards, where there are necessary hundreds to thousands of kilograms of weld by hour. However, systems that operate in open-air environments are vulnerable to sundry disturbances, noises in measures, as well as possible unavailability of measurement of some system states, required for the controller. Taking it into account, in this work, a Robust Model Reference Adaptive Control is proposed to regulate the velocity of a nonlinear motor of a linear welding robot. Furthermore, an Extended Kalman Filter is implemented to estimate the system states and attenuate measurement noises. The proposed control system demonstrated a very good performance with fast convergence and small error.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"125 1","pages":"2967-2972"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74983806","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}
Pub Date : 2017-10-01DOI: 10.1109/IECON.2017.8217165
Wanqi Huang, W. Dai
Industrial cyber-physical systems (iCPS) provide horizontal and vertical integration between various devices and systems. With the amount of information in iCPS increasing rapidly, data storage and processing mechanism must be scalable and flexible enough to suit requirements of controllers, sensors, and actuators. In addition, collected data should be further organized as local knowledge fragments to support device-level intelligence. Distributed knowledge fragments can be linked together to provide support for decision making by adopting semantic web technologies. This paper presents a data management approach for devices that utilize the non-relational database to store and query ontological knowledge bases. The goal of this work is to provide efficient processing for enabling intelligence on machines during real-time operations.
{"title":"Knowledge storage and acquisition for industrial cyber-physical systems based on non-relational database","authors":"Wanqi Huang, W. Dai","doi":"10.1109/IECON.2017.8217165","DOIUrl":"https://doi.org/10.1109/IECON.2017.8217165","url":null,"abstract":"Industrial cyber-physical systems (iCPS) provide horizontal and vertical integration between various devices and systems. With the amount of information in iCPS increasing rapidly, data storage and processing mechanism must be scalable and flexible enough to suit requirements of controllers, sensors, and actuators. In addition, collected data should be further organized as local knowledge fragments to support device-level intelligence. Distributed knowledge fragments can be linked together to provide support for decision making by adopting semantic web technologies. This paper presents a data management approach for devices that utilize the non-relational database to store and query ontological knowledge bases. The goal of this work is to provide efficient processing for enabling intelligence on machines during real-time operations.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"172 1","pages":"6671-6676"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77486893","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}
Pub Date : 2017-10-01DOI: 10.1109/IECON.2017.8216172
M. Lopez, L. G. D. Vicuña, J. Miret, P. Martí, M. Velasco
In industrial microgrids with medium power rating photovoltaic systems, the low-voltage ride-through capability should be incorporated to help keep power system stability. The goal of this paper is to present a control strategy that allows taking advantage of the maximum capability of the inverters to support the most dropped phase in a photovoltaic-based industrial microgrid during voltage sags. Depending on the grid code requirements, the rated current value could be injected by the local inverters during these disturbances. The currents can be injected through the positive and negative sequences depending on the sag characteristics and the power rating of the local inverters. Also, to prevent overcurrent, the controller can apply active power curtailment. Lastly, selected simulation results are presented to validate the performance of the control scheme.
{"title":"Control strategy to maximize the power capability of PV-based industrial microgrids during voltage sags","authors":"M. Lopez, L. G. D. Vicuña, J. Miret, P. Martí, M. Velasco","doi":"10.1109/IECON.2017.8216172","DOIUrl":"https://doi.org/10.1109/IECON.2017.8216172","url":null,"abstract":"In industrial microgrids with medium power rating photovoltaic systems, the low-voltage ride-through capability should be incorporated to help keep power system stability. The goal of this paper is to present a control strategy that allows taking advantage of the maximum capability of the inverters to support the most dropped phase in a photovoltaic-based industrial microgrid during voltage sags. Depending on the grid code requirements, the rated current value could be injected by the local inverters during these disturbances. The currents can be injected through the positive and negative sequences depending on the sag characteristics and the power rating of the local inverters. Also, to prevent overcurrent, the controller can apply active power curtailment. Lastly, selected simulation results are presented to validate the performance of the control scheme.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"22 1","pages":"1001-1006"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77819917","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}
Pub Date : 2017-10-01DOI: 10.1109/IECON.2017.8216734
Rongwu Zhu, Holger Jedtberg, Marco Liserre
Distribution grids unbalance challenges the DC-link of the Smart Transformer leading to higher ripples and then the lifetime of the DC aluminium electrolytic capacitors (AEC) is reduced. Additionally, dead time and nonlinearity characteristic of IGBT also may introduce ripple current in DC link, potentially decreasing the lifetime of AEC. Based on physical characteristic of AEC, the lifetime estimation of AEC is investigated considering aforementioned impacts. To suppress these impacts, an improved voltage control strategy that can reduce AEC current ripple and then preserve AEC lifetime is proposed. The theoretical analysis has been demonstrated by the simulation results.
{"title":"Voltage control strategies of smart transformer considering DC capacitor lifetime","authors":"Rongwu Zhu, Holger Jedtberg, Marco Liserre","doi":"10.1109/IECON.2017.8216734","DOIUrl":"https://doi.org/10.1109/IECON.2017.8216734","url":null,"abstract":"Distribution grids unbalance challenges the DC-link of the Smart Transformer leading to higher ripples and then the lifetime of the DC aluminium electrolytic capacitors (AEC) is reduced. Additionally, dead time and nonlinearity characteristic of IGBT also may introduce ripple current in DC link, potentially decreasing the lifetime of AEC. Based on physical characteristic of AEC, the lifetime estimation of AEC is investigated considering aforementioned impacts. To suppress these impacts, an improved voltage control strategy that can reduce AEC current ripple and then preserve AEC lifetime is proposed. The theoretical analysis has been demonstrated by the simulation results.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"48 1","pages":"4278-4283"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79764343","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}
Pub Date : 2017-10-01DOI: 10.1109/IECON.2017.8217023
Yue Zong, M. Dai, Jiaojiao He, Xiaoqian Wang
The study of complex networks has gained much interest. In particular, network coherence is a current hot topic. In this paper, we construct the weighted treelike network with weight factor to be our model. Although some properties have been revealed in weighted treelike networks, studies on their network coherence are still less and remain a challenge. In order to enrich the research of weighted networks, the first-order network coherence is investigated in this paper. We investigates consensus dynamics in a linear dynamical system with additive stochastic disturbances, which is characterized as network coherence by the Laplacian spectrum. Based on the tree structures, we identify a recursive relationship of its eigenvalues at two successive generations of Laplacian matrix. We then compute and derive the exact solutions for the sum of reciprocals of all nonzero Laplacian eigenvalues. The obtained results show that the scalings of first-order coherence with network size obey three laws along with the range of the weight factor. All results in this paper can help us get deeper understanding about the effect of link weight on the properties and functions of networks.
{"title":"Network coherence on the weighted treelike network","authors":"Yue Zong, M. Dai, Jiaojiao He, Xiaoqian Wang","doi":"10.1109/IECON.2017.8217023","DOIUrl":"https://doi.org/10.1109/IECON.2017.8217023","url":null,"abstract":"The study of complex networks has gained much interest. In particular, network coherence is a current hot topic. In this paper, we construct the weighted treelike network with weight factor to be our model. Although some properties have been revealed in weighted treelike networks, studies on their network coherence are still less and remain a challenge. In order to enrich the research of weighted networks, the first-order network coherence is investigated in this paper. We investigates consensus dynamics in a linear dynamical system with additive stochastic disturbances, which is characterized as network coherence by the Laplacian spectrum. Based on the tree structures, we identify a recursive relationship of its eigenvalues at two successive generations of Laplacian matrix. We then compute and derive the exact solutions for the sum of reciprocals of all nonzero Laplacian eigenvalues. The obtained results show that the scalings of first-order coherence with network size obey three laws along with the range of the weight factor. All results in this paper can help us get deeper understanding about the effect of link weight on the properties and functions of networks.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"09 1","pages":"5901-5905"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80076024","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}
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