Pub Date : 2015-11-01DOI: 10.1109/IECON.2015.7392305
Türker Türker, U. Buyukkeles, H. Mese, A. Bakan
A discrete-time current controller is presented for the current loop of the permanent magnet synchronous motor drives. Firstly, the difference equations of current errors are obtained for constant reference values. Then, a dead-beat controller is designed to drive the dq-axes currents to the desired values. Discrete-time integral action with an anti-windup scheme is added to the dead-beat structure to achieve a better steady-state behaviour. In order to improve the transient properties of the controller, a current prediction scheme based on dead-beat structure is also introduced to the controller. Finally, the proposed controller is implemented through numerical simulations to illustrate the effectiveness for both transient and steady-state responses.
{"title":"A discrete-time current controller for permanent magnet synchronous motor drives","authors":"Türker Türker, U. Buyukkeles, H. Mese, A. Bakan","doi":"10.1109/IECON.2015.7392305","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392305","url":null,"abstract":"A discrete-time current controller is presented for the current loop of the permanent magnet synchronous motor drives. Firstly, the difference equations of current errors are obtained for constant reference values. Then, a dead-beat controller is designed to drive the dq-axes currents to the desired values. Discrete-time integral action with an anti-windup scheme is added to the dead-beat structure to achieve a better steady-state behaviour. In order to improve the transient properties of the controller, a current prediction scheme based on dead-beat structure is also introduced to the controller. Finally, the proposed controller is implemented through numerical simulations to illustrate the effectiveness for both transient and steady-state responses.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"180 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125820245","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392295
F. Takemura, N. Sakagami, Satoru Takahashi, R. Ono, Yumiko Nakanishi, Natsuki Uechi, Kazuma Noha, K. Kawabata, S. Sagara, C. Katagiri, Yuji Yamamoto
This paper presents an image-based position measurement of underwater objects using a low-cost maritime mobile robot with a monocular camera. Visual recognition of distant underwater objects is possible in the water with high transparency, for example, in the coastal sea area of Okinawa prefecture, Japan. In this paper, we apply the proposed method to estimate the position of an old anchor that is at a deep of 30 [m] and is estimated to be hundreds-of-years-old in an archaeological site in Ishigaki Island. We explain the measurement principle of the proposed method and the developed system. Moreover, we describe the experiment conducted off the coast of Ishigaki Island and show the experimental results of the proposed method.
{"title":"A basic experiment for image-based position measurement of objects at sea","authors":"F. Takemura, N. Sakagami, Satoru Takahashi, R. Ono, Yumiko Nakanishi, Natsuki Uechi, Kazuma Noha, K. Kawabata, S. Sagara, C. Katagiri, Yuji Yamamoto","doi":"10.1109/IECON.2015.7392295","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392295","url":null,"abstract":"This paper presents an image-based position measurement of underwater objects using a low-cost maritime mobile robot with a monocular camera. Visual recognition of distant underwater objects is possible in the water with high transparency, for example, in the coastal sea area of Okinawa prefecture, Japan. In this paper, we apply the proposed method to estimate the position of an old anchor that is at a deep of 30 [m] and is estimated to be hundreds-of-years-old in an archaeological site in Ishigaki Island. We explain the measurement principle of the proposed method and the developed system. Moreover, we describe the experiment conducted off the coast of Ishigaki Island and show the experimental results of the proposed method.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125882989","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392287
A. Bhattacharya, Brijesh Brijwasi, Haris Ahmed
In this paper, direct matrix converter (DMC) based wind energy systems equipped with Permanent Magnet Synchronous Generators (PMSG) is proposed. To extract the maximum available power from the wind, the Matrix Converter (MC) is controlled using the venturini based algorithm together with the voltage oriented vector control (VOC) scheme to regulate active and reactive power (Power Regulation Technique). In this scheme, the maximum extractable power is derived from wind turbine power curves by using Maximum Power Point Tracking (MPPT) is set as reference active power while reference for reactive power is taken as zero. The change in generated power due to change in wind speed are processed through proportional & integral (PI) controllers to regulate the voltage gain of Matrix Converter (MC). In result, the desired regulation of powers is carried out. To evaluate the performances of proposed scheme, Matlab/Simulink based model is tested under varying wind speed. From the simulation results it is confirm that MC with adequate input filters and proposed control scheme is able to extract the maximum power from the wind energy conversion system (WECS) and fed directly to the existing grid at desired output frequency and voltage at nearly unitary input power factor.
提出了一种基于直接矩阵变换器(DMC)的永磁同步发电机风力发电系统。为了从风中提取最大可用功率，矩阵变换器(MC)采用基于文丘里尼算法和电压定向矢量控制(VOC)方案进行控制，以调节有功和无功功率(功率调节技术)。该方案采用最大功率点跟踪(maximum power Point Tracking, MPPT)从风电机组功率曲线中获取最大可提取功率，有功功率设为参考，无功功率设为零。通过比例积分(PI)控制器对风速变化引起的发电量变化进行处理，调节矩阵变换器(MC)的电压增益。结果，实现了期望的权力调节。为了评估该方案的性能，基于Matlab/Simulink的模型在不同风速下进行了测试。仿真结果证实，采用适当的输入滤波器和所提出的控制方案，MC能够从风能转换系统(WECS)中提取出最大功率，并在输入功率因数接近单一的情况下以所需的输出频率和电压直接馈送到现有电网。
{"title":"A novel PMSG based WECS for grid integration using DMC","authors":"A. Bhattacharya, Brijesh Brijwasi, Haris Ahmed","doi":"10.1109/IECON.2015.7392287","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392287","url":null,"abstract":"In this paper, direct matrix converter (DMC) based wind energy systems equipped with Permanent Magnet Synchronous Generators (PMSG) is proposed. To extract the maximum available power from the wind, the Matrix Converter (MC) is controlled using the venturini based algorithm together with the voltage oriented vector control (VOC) scheme to regulate active and reactive power (Power Regulation Technique). In this scheme, the maximum extractable power is derived from wind turbine power curves by using Maximum Power Point Tracking (MPPT) is set as reference active power while reference for reactive power is taken as zero. The change in generated power due to change in wind speed are processed through proportional & integral (PI) controllers to regulate the voltage gain of Matrix Converter (MC). In result, the desired regulation of powers is carried out. To evaluate the performances of proposed scheme, Matlab/Simulink based model is tested under varying wind speed. From the simulation results it is confirm that MC with adequate input filters and proposed control scheme is able to extract the maximum power from the wind energy conversion system (WECS) and fed directly to the existing grid at desired output frequency and voltage at nearly unitary input power factor.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125937069","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392208
A. Otsuka, F. Nagata, M. Habib, Keigo Watanabe
Swarm robotics has been focused in order to express more advanced performance using lower performance devices. Swarming behaviors of multiple robots are need for working in industries or in places where a human cannot enter. In the natural world, some creatures which have simple biological function can acquire higher intelligence by swarming. Therefore, biomimetic method is effective in order to establish an efficient swarming system. In the swarming robotic system, because cost of the system increases in proportion to number of a robot, devices of robots are required to be simple. Furthermore, an implemented algorithm into robots should be designed considering a simplification of the individual robot with keeping correctness of the model of the robots. In this paper, a simple algorithm for swarming and following behaviors is proposed assuming that robots had only three sensors to detect distance information. The algorithm consists of nine patterns according to information of three PSD sensors. In the proposed algorithm, each robot's movement is determined based on the inputs of three distance sensors. Then, a virtual simulator for multiple mobile robotics is developed to evaluate the performance of the algorithm, in which the movement of a virtual robot is modeled based on an actual three-wheeled mobile robot. It is assumed in the simulator that the robot moves only to six directions and rotates counterclockwise or clockwise on the position; the robots do not communicate with each other; shape and kinematics of the robot are simplified in the two-dimensional plane. Several simulations using the proposed algorithm are conducted to evaluate the performance for the swarming and following behaviors. Results of the simulations show that the proposed algorithm can provide swarming and following behaviors.
{"title":"Algorithm for swarming and following behaviors of multiple mobile robots","authors":"A. Otsuka, F. Nagata, M. Habib, Keigo Watanabe","doi":"10.1109/IECON.2015.7392208","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392208","url":null,"abstract":"Swarm robotics has been focused in order to express more advanced performance using lower performance devices. Swarming behaviors of multiple robots are need for working in industries or in places where a human cannot enter. In the natural world, some creatures which have simple biological function can acquire higher intelligence by swarming. Therefore, biomimetic method is effective in order to establish an efficient swarming system. In the swarming robotic system, because cost of the system increases in proportion to number of a robot, devices of robots are required to be simple. Furthermore, an implemented algorithm into robots should be designed considering a simplification of the individual robot with keeping correctness of the model of the robots. In this paper, a simple algorithm for swarming and following behaviors is proposed assuming that robots had only three sensors to detect distance information. The algorithm consists of nine patterns according to information of three PSD sensors. In the proposed algorithm, each robot's movement is determined based on the inputs of three distance sensors. Then, a virtual simulator for multiple mobile robotics is developed to evaluate the performance of the algorithm, in which the movement of a virtual robot is modeled based on an actual three-wheeled mobile robot. It is assumed in the simulator that the robot moves only to six directions and rotates counterclockwise or clockwise on the position; the robots do not communicate with each other; shape and kinematics of the robot are simplified in the two-dimensional plane. Several simulations using the proposed algorithm are conducted to evaluate the performance for the swarming and following behaviors. Results of the simulations show that the proposed algorithm can provide swarming and following behaviors.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126178722","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392152
W. Ruengkitpinyo, P. Vejjanugraha, W. Kongprawechnon, T. Kondo, P. Bunnun, H. Kaneko
This study introduces a glaucoma screening system which is suitable for both normal eyesight and myopia. For myopia eye, only one clinical indicator is not sufficient. Therefore, cup-to-disc ratio and rim width based on ISNT rule are used as indicators in this screening system. First, image segmentation is performed to obtain optic cup, optic disc and rim width. These information will be used as features in glaucoma classification step. The support vector machine (SVM) is selected as a classifier. According to the results, our proposed method is an efficient system for screening glaucoma.
{"title":"An automatic glaucoma screening algorithm using cup-to-disc ratio and ISNT rule with support vector machine","authors":"W. Ruengkitpinyo, P. Vejjanugraha, W. Kongprawechnon, T. Kondo, P. Bunnun, H. Kaneko","doi":"10.1109/IECON.2015.7392152","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392152","url":null,"abstract":"This study introduces a glaucoma screening system which is suitable for both normal eyesight and myopia. For myopia eye, only one clinical indicator is not sufficient. Therefore, cup-to-disc ratio and rim width based on ISNT rule are used as indicators in this screening system. First, image segmentation is performed to obtain optic cup, optic disc and rim width. These information will be used as features in glaucoma classification step. The support vector machine (SVM) is selected as a classifier. According to the results, our proposed method is an efficient system for screening glaucoma.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123754568","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392594
S. Tolani, P. Sensarma
Widespread deployment of Voltage Source Inverters (VSI-s) in high penetration applications like distributed generation, UPS and stand-alone renewable energy conditioning imposes stringent demands on reliability and output voltage regulation. Reported literature offers numerous solutions for output voltage regulation, which includes twin aspects of command tracking and output impedance control. Most of these methods rely on measurement of at least two separate variables per phase, which compromises overall reliability. This paper focuses on output voltage regulation approaches requiring measurement of a single variable, per phase. It is analytically shown that single-loop approaches are inadequate for satisfying both reference tracking and output impedance specifications. Subsequently, two new improvements using a multi-loop approach are proposed and performance of these techniques are predicted analytically. Experimental results are presented to confirm the validity of suggested approaches.
{"title":"Output impedance mitigation at filter resonance for single and three-phase UPS systems with reduced sensor count","authors":"S. Tolani, P. Sensarma","doi":"10.1109/IECON.2015.7392594","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392594","url":null,"abstract":"Widespread deployment of Voltage Source Inverters (VSI-s) in high penetration applications like distributed generation, UPS and stand-alone renewable energy conditioning imposes stringent demands on reliability and output voltage regulation. Reported literature offers numerous solutions for output voltage regulation, which includes twin aspects of command tracking and output impedance control. Most of these methods rely on measurement of at least two separate variables per phase, which compromises overall reliability. This paper focuses on output voltage regulation approaches requiring measurement of a single variable, per phase. It is analytically shown that single-loop approaches are inadequate for satisfying both reference tracking and output impedance specifications. Subsequently, two new improvements using a multi-loop approach are proposed and performance of these techniques are predicted analytically. Experimental results are presented to confirm the validity of suggested approaches.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123796715","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392215
Bo Zhou, Meng Li, K. Qian, X. Dai, Fang Fang
In this paper, an efficient stereo vision based visual odometry algorithm is proposed to solve the long-range outdoor localization problem of a mobile robot using a binocular camera. An improved method of feature matching and tracking based on SIFT algorithm is presented. The color information is used to effectively eliminate wrong feature matching, and the BBF tree is adopted to speed up the search process in the feature matching. The consistency of space position of feature points in previous and current frame is checked to filtering the wrong-matched points in the feature tracking algorithm. Hence the real-time performance and accuracy of the matching and tracking algorithm are improved. A hierarchical motion estimation method is also presented. Firstly the least squares principle combined with RANSAC filtering is employed to obtain the initial pose estimation. Secondly the two-stage bundle adjustment is used to optimize the motion estimation results. Furthermore Kalman filter is used to fuse the visual information with inertial navigation to improve the robustness and stability of overall position systems. Experimental results show the reliability and effectiveness of the proposed algorithm.
{"title":"Long-range outdoor localization of a mobile robot using a binocular camera","authors":"Bo Zhou, Meng Li, K. Qian, X. Dai, Fang Fang","doi":"10.1109/IECON.2015.7392215","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392215","url":null,"abstract":"In this paper, an efficient stereo vision based visual odometry algorithm is proposed to solve the long-range outdoor localization problem of a mobile robot using a binocular camera. An improved method of feature matching and tracking based on SIFT algorithm is presented. The color information is used to effectively eliminate wrong feature matching, and the BBF tree is adopted to speed up the search process in the feature matching. The consistency of space position of feature points in previous and current frame is checked to filtering the wrong-matched points in the feature tracking algorithm. Hence the real-time performance and accuracy of the matching and tracking algorithm are improved. A hierarchical motion estimation method is also presented. Firstly the least squares principle combined with RANSAC filtering is employed to obtain the initial pose estimation. Secondly the two-stage bundle adjustment is used to optimize the motion estimation results. Furthermore Kalman filter is used to fuse the visual information with inertial navigation to improve the robustness and stability of overall position systems. Experimental results show the reliability and effectiveness of the proposed algorithm.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125569505","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392905
Sousuke Nakamura, Yoshinori Kakinuma, Keita Akiho, H. Hashimoto
In recent years, energy management of the mobile device is researched in two approaches; energy saving and energy charging. In terms of energy charging, though the wireless charging and the energy harvesting technologies have been proposed, these technologies could not satisfy all of the criteria; location-free, connection-free, reliable and human-safe. In response, the authors are proposing a new energy management method for mobile device based on the Wireless Charging Robot (i.e., mobile robot with wireless charging function via magnetic coupled resonances). It operates in the combination of two charging tasks; charging the mobile device from robots (i.e., mobile device charging task), and charging the robot from charging stations connected to power system (i.e., self charging task). In this manner, robots mediate the energy delivery from the power system to the mobile devices, and consequently, the system satisfies all of these criteria. This paper introduces the abstract architecture and procedure of the overall system with the basic method for designing the wireless charging function in the energy management system.
{"title":"Prototype design of energy management system for mobile device via Wireless Charging Robot","authors":"Sousuke Nakamura, Yoshinori Kakinuma, Keita Akiho, H. Hashimoto","doi":"10.1109/IECON.2015.7392905","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392905","url":null,"abstract":"In recent years, energy management of the mobile device is researched in two approaches; energy saving and energy charging. In terms of energy charging, though the wireless charging and the energy harvesting technologies have been proposed, these technologies could not satisfy all of the criteria; location-free, connection-free, reliable and human-safe. In response, the authors are proposing a new energy management method for mobile device based on the Wireless Charging Robot (i.e., mobile robot with wireless charging function via magnetic coupled resonances). It operates in the combination of two charging tasks; charging the mobile device from robots (i.e., mobile device charging task), and charging the robot from charging stations connected to power system (i.e., self charging task). In this manner, robots mediate the energy delivery from the power system to the mobile devices, and consequently, the system satisfies all of these criteria. This paper introduces the abstract architecture and procedure of the overall system with the basic method for designing the wireless charging function in the energy management system.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126946837","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392181
U. Habib, G. Zucker, Max Blochle, Florian Judex, Jan Haase
To achieve energy efficiency in buildings, a lot of raw data is recorded, during the operation of buildings. This recorded raw data is further used for the analysis of the performance of buildings and its different components e.g. Heating, Ventilation and Air-Conditioning (HVAC). To save time and energy it is required to ensure resilience of the data by detecting and replacing outliers (i.e. data samples that are not plausible) in the data before detailed analysis. This paper discusses the steps involved for detecting outliers in the data obtained from absorption chiller using their On/Off state information. It also proposes a method for automatic detection of On/Off and/or Missing Data status of the chiller. The technique uses two layer K-Means clustering for detecting On/Off as well as Missing Data state of the chiller. After automatic detection of the chiller On/Off cycle, a method for outlier detection is proposed using Z-Score normalization based on the On/Off cycle state of chillers and clustering outliers by Expectation Maximization clustering algorithm. Moreover, the results of filling the missing values with regression and linear interpolation for short and long periods are elaborated. All proposed methods are applied to real building data and the results are discussed.
{"title":"Outliers detection method using clustering in buildings data","authors":"U. Habib, G. Zucker, Max Blochle, Florian Judex, Jan Haase","doi":"10.1109/IECON.2015.7392181","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392181","url":null,"abstract":"To achieve energy efficiency in buildings, a lot of raw data is recorded, during the operation of buildings. This recorded raw data is further used for the analysis of the performance of buildings and its different components e.g. Heating, Ventilation and Air-Conditioning (HVAC). To save time and energy it is required to ensure resilience of the data by detecting and replacing outliers (i.e. data samples that are not plausible) in the data before detailed analysis. This paper discusses the steps involved for detecting outliers in the data obtained from absorption chiller using their On/Off state information. It also proposes a method for automatic detection of On/Off and/or Missing Data status of the chiller. The technique uses two layer K-Means clustering for detecting On/Off as well as Missing Data state of the chiller. After automatic detection of the chiller On/Off cycle, a method for outlier detection is proposed using Z-Score normalization based on the On/Off cycle state of chillers and clustering outliers by Expectation Maximization clustering algorithm. Moreover, the results of filling the missing values with regression and linear interpolation for short and long periods are elaborated. All proposed methods are applied to real building data and the results are discussed.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122322591","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392615
Andoni Urtasun, E. Barrios, P. Sanchis, L. Marroyo
Frequency-based energy management strategies have been proposed for stand-alone systems with either centralized or distributed energy storage. This paper proposes a methodology for the design of the control parameters which ensures stability in both type of systems. As a result, the inverter manufacturer can implement one sole strategy, regardless of whether the expected stand-alone system is centralized or distributed. In addition, the battery inverter becomes more versatile since it can be used alone or in parallel with other battery inverters. Simulation results corroborate the theoretical analysis and demonstrate that energy management is carried out with no need of communication cables for a system with 1, 2 or 3 battery inverters with the same firmware.
{"title":"Frequency-based energy management of stand-alone systems: Design of the control parameters for high versatility","authors":"Andoni Urtasun, E. Barrios, P. Sanchis, L. Marroyo","doi":"10.1109/IECON.2015.7392615","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392615","url":null,"abstract":"Frequency-based energy management strategies have been proposed for stand-alone systems with either centralized or distributed energy storage. This paper proposes a methodology for the design of the control parameters which ensures stability in both type of systems. As a result, the inverter manufacturer can implement one sole strategy, regardless of whether the expected stand-alone system is centralized or distributed. In addition, the battery inverter becomes more versatile since it can be used alone or in parallel with other battery inverters. Simulation results corroborate the theoretical analysis and demonstrate that energy management is carried out with no need of communication cables for a system with 1, 2 or 3 battery inverters with the same firmware.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122380490","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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