{"title":"Voltage saturation anti-windup for harmonic controllers in multiple reference frames","authors":"M. Ochoa-Gimenez, S. D'arco, J. Suul","doi":"10.1109/ICIT.2015.7125412","DOIUrl":"https://doi.org/10.1109/ICIT.2015.7125412","url":null,"abstract":"The output voltage references in grid connected Voltage Source Converters must be limited according to the available dc voltage to avoid over-modulation and windup of the current controllers. This may be especially critical for Active Power Filters (APFs), since uncontrolled over-modulation can cause unintended harmonics in the output voltage and interfere with the harmonic compensation. This paper presents an anti-windup mechanism for harmonic current controllers in Multiple Reference Frames (MFRs), which prevents controller windup. The proposed method extends the harmonic compensation capability by allowing operation of each harmonic controller into the non-linear modulation region. This is achieved by selective conditional integration of the errors in each reference frame. Simulation results are presented to demonstrate the effectiveness of the proposed anti-windup mechanism.","PeriodicalId":156295,"journal":{"name":"2015 IEEE International Conference on Industrial Technology (ICIT)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131186400","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}
Kamran Javed, R. Gouriveau, N. Zerhouni, D. Hissel
{"title":"Improving accuracy of long-term prognostics of PEMFC stack to estimate remaining useful life","authors":"Kamran Javed, R. Gouriveau, N. Zerhouni, D. Hissel","doi":"10.1109/ICIT.2015.7125235","DOIUrl":"https://doi.org/10.1109/ICIT.2015.7125235","url":null,"abstract":"Proton Exchange Membrane Fuel cells (PEMFC) are energy systems that facilitate electrochemical reactions to create electrical energy from chemical energy of hydrogen. PEMFC are promising source of renewable energy that can operate on low temperature and have the advantages of high power density and low pollutant emissions. However, PEMFC technology is still in the developing phase, and its large-scale industrial deployment requires increasing the life span of fuel cells and decreasing their exploitation costs. In this context, Prognostics and Health Management of fuel cells is an emerging field, which aims at identifying degradation at early stages and estimating the Remaining Useful Life (RUL) for life cycle management. Indeed, due to prognostics capability, the accurate estimates of RUL enables safe operation of the equipment and timely decisions to prolong its life span. This paper contributes data-driven prognostics of PEMFC by an ensemble of constraint based Summation Wavelet-Extreme Learning Machine (SW-ELM) algorithm to improve accuracy and robustness of long-term prognostics. The SW-ELM is used for ensemble modeling due to its enhanced applicability for real applications as compared to conventional data-driven algorithms. The proposed prognostics model is validated on run-to-failure data of PEMFC stack, which had the life span of 1750 hours. The results confirm capability of the prognostics model to achieve accurate RUL estimates.","PeriodicalId":156295,"journal":{"name":"2015 IEEE International Conference on Industrial Technology (ICIT)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132942284","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}
Luis García-Hernández, C. Cuerno-Rejado, Fernando Gandía-Agüero, Á. Rodríguez-Sevillano, Albert Cerveró, G. Moreno, M. A. Barcala-Montejano, A. Peña‐Rodríguez, Francisco José Estensoro-Astigarraga, Joseba Lasa-Aguirrebengoa, Alberto Pelayo-Rivera
{"title":"Developing models for future real-time platforms: Virtual simulation and design of new components and systems for aircraft and remotely piloted aircraft systems","authors":"Luis García-Hernández, C. Cuerno-Rejado, Fernando Gandía-Agüero, Á. Rodríguez-Sevillano, Albert Cerveró, G. Moreno, M. A. Barcala-Montejano, A. Peña‐Rodríguez, Francisco José Estensoro-Astigarraga, Joseba Lasa-Aguirrebengoa, Alberto Pelayo-Rivera","doi":"10.1109/ICIT.2015.7125389","DOIUrl":"https://doi.org/10.1109/ICIT.2015.7125389","url":null,"abstract":"In the development of electrified and other vehicle systems, the modelling and simulation of the vehicle is very important. With these tools the preliminary design, as well as later detailed studies of the systems developed, allow engineers to spend less time on each phase of their projects or address them with an integrated approach. In addition, this integrated approach provides the possibility of building hardware-in-the-loop models with all the components required. This vehicle modelling and simulation has gained more interest with the increasing use of a wide variety of RPAS, ranging from light weight micro aircraft to large vehicles of various tons. For this reason, the previously-described building tools are the final objective of the developing models to be used in real-time platform projects. The first step present ed i n this paper is to build a simulator that reproduces the behaviour of a selected aircraft and validate it. This paper presents the study of the performances and behaviour of an OPV used to validate the simulator developed later. At the end, some preliminary tests and estimations of the performances for the selected OPV with an electric motor are presented.","PeriodicalId":156295,"journal":{"name":"2015 IEEE International Conference on Industrial Technology (ICIT)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133647101","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":"Experimental validation of a proposal for a 3.5 kVA three-phase magnetic-less solid-state autotransformer (SSAT) based on the switched-capacitor principle","authors":"T. Lazzarin, M. D. Vecchia, I. Barbi","doi":"10.1109/ICIT.2015.7125227","DOIUrl":"https://doi.org/10.1109/ICIT.2015.7125227","url":null,"abstract":"This paper presents experimental results for a three-phase direct ac-ac converter based on switched capacitor principle in delta and wye configuration. This converter employs only capacitors and switches in the power stage, it has a fixed gain, it operates in open loop with constant duty cycle and constant switching frequency and the topology is bidirectional. One advantage of the proposed converter is a power stage with no magnetic elements, which makes the converter appropriated to build solid state autotransformers. A complete analysis of output voltages (phase-shift and amplitude) that are obtained regarding the delta and wye connections of converter is approached and it is corroborated with experimental results for resistive, inductive and nonlinear loads. A 220 V/110 V/3.5 kVA/100 kHz (in switching frequency) prototype was built and tested. For delta and wye connections of the modules, an efficiency of 90.4% and 95.05% was obtained in the rated load, respectively.","PeriodicalId":156295,"journal":{"name":"2015 IEEE International Conference on Industrial Technology (ICIT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133202908","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":"An AC-DC converter with trapezoidal predictive controller for wireless electric vehicle applications","authors":"J. Ramírez-Hernández, I. Araujo-Vargas, M. Rivera","doi":"10.1109/ICIT.2015.7125427","DOIUrl":"https://doi.org/10.1109/ICIT.2015.7125427","url":null,"abstract":"A three-phase AC-DC converter is proposed to charge the battery or DC-link of Wireless Electric Vehicles (WEVs). The topology uses a current-feed, single-output matrix converter and a high frequency (HF) transformer together with an H bridge to obtain regulated DC output voltage, such that the galvanic isolation of the transformer may be used as the wireless link. The converter uses a variant of a predictive current control strategy by calculating a one-step ahead current sample, such that the input currents become virtually sinusoidal with unity power factor, offering the possibility of handling bidirectional power flow. The paper describes the principle of operation of the converter together with a numerical verification of the system under dynamic conditions.","PeriodicalId":156295,"journal":{"name":"2015 IEEE International Conference on Industrial Technology (ICIT)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127838393","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":"A setting method of initial conditions in particle swarm optimization for positioning of a linear stage","authors":"Marino Watanabe, Yukinori Nakamura, S. Wakui","doi":"10.1109/ICIT.2015.7125077","DOIUrl":"https://doi.org/10.1109/ICIT.2015.7125077","url":null,"abstract":"This paper considers the auto-tuning of a feedforward controller in order to improve the performance of stage positioning. Particle swarm optimization (PSO) technique is employed for the auto-tuning of the controller. In the proposed method, firstly, the dimensionality of the particle in PSO is reduced. Then, the initial placement of each particle is determined by considering the nominal value of the stage. By using these two approaches, the tuning time can be shortened. After the auto-tuning, the settling time of the positioning is improved. Effectiveness of proposed methods is shown by simulation.","PeriodicalId":156295,"journal":{"name":"2015 IEEE International Conference on Industrial Technology (ICIT)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127055074","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":"Optimal filtering of synchronized current phasor measurements in a steady state","authors":"I. Ivanov, A. Murzin","doi":"10.1109/ICIT.2015.7125287","DOIUrl":"https://doi.org/10.1109/ICIT.2015.7125287","url":null,"abstract":"Synchronized phasor measurements have recently become one of the key topics in power system research. In order to utilize the new technology to its full potential, many issues need to be addressed. This paper focuses on the problem of synchrophasor measurement precision. A wide range of techniques aimed at the reduction of Gaussian noise present in synchrophasor data are considered. It is shown that the noise standard deviation can be accurately estimated by a variety of wavelets. Best filtering techniques are identified based on analysis of a chunk of real data sourced from phasor measurement units (PMUs) monitoring different 345 kV transmission lines. As a result, current synchrophasors measured by digital fault recorders acting as PMUs can be greatly improved by applying a proper filter.","PeriodicalId":156295,"journal":{"name":"2015 IEEE International Conference on Industrial Technology (ICIT)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127246543","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":"Design of a two-phase PMSM fed by an AC-AC converter","authors":"Ömür Aydoğmuş, Erkan Deniz","doi":"10.1109/ICIT.2015.7125178","DOIUrl":"https://doi.org/10.1109/ICIT.2015.7125178","url":null,"abstract":"A two-phase permanent magnet synchronous motor is designed for using an AC-AC converter drive system fed from a single-phase source. This motor and drive system are proposed to replace with a traditional single-phase motors fed by electricity grid for improving the efficiency of the system. The proposed AC drive system can be connected directly between AC grid and motor without requiring any storage device such as DC-link large capacitors and rectification. The structure of AC-AC converter and modulation technique is presented with vector controlled two-phase PMSM. The converter output voltage and current waveforms and harmonic contents are analyzed with MATLAB simulation program. Additionally, responses of the motor speed and torque are presented for various conditions.","PeriodicalId":156295,"journal":{"name":"2015 IEEE International Conference on Industrial Technology (ICIT)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127419039","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":"Accuracy of positioning spherical objects with a stereo camera system","authors":"M. Pongratz, K. Mironov","doi":"10.1109/ICIT.2015.7125326","DOIUrl":"https://doi.org/10.1109/ICIT.2015.7125326","url":null,"abstract":"The usage of sensory information for automation systems like autonomous robots is rising. For these applications the accuracy of the sensory data is of high importance. This is also valid for the task of transport by throwing where a thrown object has to be caught based on trajectory predicting using input data of a stereo camera system. Here the positioning accuracy of such a system is examined under varied illumination circumstances for a spherical object that is stationary. Both test cases with external illumination (susceptible to reflexion and other effects) and with internal illumination (a self-lightning sphere) show that the vision system is capable to determine the sphere's center position with an accuracy in the magnitude of single digit millimeters. When considering the required prediction accuracy for a catching robot, which is in the range of single digit centimeters, the vision system is a suitable sensor system for the specified task. Future work will target the accuracy determination of moving objects and the utilization of the vision system for the task for transport by throwing.","PeriodicalId":156295,"journal":{"name":"2015 IEEE International Conference on Industrial Technology (ICIT)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115487853","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":"Nonexistent harmonics generation phenomenon caused by the processing of DQ transformation in power quality applications","authors":"Mario González, V. Cárdenas, R. Alvarez","doi":"10.1109/ICIT.2015.7125286","DOIUrl":"https://doi.org/10.1109/ICIT.2015.7125286","url":null,"abstract":"A phenomenon that occurs when using the DQ Transformation to obtain the compensation references in active filter applications is presented in this paper, in which new harmonics that had not existed originally in the system, are injected to it. Although these new injected harmonics have very low magnitude, they do exist and correct processing must be assured in order not to increase their magnitudes. The phenomenon is generated by the filtering action at the dq reference frame; the filter does not have an ideal behavior, it inserts a gain or attenuation and a phase-shift, different for each frequency component. The phenomenon takes place if only the d signal is filtered out to separate the dc component. But, if both d and q components are filtered, the phenomenon disappears. However, in fact the THD of the compensated variables are lower using the scheme that injects new harmonics than using the one that does not. This phenomenon is formally analyzed under general three-phase unbalanced conditions.","PeriodicalId":156295,"journal":{"name":"2015 IEEE International Conference on Industrial Technology (ICIT)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115716135","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}