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2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)最新文献

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Turbulent Flame Monitoring Using Spectral Estimation Techniques 利用光谱估计技术监测湍流火焰
2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA) Pub Date : 2021-03-22 DOI: 10.1109/ICAACCA51523.2021.9465298
Fernando Castillo, Luis E. Arias, Hugo O. Garcés, A. Rojas
{"title":"Turbulent Flame Monitoring Using Spectral Estimation Techniques","authors":"Fernando Castillo, Luis E. Arias, Hugo O. Garcés, A. Rojas","doi":"10.1109/ICAACCA51523.2021.9465298","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465298","url":null,"abstract":"A flame emits energy over a wide spectral region, and its associated spectra contain both continuous and discontinuous components, closely related to the combustion process current state. However, the non-linear and turbulent nature of the flame, high dimensionality of the spectral data, and the overlap between continuous and discontinuous spectral emissions requires the use of complex method to obtain valuable information for combustion closed loop-control and optimization. This work analyzes the spectral emission of the flame emitted by LPG flames to compute high resolution spectra combining the Maloney-Wandell spectral recovery method and field information of flame images with low spectral resolution. Then, we obtain different variables such as the flame temperature (in K) and local radiance (in μW=cm2), performing a dynamic, spectral and spatial combustion diagnostics.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125144936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simulation and mitigation of subsynchronous resonance in power systems 电力系统次同步谐振的仿真与缓解
2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA) Pub Date : 2021-03-22 DOI: 10.1109/ICAACCA51523.2021.9465240
Jorge Varela, Miguel Parada
{"title":"Simulation and mitigation of subsynchronous resonance in power systems","authors":"Jorge Varela, Miguel Parada","doi":"10.1109/ICAACCA51523.2021.9465240","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465240","url":null,"abstract":"This paper presents a detailed time domain simulation of a synchronous generator connected to an infinite bus though a transmission line with series capacitors, for the purpose of analyzing the causes and effects of subsynchronous resonance. To mitigate the serious damage that this phenomenon might cause to the generation unit shafts, a supplementary control of the synchronous generator excitation system, and the NGH damping scheme are analyzed. The effectiveness of these mitigation methods is verified by numerical simulations on MATLAB, based on Runge-Kutta algorithms.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131570810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Droop Based Control Strategy for Bidirectional Power Regulation in Hybrid ACmC Microgrids 基于下垂的混合ACmC微电网双向功率调节控制策略
2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA) Pub Date : 2021-03-22 DOI: 10.1109/ICAACCA51523.2021.9465203
C. Rodríguez, Matias Malhue, M. Díaz, Enrique Espina, F. Rojas
{"title":"A Droop Based Control Strategy for Bidirectional Power Regulation in Hybrid ACmC Microgrids","authors":"C. Rodríguez, Matias Malhue, M. Díaz, Enrique Espina, F. Rojas","doi":"10.1109/ICAACCA51523.2021.9465203","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465203","url":null,"abstract":"Hybrid Alternating Current (AC) and Direct Current (DC) microgrids have been in the spotlight in the last years because they allow connection of AC and DC resources and reduces multiple power conversion in single AC or DC microgrids. The AC and DC stages are connected through interlinking converters, which manage the power transference among both sub-microgrids using droop control strategies for each single AC or DC microgrid. This paper proposes a threestage droop control strategy to regulate the power inside the sub-microgrids at the same time that bidirectional AC-DC power transference is enabled. Simulation results obtained with a hybrid microgrid model composed of five generation units are presented to validate the effectiveness of this proposal..","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125256538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Impact of the Electrical Energy-Tariff and Vehicle-to-Grid in the Total Cost of Ownership of Electromobility Projects 电力能源关税和车辆到电网对电动汽车项目总拥有成本的影响
2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA) Pub Date : 2021-03-22 DOI: 10.1109/ICAACCA51523.2021.9465273
Á. Fernández, M. Díaz, F. Rojas, L. Reyes-Chamorro, H. Chávez
{"title":"Impact of the Electrical Energy-Tariff and Vehicle-to-Grid in the Total Cost of Ownership of Electromobility Projects","authors":"Á. Fernández, M. Díaz, F. Rojas, L. Reyes-Chamorro, H. Chávez","doi":"10.1109/ICAACCA51523.2021.9465273","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465273","url":null,"abstract":"This paper evaluates the impact of the electric power tariff on the total cost of ownership of electric vehicle purchase projects. Projects are analysed comparing electric vehicles with equivalent internal combustion engines vehicles. The annual equilibrium distance, Chilean energy tariffs, government incentives, and vehicle-to-grid utilities are considered in the analyses. Additionally, the current regulation in Chile is compared with special electrical vehicle energy tariffs applied in other countries is analysed to find possible spots to make electric vehicle projects more convenient.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131807815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Comparison Among Different Staggered Optimized Gating Patterns for Asymmetric Single-Phase Current Source Inverters 非对称单相电流源逆变器不同交错优化门控模式的比较
2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA) Pub Date : 2021-03-22 DOI: 10.1109/ICAACCA51523.2021.9465261
Hugo Gallardo, Luis Martinez, J. Guzmán, P. Melín, C. Baier, Javier A. Muñoz, E. Espinosa
{"title":"A Comparison Among Different Staggered Optimized Gating Patterns for Asymmetric Single-Phase Current Source Inverters","authors":"Hugo Gallardo, Luis Martinez, J. Guzmán, P. Melín, C. Baier, Javier A. Muñoz, E. Espinosa","doi":"10.1109/ICAACCA51523.2021.9465261","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465261","url":null,"abstract":"In previous work, it was proposed to use multilevel current source converters to increase the current capacity as well as improve the harmonic profile of medium voltage and high current drives. Recent publications suggest that both (a) its intrinsic booster characteristics and (b) its easy way to handle independent DC sources operating in parallel make this topology an attractive alternative for the direct connection of photovoltaic plants to the grid. Furthermore, staggered optimized patterns were proposed together to modular topologies regarding the improvement on harmonic profile of injected currents to the grids. One of these techniques are the staggered Selective Harmonic Elimination. An alternative is the straightforward optimization for reduce the error among a time-based reference and the modulated current pattern. This work presents a comparison between three optimized patterns for the operation of staggered patterns in current source converters, for both symmetric and asymmetric cases. Theoretical results that are validated by simulation are presented.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"70 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120924747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Common-Mode Voltage Reduction in a VSI Inverter Applying Sequential Predictive Control 应用序贯预测控制的VSI逆变器共模电压降低
2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA) Pub Date : 2021-03-22 DOI: 10.1109/ICAACCA51523.2021.9465321
D. Murillo-Yarce, M. Rivera, C. Restrepo, Javier A. Muñoz, C. Baier, R. Rodríguez, P. Wheeler, P. Zanchetta, G. Mirzaeva
{"title":"Common-Mode Voltage Reduction in a VSI Inverter Applying Sequential Predictive Control","authors":"D. Murillo-Yarce, M. Rivera, C. Restrepo, Javier A. Muñoz, C. Baier, R. Rodríguez, P. Wheeler, P. Zanchetta, G. Mirzaeva","doi":"10.1109/ICAACCA51523.2021.9465321","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465321","url":null,"abstract":"In the classical predictive control (CPC) implementation a cost function designed in terms of the control objectives and constants known as weighting factors must be minimized. Weighting factors are usually obtained by trial and error since there is no methodology to find the best factors, which also improve the controller performance. One possible solution is sequential predictive control (SPC) that proposes to eliminate weighting factors by sequential evaluation of simple cost functions. The contribution of this work is to analyze in detail the SPC performance and compare the results with a classic predictive current controller, in a VSI converter feeding an RL load where common-mode voltage is also reduced. Matlab/Simulink simulation results show that the SPC technique is able to reduce the common-mode voltage by half and still obtaining a balanced current system with an allowable THD, which is not feasible for the CPC technique. These findings demonstrate that SPC can improve results obtained with CPC without using weighting factors.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115078890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A causal modelling for desertion and graduation prediction using Bayesian networks: a Chilean case 用贝叶斯网络进行遗弃和毕业预测的因果模型:智利案例
2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA) Pub Date : 2021-03-22 DOI: 10.1109/ICAACCA51523.2021.9465333
B. Peralta, Jorge Salazar, M. Lévano, O. Nicolis
{"title":"A causal modelling for desertion and graduation prediction using Bayesian networks: a Chilean case","authors":"B. Peralta, Jorge Salazar, M. Lévano, O. Nicolis","doi":"10.1109/ICAACCA51523.2021.9465333","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465333","url":null,"abstract":"Currently the high rates of university dropouts and low graduation are social problems that are very relevant in Chilean society. Predicting these events can allow institutions to take action to avoid them. The typical prediction models based on machine learning are capable of making reliable predictions, however they do not allow to understand the causality that originates both events, which could help to take better actions. This work proposes to find, analyze and weigh the causal relationships that allow predicting whether a student will drop out or will graduate according to the information available using a framework with Bayesian networks. The study is based on real data from the Universidad Católica de Temuco in Chile collected over three years. The results reveal variables and relevant relationships according the opinion of human experts, which suggest that the proposed model provides better capabilities to represent the causality of university dropout and graduation. From the results we believe that it is feasible to design better retention policies and timely degree at a university.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116499069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Visual recognition incorporating features of self-supervised models for the use of unlabelled data 结合自监督模型特征的视觉识别，用于使用未标记的数据
2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA) Pub Date : 2021-03-22 DOI: 10.1109/ICAACCA51523.2021.9465233
G. Díaz, O. Nicolis, B. Peralta
{"title":"Visual recognition incorporating features of self-supervised models for the use of unlabelled data","authors":"G. Díaz, O. Nicolis, B. Peralta","doi":"10.1109/ICAACCA51523.2021.9465233","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465233","url":null,"abstract":"Automatic visual object recognition has gained great popularity in the world and is successfully applied to various areas such as robotics, security or commerce using deep learning techniques. Training in machine learning models based on deep learning requires an enormous amount of supervised data, which is expensive to obtain. An alternative is to use semi-supervised models as co-training where the views given by deep networks are differentiated using models that incorporate lateral information from each training object. In this document, we describe and test a co-training model for deep networks, adding as auxiliary inputs to self-supervised network features. The results show that the proposed model managed to converge using a few dozen iterations, exceeding 2 % in precision compared to recent models. This model, despite its simplicity, manages to be competitive with more complex recent works. As future work, we plan to modify deep self-supervised networks to increase diversity in co-training learning.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134203988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Strong stability for multivariable LTI systems 多变量LTI系统的强稳定性
2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA) Pub Date : 2021-03-22 DOI: 10.1109/ICAACCA51523.2021.9465323
R. G. Orozco
{"title":"Strong stability for multivariable LTI systems","authors":"R. G. Orozco","doi":"10.1109/ICAACCA51523.2021.9465323","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465323","url":null,"abstract":"In a proposed Observer-Controller Feedback Configuration (OCFC), a class of proper multivariable causal Linear Time-Invariant (LTI) square systems with a detectable and stabilizable realization, is considered. This configuration is based on pseudo-inverses of the input and output matrices, as well as linear robust pre-compensator $K_{1}(s)$ and dual post-compensator $K_{2}(s)$ stabilizing a full actuation full information plant. $K_{1}(s)$ and $K_{2}(s)$ are low-complexity controllers that belong to the Family of All Stabilizing Controllers (FASC) and their free control parameters are selected to achieve strong stability. The separation principle is fulfilled, and necessary and sufficient stability conditions are provided for the overall system to achieve a stable closed-loop system and stable controller. An algebraic approach is used to find these stability conditions that are useful for the pole placement control problem. A simulation of a mechanical system is used to demonstrate the findings.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"348 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134326118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
LQR and PID Control Design for a Pneumatic Diaphragm Valve 气动隔膜阀的LQR和PID控制设计
2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA) Pub Date : 2021-03-22 DOI: 10.1109/ICAACCA51523.2021.9465250
G. Conte, F. Marques, Claudio Garcia
{"title":"LQR and PID Control Design for a Pneumatic Diaphragm Valve","authors":"G. Conte, F. Marques, Claudio Garcia","doi":"10.1109/ICAACCA51523.2021.9465250","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465250","url":null,"abstract":"This work demonstrates the design and compares the performance of two different digital control techniques for a modeled pneumatic diaphragm valve. The valve model is derived using first-principles modeling, the Karnopp friction model and approximates the I/P converter dynamics with a first order filter. The digital PID and LQR controllers were chosen to compensate the valve friction. A proposed contribution is to implement a digital LQR control using the Bryson rule and the Pincer technique to tune the matrices Q and R based on requirements response, maximum deviation of states variables and control effort. The robustness of the LQR controller compared to the PID controller is presented in this paper.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132575973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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