Pub Date : 2019-10-01DOI: 10.1109/IECON.2019.8927380
Ezequiel Rodriguez, R. Leyva, G. Farivar, H. D. Tafti, C. Townsend, J. Pou
This paper proposes a multi-input linear time-variant control law based on the incremental passivity theory for cascaded H-bridge (CHB) low-capacitance static compensators (LC-StatComs). The proposed control law guarantees global asymptotic stability of the system and controls the capacitor voltages and inductor current without assuming fast dynamics in the current and slow dynamics in voltages. This is particularly important for LC-StatCom applications as the control of the inductor current and capacitor voltages are inherently coupled due to the reduced capacitance. After introducing the incremental model of the converter, a passivity-based control that ensures the global stability is derived. Simulation results on a seven-level 1-kVA CHB LC-StatCom are shown to corroborate its excellent performance in steady-state and during transients.
提出了一种基于增量无源理论的级联h桥(CHB)低电容静态补偿器(LC-StatComs)多输入线性时变控制律。该控制律既保证了系统的全局渐近稳定，又能控制电容器电压和电感电流，而不需要假设电流的快速动态和电压的慢动态。这对于LC-StatCom应用尤其重要，因为电感电流和电容电压的控制由于减小的电容而固有耦合。在引入增量模型的基础上，推导了一种基于无源的全局稳定控制方法。在7电平1 kva CHB LC-StatCom上的仿真结果证实了其在稳态和瞬态中的优异性能。
{"title":"Passivity Control in Multilevel Cascaded H-Bridge Converters: A Variable Gain Approach","authors":"Ezequiel Rodriguez, R. Leyva, G. Farivar, H. D. Tafti, C. Townsend, J. Pou","doi":"10.1109/IECON.2019.8927380","DOIUrl":"https://doi.org/10.1109/IECON.2019.8927380","url":null,"abstract":"This paper proposes a multi-input linear time-variant control law based on the incremental passivity theory for cascaded H-bridge (CHB) low-capacitance static compensators (LC-StatComs). The proposed control law guarantees global asymptotic stability of the system and controls the capacitor voltages and inductor current without assuming fast dynamics in the current and slow dynamics in voltages. This is particularly important for LC-StatCom applications as the control of the inductor current and capacitor voltages are inherently coupled due to the reduced capacitance. After introducing the incremental model of the converter, a passivity-based control that ensures the global stability is derived. Simulation results on a seven-level 1-kVA CHB LC-StatCom are shown to corroborate its excellent performance in steady-state and during transients.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128163340","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 : 2019-10-01DOI: 10.1109/IECON.2019.8926960
Fanghong Guo, Zhijie Lian, C. Wen, Q. Xu
This paper presents a decentralized secondary control scheme to solve the voltage restoration and current sharing problem in islanded DC microgrid (MG) systems. The existing solutions to this problem are either centralized control or distributed control based approaches. For these methods, communication and information exchange is inevitable. In order to improve the system robustness and reduce the system implementation cost, a decentralized communication-free leaky integral control is proposed in this paper, which is able to realize the same control goals without any communication. The stability of overall system together with proposed decentralized controller is analysed. A test DC MG system is built in Matlab Simulink to validate the effectiveness of proposed control method.
{"title":"Decentralized Communication-free Secondary Voltage Restoration and Current Sharing Control for Islanded DC Microgrids","authors":"Fanghong Guo, Zhijie Lian, C. Wen, Q. Xu","doi":"10.1109/IECON.2019.8926960","DOIUrl":"https://doi.org/10.1109/IECON.2019.8926960","url":null,"abstract":"This paper presents a decentralized secondary control scheme to solve the voltage restoration and current sharing problem in islanded DC microgrid (MG) systems. The existing solutions to this problem are either centralized control or distributed control based approaches. For these methods, communication and information exchange is inevitable. In order to improve the system robustness and reduce the system implementation cost, a decentralized communication-free leaky integral control is proposed in this paper, which is able to realize the same control goals without any communication. The stability of overall system together with proposed decentralized controller is analysed. A test DC MG system is built in Matlab Simulink to validate the effectiveness of proposed control method.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115889970","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 : 2019-10-01DOI: 10.1109/IECON.2019.8927159
Jiayan Liu, Dennis Klein, Yang Zhou, C. Rehtanz
When performing transmission network analysis, the computational expense of underlying network calculations is a basic problem. For instance, sensitivity analysis in network planning will be inapplicable due to the large number of components, the hourly resolution of time steps and the complexity of N-1 calculations, if considering all data. Anyway, only the most critical network loadings are relevant for the outcome of analysis. For this reason, this paper proposes a method for selecting those time steps that cover the most critical network loadings. At first, the critical range of each line is been defined. Than the scope of critical data is reduced by K-means clustering. Finally a global searching method is adapted to find the most important data. In this way, subsequent network calculations can be applied with acceptable effort and still high accuracy. A case study on the real German transmission network is carried out to validate the method.
{"title":"A Method for Selecting Critical Transmission Grid Usage Cases","authors":"Jiayan Liu, Dennis Klein, Yang Zhou, C. Rehtanz","doi":"10.1109/IECON.2019.8927159","DOIUrl":"https://doi.org/10.1109/IECON.2019.8927159","url":null,"abstract":"When performing transmission network analysis, the computational expense of underlying network calculations is a basic problem. For instance, sensitivity analysis in network planning will be inapplicable due to the large number of components, the hourly resolution of time steps and the complexity of N-1 calculations, if considering all data. Anyway, only the most critical network loadings are relevant for the outcome of analysis. For this reason, this paper proposes a method for selecting those time steps that cover the most critical network loadings. At first, the critical range of each line is been defined. Than the scope of critical data is reduced by K-means clustering. Finally a global searching method is adapted to find the most important data. In this way, subsequent network calculations can be applied with acceptable effort and still high accuracy. A case study on the real German transmission network is carried out to validate the method.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115864176","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 : 2019-10-01DOI: 10.1109/IECON.2019.8927306
Margarita Norambuena, José R. Rodríguez, S. Kouro
This paper proposes a new topology with reduced switch count for a regenerative flying capacitor multilevel inverter. This paper also introduces a new control strategy, the use of Predictive Control. The resulting control scheme is extremely simple to understand and to implement. In addition, simulation results present a very good performance of the converter.
{"title":"Model Predictive Control of a regenerative Flying Capacitor Converter with reduced switch count","authors":"Margarita Norambuena, José R. Rodríguez, S. Kouro","doi":"10.1109/IECON.2019.8927306","DOIUrl":"https://doi.org/10.1109/IECON.2019.8927306","url":null,"abstract":"This paper proposes a new topology with reduced switch count for a regenerative flying capacitor multilevel inverter. This paper also introduces a new control strategy, the use of Predictive Control. The resulting control scheme is extremely simple to understand and to implement. In addition, simulation results present a very good performance of the converter.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132468508","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 : 2019-10-01DOI: 10.1109/IECON.2019.8927638
Xiaoxia Zhang, C. Delpha, D. Diallo
The nondestructive crack detection is an important issue in industrial engineering. However, the detection of incipient cracks that can cause non obvious changes in the conductive material impedance map is difficult. In our paper, we propose a new method based on wavelet and Jensen-Shannon divergence in the framework of Noisy Independent Component Analysis (NICA) to address this problem. The source signals with fault features are obtained by the application of the Independent Component Analysis regarding the noise. Then, the wavelet decomposition is considered as the denoising method to partially reduce the noise influence. The Jensen-Shannon divergence(JSD) which has been proved as an efficient incipient fault detection algorithm in previous works is used here for incipient crack detection. The detection performances of the proposed method is compared with the ones obtained with the Kullback-Leibler divergence often proposed in the literature.
{"title":"Nondestructive Incipient Crack Detection based on Wavelet and Jensen-Shannon Divergence in the NICA framework","authors":"Xiaoxia Zhang, C. Delpha, D. Diallo","doi":"10.1109/IECON.2019.8927638","DOIUrl":"https://doi.org/10.1109/IECON.2019.8927638","url":null,"abstract":"The nondestructive crack detection is an important issue in industrial engineering. However, the detection of incipient cracks that can cause non obvious changes in the conductive material impedance map is difficult. In our paper, we propose a new method based on wavelet and Jensen-Shannon divergence in the framework of Noisy Independent Component Analysis (NICA) to address this problem. The source signals with fault features are obtained by the application of the Independent Component Analysis regarding the noise. Then, the wavelet decomposition is considered as the denoising method to partially reduce the noise influence. The Jensen-Shannon divergence(JSD) which has been proved as an efficient incipient fault detection algorithm in previous works is used here for incipient crack detection. The detection performances of the proposed method is compared with the ones obtained with the Kullback-Leibler divergence often proposed in the literature.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130001906","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 : 2019-10-01DOI: 10.1109/IECON.2019.8927551
A. Hably, Rattena Tang, J. Dumon, A. Carriquiry
In this paper, RobotMe, a new educational robotic platform is presented. It is dedicated to drone position control using various control designs. Different material and software elements employed in the platform are detailed. Some improvement guidelines are also proposed.
{"title":"RobotMe: A drone platform for control education","authors":"A. Hably, Rattena Tang, J. Dumon, A. Carriquiry","doi":"10.1109/IECON.2019.8927551","DOIUrl":"https://doi.org/10.1109/IECON.2019.8927551","url":null,"abstract":"In this paper, RobotMe, a new educational robotic platform is presented. It is dedicated to drone position control using various control designs. Different material and software elements employed in the platform are detailed. Some improvement guidelines are also proposed.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134138791","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 : 2019-10-01DOI: 10.1109/IECON.2019.8927451
J. Rosario, C.R. Brito, Iván Endara, Javier Urquizo
This research analyses distribution transformers and a useful life extension impact through two proposals concerning a change in residential customers consumption behaviour: load management by displacement, or a reduction in consumption in 26,386 subscribers from the utility ‘Corporación Nacional de Electricidad (CNEL) Guayas-Los Rios', in Puntilla-Samborondón counties. This method allowed the evaluation of the annual equivalent acceleration ageing factor and loss of life percentage of the solid insulation in the existing loadability condition, as well as when applying load management proposals, and obtaining the accumulated number of faults and time, which is achieved over 100% of the useful life of the insulation. Finally, when evaluating the acceptance potential of proposals, an increase in the useful life can be achieved by modulating residential users' consumption behaviour.
{"title":"Load Management Design Methods by Displacement and Affectation in Ageing Level of Distribution Transformers","authors":"J. Rosario, C.R. Brito, Iván Endara, Javier Urquizo","doi":"10.1109/IECON.2019.8927451","DOIUrl":"https://doi.org/10.1109/IECON.2019.8927451","url":null,"abstract":"This research analyses distribution transformers and a useful life extension impact through two proposals concerning a change in residential customers consumption behaviour: load management by displacement, or a reduction in consumption in 26,386 subscribers from the utility ‘Corporación Nacional de Electricidad (CNEL) Guayas-Los Rios', in Puntilla-Samborondón counties. This method allowed the evaluation of the annual equivalent acceleration ageing factor and loss of life percentage of the solid insulation in the existing loadability condition, as well as when applying load management proposals, and obtaining the accumulated number of faults and time, which is achieved over 100% of the useful life of the insulation. Finally, when evaluating the acceptance potential of proposals, an increase in the useful life can be achieved by modulating residential users' consumption behaviour.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134231556","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 : 2019-10-01DOI: 10.1109/IECON.2019.8927124
K. V. Kkuni, Sujay Ghosh, Guangya Yang, C. Booth
Passivity property of input impedance of grid connected Voltage Source Converter (VSC) is a good measure for ensuring small signal stability of the power system composed of numerous interconnected dynamical system. It is well known that a pure passivity for a VSC is impossible to obtain, however, if the frequency range of the negative admittance from VSC terminal can be minimized, the possibility instability due to grid side impedance interacting with the VSC system can be reduced. For a VSC, there are two major design alternatives for the current controller;a decoupled dq current controller and αβ frame Proportional Resonant controller. This paper compares these two current controller alternatives for VSC, based on their passivity property. The small signal model of LCL filter equipped VSC with the two types of current controller is also derived. Some design recommendations using the considered current controllers, for reducing non-passive frequency range is also presented.
{"title":"Modelling and Passivity Analysis of VSC Output Impedance under SRF and αβ Control Frames","authors":"K. V. Kkuni, Sujay Ghosh, Guangya Yang, C. Booth","doi":"10.1109/IECON.2019.8927124","DOIUrl":"https://doi.org/10.1109/IECON.2019.8927124","url":null,"abstract":"Passivity property of input impedance of grid connected Voltage Source Converter (VSC) is a good measure for ensuring small signal stability of the power system composed of numerous interconnected dynamical system. It is well known that a pure passivity for a VSC is impossible to obtain, however, if the frequency range of the negative admittance from VSC terminal can be minimized, the possibility instability due to grid side impedance interacting with the VSC system can be reduced. For a VSC, there are two major design alternatives for the current controller;a decoupled dq current controller and αβ frame Proportional Resonant controller. This paper compares these two current controller alternatives for VSC, based on their passivity property. The small signal model of LCL filter equipped VSC with the two types of current controller is also derived. Some design recommendations using the considered current controllers, for reducing non-passive frequency range is also presented.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133889589","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 : 2019-10-01DOI: 10.1109/IECON.2019.8926710
Adla Ismail, L. Saidi, M. Sayadi, Mohamed Benbouzid
Power electronic converters such as inverters and rectifiers are crucial parts of renewable energy systems. Usually, the power converters are subjected to a high failure frequency rate and lead to power system shut down. In an effort to predict power insulated gate bipolar transistor (IGBTs) device aging, this paper proposes a remaining useful life estimation algorithm for degraded power IGBTs, which are exposed to high amplitude of thermal overstress, through the Gaussian Process regression technique. The benefits of the proposed prognostic method are also illustrated with real device accelerated aging database set under thermal overstress utilizing a DC at the gate.
{"title":"Gaussian Process Regression Remaining Useful Lifetime Prediction of Thermally Aged Power IGBT","authors":"Adla Ismail, L. Saidi, M. Sayadi, Mohamed Benbouzid","doi":"10.1109/IECON.2019.8926710","DOIUrl":"https://doi.org/10.1109/IECON.2019.8926710","url":null,"abstract":"Power electronic converters such as inverters and rectifiers are crucial parts of renewable energy systems. Usually, the power converters are subjected to a high failure frequency rate and lead to power system shut down. In an effort to predict power insulated gate bipolar transistor (IGBTs) device aging, this paper proposes a remaining useful life estimation algorithm for degraded power IGBTs, which are exposed to high amplitude of thermal overstress, through the Gaussian Process regression technique. The benefits of the proposed prognostic method are also illustrated with real device accelerated aging database set under thermal overstress utilizing a DC at the gate.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134054015","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 : 2019-10-01DOI: 10.1109/IECON.2019.8927648
E. Rokrok, T. Qoria, A. Bruyere, B. Francois, X. Guillaud
This paper investigates the effect of using phase-locked loop (PLL) on the performance of a grid-forming controlled converter. Usually, a grid-forming controlled converter operates without dedicated PLL. It is shown that in this case, the active power dominant dynamics are highly dependent to the grid short circuit ratio (SCR). In case of using PLL, the obtained results illustrate that the SCR has a negligible effect on the dynamic behavior of the system. Moreover, the power converter will not participate to the frequency regulation anymore; therefore, the converter response time can be adjusted independently to the choice of the droop control gain, which is not possible without PLL. A simple equivalent model is presented which gives a physical explanation of these features.
{"title":"Effect of Using PLL-Based Grid-Forming Control on Active Power Dynamics Under Various SCR","authors":"E. Rokrok, T. Qoria, A. Bruyere, B. Francois, X. Guillaud","doi":"10.1109/IECON.2019.8927648","DOIUrl":"https://doi.org/10.1109/IECON.2019.8927648","url":null,"abstract":"This paper investigates the effect of using phase-locked loop (PLL) on the performance of a grid-forming controlled converter. Usually, a grid-forming controlled converter operates without dedicated PLL. It is shown that in this case, the active power dominant dynamics are highly dependent to the grid short circuit ratio (SCR). In case of using PLL, the obtained results illustrate that the SCR has a negligible effect on the dynamic behavior of the system. Moreover, the power converter will not participate to the frequency regulation anymore; therefore, the converter response time can be adjusted independently to the choice of the droop control gain, which is not possible without PLL. A simple equivalent model is presented which gives a physical explanation of these features.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131523862","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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