Pub Date : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980716
A. Almaktoof, A. Raji, M. Kahn
This paper presents a finite control set model predictive strategy for a three-phase, three-level Neutral-Point-Clamped (NPC) inverters with resistive-inductive load (RL-Load). This strategy allows for fast load current control while keeping the balance of the DC-link capacitor voltages. The system performance with a prediction horizon of one sample time and the dynamic response of the system with step change in the amplitude of the reference are investigated. The output currents and DC-link capacitor voltages are sampled and predicted for the next sampling time for each valid switching state of the inverter. The error between the predicted and reference current values and also the error between the capacitor voltages with respect to the reference value are obtained to minimize the cost function by choosing the appropriate state's switching signals and then applied to the converter. The simulation is carried out using MATLAB/Simulink with PSIM software. The co-simulation results show that the proposed control achieves high performance and high degree of robustness while balancing the DC-link capacitor voltages.
{"title":"Finite-set model predictive control and DC-link capacitor voltages balancing for three-level NPC inverters","authors":"A. Almaktoof, A. Raji, M. Kahn","doi":"10.1109/EPEPEMC.2014.6980716","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980716","url":null,"abstract":"This paper presents a finite control set model predictive strategy for a three-phase, three-level Neutral-Point-Clamped (NPC) inverters with resistive-inductive load (RL-Load). This strategy allows for fast load current control while keeping the balance of the DC-link capacitor voltages. The system performance with a prediction horizon of one sample time and the dynamic response of the system with step change in the amplitude of the reference are investigated. The output currents and DC-link capacitor voltages are sampled and predicted for the next sampling time for each valid switching state of the inverter. The error between the predicted and reference current values and also the error between the capacitor voltages with respect to the reference value are obtained to minimize the cost function by choosing the appropriate state's switching signals and then applied to the converter. The simulation is carried out using MATLAB/Simulink with PSIM software. The co-simulation results show that the proposed control achieves high performance and high degree of robustness while balancing the DC-link capacitor voltages.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123798871","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980556
Krzysztof Drozdz, Dariusz Janiszewski, K. Szabat
The the article the issues associated with the use of fuzzy logic in a non-linear Kalman filter working in adaptive control structure of the dual mass system are presented. In the introduction, a brief review of the literature is done. Then the mathematical model of the drive system is shown. Next, the control structure and the fuzzy extended Kalman filter is presented. The adaptation of the coefficients of the covariance matrix of the Kalman filter with the help of the fuzzy system is described. Estimator is tested in an open and closed control structure. Compared to the classic solutions, a significant improvement in the quality of the state variable estimation of the drive system is obtained.
{"title":"Application of fuzzy Kalman filter in adaptive control structure of two-mass system","authors":"Krzysztof Drozdz, Dariusz Janiszewski, K. Szabat","doi":"10.1109/EPEPEMC.2014.6980556","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980556","url":null,"abstract":"The the article the issues associated with the use of fuzzy logic in a non-linear Kalman filter working in adaptive control structure of the dual mass system are presented. In the introduction, a brief review of the literature is done. Then the mathematical model of the drive system is shown. Next, the control structure and the fuzzy extended Kalman filter is presented. The adaptation of the coefficients of the covariance matrix of the Kalman filter with the help of the fuzzy system is described. Estimator is tested in an open and closed control structure. Compared to the classic solutions, a significant improvement in the quality of the state variable estimation of the drive system is obtained.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130318168","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980604
K. Szabat, T. Orłowska-Kowalska, M. Kaminski, P. Serkies, S. Ryvkin
In the paper a novel fuzzy sliding mode control structure is proposed. The main controller is a TSK controller whose control surface is divided into local models. In the local models located further from the equilibrium point the control lows have the form of classical sliding mode controller. The sector specified as an origin is described as a function of classical PI controller. Due to the special location of the membership function a soft switching between sectors is guaranteed. The theoretical considerations are confirmed by a simulation and experimental study.
{"title":"Control of the uncertain drive system using a sliding mode fuzzy TSK controller","authors":"K. Szabat, T. Orłowska-Kowalska, M. Kaminski, P. Serkies, S. Ryvkin","doi":"10.1109/EPEPEMC.2014.6980604","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980604","url":null,"abstract":"In the paper a novel fuzzy sliding mode control structure is proposed. The main controller is a TSK controller whose control surface is divided into local models. In the local models located further from the equilibrium point the control lows have the form of classical sliding mode controller. The sector specified as an origin is described as a function of classical PI controller. Due to the special location of the membership function a soft switching between sectors is guaranteed. The theoretical considerations are confirmed by a simulation and experimental study.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129664829","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980696
A. D. Di Tommaso, F. Genduso, R. Miceli
In this paper the Authors present a highly modular and platform-independent software, being based on the MATLAB® programming environment, which is proposed as a valuable aid in the design and analysis of the windings of rotating electrical machines. Unlike the major part of the commercial software, the cases of both symmetric and asymmetric (unbalanced) windings with any number of phases are here considered. The software can perform a considerable amount of calculations in order to determine automatically the optimal structure of the winding starting from its specifications. It is also able to draw the winding map and gives the results of calculation for the harmonic winding factors. The realized software allow the designer to reduce the harmonics winding coefficient with the only drawback of a small reduction of the fundamental coefficient, both for e.m.f. and m.m.f.
{"title":"A platform-independent software for the design and analysis of windings of rotating electrical machines","authors":"A. D. Di Tommaso, F. Genduso, R. Miceli","doi":"10.1109/EPEPEMC.2014.6980696","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980696","url":null,"abstract":"In this paper the Authors present a highly modular and platform-independent software, being based on the MATLAB® programming environment, which is proposed as a valuable aid in the design and analysis of the windings of rotating electrical machines. Unlike the major part of the commercial software, the cases of both symmetric and asymmetric (unbalanced) windings with any number of phases are here considered. The software can perform a considerable amount of calculations in order to determine automatically the optimal structure of the winding starting from its specifications. It is also able to draw the winding map and gives the results of calculation for the harmonic winding factors. The realized software allow the designer to reduce the harmonics winding coefficient with the only drawback of a small reduction of the fundamental coefficient, both for e.m.f. and m.m.f.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121188172","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980620
M. S. Camara, M. B. Camara, B. Dakyo, H. Gualous
This paper describes the modeling and control of Permanent Magnet Synchronous Generator (PMSG) of 5MW for wind farms applications. The generators are linked to the grid by means of a fully controlled frequency converter, which consists of two three phase rectifiers, an intermediate DC-bus, and an inverter. The full system is connected to AC grid with phase to phase RMS voltage of 20kV. Proposed control strategies include the Maximum Power Point Tracking (MPPT) for the PMSG speed control, the active/reactive power control, and the DC-bus voltage management. To show the performances of the control strategies, some simulation results are presented and analyzed using Matlab/Simulink software.
{"title":"Permanent Magnet Synchronous Generators for offshore wind energy system linked to grid-modeling and control strategies","authors":"M. S. Camara, M. B. Camara, B. Dakyo, H. Gualous","doi":"10.1109/EPEPEMC.2014.6980620","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980620","url":null,"abstract":"This paper describes the modeling and control of Permanent Magnet Synchronous Generator (PMSG) of 5MW for wind farms applications. The generators are linked to the grid by means of a fully controlled frequency converter, which consists of two three phase rectifiers, an intermediate DC-bus, and an inverter. The full system is connected to AC grid with phase to phase RMS voltage of 20kV. Proposed control strategies include the Maximum Power Point Tracking (MPPT) for the PMSG speed control, the active/reactive power control, and the DC-bus voltage management. To show the performances of the control strategies, some simulation results are presented and analyzed using Matlab/Simulink software.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"402 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124304920","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980509
H. Tohidi, K. Erenturk
This paper investigates a robust adaptive state feedback control scheme to solve the robust fault-tolerant control (FTC) problem for a three phase induction motor (TPIM) with loss of actuator effectiveness and external disturbances. Using Lyapunov stability theory, a constructive algorithm based on linear matrix inequalities (LMIs) is developed for on-line tuning of adaptive and fixed state-feedback gains to stabilize the closed-loop system and compensate actuator faults with disturbance attenuation. Simulation results reveal the merits of proposed robust adaptive FTC scheme on an induction motor subjected to actuator faults.
{"title":"Robust adaptive fault tolerant controller design, applied to three phase induction motor","authors":"H. Tohidi, K. Erenturk","doi":"10.1109/EPEPEMC.2014.6980509","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980509","url":null,"abstract":"This paper investigates a robust adaptive state feedback control scheme to solve the robust fault-tolerant control (FTC) problem for a three phase induction motor (TPIM) with loss of actuator effectiveness and external disturbances. Using Lyapunov stability theory, a constructive algorithm based on linear matrix inequalities (LMIs) is developed for on-line tuning of adaptive and fixed state-feedback gains to stabilize the closed-loop system and compensate actuator faults with disturbance attenuation. Simulation results reveal the merits of proposed robust adaptive FTC scheme on an induction motor subjected to actuator faults.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122697588","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980643
P. Sobanski, T. Orłowska-Kowalska
This paper presents a designing and an analysis of a space vector modulation (SVM) algorithm in a fault-tolerant induction motor drive system based on a redundant voltage inverter topology. First, an influence of open-switch failures on inverter voltages modulation is considered. Furthermore, limitations of the post-fault SVM method are specified. To validate the analyzed algorithm, a simulation model of the drive was designed in the Matlab/Simulink.
{"title":"Analysis of space vector modulation technique in inverter-fed fault-tolerant induction motor drive","authors":"P. Sobanski, T. Orłowska-Kowalska","doi":"10.1109/EPEPEMC.2014.6980643","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980643","url":null,"abstract":"This paper presents a designing and an analysis of a space vector modulation (SVM) algorithm in a fault-tolerant induction motor drive system based on a redundant voltage inverter topology. First, an influence of open-switch failures on inverter voltages modulation is considered. Furthermore, limitations of the post-fault SVM method are specified. To validate the analyzed algorithm, a simulation model of the drive was designed in the Matlab/Simulink.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123285514","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980503
Chaiwut Choorak, V. Kinnares
This paper presents a speed control method of an asymmetrical two-phase induction machine driven by a three-leg voltage source inverter. A modulation strategy is based on carrier-based space vector pulse width modulation providing unbalanced phase voltages. Slip regulation control is used for keeping the rotor speed constant as speed required in conjunction with scalar V/f control. The simulation results illustrate the performance of machines for both motoring and generating modes. It is found that the unbalanced voltage case for auxiliary and main windings offers the better machine performance over the balanced voltage case in terms of torque ripple in a motoring mode and power transfer in a generating mode.
{"title":"Speed control of asymmetrical two-phase induction machine using three-leg space vector PWM voltage source inverter","authors":"Chaiwut Choorak, V. Kinnares","doi":"10.1109/EPEPEMC.2014.6980503","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980503","url":null,"abstract":"This paper presents a speed control method of an asymmetrical two-phase induction machine driven by a three-leg voltage source inverter. A modulation strategy is based on carrier-based space vector pulse width modulation providing unbalanced phase voltages. Slip regulation control is used for keeping the rotor speed constant as speed required in conjunction with scalar V/f control. The simulation results illustrate the performance of machines for both motoring and generating modes. It is found that the unbalanced voltage case for auxiliary and main windings offers the better machine performance over the balanced voltage case in terms of torque ripple in a motoring mode and power transfer in a generating mode.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130765641","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980714
S. V. Khuktikov, V. Meleshin, A. A. Tochenov
For more than 20 years modern developments of auxiliary power converters (APC) for railway applications have focused on demands for low dimensions and mass, higher efficiency and simplified maintenance. Currently under an increasing number of electronic loads, requiring high-quality electric energy and under the ever increasing running distances of locomotives a requirement of high reliability becomes priority. The APC with a new structure for locomotives (PΣ = 16kW) will be considered in the paper; the structure ensures a heightened reliability of the APC, a minimum number of incorporating blocks. A tough regulation on the load and a properly organized charge of an alkaline board battery can go on even if some blocks fail. Modeling and experiments verify this theoretical analysis.
{"title":"A novel auxiliary power converter for railway application","authors":"S. V. Khuktikov, V. Meleshin, A. A. Tochenov","doi":"10.1109/EPEPEMC.2014.6980714","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980714","url":null,"abstract":"For more than 20 years modern developments of auxiliary power converters (APC) for railway applications have focused on demands for low dimensions and mass, higher efficiency and simplified maintenance. Currently under an increasing number of electronic loads, requiring high-quality electric energy and under the ever increasing running distances of locomotives a requirement of high reliability becomes priority. The APC with a new structure for locomotives (PΣ = 16kW) will be considered in the paper; the structure ensures a heightened reliability of the APC, a minimum number of incorporating blocks. A tough regulation on the load and a properly organized charge of an alkaline board battery can go on even if some blocks fail. Modeling and experiments verify this theoretical analysis.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131276539","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980654
U. Nasir, Minxiao Han, Farukh Abbas, Akif Nadeem, Danish Khan
This Paper discusses the Simulink Models of open and closed loop systems of a three phase controlled rectifier and its study in terms of variation of load. The relationship between the source inductance, firing angle and commutation angle is important as these entities directly affect the Total Harmonic Distortion (THD) of the power system and this paper uses a graphical method to develop a relationship between source inductance, firing angle and commutation angle. This paper also discusses some trade-offs of using a Proportional - Integral (PI) controller in the design of closed loop system of the rectifier circuit and the effects of using active filters to reduce the Harmonic Components of the source current that may lead to commutation failure in the three phase controlled rectifier circuit.
{"title":"Effects of open and closed loop system of a six-pulse three phase controlled rectifier on variation in load, firing angle and source inductances","authors":"U. Nasir, Minxiao Han, Farukh Abbas, Akif Nadeem, Danish Khan","doi":"10.1109/EPEPEMC.2014.6980654","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980654","url":null,"abstract":"This Paper discusses the Simulink Models of open and closed loop systems of a three phase controlled rectifier and its study in terms of variation of load. The relationship between the source inductance, firing angle and commutation angle is important as these entities directly affect the Total Harmonic Distortion (THD) of the power system and this paper uses a graphical method to develop a relationship between source inductance, firing angle and commutation angle. This paper also discusses some trade-offs of using a Proportional - Integral (PI) controller in the design of closed loop system of the rectifier circuit and the effects of using active filters to reduce the Harmonic Components of the source current that may lead to commutation failure in the three phase controlled rectifier circuit.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130678289","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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