Pub Date : 2019-02-01DOI: 10.1109/ICIT.2019.8755161
André Mendes, Bruno Baptista, M. Perdigão, A. Mendes
This paper presents an analysis for the experimental set up of a double toroid variable inductor (VI) that is fed by a DC-DC converter. The main objective is to analyze the behaviour of the VI for different power levels, in particular the influence of the control circuit to regulate the inductance of the main winding. By observing the waveform of the main current winding, it is possible to demonstrate the ability to increase or decrease the inductance value. A variable inductor is typically used from linear to saturated state and presents an inversely proportional inductance as a function of the main winding current. By employing this current-controlled double toroid VI it is possible to have both an inductance increase and inductance decrease as a function of the control current by regulating the reluctance of the magnetic cores.
{"title":"Experimental analysis of a DC current-controlled variable inductor in a DC-DC converter","authors":"André Mendes, Bruno Baptista, M. Perdigão, A. Mendes","doi":"10.1109/ICIT.2019.8755161","DOIUrl":"https://doi.org/10.1109/ICIT.2019.8755161","url":null,"abstract":"This paper presents an analysis for the experimental set up of a double toroid variable inductor (VI) that is fed by a DC-DC converter. The main objective is to analyze the behaviour of the VI for different power levels, in particular the influence of the control circuit to regulate the inductance of the main winding. By observing the waveform of the main current winding, it is possible to demonstrate the ability to increase or decrease the inductance value. A variable inductor is typically used from linear to saturated state and presents an inversely proportional inductance as a function of the main winding current. By employing this current-controlled double toroid VI it is possible to have both an inductance increase and inductance decrease as a function of the control current by regulating the reluctance of the magnetic cores.","PeriodicalId":6701,"journal":{"name":"2019 IEEE International Conference on Industrial Technology (ICIT)","volume":"14 1","pages":"440-445"},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75668189","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 : 2019-02-01DOI: 10.1109/ICIT.2019.8755014
A. Pakonen, I. Buzhinsky
Model checking has been successfully used for detailed formal verification of instrumentation and control (I&C) systems, as long as the focus has been on the application logic, alone. In safety-critical applications, fault tolerance is also an important aspect, but introducing I&C hardware failure modes to the formal models comes at a significant computational cost. Previous attempts have led to state space explosion, and prohibitively long processing times. In this paper, we present a method for adding hardware component failures and communication delays into I&C application logic models for the NuSMV symbolic model checker. Based on a case study built around a semi-fictitious, four-redundant nuclear power plant protection system, we demonstrate how even detailed system designs can be verified, if the focus is kept on single failure tolerance.
{"title":"Verification of fault tolerant safety I&C systems using model checking","authors":"A. Pakonen, I. Buzhinsky","doi":"10.1109/ICIT.2019.8755014","DOIUrl":"https://doi.org/10.1109/ICIT.2019.8755014","url":null,"abstract":"Model checking has been successfully used for detailed formal verification of instrumentation and control (I&C) systems, as long as the focus has been on the application logic, alone. In safety-critical applications, fault tolerance is also an important aspect, but introducing I&C hardware failure modes to the formal models comes at a significant computational cost. Previous attempts have led to state space explosion, and prohibitively long processing times. In this paper, we present a method for adding hardware component failures and communication delays into I&C application logic models for the NuSMV symbolic model checker. Based on a case study built around a semi-fictitious, four-redundant nuclear power plant protection system, we demonstrate how even detailed system designs can be verified, if the focus is kept on single failure tolerance.","PeriodicalId":6701,"journal":{"name":"2019 IEEE International Conference on Industrial Technology (ICIT)","volume":"4 1","pages":"969-974"},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75316167","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 : 2019-02-01DOI: 10.1109/ICIT.2019.8755088
M. Hosseinzadeh, M. Sarbanzadeh, M. Rivera, J. Muñoz, Ariel Villalón, C. Muñoz
Multilevel inverters are used in high-power medium-voltage applications, due to lower harmonics and the lower standing voltage on the power switches than conventional two and three multilevel inverters. The main drawback of multilevel inverters is, requires a high number of switching devices leads to complex their control. This paper introduces an asymmetric switch-diode multilevel inverter for cascaded multilevel inverters. The suggested asymmetric multilevel inverter generates thirty-one-levels with the reduced number of power switches and DC power supplies as well as reduced the maximum total blocking voltage on the switches. A comprehensive study among the suggested topology and other cascaded multilevel inverters are discussed to show the advantages and disadvantages of multilevel inverters. The performance of a single-phase cascaded connection consists of the two suggested multilevel inverter is evaluated in Matlab/Simulink software.
{"title":"New Single-Phase Asymmetric Reduced Multilevel Inverter Based on Switched-Diode for Cascaded Multilevel Inverters","authors":"M. Hosseinzadeh, M. Sarbanzadeh, M. Rivera, J. Muñoz, Ariel Villalón, C. Muñoz","doi":"10.1109/ICIT.2019.8755088","DOIUrl":"https://doi.org/10.1109/ICIT.2019.8755088","url":null,"abstract":"Multilevel inverters are used in high-power medium-voltage applications, due to lower harmonics and the lower standing voltage on the power switches than conventional two and three multilevel inverters. The main drawback of multilevel inverters is, requires a high number of switching devices leads to complex their control. This paper introduces an asymmetric switch-diode multilevel inverter for cascaded multilevel inverters. The suggested asymmetric multilevel inverter generates thirty-one-levels with the reduced number of power switches and DC power supplies as well as reduced the maximum total blocking voltage on the switches. A comprehensive study among the suggested topology and other cascaded multilevel inverters are discussed to show the advantages and disadvantages of multilevel inverters. The performance of a single-phase cascaded connection consists of the two suggested multilevel inverter is evaluated in Matlab/Simulink software.","PeriodicalId":6701,"journal":{"name":"2019 IEEE International Conference on Industrial Technology (ICIT)","volume":"15 1","pages":"1494-1499"},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73682274","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 : 2019-02-01DOI: 10.1109/ICIT.2019.8755160
M. Hosseinzadeh, M. Sarbanzadeh, A. Salehi, M. Rivera, J. Muñoz, P. Wheeler
Cascaded H-bridge multilevel converter (CHB) is a promising topology for grid-connection systems. On the other side, model predictive controls are advanced control strategies which have many advantages for power converters applications like as fast dynamic response and easy implementation. This paper proposes a model predictive current control for a single-phase cascaded H-bridge converter topology in two modes: symmetrical and asymmetrical in the grid-connection state. The performance principle of an H-bridge converter and its cascaded connection are analyzed. Then, the mathematical model and predictive current control are explained in a grid-connected condition. The performance of the CHB topologies with the proposed predictive current control technique is evaluated by the simulation results in different conditions.
{"title":"Performance Evaluation of Cascaded H-bridge Multilevel Grid-Connected Converter with Model Predictive Control Technique","authors":"M. Hosseinzadeh, M. Sarbanzadeh, A. Salehi, M. Rivera, J. Muñoz, P. Wheeler","doi":"10.1109/ICIT.2019.8755160","DOIUrl":"https://doi.org/10.1109/ICIT.2019.8755160","url":null,"abstract":"Cascaded H-bridge multilevel converter (CHB) is a promising topology for grid-connection systems. On the other side, model predictive controls are advanced control strategies which have many advantages for power converters applications like as fast dynamic response and easy implementation. This paper proposes a model predictive current control for a single-phase cascaded H-bridge converter topology in two modes: symmetrical and asymmetrical in the grid-connection state. The performance principle of an H-bridge converter and its cascaded connection are analyzed. Then, the mathematical model and predictive current control are explained in a grid-connected condition. The performance of the CHB topologies with the proposed predictive current control technique is evaluated by the simulation results in different conditions.","PeriodicalId":6701,"journal":{"name":"2019 IEEE International Conference on Industrial Technology (ICIT)","volume":"21 1","pages":"1806-1811"},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79976296","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 : 2019-02-01DOI: 10.1109/ICIT.2019.8755146
S. Haller, Peng Cheng, B. Oelmann
A high copper fill factor allows reducing the resistive losses responsible for more than 50 % of the losses in today’s most commonly used electrical motors. Single-turn windings achieve a copper fill factor close to one. Furthermore, they do not suffer from turn to turn faults and provide a low thermal resistance between winding and stator. The reduced EMF of single-turn winding configurations promotes the use of extra-low voltage high current MOSFETs. Rapid development of these MOSFETs allows reversing common design principles to explore new applications, such as battery electric traction drives. This paper presents a 2.5 V 1 kW MOSFET driven 13-phase permanent magnet DC motor with a single-turn winding configuration. The motor prototype with a copper fill factor of 0.84 was tested with continuous drive currents up to 600 A. The measured torque-efficiency map shows that such a high-current concept with voltages below 60 V is feasible using today’s extremely low-voltage high current semiconductors. Due to the rapid development of such switches, there is great potential in this concept for further improvements. This work presents a small-scale version of the high-current drive, which is part of the development of an extra-low voltage traction drive concept.
高铜填充系数可以降低电阻损耗，在当今最常用的电动机中，电阻损耗占50%以上。单匝绕组的铜填充系数接近于1。此外，它们不会遭受匝间故障，并在绕组和定子之间提供低热阻。单匝绕组配置的降低EMF促进了特低电压大电流mosfet的使用。这些mosfet的快速发展允许逆转常见的设计原则，以探索新的应用，如电池电力牵引驱动。本文介绍了一种2.5 V 1 kW的MOSFET驱动的13相永磁直流电机，该电机具有单匝绕组结构。铜填充系数为0.84的电机原型在高达600 a的连续驱动电流下进行了测试。测量的转矩效率图显示，使用当今的极低电压高电流半导体，电压低于60 V的大电流概念是可行的。由于这种开关的快速发展，这一概念有很大的潜力可以进一步改进。这项工作提出了一个小型版本的大电流驱动，这是特低压牵引驱动概念发展的一部分。
{"title":"A 2.5 V 600 A MOSFET-Based DC Traction Motor","authors":"S. Haller, Peng Cheng, B. Oelmann","doi":"10.1109/ICIT.2019.8755146","DOIUrl":"https://doi.org/10.1109/ICIT.2019.8755146","url":null,"abstract":"A high copper fill factor allows reducing the resistive losses responsible for more than 50 % of the losses in today’s most commonly used electrical motors. Single-turn windings achieve a copper fill factor close to one. Furthermore, they do not suffer from turn to turn faults and provide a low thermal resistance between winding and stator. The reduced EMF of single-turn winding configurations promotes the use of extra-low voltage high current MOSFETs. Rapid development of these MOSFETs allows reversing common design principles to explore new applications, such as battery electric traction drives. This paper presents a 2.5 V 1 kW MOSFET driven 13-phase permanent magnet DC motor with a single-turn winding configuration. The motor prototype with a copper fill factor of 0.84 was tested with continuous drive currents up to 600 A. The measured torque-efficiency map shows that such a high-current concept with voltages below 60 V is feasible using today’s extremely low-voltage high current semiconductors. Due to the rapid development of such switches, there is great potential in this concept for further improvements. This work presents a small-scale version of the high-current drive, which is part of the development of an extra-low voltage traction drive concept.","PeriodicalId":6701,"journal":{"name":"2019 IEEE International Conference on Industrial Technology (ICIT)","volume":"19 1","pages":"213-218"},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79043590","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 : 2019-02-01DOI: 10.1109/ICIT.2019.8755091
S. Woo, Chulhee Lee
The convolutional neural network (CNN) is a promising algorithm for artificial intelligence. Although it was developed for image classification, much research is currently in progress in various fields, such as object detection and image processing. The basic principle of the CNN, especially for classification, is to adopt a loss function and minimize it in an iterative way. In this paper, a multigradient-based training algorithm is proposed for image classification. The proposed algorithm defines an object function based on multigradients and trains the CNN by maximizing the corresponding objective function. When applied to open access databases, the proposed algorithm performed better than conventional back-propagation based CNN methods.
{"title":"Multigradient-based Convolutional Neural Network","authors":"S. Woo, Chulhee Lee","doi":"10.1109/ICIT.2019.8755091","DOIUrl":"https://doi.org/10.1109/ICIT.2019.8755091","url":null,"abstract":"The convolutional neural network (CNN) is a promising algorithm for artificial intelligence. Although it was developed for image classification, much research is currently in progress in various fields, such as object detection and image processing. The basic principle of the CNN, especially for classification, is to adopt a loss function and minimize it in an iterative way. In this paper, a multigradient-based training algorithm is proposed for image classification. The proposed algorithm defines an object function based on multigradients and trains the CNN by maximizing the corresponding objective function. When applied to open access databases, the proposed algorithm performed better than conventional back-propagation based CNN methods.","PeriodicalId":6701,"journal":{"name":"2019 IEEE International Conference on Industrial Technology (ICIT)","volume":"8 1","pages":"883-886"},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81870638","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 : 2019-02-01DOI: 10.1109/ICIT.2019.8755120
Charbel Zaghrini, G. Khoury, M. Fadel, R. Ghosn, F. Khatounian
In this paper, a sensorless control for permanent magnet synchronous motors is presented. It is based on the reconstruction of the rotor speed and position using the traditional back-electromotive force (emf) method with the addition of an innovative speed observation. The observer parameters are computed according to the speed through an appropriate adaptation law that allows real time gain calculations Furthermore, the speed is calculated from the back-emf observer which induces a velocity offset due to the observation errors inherent to the emfs sinusoidal forms. To overcome this drawback, the use of the position derivative is proposed taking discontinuities into account. Simulation and experimental results validate the proposed method.
{"title":"Adapted Back-EMF Sensorless Control for Permanent Magnet Synchronous Motors","authors":"Charbel Zaghrini, G. Khoury, M. Fadel, R. Ghosn, F. Khatounian","doi":"10.1109/ICIT.2019.8755120","DOIUrl":"https://doi.org/10.1109/ICIT.2019.8755120","url":null,"abstract":"In this paper, a sensorless control for permanent magnet synchronous motors is presented. It is based on the reconstruction of the rotor speed and position using the traditional back-electromotive force (emf) method with the addition of an innovative speed observation. The observer parameters are computed according to the speed through an appropriate adaptation law that allows real time gain calculations Furthermore, the speed is calculated from the back-emf observer which induces a velocity offset due to the observation errors inherent to the emfs sinusoidal forms. To overcome this drawback, the use of the position derivative is proposed taking discontinuities into account. Simulation and experimental results validate the proposed method.","PeriodicalId":6701,"journal":{"name":"2019 IEEE International Conference on Industrial Technology (ICIT)","volume":"395 1","pages":"219-224"},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85016346","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 : 2019-02-01DOI: 10.1109/ICIT.2019.8755005
Attiq Ur-Rehman, I. Gondal, J. Kamruzzaman, A. Jolfaei
Common vulnerability scoring system (CVSS) is an industry standard that can assess the vulnerability of nodes in traditional computer systems. The metrics computed by CVSS would determine critical nodes and attack paths. However, traditional IT security models would not fit IoT embedded networks due to distinct nature and unique characteristics of IoT systems. This paper analyses the application of CVSS for IoT embedded systems and proposes an improved vulnerability scoring system based on CVSS v3 framework. The proposed framework, named CVSSIoT, is applied to a realistic IT supply chain system and the results are compared with the actual vulnerabilities from the national vulnerability database. The comparison result validates the proposed model. CVSSIoT is not only effective, simple and capable of vulnerability evaluation for traditional IT system, but also exploits unique characteristics of IoT devices.
{"title":"Vulnerability Modelling for Hybrid IT Systems","authors":"Attiq Ur-Rehman, I. Gondal, J. Kamruzzaman, A. Jolfaei","doi":"10.1109/ICIT.2019.8755005","DOIUrl":"https://doi.org/10.1109/ICIT.2019.8755005","url":null,"abstract":"Common vulnerability scoring system (CVSS) is an industry standard that can assess the vulnerability of nodes in traditional computer systems. The metrics computed by CVSS would determine critical nodes and attack paths. However, traditional IT security models would not fit IoT embedded networks due to distinct nature and unique characteristics of IoT systems. This paper analyses the application of CVSS for IoT embedded systems and proposes an improved vulnerability scoring system based on CVSS v3 framework. The proposed framework, named CVSSIoT, is applied to a realistic IT supply chain system and the results are compared with the actual vulnerabilities from the national vulnerability database. The comparison result validates the proposed model. CVSSIoT is not only effective, simple and capable of vulnerability evaluation for traditional IT system, but also exploits unique characteristics of IoT devices.","PeriodicalId":6701,"journal":{"name":"2019 IEEE International Conference on Industrial Technology (ICIT)","volume":"80 1","pages":"1186-1191"},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85568510","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 : 2019-02-01DOI: 10.1109/ICIT.2019.8755225
H. Woo, Dong-Hee Lee
This paper presents a hybrid generator with a PM(Permanent Magnet) exciter to improve the operating efficiency, dynamic response and emergency starting characteristic. The proposed hybrid generator is designed by the parallel combination of the winding field and the PM field. In the proposed hybrid generator, the PM assistant field can be added to the conventional winding rotor to improve the total efficiency without the complex optimized design. The assistant PM field can supply the enough linkage flux to produce the no-load generation voltage and the starting power for the controller. The controlled field current of the winding part, is used to produce insufficient flux to keep the constant output voltage from the load variation of the generator.Furthermore, the direct field current control scheme using the PM exciter can improve the dynamic performance compare than the indirect field current control structure of the conventional excitation system. In the designed 10kW prototype hybrid generator with PM exciter is tested and compared with the conventional generator, hybrid generator with the winding exciter.
{"title":"Starting and Dynamic Performance of A Parallel Field Rotor Type Hybrid Generator with PM Exciter","authors":"H. Woo, Dong-Hee Lee","doi":"10.1109/ICIT.2019.8755225","DOIUrl":"https://doi.org/10.1109/ICIT.2019.8755225","url":null,"abstract":"This paper presents a hybrid generator with a PM(Permanent Magnet) exciter to improve the operating efficiency, dynamic response and emergency starting characteristic. The proposed hybrid generator is designed by the parallel combination of the winding field and the PM field. In the proposed hybrid generator, the PM assistant field can be added to the conventional winding rotor to improve the total efficiency without the complex optimized design. The assistant PM field can supply the enough linkage flux to produce the no-load generation voltage and the starting power for the controller. The controlled field current of the winding part, is used to produce insufficient flux to keep the constant output voltage from the load variation of the generator.Furthermore, the direct field current control scheme using the PM exciter can improve the dynamic performance compare than the indirect field current control structure of the conventional excitation system. In the designed 10kW prototype hybrid generator with PM exciter is tested and compared with the conventional generator, hybrid generator with the winding exciter.","PeriodicalId":6701,"journal":{"name":"2019 IEEE International Conference on Industrial Technology (ICIT)","volume":"15 1","pages":"317-322"},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80834980","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 : 2019-02-01DOI: 10.1109/ICIT.2019.8755055
M. Meraj, S. Rahman, A. Iqbal, L. Ben‐Brahim, R. Alammari, H. Abu-Rub
Impedance source inverters (Z-source and Quazi-Z-source (QZS)) are the promising converter topologies in the future generation because of the buck, boost and buck-boost modes of operation. In this paper, three phase voltage sensorless grid connected QZS inverter is proposed to inject Maximum Direct Power. The new system uses the Virtual Flux Oriented Control (VFOC) algorithm for current control and virtual Flux (VF) estimation method for grid voltage. The complete Virtual Flux direct Power control (VFOC-DPC) exemplify the performance and operation of the proposed system compared to the conventional DPC algorithm is presented. Proposed strategy is also investigated under predistorted and unbalance grid conditions. VFOC-DPC provides numerous benefits mainly providing balanced sinusoidal line currents when the supply voltage is unbalanced. Simulation results are presented under unbalanced and pre-existing harmonic content in the grid voltage to verify the VF estimation of grid voltage. Tracking of active- reactive power is accurately done with current control loops providing good steady state and transient response to step change in reference.
{"title":"Virtual Flux Oriented Sensorless Direct Power Control of QZS Inverter Connected to Grid for Solar PV Applications","authors":"M. Meraj, S. Rahman, A. Iqbal, L. Ben‐Brahim, R. Alammari, H. Abu-Rub","doi":"10.1109/ICIT.2019.8755055","DOIUrl":"https://doi.org/10.1109/ICIT.2019.8755055","url":null,"abstract":"Impedance source inverters (Z-source and Quazi-Z-source (QZS)) are the promising converter topologies in the future generation because of the buck, boost and buck-boost modes of operation. In this paper, three phase voltage sensorless grid connected QZS inverter is proposed to inject Maximum Direct Power. The new system uses the Virtual Flux Oriented Control (VFOC) algorithm for current control and virtual Flux (VF) estimation method for grid voltage. The complete Virtual Flux direct Power control (VFOC-DPC) exemplify the performance and operation of the proposed system compared to the conventional DPC algorithm is presented. Proposed strategy is also investigated under predistorted and unbalance grid conditions. VFOC-DPC provides numerous benefits mainly providing balanced sinusoidal line currents when the supply voltage is unbalanced. Simulation results are presented under unbalanced and pre-existing harmonic content in the grid voltage to verify the VF estimation of grid voltage. Tracking of active- reactive power is accurately done with current control loops providing good steady state and transient response to step change in reference.","PeriodicalId":6701,"journal":{"name":"2019 IEEE International Conference on Industrial Technology (ICIT)","volume":"9 1","pages":"1417-1422"},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78279695","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：