Pub Date : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065386
Marcos Paulo Brito Gomes, Marina Hassen de Souza, G. V. Ramos, A. Luiz, M. M. Stopa
This paper presents a study related to an electric drive composed by an induction machine fed by a NPC (neutral point clamped) frequency inverter, extending also to ANPC (active neutral point clamped) topologies, and IGBTs commanded by a SHE-PWM (selective harmonic elimination pulse width modulation) logic pattern. This work also addresses a concern related to the number of dv/dts reproduced in a fundamental period of a waveform, which is related to the semiconductors switching frequency. These dv/dts cause degradations to electric motors and its mitigation contributes minimizing problems on windings, insulations and bearings erosion. A SHE-PWM pattern with very low switching frequency is presented with simulations and experimental results mitigating the 5th and 7th harmonics for the entire drive voltage index modulation range. These harmonics have high amplitude and low frequency, causing high drive losses, and can be reduced by a modulation with semiconductors switching in a frequency equivalent to 360Hz, with high quality and symmetrical voltage and currents waveforms. SHE-PWM was compared with POD-PWM at the same switching rate, through simulation and harmonic content investigated by the DTFT (Discrete Time Fourier Transform).
{"title":"Application of a SHE-PWM modulation for a low switching frequency motor drive with harmonic investigation using the DTFT","authors":"Marcos Paulo Brito Gomes, Marina Hassen de Souza, G. V. Ramos, A. Luiz, M. M. Stopa","doi":"10.1109/COBEP/SPEC44138.2019.9065386","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065386","url":null,"abstract":"This paper presents a study related to an electric drive composed by an induction machine fed by a NPC (neutral point clamped) frequency inverter, extending also to ANPC (active neutral point clamped) topologies, and IGBTs commanded by a SHE-PWM (selective harmonic elimination pulse width modulation) logic pattern. This work also addresses a concern related to the number of dv/dts reproduced in a fundamental period of a waveform, which is related to the semiconductors switching frequency. These dv/dts cause degradations to electric motors and its mitigation contributes minimizing problems on windings, insulations and bearings erosion. A SHE-PWM pattern with very low switching frequency is presented with simulations and experimental results mitigating the 5th and 7th harmonics for the entire drive voltage index modulation range. These harmonics have high amplitude and low frequency, causing high drive losses, and can be reduced by a modulation with semiconductors switching in a frequency equivalent to 360Hz, with high quality and symmetrical voltage and currents waveforms. SHE-PWM was compared with POD-PWM at the same switching rate, through simulation and harmonic content investigated by the DTFT (Discrete Time Fourier Transform).","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"29 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87279040","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065728
Victor E. S. Barbosa, R. A. S. Kraemer, E. Carati, J. D. da Costa, R. Cardoso, C. Stein
This paper presents a time and event based control strategy that guarantees the connection and operation of the grid-tied inverter to the IEEE 1547-2018 standard. The control structure is composed by a synchronization algorithm and current controller with active damping based on capacitor current estimation. This structure guarantees the high performance of the real time control presented in this paper. Moreover, the proposed control structure also includes the distributed generation (DG) manager, which is responsible for determining the operation mode of DG system: Connection; Active power limitation (Normal operation); Reactive power limitation; Dispatch interruption; and, Disconnection. Besides, flow charts are presented in order to describe the connection and disconnection procedures, as well the modes of operation. The proposed strategy is implemented in a DSP (Digital Signal Processor) connected to a Hardware in the Loop (HIL) system. Real time domain emulations are performed considering a 15 kW three-phase grid-tied inverter and the results are discussed.
{"title":"Event Manager and Control Structure for High Performance Three-Phase Grid-tied Inverters","authors":"Victor E. S. Barbosa, R. A. S. Kraemer, E. Carati, J. D. da Costa, R. Cardoso, C. Stein","doi":"10.1109/COBEP/SPEC44138.2019.9065728","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065728","url":null,"abstract":"This paper presents a time and event based control strategy that guarantees the connection and operation of the grid-tied inverter to the IEEE 1547-2018 standard. The control structure is composed by a synchronization algorithm and current controller with active damping based on capacitor current estimation. This structure guarantees the high performance of the real time control presented in this paper. Moreover, the proposed control structure also includes the distributed generation (DG) manager, which is responsible for determining the operation mode of DG system: Connection; Active power limitation (Normal operation); Reactive power limitation; Dispatch interruption; and, Disconnection. Besides, flow charts are presented in order to describe the connection and disconnection procedures, as well the modes of operation. The proposed strategy is implemented in a DSP (Digital Signal Processor) connected to a Hardware in the Loop (HIL) system. Real time domain emulations are performed considering a 15 kW three-phase grid-tied inverter and the results are discussed.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"16 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87665611","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065476
Murilo Brunel da Rosa, Menaouar Berrehil El Kattel, Robson Mayer, Sérgio Vidal Garcia Oliveira
In this paper, the theoretical analysis and the experimental results of the bidirectional coupled inductor DC-DC converter are presented. The proposed topology is relatively feasible for low-input-voltage applications for interfacing energy storage elements, such as batteries, and ultracapacitors with the high voltage DC bus in hybrid electric vehicles and electric vehicles. The operation principles, the dc voltage gain, the filters design and the voltage and current stresses are discussed. In order to validate the theoretical study and to prove the converter performance, some experimental results are obtained from a laboratory prototype of 600 W.
{"title":"Experimental Results of a Bidirectional Coupled Inductor DC-DC Converter","authors":"Murilo Brunel da Rosa, Menaouar Berrehil El Kattel, Robson Mayer, Sérgio Vidal Garcia Oliveira","doi":"10.1109/COBEP/SPEC44138.2019.9065476","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065476","url":null,"abstract":"In this paper, the theoretical analysis and the experimental results of the bidirectional coupled inductor DC-DC converter are presented. The proposed topology is relatively feasible for low-input-voltage applications for interfacing energy storage elements, such as batteries, and ultracapacitors with the high voltage DC bus in hybrid electric vehicles and electric vehicles. The operation principles, the dc voltage gain, the filters design and the voltage and current stresses are discussed. In order to validate the theoretical study and to prove the converter performance, some experimental results are obtained from a laboratory prototype of 600 W.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"49 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90760280","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065318
J. F. Guerreiro, Hildo Guillardi Júnior, J. Pomilio
Nowadays, power electronics inverters are everywhere, from customer electronics to industry applications. In the heart of these converters there are discrete semiconductor switches. Most applications make use of Insulated Gate Bipolar Transistors (IGBTs), which are a first choice due to their switching capabilities (from several thousands of hertz to some tens of kilohertz’s) and power (from some tens of watts to megawatts). However, some applications may require faster switching frequencies, such as aeronautical and automotive electrical systems. In this scenario, FET-Based devices are a suitable choice due to their extremely fast switching characteristics. Yet, high speed switching creates problematic effects such as voltage and current oscillations which are disparately addressed in literature. Thus, this work incorporates various design advice to elaborate a methodology for the design of a 5kVA - 100kHz FET-Based full-bridge inverter. Recommendations are given for components selection, gate driver realization and layout of the power tracks. Simulations and experimental results are shown to validate the proposed methodology.
{"title":"Design Procedures and Prototyping of a Full-Bridge High Frequency Power Inverter","authors":"J. F. Guerreiro, Hildo Guillardi Júnior, J. Pomilio","doi":"10.1109/COBEP/SPEC44138.2019.9065318","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065318","url":null,"abstract":"Nowadays, power electronics inverters are everywhere, from customer electronics to industry applications. In the heart of these converters there are discrete semiconductor switches. Most applications make use of Insulated Gate Bipolar Transistors (IGBTs), which are a first choice due to their switching capabilities (from several thousands of hertz to some tens of kilohertz’s) and power (from some tens of watts to megawatts). However, some applications may require faster switching frequencies, such as aeronautical and automotive electrical systems. In this scenario, FET-Based devices are a suitable choice due to their extremely fast switching characteristics. Yet, high speed switching creates problematic effects such as voltage and current oscillations which are disparately addressed in literature. Thus, this work incorporates various design advice to elaborate a methodology for the design of a 5kVA - 100kHz FET-Based full-bridge inverter. Recommendations are given for components selection, gate driver realization and layout of the power tracks. Simulations and experimental results are shown to validate the proposed methodology.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"101 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80784902","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065814
Eduardo Luiz Santos da Silva, André Luís Kirsten, D. Pagano
This article presents the design and evaluation of a discrete non-linear controller with bilinear approximation to regulate the output voltage of a Dual Active Bridge (DAB) converter under parametric uncertainties. In this paper we consider the possible uncertainties in the system, such as variations in load and input voltage. The drive is controlled by single phase shift modulation (SPS) with a fixed duty cycle. The discrete controller developed ensures disturbance rejection, reference tracking and zero overshoot, with a small transient regime. The results obtained through the Typhoon HIL are presented to validate the effectiveness of the developed controller.
{"title":"Discrete SPS Control of a DAB converter using partial Feedback Linearization","authors":"Eduardo Luiz Santos da Silva, André Luís Kirsten, D. Pagano","doi":"10.1109/COBEP/SPEC44138.2019.9065814","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065814","url":null,"abstract":"This article presents the design and evaluation of a discrete non-linear controller with bilinear approximation to regulate the output voltage of a Dual Active Bridge (DAB) converter under parametric uncertainties. In this paper we consider the possible uncertainties in the system, such as variations in load and input voltage. The drive is controlled by single phase shift modulation (SPS) with a fixed duty cycle. The discrete controller developed ensures disturbance rejection, reference tracking and zero overshoot, with a small transient regime. The results obtained through the Typhoon HIL are presented to validate the effectiveness of the developed controller.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"11 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79111271","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065794
Â. D. dos Santos, Lucas Taylan P. Medeiros, Leonardo P. S. Silva, I. D. S. Junior, V. S. C. Teixeira, Adson Bezerra Moreira
The main contribution of this paper is to present a methodology proposal for the development of active and reactive power control of a wind power generation system connected to the grid using the three-phase induction generator with a squirrel cage rotor (SCIG). The SCIG stator terminals are connected to electric grid before the inductive filter using an AC/DC/AC power converter topology, called back-to-back, while the rotor terminals are short circuited, so that the SCIG’s active and reactive power control techniques are presented. The control of grid side converter (GSC) is presented, responsible for the power control and also for keeping the DC bus voltage constant. The control of induction generator side converter (IGSC) is presented also, in which vector control is used in rotor variables, so that the SCIG is controlled through the torque references and magnetizing current. The studied system was mathematically modeled and simulated using Matlab/Simulink software.
{"title":"Wind power system connected to the grid from Squirrel Cage Induction Generator (SCIG)","authors":"Â. D. dos Santos, Lucas Taylan P. Medeiros, Leonardo P. S. Silva, I. D. S. Junior, V. S. C. Teixeira, Adson Bezerra Moreira","doi":"10.1109/COBEP/SPEC44138.2019.9065794","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065794","url":null,"abstract":"The main contribution of this paper is to present a methodology proposal for the development of active and reactive power control of a wind power generation system connected to the grid using the three-phase induction generator with a squirrel cage rotor (SCIG). The SCIG stator terminals are connected to electric grid before the inductive filter using an AC/DC/AC power converter topology, called back-to-back, while the rotor terminals are short circuited, so that the SCIG’s active and reactive power control techniques are presented. The control of grid side converter (GSC) is presented, responsible for the power control and also for keeping the DC bus voltage constant. The control of induction generator side converter (IGSC) is presented also, in which vector control is used in rotor variables, so that the SCIG is controlled through the torque references and magnetizing current. The studied system was mathematically modeled and simulated using Matlab/Simulink software.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"63 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83283694","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065540
Zhimeng Liu, Lifang Wang, Chengliang Yin, Yanjie Guo, Chengxuan Tao
This paper presents the analysis of constant voltage (CV) output wireless power transfer (WPT) system with a DC-DC converter load, including characteristics of system efficiency and output voltage. Firstly, the WPT system model with LCC/S compensation network and a DC-DC converter is established. Then, system transmission power and efficiency are deduced on the CV condition, and the boost circuit’s influence on the WPT system is analyzed. Finally, a 1kW WPT prototype is built and simulations are conducted. Experimental results have proved that a proper DC-DC converter can improve the WPT system’s efficiency and the WPT system can keep a constant output voltage.
{"title":"A Research on Constant Voltage Output Characteristics of Wireless Power Transfer System with A DC-DC Converter","authors":"Zhimeng Liu, Lifang Wang, Chengliang Yin, Yanjie Guo, Chengxuan Tao","doi":"10.1109/COBEP/SPEC44138.2019.9065540","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065540","url":null,"abstract":"This paper presents the analysis of constant voltage (CV) output wireless power transfer (WPT) system with a DC-DC converter load, including characteristics of system efficiency and output voltage. Firstly, the WPT system model with LCC/S compensation network and a DC-DC converter is established. Then, system transmission power and efficiency are deduced on the CV condition, and the boost circuit’s influence on the WPT system is analyzed. Finally, a 1kW WPT prototype is built and simulations are conducted. Experimental results have proved that a proper DC-DC converter can improve the WPT system’s efficiency and the WPT system can keep a constant output voltage.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"63 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87396979","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065298
Rafael Magalhães Nóbrega de Araújo, Hugo Álisson Alves da Costa, João T. de Carvalho Neto, Alexandre Magnus F. Guimarães, A. Salazar
The solar photovoltaic energy is one of the main renewable energy alternatives for countries to achieve a greater diversity in their energy matrix. It benefits from high levels of incident solar irradiance. However, the increase in temperature that comes with it, allied to other environmental variables lowers its overall yield. One cooling option is to use thermoelectric, or Peltier cells. This paper aims to study a hybrid system that seeks an increase of a photovoltaic module yield through its active cooling by a thermoelectric cell. Research strategies include evaluation of controlled temperature, number of thermoelectric cells for a given photovoltaic module, use of maximum power tracking algorithms together with control of the thermoelectric cells power supply to achieve an optimum point of operation. This study uses mathematical models, and simulations to show that the use of thermoelectric cells to cool off the photovoltaic module can increase its yield by up to 7% in the cases studied.
{"title":"Development of a Hybrid PV-Thermoelectric System","authors":"Rafael Magalhães Nóbrega de Araújo, Hugo Álisson Alves da Costa, João T. de Carvalho Neto, Alexandre Magnus F. Guimarães, A. Salazar","doi":"10.1109/COBEP/SPEC44138.2019.9065298","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065298","url":null,"abstract":"The solar photovoltaic energy is one of the main renewable energy alternatives for countries to achieve a greater diversity in their energy matrix. It benefits from high levels of incident solar irradiance. However, the increase in temperature that comes with it, allied to other environmental variables lowers its overall yield. One cooling option is to use thermoelectric, or Peltier cells. This paper aims to study a hybrid system that seeks an increase of a photovoltaic module yield through its active cooling by a thermoelectric cell. Research strategies include evaluation of controlled temperature, number of thermoelectric cells for a given photovoltaic module, use of maximum power tracking algorithms together with control of the thermoelectric cells power supply to achieve an optimum point of operation. This study uses mathematical models, and simulations to show that the use of thermoelectric cells to cool off the photovoltaic module can increase its yield by up to 7% in the cases studied.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"4 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87400050","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065499
Valesca Bettim Feltrin, Thiago Brezolin Dalmolin, L. Bellinaso, L. Michels
Equivalent grid impedance is an important information for testing control stability of grid-connected inverters. Furthermore, grid impedance parameters impact on local grid voltage when the local load or generator changes its active and reactive power. In grid connection standards such as the Brazilian Association of Technical Standards (ABNT) Brazilian Regulatory Standard (NBR) 16149, Photovoltaic (PV) inverters higher than 6 kW shall have external control of active and reactive power. This manuscript proposes a methodology for experimental determination of grid impedance by using the external commands of PV inverters. Experimental results were obtained with a 100 kW inverter of a photovoltaic power plant, and then the local grid impedance was calculated. Finally, the impedance calculation was validated in simulation.
{"title":"Methodology for experimental determination of equivalent grid impedance by using external commands of PV inverters","authors":"Valesca Bettim Feltrin, Thiago Brezolin Dalmolin, L. Bellinaso, L. Michels","doi":"10.1109/COBEP/SPEC44138.2019.9065499","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065499","url":null,"abstract":"Equivalent grid impedance is an important information for testing control stability of grid-connected inverters. Furthermore, grid impedance parameters impact on local grid voltage when the local load or generator changes its active and reactive power. In grid connection standards such as the Brazilian Association of Technical Standards (ABNT) Brazilian Regulatory Standard (NBR) 16149, Photovoltaic (PV) inverters higher than 6 kW shall have external control of active and reactive power. This manuscript proposes a methodology for experimental determination of grid impedance by using the external commands of PV inverters. Experimental results were obtained with a 100 kW inverter of a photovoltaic power plant, and then the local grid impedance was calculated. Finally, the impedance calculation was validated in simulation.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75439653","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065887
S. Toledo, M. Rivera, E. Maqueda, M. Ayala, J. Pacher, C. Romero, R. Gregor, T. Dragičević, P. Wheeler
Increasing world electrical energy demand make necessary to develop new efficient and reliable schemes for power injection to the existing grid under distributed generation frames. In this work a novel DC-AC control scheme is proposed, which is based on one hand, on several 2L-VSI working together as a multi-modular converter in a parallel switching connection topology in the power converter stage and, in the other hand, a control strategy using two loops, an internal based on predictive voltage control and another external applying a PR current control, achieving THD levels lower than 1% for the injected current, accomplishing with the international standards for these kind of applications.
{"title":"Multi-modular scalable DC-AC power converter for current injection to the grid based on predictive voltage control","authors":"S. Toledo, M. Rivera, E. Maqueda, M. Ayala, J. Pacher, C. Romero, R. Gregor, T. Dragičević, P. Wheeler","doi":"10.1109/COBEP/SPEC44138.2019.9065887","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065887","url":null,"abstract":"Increasing world electrical energy demand make necessary to develop new efficient and reliable schemes for power injection to the existing grid under distributed generation frames. In this work a novel DC-AC control scheme is proposed, which is based on one hand, on several 2L-VSI working together as a multi-modular converter in a parallel switching connection topology in the power converter stage and, in the other hand, a control strategy using two loops, an internal based on predictive voltage control and another external applying a PR current control, achieving THD levels lower than 1% for the injected current, accomplishing with the international standards for these kind of applications.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"43 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91540247","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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