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Microinverter with reduced number of semiconductor switches 减少半导体开关数量的微型逆变器
电力电子 Pub Date : 2019-12-01 DOI: 10.1109/COBEP/SPEC44138.2019.9065517
Paulo R. Cagnini, L. H. Meneghetti, Victor E. S. Barbosa, E. Carati, C. Stein, Z. Nadal, Jean M. S. Lafay, Jean Patric da Costa, R. Cardoso
{"title":"Microinverter with reduced number of semiconductor switches","authors":"Paulo R. Cagnini, L. H. Meneghetti, Victor E. S. Barbosa, E. Carati, C. Stein, Z. Nadal, Jean M. S. Lafay, Jean Patric da Costa, R. Cardoso","doi":"10.1109/COBEP/SPEC44138.2019.9065517","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065517","url":null,"abstract":"This paper proposes the use of a topology of a positive-input boost converter and symmetrical positive and negative outputs for the DC-DC stage of a microinverter connected to the electrical network with a small number of semiconductor switches. To validate and prove the operation of the system, simulations were performed in the PSIM software. All controllers and frequency-locked-loop (FLL) are exposed in the discrete form to facilitate implementation in a digital signal processor. For the reliability and adherence of the simulations with real cases, real data of solar irradiance and temperature of panels were experimentally collected and used.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"82 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":"89014721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New Five-Level Flying Capacitor Inverter Fed by a Boost-Flyback DC-DC Voltage Source 升压反激直流电压源馈电的新型五电平飞电容逆变器
电力电子 Pub Date : 2019-12-01 DOI: 10.1109/COBEP/SPEC44138.2019.9065351
Antonio Venâncio de M. Lacerda Filho, A. E. L. da Costa, E. D. da Silva, Ronnan de B. Cardoso, D. Fernandes
{"title":"New Five-Level Flying Capacitor Inverter Fed by a Boost-Flyback DC-DC Voltage Source","authors":"Antonio Venâncio de M. Lacerda Filho, A. E. L. da Costa, E. D. da Silva, Ronnan de B. Cardoso, D. Fernandes","doi":"10.1109/COBEP/SPEC44138.2019.9065351","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065351","url":null,"abstract":"This paper reports a new five-level pulse-width modulation (PWM) that includes a flying capacitor supplied by a boost/flyback DC-DC converter that also provides the DC-bus voltage. There is a significant reduction in the number of power devices and capacitors required to implement a conventional five-level flying capacitor inverter. The topology is free from complex PWM control to regulate the capacitor voltage and is capable of operating under any power factor condition. Simulated and experimental results validate the converter principle.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"1 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":"87507181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Real-Time implementation of a DC converter using Modified Nodal Analysis, Sparsity Handling and Parallelism on a DSP platform 利用改进节点分析、稀疏性处理和并行性在DSP平台上实时实现直流变换器
电力电子 Pub Date : 2019-12-01 DOI: 10.1109/COBEP/SPEC44138.2019.9065368
Luiz Felipe Corrêa de Sá Santos Ribeiro, F. Dicler, L. Rolim, M. Aredes
{"title":"Real-Time implementation of a DC converter using Modified Nodal Analysis, Sparsity Handling and Parallelism on a DSP platform","authors":"Luiz Felipe Corrêa de Sá Santos Ribeiro, F. Dicler, L. Rolim, M. Aredes","doi":"10.1109/COBEP/SPEC44138.2019.9065368","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065368","url":null,"abstract":"Modified Nodal Analysis(MNA) is a generalized method of discrete linear circuit analysis as a matrix equation, in which the matrix order is the sum of the number of nodes and the number of voltage sources, it also have additional lines for dynamic elements, such as capacitors and inductors, but for this work these lines were kept implicit using Nodal Analysis’ equations for historic sources. As this order grows, the computational effort for solving the equation grows to the square of its size. Therefore, optimizations are in place to better utilize the processing power of a hardware, so that more complex circuits can fit in less powerful simulators, avoiding problems associated with high values of time step, such as mathematical inaccuracy and instability. This paper presents a boost converter and a PI controller, each implemented in a separate Texas Instruments’ F28377S, assembled in a Hardware in the Loop configuration. The MNA is used for the plant discretization and a matrix multiplier is developed to solve it. This multiplier is then optimized with two methods: sparse matrix handling and a parallel multiplier. The sparsity is dealt with by storing the matrix in a Compressed Sparse Row(CSR) format and adjusting the multiplier. The parallel matrix multiplier is implemented using both the Control Law Accelerator(CLA) and the main CPU to reduce the processing time. The results presented by the comparison of each program shows that the The results are drawn from each multiplier and comparison is made between them, leading to a conclusion of the benefits of such implementation.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"38 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":"90202306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis and Comparison of the Dynamic Response of Direct and Indirect Rotor Flux Control Applied to an Asymmetrical Two-Phase Induction Motor 非对称两相感应电动机直接与间接转子磁链控制的动态响应分析与比较
电力电子 Pub Date : 2019-12-01 DOI: 10.1109/COBEP/SPEC44138.2019.9065299
Rafael de Farias Campos, J. de Oliveira, A. Nied
{"title":"Analysis and Comparison of the Dynamic Response of Direct and Indirect Rotor Flux Control Applied to an Asymmetrical Two-Phase Induction Motor","authors":"Rafael de Farias Campos, J. de Oliveira, A. Nied","doi":"10.1109/COBEP/SPEC44138.2019.9065299","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065299","url":null,"abstract":"This paper discusses two methods for asymmetrical two-phase induction motor control. The direct rotor field oriented control (DRFOC) and the indirect rotor field control (IRFOC) methods are investigated. Both control strategies were implemented in the same hardware with little modifications in the control algorithm. However, the intrinsic model asymmetry causes extra coupling between the stator windings. To use the field-orientated method, the asymmetry must be eliminated by using a transformation based on the mutual inductances. Experimental investigation was carried out and a comparative analysis of the performance of the two methods of control is presented. Based on experimental results of the DRFOC and IRFOC control systems, it is shown that the speed control and the flux control present a fast response even under load disturbance. In addition, the complexity for implementing both systems is identical. Although some questions were raised concerning the use of such transformation, it is still a viable solution as is demonstrated by the results.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"46 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":"89930931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design and Assembly of a Bipolar Marx Generator Based on Full-Bridge Topology Applied to Electroporation 应用于电穿孔的全桥拓扑双极马克思发生器的设计与装配
电力电子 Pub Date : 2019-12-01 DOI: 10.1109/COBEP/SPEC44138.2019.9065833
F. Imai, Y. D. de Novaes
{"title":"Design and Assembly of a Bipolar Marx Generator Based on Full-Bridge Topology Applied to Electroporation","authors":"F. Imai, Y. D. de Novaes","doi":"10.1109/COBEP/SPEC44138.2019.9065833","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065833","url":null,"abstract":"In this work is presented a bipolar Marx Generator (MG) to create pulsed electric fields in electroporation, technique consisting of creating pores on plasma membranes in different medical treatments. The Marx Generator is a voltage multiplier that charges capacitors in parallel and discharges them in series on the output. A new position for the power switches is proposed in order to allow a better control of capacitor individual usage. The main electrical parameters are mentioned and explained how they affect the design of the electroporator. At the end, experimetal tests are performed using vegetable samples as load, to analyze the current response and visual effects of the pulses application.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"40 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":"85040365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Integrating a Single Z-Source Network with a Modular Multilevel Converter for Voltage Boosting 集成一个单一的z源网络与一个模块化的多电平转换器升压
电力电子 Pub Date : 2019-12-01 DOI: 10.1109/COBEP/SPEC44138.2019.9065704
F. Khera, C. Klumpner, P. Wheeler
{"title":"Integrating a Single Z-Source Network with a Modular Multilevel Converter for Voltage Boosting","authors":"F. Khera, C. Klumpner, P. Wheeler","doi":"10.1109/COBEP/SPEC44138.2019.9065704","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065704","url":null,"abstract":"This paper proposes the integration of a Z-source network with the modular multilevel converter (MMC) to add voltage boosting capability to a voltage step down converter. To limit the increase in complexity, the proposed Z-source modular multilevel converter uses a single Z-source network that is interconnected between the corresponding terminals of the DC- input source and the DC-link terminals of the MMC. The authors previously presented a modulation technique for quasi Z-source MMC (qZS-MMC) referred to as the reduced inserted cells (RICs) PWM but a large size inductor for the two quasi Z- source networks were needed. This paper shows that utilising the RICs scheme with the-source MMC is more advantageous compared with the qZS-MMC. The operation principle of the Z- source MMC using RICs scheme and the derivation of key design parameters is presented in this paper by analysing the relevant current and voltage waveforms. The simulation results verify the operation and showcase the excellent waveform performance of the proposed topology.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"120 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":"83969812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Performance Analysis of Active Anti-islanding Techniques for Photovoltaic Application 光伏应用主动防孤岛技术性能分析
电力电子 Pub Date : 2019-12-01 DOI: 10.1109/COBEP/SPEC44138.2019.9065606
Marcos Roberto Oshiro, Ruben Barros Godoy, M. D. de Brito, L. Galotto
{"title":"Performance Analysis of Active Anti-islanding Techniques for Photovoltaic Application","authors":"Marcos Roberto Oshiro, Ruben Barros Godoy, M. D. de Brito, L. Galotto","doi":"10.1109/COBEP/SPEC44138.2019.9065606","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065606","url":null,"abstract":"In this paper some anti-islanding detection methods are evaluated through MatLab/Simulink® models. The methods are embedded into the control system of a voltage source inverter that is used to inject power to the grid from a set of photovoltaic modules. Due to low efficiency of the passive methods in detection of islanding and to the high cost of implementing the remote methods, only the active methods will be evaluated. In that sense, this paper presents comparative analysis regarding Active Frequency Drift (AFD), Slip-Mode Frequency Shift (SMS) and Sandia Frequency Shift (SFS) methods. Commonly, the active methods are implemented combining the passive sub/overvoltage and sub/overfrequency protection methods. The simulations presented comply with the voltage and frequency limits established by IEEE Std 929-2000 and harmonic distortion established by IEEE Std 519-2014.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"68 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":"86116306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
A Novel Phase-Locked Loop with Positive and Negative Sequence Detection Capability 一种具有正、负序列检测能力的锁相环
电力电子 Pub Date : 2019-12-01 DOI: 10.1109/COBEP/SPEC44138.2019.9065635
Jean M. L. Fonseca, Francisco Kleber A. Lima, C. Branco, R. G. Araújo
{"title":"A Novel Phase-Locked Loop with Positive and Negative Sequence Detection Capability","authors":"Jean M. L. Fonseca, Francisco Kleber A. Lima, C. Branco, R. G. Araújo","doi":"10.1109/COBEP/SPEC44138.2019.9065635","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065635","url":null,"abstract":"This paper proposes the expansion of two phase-locked loop structures to detect positive and negative sequence components. The first structure is a positive sequence detector only and the second one is a modification of the first one where an adaptive filter is added to increase filtering capability in scenarios with interharmonic distortion. Both proposed structures were implemented in the hardware-in-the-loop (HIL) dSPACE 1103 platform together with two well known structures, the DSOGI-FLL and the DDSRF-PLL. Steady-state and dynamic response of each structure were analyzed in scenarios with either harmonic distortion only or harmonic and interharmonic distortion. Results showed that the proposed structures are highly accurate, specifically under harmonic distortion, however the structure with adaptive filter is slower. In addition, results showed that the structures are at least as precise and fast as the DSOGI-FLL and DDSRF-PLL. Lastly, under interharmonic distortion, it is also found that the PLL with adaptive filter has an overall better performance.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"86 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":"84029575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling and Simulation of the Battery Energy Storage System for Analysis Impact in the Electrical Grid. 面向电网冲击分析的电池储能系统建模与仿真。
电力电子 Pub Date : 2019-12-01 DOI: 10.1109/COBEP/SPEC44138.2019.9065330
C. A. Caldeira, H. R. Schlickmann, A. D. de Almeida, L. V. Hartmann, C. Gehrke, F. Salvadori, Gilielson F. da Paz
{"title":"Modeling and Simulation of the Battery Energy Storage System for Analysis Impact in the Electrical Grid.","authors":"C. A. Caldeira, H. R. Schlickmann, A. D. de Almeida, L. V. Hartmann, C. Gehrke, F. Salvadori, Gilielson F. da Paz","doi":"10.1109/COBEP/SPEC44138.2019.9065330","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065330","url":null,"abstract":"With increasing use of intermittent renewable energy sources, energy storage is needed to maintain the balance between demand and supply. The renewable energy sources, e.g. solar and wind energy sources, are characterized by their intermittent generation, causing fluctuations in power generation, and, similarly, demand may vary. There may be fluctuations in power generation, and, similarly, demand may vary. Then, for these new sources become completely reliable as primary energy sources, energy storage is a crucial factor. This work uses real-time simulation to analyze the impact of battery-based energy storage systems on electrical systems. The simulator used is the OPAL-RT/5707™ real-time simulator, from OPAL-RT Technologies company. The simulated system consists of a three-phase inverter connected to a BESS (battery energy storage system) and to the electrical grid with variable loads. The obtained results from real-time simulations prove its effectiveness for this type of analysis and open the possibility to perform PHIL (power hardware in the loop) simulations.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"25 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":"81995003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Bridgeless Buck-Boost PFC Converter with Three-State Switching Cell 带三态开关单元的无桥压升压PFC变换器
电力电子 Pub Date : 2019-12-01 DOI: 10.1109/COBEP/SPEC44138.2019.9065748
D. C. Morais, Falcondes José Mendes de Seixas, Luís de Oro Arenas, Lucas Carvalho Souza, Luciano de Souza da Costa e Silva
{"title":"Bridgeless Buck-Boost PFC Converter with Three-State Switching Cell","authors":"D. C. Morais, Falcondes José Mendes de Seixas, Luís de Oro Arenas, Lucas Carvalho Souza, Luciano de Souza da Costa e Silva","doi":"10.1109/COBEP/SPEC44138.2019.9065748","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065748","url":null,"abstract":"In this paper, a bridgeless buck-boost converter with power factor correction is proposed, using a three-state switching cell named of B configuration, operating in continuous conduction mode. The bridgeless technique allows the bridge rectifier inclusion switched on power grid frequency, in the high frequency DC-DC converter stage, reducing the stages number required and increasing the structure reliability. Due to three-state switching cell configuration, there is a current stress division by half of the inductor current in all of circuit semiconductors. Moreover, the ripple frequency on converter energy storage elements is twice switching frequency value, which make easier the design of input and output passive filters and reduces the converter’s volume and weight. Preliminary simulation results prove the converter effectiveness on power factor correction, keeping output voltage stable in a specified operation point, with a total harmonic distortion of the input current less than 2%.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":"5 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":"79466087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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