Pub Date : 2012-06-25DOI: 10.1109/PEDG.2012.6254003
Honglin Zhou, M. Kuang, Jiandong Wu
This paper proposes a new rotor position and speed estimation method for sensorless control of PMSM in high speed range. In order to improve the dynamic performance of conventional back-EMF methods, the proposed method eliminates the Phase-Lock Loop (PLL) while at the same time, avoids the potential local loop that might cause system unstable in closed-loop sensorless control. Instead of directly filtering the fast-changing calculated rotor position signal, the proposed method first filters a slowly varying signal, i.e. the calculated initial rotor position, to obtain the estimated rotor position. Then the estimated initial rotor position is added to the calculated rotor position to form an unbiased estimation of rotor position. The simulation results of a typical 1.5MW direct drive wind turbine system illustrate that the steady-state performance of the proposed method is similar to conventional EPLL method but the dynamic performance for rotor position is considerably improved, owning to its forward structure.
{"title":"A rotor position and speed estimation method for sensorless control of permanent magnetic synchronous motor","authors":"Honglin Zhou, M. Kuang, Jiandong Wu","doi":"10.1109/PEDG.2012.6254003","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254003","url":null,"abstract":"This paper proposes a new rotor position and speed estimation method for sensorless control of PMSM in high speed range. In order to improve the dynamic performance of conventional back-EMF methods, the proposed method eliminates the Phase-Lock Loop (PLL) while at the same time, avoids the potential local loop that might cause system unstable in closed-loop sensorless control. Instead of directly filtering the fast-changing calculated rotor position signal, the proposed method first filters a slowly varying signal, i.e. the calculated initial rotor position, to obtain the estimated rotor position. Then the estimated initial rotor position is added to the calculated rotor position to form an unbiased estimation of rotor position. The simulation results of a typical 1.5MW direct drive wind turbine system illustrate that the steady-state performance of the proposed method is similar to conventional EPLL method but the dynamic performance for rotor position is considerably improved, owning to its forward structure.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122679507","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 : 2012-06-25DOI: 10.1109/PEDG.2012.6254056
F. Huerta, S. Cóbreces, F. Rodríguez, M. Moranchel, I. Sanz
The paper proposes a multivariable identification method to identify the discrete state-space model of a grid-connected voltage-source converter and LCL filter. The method is based in one of the so-called subspace identification methods: the N4SID method. That kind of methods are based on the QR and the Singular Values decompositions and works with black-box state-space model structures, which mean particularly flexibility in the choice of the model representation. The so obtained discrete state-space model of the converter could be used to design directly the control of the system using advanced control techniques as robust control, optimal control, etc.
{"title":"State-space black-box model identification of a voltage-source converter with LCL filter","authors":"F. Huerta, S. Cóbreces, F. Rodríguez, M. Moranchel, I. Sanz","doi":"10.1109/PEDG.2012.6254056","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254056","url":null,"abstract":"The paper proposes a multivariable identification method to identify the discrete state-space model of a grid-connected voltage-source converter and LCL filter. The method is based in one of the so-called subspace identification methods: the N4SID method. That kind of methods are based on the QR and the Singular Values decompositions and works with black-box state-space model structures, which mean particularly flexibility in the choice of the model representation. The so obtained discrete state-space model of the converter could be used to design directly the control of the system using advanced control techniques as robust control, optimal control, etc.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128581749","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 : 2012-06-25DOI: 10.1109/PEDG.2012.6254012
J. Jeon, Jong-Yul Kim, Seul-Ki Kim, Jang-Mok Kim
An intermittent power of renewable sources such as wind turbine and photovoltaic system can damage power quality and operation efficiency of generator. Specially, in case of standalone microgrid such as island power system, this intermittent characteristic of renewable resource can lead to severe problems, such as frequency oscillation and power fluctuation. This frequency oscillation and power fluctuation can be a cause of system stability problem and operation efficiency drop. This paper presents unified compensation control strategy of a hybrid electric energy storage system in order to improve power quality and operating efficiency in a diesel and wind-turbine based stand-alone microgrid. This study addressed an AC hybrid energy storage system which was composed of lead acid battery storage and electric double layered capacitor, and presented a compensation control strategy with modified droop and wind power compensation for damping system frequency and power fluctuation. Usefulness of the proposed control algorithm is verified by experimental test results for system frequency, voltage, power fluctuation of the generator, and operation efficiency. Comparison tests with conventional compensation methods were performed to validate the effectiveness of the proposed control method.
{"title":"Unified compensation control of a hybrid energy storage system for enhancing power quality and operation efficiency in a diesel and wind-turbine based stand-alone microgrid","authors":"J. Jeon, Jong-Yul Kim, Seul-Ki Kim, Jang-Mok Kim","doi":"10.1109/PEDG.2012.6254012","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254012","url":null,"abstract":"An intermittent power of renewable sources such as wind turbine and photovoltaic system can damage power quality and operation efficiency of generator. Specially, in case of standalone microgrid such as island power system, this intermittent characteristic of renewable resource can lead to severe problems, such as frequency oscillation and power fluctuation. This frequency oscillation and power fluctuation can be a cause of system stability problem and operation efficiency drop. This paper presents unified compensation control strategy of a hybrid electric energy storage system in order to improve power quality and operating efficiency in a diesel and wind-turbine based stand-alone microgrid. This study addressed an AC hybrid energy storage system which was composed of lead acid battery storage and electric double layered capacitor, and presented a compensation control strategy with modified droop and wind power compensation for damping system frequency and power fluctuation. Usefulness of the proposed control algorithm is verified by experimental test results for system frequency, voltage, power fluctuation of the generator, and operation efficiency. Comparison tests with conventional compensation methods were performed to validate the effectiveness of the proposed control method.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129027421","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 : 2012-06-25DOI: 10.1109/PEDG.2012.6254107
Hongfei Wu, K. Sun, Zihu Zhou, Y. Xing
In order to involve multiple different renewable energy sources and balance power flow, a four-port full-bridge converter (FPFBC) with distributed maximum power point tracking (DMPPT) is proposed for renewable power systems. This converter, featuring two input ports, one bidirectional port and one isolated output port, is derived by integrating two Buck-Boost converters and a full-bridge converter. The switching legs are shared by the Buck/Boost converter and full-bride converter. Hence, single stage conversion between any two of the ports is achieved. As a result, high power density and high efficiency can be guaranteed. DMPPT is realized on the two input ports connecting to different renewable sources, which ensures maximum renewable energy harvest. A pulse-width modulation plus phase angle shift control scheme and a power control strategy are presented for the FPFBC to implement the power management of the four ports. The operation modes and principles of the proposed converter, along with the design considerations, are discussed in detail. Simulation and experimental results verify the feasibility and effectiveness of the proposed converter.
{"title":"An integrated four-port full-bridge converter with DMPPT for renewable power system","authors":"Hongfei Wu, K. Sun, Zihu Zhou, Y. Xing","doi":"10.1109/PEDG.2012.6254107","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254107","url":null,"abstract":"In order to involve multiple different renewable energy sources and balance power flow, a four-port full-bridge converter (FPFBC) with distributed maximum power point tracking (DMPPT) is proposed for renewable power systems. This converter, featuring two input ports, one bidirectional port and one isolated output port, is derived by integrating two Buck-Boost converters and a full-bridge converter. The switching legs are shared by the Buck/Boost converter and full-bride converter. Hence, single stage conversion between any two of the ports is achieved. As a result, high power density and high efficiency can be guaranteed. DMPPT is realized on the two input ports connecting to different renewable sources, which ensures maximum renewable energy harvest. A pulse-width modulation plus phase angle shift control scheme and a power control strategy are presented for the FPFBC to implement the power management of the four ports. The operation modes and principles of the proposed converter, along with the design considerations, are discussed in detail. Simulation and experimental results verify the feasibility and effectiveness of the proposed converter.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130308460","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 : 2012-06-25DOI: 10.1109/PEDG.2012.6254050
N. Orlando, R. Mastromauro, Marco Liserre, D. Cafagna, G. Grassi
This paper deals with a small wind turbine system (WTS) constituted by a permanent magnet synchronous generator (PMSG) connected to the grid via a back-to-back converter. The Low Voltage Ride through (LVRT) requirements for the WTS are described and the nonlinear dynamics of a grid-side converter is analyzed in the presence of voltage sags. The study shows that new chaotic phenomena are generated when the size of the dc-link capacitor is reduced. The reported time waveforms and state-space attractors clearly highlight that the system becomes chaotic during the voltage sag, being stable before and after the occurrence of the disturbance. Finally, the chaotic behavior is validated via the 0-1 test for chaos, thus confirming the novel phenomenon described herein.
{"title":"New chaotic phenomena occurring during voltage sags in small wind turbine systems based on back-to-back converters","authors":"N. Orlando, R. Mastromauro, Marco Liserre, D. Cafagna, G. Grassi","doi":"10.1109/PEDG.2012.6254050","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254050","url":null,"abstract":"This paper deals with a small wind turbine system (WTS) constituted by a permanent magnet synchronous generator (PMSG) connected to the grid via a back-to-back converter. The Low Voltage Ride through (LVRT) requirements for the WTS are described and the nonlinear dynamics of a grid-side converter is analyzed in the presence of voltage sags. The study shows that new chaotic phenomena are generated when the size of the dc-link capacitor is reduced. The reported time waveforms and state-space attractors clearly highlight that the system becomes chaotic during the voltage sag, being stable before and after the occurrence of the disturbance. Finally, the chaotic behavior is validated via the 0-1 test for chaos, thus confirming the novel phenomenon described herein.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124293156","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 : 2012-06-25DOI: 10.1109/PEDG.2012.6254104
W. Chae, Juyong Kim, Jintae Cho, Jungsung Park
This paper proposes a smart switch panel (SSP) that can link distributed generations more economically and actively to improve power quality for customers, prevent power failure through independent operation in case of power failure in electric power systems (EPS), and trade electricity with Smart Grid operation systems as they become more widespread. For the economical interconnection of distributed generations and to reduce installation spaces, a power converter was installed in the switch panel, and the power converter was proposed in a form wherein diverse distributed generations share the DC link and inverter. A static transfer switch (STS) was installed so that customers can prevent power failure through independent operation even in case of EPS failure. An intelligent electronic device (IED) was installed so that power can be exchanged with EPS or nearby customers and to enable protection control so that all current standards for the interconnection of distributed generations are met.
{"title":"Optimal interconnection device for distributed energy resources of customer","authors":"W. Chae, Juyong Kim, Jintae Cho, Jungsung Park","doi":"10.1109/PEDG.2012.6254104","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254104","url":null,"abstract":"This paper proposes a smart switch panel (SSP) that can link distributed generations more economically and actively to improve power quality for customers, prevent power failure through independent operation in case of power failure in electric power systems (EPS), and trade electricity with Smart Grid operation systems as they become more widespread. For the economical interconnection of distributed generations and to reduce installation spaces, a power converter was installed in the switch panel, and the power converter was proposed in a form wherein diverse distributed generations share the DC link and inverter. A static transfer switch (STS) was installed so that customers can prevent power failure through independent operation even in case of EPS failure. An intelligent electronic device (IED) was installed so that power can be exchanged with EPS or nearby customers and to enable protection control so that all current standards for the interconnection of distributed generations are met.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127728628","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 : 2012-06-25DOI: 10.1109/PEDG.2012.6254082
S. Mazumder, S. Mehrnami
This paper covers the design and analysis of a compact inverter for photovoltaic (PV) and fuel-cell applications. The inverter is made up of two isolated Ćuk converters working differentially to create a 60-Hz sinusoidal output. This enables direct dc/ac conversion with low device count and yields a simple drive-circuitry. This configuration will lower converter cost and size and can achieve an estimated efficiency of ≥ 95%. Key topics covered in this paper include analysis of the inverter topology and its design.
{"title":"A low-device-count single-stage direct-power-conversion solar microinverter for microgrid","authors":"S. Mazumder, S. Mehrnami","doi":"10.1109/PEDG.2012.6254082","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254082","url":null,"abstract":"This paper covers the design and analysis of a compact inverter for photovoltaic (PV) and fuel-cell applications. The inverter is made up of two isolated Ćuk converters working differentially to create a 60-Hz sinusoidal output. This enables direct dc/ac conversion with low device count and yields a simple drive-circuitry. This configuration will lower converter cost and size and can achieve an estimated efficiency of ≥ 95%. Key topics covered in this paper include analysis of the inverter topology and its design.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"307 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122803947","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 : 2012-06-25DOI: 10.1109/PEDG.2012.6254084
S. Nababan, E. Muljadi, F. Blaabjerg
This paper is an overview of different power topologies of micro-hydro turbines. The size of micro-hydro turbine is typically under 100kW. Conventional topologies of micro-hydro power are stand-alone operation used in rural electrical network in developing countries. Recently, many of micro-hydro power generations are connected to the distribution network through power electronics (PE). This turbines are operated in variable frequency operation to improve efficiency of micro-hydro power generation, improve the power quality, and ride through capability of the generation. In this paper our discussion is limited to the distributed generation. Like many other renewable energy sources, the objectives of micro-hydro power generation are to reduce the use of fossil fuel, to improve the reliability of the distribution system (grid), and to reduce the transmission losses. The overview described in this paper includes micro-hydro power generation, stand-alone topologies, fixed speed generation (FSG), variable speed generation (VSG), direct-connected grid integration topology, and PE grid integration topologies.
本文概述了微型水轮机的不同功率拓扑结构。微型水轮机的功率一般在 100 千瓦以下。微型水力发电的传统拓扑结构是独立运行，用于发展中国家的农村电网。最近，许多微型水力发电通过电力电子设备（PE）连接到配电网络。这种涡轮机采用变频运行，以提高微型水力发电的效率、改善电能质量和发电的穿越能力。本文的讨论仅限于分布式发电。与许多其他可再生能源一样，微型水力发电的目标是减少化石燃料的使用、提高配电系统（电网）的可靠性和减少输电损耗。本文概述了微型水力发电、独立拓扑结构、定速发电（FSG）、变速发电（VSG）、直接并网拓扑结构和 PE 并网拓扑结构。
{"title":"An overview of power topologies for micro-hydro turbines","authors":"S. Nababan, E. Muljadi, F. Blaabjerg","doi":"10.1109/PEDG.2012.6254084","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254084","url":null,"abstract":"This paper is an overview of different power topologies of micro-hydro turbines. The size of micro-hydro turbine is typically under 100kW. Conventional topologies of micro-hydro power are stand-alone operation used in rural electrical network in developing countries. Recently, many of micro-hydro power generations are connected to the distribution network through power electronics (PE). This turbines are operated in variable frequency operation to improve efficiency of micro-hydro power generation, improve the power quality, and ride through capability of the generation. In this paper our discussion is limited to the distributed generation. Like many other renewable energy sources, the objectives of micro-hydro power generation are to reduce the use of fossil fuel, to improve the reliability of the distribution system (grid), and to reduce the transmission losses. The overview described in this paper includes micro-hydro power generation, stand-alone topologies, fixed speed generation (FSG), variable speed generation (VSG), direct-connected grid integration topology, and PE grid integration topologies.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126246252","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 : 2012-06-25DOI: 10.1002/9780470824054.CH8
M. Abusara, M. Jamil, S. Sharkh
Repetitive control can be effective in improving current quality when used with grid-connected inverters. Mathematically, a repetitive controller is equivalent to a parallel combination of resonant controllers with high gain at the fundamental frequency and its harmonics, and accordingly good disturbance rejection can be achieved at these frequencies. To ensure stability, a low-pass filter needs to be incorporated within the repetitive controller to attenuate the high frequency resonant peaks of the controller gain (above the system's cross-over frequency), without significantly affecting the low frequency resonant peaks corresponding to significant grid harmonics that need to be rejected. The paper therefore argues that it is desirable that the system and the inverter's output filter should have a high bandwidth - higher than the most significant grid harmonics - which may be counter intuitive. The high bandwidth requirement dictates a high PWM switching frequency, which becomes challenging in high power systems as the maximum achievable switching frequency of power electronic devices reduces as their power rating increases. This limitation can be overcome in low voltage systems by using an interleaved inverter topology in which the power is shared between several 2-level half-bridge inverter legs connected in parallel. In addition to using low power devices capable of high switching frequency, the value of the LC output filter capacitance can be relatively very small thanks to the ripple cancellation feature of the interleaved inverter. Both of these features mean that the bandwidth of an interleaved inverter can be much higher than that achievable using a classical 2-level inverter with an LCL output filter. The paper discusses the design and practical implementation of a repetitive controller for an interleaved inverter with 6 half-bridge legs per phase. Simulation and experimental results are also presented to demonstrate the effectiveness of the proposed controller in improving the THD of the output current of the inverter.
{"title":"Repetitive current control of an interleaved grid-connected inverter","authors":"M. Abusara, M. Jamil, S. Sharkh","doi":"10.1002/9780470824054.CH8","DOIUrl":"https://doi.org/10.1002/9780470824054.CH8","url":null,"abstract":"Repetitive control can be effective in improving current quality when used with grid-connected inverters. Mathematically, a repetitive controller is equivalent to a parallel combination of resonant controllers with high gain at the fundamental frequency and its harmonics, and accordingly good disturbance rejection can be achieved at these frequencies. To ensure stability, a low-pass filter needs to be incorporated within the repetitive controller to attenuate the high frequency resonant peaks of the controller gain (above the system's cross-over frequency), without significantly affecting the low frequency resonant peaks corresponding to significant grid harmonics that need to be rejected. The paper therefore argues that it is desirable that the system and the inverter's output filter should have a high bandwidth - higher than the most significant grid harmonics - which may be counter intuitive. The high bandwidth requirement dictates a high PWM switching frequency, which becomes challenging in high power systems as the maximum achievable switching frequency of power electronic devices reduces as their power rating increases. This limitation can be overcome in low voltage systems by using an interleaved inverter topology in which the power is shared between several 2-level half-bridge inverter legs connected in parallel. In addition to using low power devices capable of high switching frequency, the value of the LC output filter capacitance can be relatively very small thanks to the ripple cancellation feature of the interleaved inverter. Both of these features mean that the bandwidth of an interleaved inverter can be much higher than that achievable using a classical 2-level inverter with an LCL output filter. The paper discusses the design and practical implementation of a repetitive controller for an interleaved inverter with 6 half-bridge legs per phase. Simulation and experimental results are also presented to demonstrate the effectiveness of the proposed controller in improving the THD of the output current of the inverter.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127204366","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 : 2012-06-25DOI: 10.1109/PEDG.2012.6254106
Cam Pham, T. Kerekes, R. Teodorescu
Photovoltaic (PV) installation is suited for the residential environment and the generation pattern follows the distribution of residential power consumption in daylight hours. In the cases of unbalance between generation and demand, the Smart PV with its battery storage can absorb or inject the power to balance it. High efficient bidirectional converter for the battery storage is required due high system cost and because the power is processed twice. A 1.5kW prototype is designed and built with CoolMOS and SiC diodes, >;95% efficiency has been obtained with 200 kHz hard switching.
{"title":"High efficient bidirectional battery converter for residential PV systems","authors":"Cam Pham, T. Kerekes, R. Teodorescu","doi":"10.1109/PEDG.2012.6254106","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254106","url":null,"abstract":"Photovoltaic (PV) installation is suited for the residential environment and the generation pattern follows the distribution of residential power consumption in daylight hours. In the cases of unbalance between generation and demand, the Smart PV with its battery storage can absorb or inject the power to balance it. High efficient bidirectional converter for the battery storage is required due high system cost and because the power is processed twice. A 1.5kW prototype is designed and built with CoolMOS and SiC diodes, >;95% efficiency has been obtained with 200 kHz hard switching.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130136824","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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