Pub Date : 2016-03-20DOI: 10.1109/APEC.2016.7468175
Xing Yan, Zhan Shu, S. Sharkh
In this paper, a grid-connected single-phase neutral point clamped inverter is represented by a hybrid model with both continuous and discrete dynamics. A novel state-feedback switching control law is proposed in terms of linear matrix inequalities (LMIs) which can drive the output current to track a sinusoidal reference. The main advantage of this method is that the switching states of the inverter are directly determined by the controller. Another advantage is that the switching law can be obtained off-line, which significantly reduces the online computation burden. Then the neutral point voltage ripple is minimized by a capacitors voltage balancing controller. Simulation results confirm the feasibility and performance of the proposed control scheme.
{"title":"Hybrid modelling and control of single-phase grid-connected NPC inverters","authors":"Xing Yan, Zhan Shu, S. Sharkh","doi":"10.1109/APEC.2016.7468175","DOIUrl":"https://doi.org/10.1109/APEC.2016.7468175","url":null,"abstract":"In this paper, a grid-connected single-phase neutral point clamped inverter is represented by a hybrid model with both continuous and discrete dynamics. A novel state-feedback switching control law is proposed in terms of linear matrix inequalities (LMIs) which can drive the output current to track a sinusoidal reference. The main advantage of this method is that the switching states of the inverter are directly determined by the controller. Another advantage is that the switching law can be obtained off-line, which significantly reduces the online computation burden. Then the neutral point voltage ripple is minimized by a capacitors voltage balancing controller. Simulation results confirm the feasibility and performance of the proposed control scheme.","PeriodicalId":143091,"journal":{"name":"2016 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122292591","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 : 2016-03-20DOI: 10.1109/APEC.2016.7468294
J. Acero, C. Carretero, R. Alonso, J. Burdío
The inductive performance of non-magnetic thin metallic layers is investigated with the objective of designing convenient loads for domestic induction heating applications. Thin layers of copper and aluminum with thicknesses ranging from one hundred of nanometers to tens of micrometers are fabricated using the phase vapor deposition (PVD) technique. Performance of layers of different thicknesses and a ferromagnetic conventional material are compared by using the inductive resistance and the inductive efficiency as figures of merit.
{"title":"Design of efficient loads for domestic induction heating applications by means of non-magnetic thin metallic layers","authors":"J. Acero, C. Carretero, R. Alonso, J. Burdío","doi":"10.1109/APEC.2016.7468294","DOIUrl":"https://doi.org/10.1109/APEC.2016.7468294","url":null,"abstract":"The inductive performance of non-magnetic thin metallic layers is investigated with the objective of designing convenient loads for domestic induction heating applications. Thin layers of copper and aluminum with thicknesses ranging from one hundred of nanometers to tens of micrometers are fabricated using the phase vapor deposition (PVD) technique. Performance of layers of different thicknesses and a ferromagnetic conventional material are compared by using the inductive resistance and the inductive efficiency as figures of merit.","PeriodicalId":143091,"journal":{"name":"2016 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122575573","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 : 2016-03-20DOI: 10.1109/APEC.2016.7468355
M. Zadeh, Louis-Marie Saublet, R. Gavagsaz-Ghoachani, B. Nahid-Mobarakeh, S. Pierfederici, M. Molinas
Power electronics-based AC/DC microgrids are attractive for clean energy applications, and are the enabling technology for hybrid energy systems in the more electric transportation. In such hybrid energy systems, storage units like battery and supercapacitor (SC) are used to store the surplus energy and to regulate the DC bus voltage. In on-board electric power systems, the converter controlled loads act as constant power loads (CPLs), imposing fast dynamics to the system. In this paper, a simple power control approach is proposed to provide the energy management and to ensure the stable operation of the system in the presence of CPLs. Furthermore, a laboratory prototype is built in order to validate the performance of the controller and the energy management strategy. The control system is implemented on dSPACE real-time cards. The simulated control scenarios are then experimented with the hardware prototype.
{"title":"Energy management and stabilization of a hybrid DC microgrid for transportation applications","authors":"M. Zadeh, Louis-Marie Saublet, R. Gavagsaz-Ghoachani, B. Nahid-Mobarakeh, S. Pierfederici, M. Molinas","doi":"10.1109/APEC.2016.7468355","DOIUrl":"https://doi.org/10.1109/APEC.2016.7468355","url":null,"abstract":"Power electronics-based AC/DC microgrids are attractive for clean energy applications, and are the enabling technology for hybrid energy systems in the more electric transportation. In such hybrid energy systems, storage units like battery and supercapacitor (SC) are used to store the surplus energy and to regulate the DC bus voltage. In on-board electric power systems, the converter controlled loads act as constant power loads (CPLs), imposing fast dynamics to the system. In this paper, a simple power control approach is proposed to provide the energy management and to ensure the stable operation of the system in the presence of CPLs. Furthermore, a laboratory prototype is built in order to validate the performance of the controller and the energy management strategy. The control system is implemented on dSPACE real-time cards. The simulated control scenarios are then experimented with the hardware prototype.","PeriodicalId":143091,"journal":{"name":"2016 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122984049","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 : 2016-03-20DOI: 10.1109/APEC.2016.7468401
Yujin Jang, Jung-Kyu Han, Shin-Young Cho, G. Moon, Ji-Min Kim, H. Sohn
This paper proposes a novel system for smart bridge sensors that enables power and information data to be transferred simultaneously. For power transfer, the proposed system uses a half-bridge converter including a series-series compensator, and it provides power to the sensors through the concrete structure. For data transmission, the proposed system detects physical information of the smart bridge by sensing the voltage variation of the resonant capacitor in the transmitter. The proposed system thereby can reduce management cost of the smart bridge by using a wireless power transfer system for rechargeable batteries and eliminating the communication module for data transmission. A prototype system is validated by experiments. The efficiency is 43.6% with a distance of 300 mm and data transmission is properly conducted with a 1500bps data rate.
{"title":"Wireless power and data transfer system for smart bridge sensors","authors":"Yujin Jang, Jung-Kyu Han, Shin-Young Cho, G. Moon, Ji-Min Kim, H. Sohn","doi":"10.1109/APEC.2016.7468401","DOIUrl":"https://doi.org/10.1109/APEC.2016.7468401","url":null,"abstract":"This paper proposes a novel system for smart bridge sensors that enables power and information data to be transferred simultaneously. For power transfer, the proposed system uses a half-bridge converter including a series-series compensator, and it provides power to the sensors through the concrete structure. For data transmission, the proposed system detects physical information of the smart bridge by sensing the voltage variation of the resonant capacitor in the transmitter. The proposed system thereby can reduce management cost of the smart bridge by using a wireless power transfer system for rechargeable batteries and eliminating the communication module for data transmission. A prototype system is validated by experiments. The efficiency is 43.6% with a distance of 300 mm and data transmission is properly conducted with a 1500bps data rate.","PeriodicalId":143091,"journal":{"name":"2016 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117026104","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 : 2016-03-20DOI: 10.1109/APEC.2016.7467950
S. Nadarajan, S. K. Panda, B. Bhangu, A. Gupta
Condition monitoring of the Brushless Wound Field Synchronous Generator (BWFSG) is important as it is widely used in mission and safety critical applications such as marine vessels. The frequency signatures in rotor field current are well known indicators to detect and diagnose stator winding short circuits in synchronous generators, in addition the damper bars current could also be used for fault detection and diagnosis. However, BWFSG these currents are not accessible. Hence, it is important to use the mathematical model and state estimation techniques to estimate these parameters. This paper compares the performance of state estimation techniques such as the Extended Kalman Filter (EKF) and Particle Filter (PF) in estimating field current and damper bars current for stator winding fault detection and diagnosis. The experimental validation results confirmed that the performance of the EKF is better than that of the PF in terms of number of stator winding fault signatures extracted from estimating the field current and damper bars currents. Thus, the future work proposed to use the EKF for developing Model-Based Condition Monitoring (MBCM) system for the BWFSG.
{"title":"Comparing Extended Kalman Filter and Particle Filter for estimating field and damper bar currents in Brushless Wound Field Synchronous Generator for stator winding fault detection and diagnosis","authors":"S. Nadarajan, S. K. Panda, B. Bhangu, A. Gupta","doi":"10.1109/APEC.2016.7467950","DOIUrl":"https://doi.org/10.1109/APEC.2016.7467950","url":null,"abstract":"Condition monitoring of the Brushless Wound Field Synchronous Generator (BWFSG) is important as it is widely used in mission and safety critical applications such as marine vessels. The frequency signatures in rotor field current are well known indicators to detect and diagnose stator winding short circuits in synchronous generators, in addition the damper bars current could also be used for fault detection and diagnosis. However, BWFSG these currents are not accessible. Hence, it is important to use the mathematical model and state estimation techniques to estimate these parameters. This paper compares the performance of state estimation techniques such as the Extended Kalman Filter (EKF) and Particle Filter (PF) in estimating field current and damper bars current for stator winding fault detection and diagnosis. The experimental validation results confirmed that the performance of the EKF is better than that of the PF in terms of number of stator winding fault signatures extracted from estimating the field current and damper bars currents. Thus, the future work proposed to use the EKF for developing Model-Based Condition Monitoring (MBCM) system for the BWFSG.","PeriodicalId":143091,"journal":{"name":"2016 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128404384","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 : 2016-03-20DOI: 10.1109/APEC.2016.7468393
E. Fabrício, C. Jacobina, G. A. A. Carlos, M. Corrêa
This paper proposes a shunt active power filter (SAPF) composed of four H-bridge converters. Each of them is connected by means of isolation transformers. Compared to conventional topologies, the proposed converter permits reducing: dc-link voltage rating, grid current harmonic distortion and/or switching frequency (switching losses). A suitable control strategy to adjust the filter currents as well as dc-link voltage are presented. Two PWM strategies are designed to command the converter according to the reference voltage provided by the controllers. Simulation and experimental results are presented in order to validate theoretical approaches.
{"title":"Four H-bridge based shunt active power filter for three-phase four wire system","authors":"E. Fabrício, C. Jacobina, G. A. A. Carlos, M. Corrêa","doi":"10.1109/APEC.2016.7468393","DOIUrl":"https://doi.org/10.1109/APEC.2016.7468393","url":null,"abstract":"This paper proposes a shunt active power filter (SAPF) composed of four H-bridge converters. Each of them is connected by means of isolation transformers. Compared to conventional topologies, the proposed converter permits reducing: dc-link voltage rating, grid current harmonic distortion and/or switching frequency (switching losses). A suitable control strategy to adjust the filter currents as well as dc-link voltage are presented. Two PWM strategies are designed to command the converter according to the reference voltage provided by the controllers. Simulation and experimental results are presented in order to validate theoretical approaches.","PeriodicalId":143091,"journal":{"name":"2016 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124578856","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 : 2016-03-20DOI: 10.1109/APEC.2016.7468068
Y. Lei, C. Barth, Shibin Qin, Wen-Chuen Liu, Intae Moon, Andrew Stillwell, Derek Chou, T. Foulkes, Zichao Ye, Zitao Liao, R. Pilawa-Podgurski
High efficiency and compact single phase inverters are desirable in many applications such as solar energy harvesting and household appliances. This paper presents a 2 kW, 60 Hz, 450 VDC to 240 VRMS power inverter, designed and tested subject to the specifications of the Google/IEEE Little Box Challenge. The inverter features a 7-level flying capacitor multilevel converter, with low-voltage GaN switches operating at 120 kHz, the highest switching frequency to date at this power level. The inverter also includes an active buffer for twice-line-frequency power pulsation decoupling, which reduces the required capacitance by a factor of eight compared to conventional passive decoupling capacitor, while maintaining an efficiency above 99%. The inverter prototype is a self-contained box that achieves a high power density of 216 W/in3 and a peak overall efficiency of 97.6% while meeting the constraints including input current ripple, load transient, thermal and EMC specifications.
{"title":"A 2 kW, single-phase, 7-level, GaN inverter with an active energy buffer achieving 216 W/in3 power density and 97.6% peak efficiency","authors":"Y. Lei, C. Barth, Shibin Qin, Wen-Chuen Liu, Intae Moon, Andrew Stillwell, Derek Chou, T. Foulkes, Zichao Ye, Zitao Liao, R. Pilawa-Podgurski","doi":"10.1109/APEC.2016.7468068","DOIUrl":"https://doi.org/10.1109/APEC.2016.7468068","url":null,"abstract":"High efficiency and compact single phase inverters are desirable in many applications such as solar energy harvesting and household appliances. This paper presents a 2 kW, 60 Hz, 450 VDC to 240 VRMS power inverter, designed and tested subject to the specifications of the Google/IEEE Little Box Challenge. The inverter features a 7-level flying capacitor multilevel converter, with low-voltage GaN switches operating at 120 kHz, the highest switching frequency to date at this power level. The inverter also includes an active buffer for twice-line-frequency power pulsation decoupling, which reduces the required capacitance by a factor of eight compared to conventional passive decoupling capacitor, while maintaining an efficiency above 99%. The inverter prototype is a self-contained box that achieves a high power density of 216 W/in3 and a peak overall efficiency of 97.6% while meeting the constraints including input current ripple, load transient, thermal and EMC specifications.","PeriodicalId":143091,"journal":{"name":"2016 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124775513","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 : 2016-03-20DOI: 10.1109/APEC.2016.7468050
Yushi Liu, Ashish Kumar, Jie Lu, D. Maksimović, K. Afridi
This paper introduces a new design methodology for high-frequency resonant dc-dc converters utilizing the recently proposed impedance control network (ICN) converter architecture. This design methodology guarantees zero voltage switching (ZVS) and near zero current switching (ZCS) of all transistors across the entire operating range of the converter. As compared to previous ICN converter design techniques, the new methodology does not require frequency adjustment to achieve ZVS. In addition, it uses a rigorous analytical approach to minimize the phase lag required for ZVS, thus ensuring near-ZCS operation. The advantages gained from the proposed design methodology are validated using a prototype 1-MHz 90-W ICN resonant converter designed to operate over an input voltage range of 36 V to 60 V and output voltage of 1.8 V. This prototype ICN resonant converter employs a stacked inverter structure to further enhance performance.
本文介绍了一种利用阻抗控制网络(ICN)变换器结构设计高频谐振dc-dc变换器的新方法。这种设计方法保证了转换器整个工作范围内所有晶体管的零电压开关(ZVS)和近零电流开关(ZCS)。与以前的ICN转换器设计技术相比，新方法不需要频率调整来实现ZVS。此外，它使用严格的分析方法来最小化ZVS所需的相位滞后，从而确保接近zcs的运行。通过1 mhz 90 w ICN谐振变换器的原型验证了所提出设计方法的优势，该变换器的输入电压范围为36 V至60 V，输出电压为1.8 V。该原型ICN谐振变换器采用堆叠逆变器结构，进一步提高了性能。
{"title":"New design methdology for megahertz-frequency resonant dc-dc converters using impedance control network architecture","authors":"Yushi Liu, Ashish Kumar, Jie Lu, D. Maksimović, K. Afridi","doi":"10.1109/APEC.2016.7468050","DOIUrl":"https://doi.org/10.1109/APEC.2016.7468050","url":null,"abstract":"This paper introduces a new design methodology for high-frequency resonant dc-dc converters utilizing the recently proposed impedance control network (ICN) converter architecture. This design methodology guarantees zero voltage switching (ZVS) and near zero current switching (ZCS) of all transistors across the entire operating range of the converter. As compared to previous ICN converter design techniques, the new methodology does not require frequency adjustment to achieve ZVS. In addition, it uses a rigorous analytical approach to minimize the phase lag required for ZVS, thus ensuring near-ZCS operation. The advantages gained from the proposed design methodology are validated using a prototype 1-MHz 90-W ICN resonant converter designed to operate over an input voltage range of 36 V to 60 V and output voltage of 1.8 V. This prototype ICN resonant converter employs a stacked inverter structure to further enhance performance.","PeriodicalId":143091,"journal":{"name":"2016 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129647595","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 : 2016-03-20DOI: 10.1109/APEC.2016.7468151
Suxuan Guo, Liqi Zhang, Yang Lei, Xuan Li, Wensong Yu, A. Huang
With the commercial introduction of wide bandgap power devices such as Silicon Carbide (SiC) and Gallium Nitride (GaN) in the last few years, the high power and high frequency power electronics applications have gained more attention. The fast switching speed and high temperature features of SiC MOSFET break the limit of the traditional silicon MOSFET. However, the EMI problem under high dI/dt and dV/dt is an unneglectable problem. The overshoot and oscillation on drain-source voltage and gating signal could cause breakdown of the switches. This paper proposes a 1200V integrated SiC MOSFET module. With the ultra-fast gate driver integrated with the SiC MOSFET, the parasitic inductance and capacitance could be reduced dramatically, which accordingly suppress the EMI problem caused by the parasitic parameters. Thus zero gate resistance could be adopted in the module to further increase the switching speed. The switching performance of the integrated SiC module is shown better than the discrete package device. The switching loss of the SiC MOSFET module is measured by the inverter level measurement and composition method. Zero switching loss could be achieved when the drain current is lower than a critical value. The module has been tested at 1.5MHz and 3.38MHz switching frequency to prove its high speed capability. For isolated topology applications, the impact of high frequency on the power density and efficiency is discussed in this paper.
{"title":"Design and application of a 1200V ultra-fast integrated Silicon Carbide MOSFET module","authors":"Suxuan Guo, Liqi Zhang, Yang Lei, Xuan Li, Wensong Yu, A. Huang","doi":"10.1109/APEC.2016.7468151","DOIUrl":"https://doi.org/10.1109/APEC.2016.7468151","url":null,"abstract":"With the commercial introduction of wide bandgap power devices such as Silicon Carbide (SiC) and Gallium Nitride (GaN) in the last few years, the high power and high frequency power electronics applications have gained more attention. The fast switching speed and high temperature features of SiC MOSFET break the limit of the traditional silicon MOSFET. However, the EMI problem under high dI/dt and dV/dt is an unneglectable problem. The overshoot and oscillation on drain-source voltage and gating signal could cause breakdown of the switches. This paper proposes a 1200V integrated SiC MOSFET module. With the ultra-fast gate driver integrated with the SiC MOSFET, the parasitic inductance and capacitance could be reduced dramatically, which accordingly suppress the EMI problem caused by the parasitic parameters. Thus zero gate resistance could be adopted in the module to further increase the switching speed. The switching performance of the integrated SiC module is shown better than the discrete package device. The switching loss of the SiC MOSFET module is measured by the inverter level measurement and composition method. Zero switching loss could be achieved when the drain current is lower than a critical value. The module has been tested at 1.5MHz and 3.38MHz switching frequency to prove its high speed capability. For isolated topology applications, the impact of high frequency on the power density and efficiency is discussed in this paper.","PeriodicalId":143091,"journal":{"name":"2016 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129855341","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 : 2016-03-20DOI: 10.1109/APEC.2016.7468024
Byeong-Heon Kim, S. Sul
In this paper, the methodology to analyze Non-Detection Zone (NDZ) of islanding detection algorithm for multiple Power Conditioning Systems (PCSs) connected to grid is proposed. The PCSs with renewable energy source or battery energy storage system are equipped with anti-islanding functionality and the method using frequency positive-feedback is one of the most popular methods to detect islanding condition. Because it is figured out that the positive feedback of grid frequency is only valid on reactive current, not the phase of current or active current, the reactive power according to the frequency drift algorithm is only considered for NDZ analysis in the proposed analysis. Additionally, the reactive power component by frequency drift anti-islanding can be linearized in normal operation range of grid frequency. By incorporated with this concept, Equivalent Single PCS (ESPCS), which equivalently supplies whole reactive current of multiple PCSs, is proposed and this could emulate the operation of multiple parallel PCSs without loss of the detection capability. The NDZ is analyzed by ESPCS and is compared to the NDZ of parallel PCSs. Through the computer simulation and hardware experiments, it is confirmed that NDZ based on ESPCS and operation dynamics is well matched to those of multiple PCSs.
{"title":"Analysis of Non Detection Zone for multiple distributed PCS based on Equivalent Single PCS using reactive power approach","authors":"Byeong-Heon Kim, S. Sul","doi":"10.1109/APEC.2016.7468024","DOIUrl":"https://doi.org/10.1109/APEC.2016.7468024","url":null,"abstract":"In this paper, the methodology to analyze Non-Detection Zone (NDZ) of islanding detection algorithm for multiple Power Conditioning Systems (PCSs) connected to grid is proposed. The PCSs with renewable energy source or battery energy storage system are equipped with anti-islanding functionality and the method using frequency positive-feedback is one of the most popular methods to detect islanding condition. Because it is figured out that the positive feedback of grid frequency is only valid on reactive current, not the phase of current or active current, the reactive power according to the frequency drift algorithm is only considered for NDZ analysis in the proposed analysis. Additionally, the reactive power component by frequency drift anti-islanding can be linearized in normal operation range of grid frequency. By incorporated with this concept, Equivalent Single PCS (ESPCS), which equivalently supplies whole reactive current of multiple PCSs, is proposed and this could emulate the operation of multiple parallel PCSs without loss of the detection capability. The NDZ is analyzed by ESPCS and is compared to the NDZ of parallel PCSs. Through the computer simulation and hardware experiments, it is confirmed that NDZ based on ESPCS and operation dynamics is well matched to those of multiple PCSs.","PeriodicalId":143091,"journal":{"name":"2016 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130330935","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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