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2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)最新文献

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Hybrid Control Strategy for DAB-LLC Sigma Converter DAB-LLC变换器的混合控制策略
2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2021-06-28 DOI: 10.1109/PEDG51384.2021.9494259
Zhiwei Chen, W. Wang, Jie Chen, Qicai Ren, Alian Chen, Tong Liu
{"title":"Hybrid Control Strategy for DAB-LLC Sigma Converter","authors":"Zhiwei Chen, W. Wang, Jie Chen, Qicai Ren, Alian Chen, Tong Liu","doi":"10.1109/PEDG51384.2021.9494259","DOIUrl":"https://doi.org/10.1109/PEDG51384.2021.9494259","url":null,"abstract":"DAB-LLC sigma converter has been an attractive topology, which combines the high efficiency of LLC and the high controllability of DAB. However, traditional PI controller manages output voltage/power by adjusting the phase shift angle of DAB and allows LLC to operate in an open loop mode, which leads to poor transient response. In this paper, an improved simplified optimal trajectory controller (SOTC) suitable for LLC in sigma converter is investigated. And then a new hybrid control strategy is proposed, which can not only control DAB by PI controller, but also control LLC by improved SOTC at transient. The hybrid control strategy compensates the load current and enhances the intrinsic voltage feedback of the sigma converter. Furthermore, it reduces current overshoot and improves transient response without reducing the efficiency. Finally, a prototype rated at 1 kW is built and tested, and experimental results verified the effectiveness of proposed strategy.","PeriodicalId":374979,"journal":{"name":"2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129824707","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
Model Predictive Control of Multi-input Solar-Wind Hybrid System in DC Community with Battery Back-up 具有蓄电池备电的直流小区多输入太阳能-风混合系统模型预测控制
2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2021-06-28 DOI: 10.1109/PEDG51384.2021.9494234
Sumana Ghosh, Jitesh Chandra Barman, I. Batarseh
{"title":"Model Predictive Control of Multi-input Solar-Wind Hybrid System in DC Community with Battery Back-up","authors":"Sumana Ghosh, Jitesh Chandra Barman, I. Batarseh","doi":"10.1109/PEDG51384.2021.9494234","DOIUrl":"https://doi.org/10.1109/PEDG51384.2021.9494234","url":null,"abstract":"This paper proposes a multi-input hybrid DC microgrid system to combine renewable energy sources like photovoltaics (PV), wind with storage by applying fast adaptive controls based on the Model Predictive Control (MPC) method. The proposed MPC approach will be based on Maximum Power Point Tracking (MPPT) approach, which is used to regulate the DC-DC converters connecting Photovoltaic (PV) sources. Whereas, the wind energy module uses tip-speed ratio based MPPT method for switching control of converter. A back-to-back converter is added to improve the current sharing between the PV panels and wind farm. Also, to enhance the system reliability due to current sharing under varying and unpredictable weather conditions, droop based MPC is implemented to fix the dc bus voltage. The state of charge (SOC) controlled storage unit gives reliability to sustain peak load demands in the proposed DC microgrid system.","PeriodicalId":374979,"journal":{"name":"2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126442548","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
Generator Parameter Identification Using Time Series Model and PMU Measurements 使用时间序列模型和PMU测量的发电机参数识别
2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2021-06-28 DOI: 10.1109/PEDG51384.2021.9494219
Tinghui Zhou, Ligang Zhao, Chao Hong, Guanbiao Huang, Hongyue Zhen, Changxiang Wang, Xiaoshan Wu, C. Jing
{"title":"Generator Parameter Identification Using Time Series Model and PMU Measurements","authors":"Tinghui Zhou, Ligang Zhao, Chao Hong, Guanbiao Huang, Hongyue Zhen, Changxiang Wang, Xiaoshan Wu, C. Jing","doi":"10.1109/PEDG51384.2021.9494219","DOIUrl":"https://doi.org/10.1109/PEDG51384.2021.9494219","url":null,"abstract":"Dynamic simulation is one of the most important tools for the operation and planning of electric power systems. Accuracy of the dynamic simulation results are directly determined by the accuracy of the equipment model, especially the models of synchronous generators. This paper proposes a time-series-based synchronous generator parameter estimation technique using phasor measurement unit (PMU) data. The generator electromechanical dynamics related parameters are estimated which include generator inertia constant, speed regulation constant, and time constant of the turbine-governor, etc. The classical generator model and swing equation are transformed into a time series model whose parameters can be estimated in an indirect way using linear system parameter identification technology. Once the parameters for the time series model are calculated, the generator parameters can be recovered from the time series model. Simulation results demonstrate the effectiveness of the proposed methodology.","PeriodicalId":374979,"journal":{"name":"2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"40 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122725523","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
Mode Transition for Increased Voltage Gain Range of a 4-Switch DC-DC Converter with Tri-State and Single Duty Cycle Control 三态单占空比控制4开关DC-DC变换器电压增益范围增大的模式转换
2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2021-06-28 DOI: 10.1109/PEDG51384.2021.9494256
Qiong Wang, A. Choubey, L. Lopes
{"title":"Mode Transition for Increased Voltage Gain Range of a 4-Switch DC-DC Converter with Tri-State and Single Duty Cycle Control","authors":"Qiong Wang, A. Choubey, L. Lopes","doi":"10.1109/PEDG51384.2021.9494256","DOIUrl":"https://doi.org/10.1109/PEDG51384.2021.9494256","url":null,"abstract":"The 4-switch bi-directional DC-DC converter operating with a tri-state logic can be used as a fast-acting power interface for energy storage devices in DC grids. By making the duration of one of the three states fixed, single duty cycle control for the injected current is possible. However, the range of voltage gains (Vo/Vin) in Boost and Buck-Boost modes is reduced, what precludes its use for interfacing supercapacitors (SCs), operating with half to rated voltages, to DC grids. This paper presents this issue and proposes a solution based on the dynamic transition between modes of operation as the input voltage varies. Simulation results for a supercapacitor connected to a DC grid through the 4-switch converter operating with the basic and the improved tri-state control logic are presented to demonstrate the benefits of the proposed technique.","PeriodicalId":374979,"journal":{"name":"2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127697808","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
Electrical Properties of Optically Triggered SiC JFET for Power Electronic Application 用于电力电子的光触发SiC JFET的电学特性
2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2021-06-28 DOI: 10.1109/PEDG51384.2021.9494204
N. Shrestha, S. Mazumder, L. Voss
{"title":"Electrical Properties of Optically Triggered SiC JFET for Power Electronic Application","authors":"N. Shrestha, S. Mazumder, L. Voss","doi":"10.1109/PEDG51384.2021.9494204","DOIUrl":"https://doi.org/10.1109/PEDG51384.2021.9494204","url":null,"abstract":"A novel high voltage optically triggered SiC Junction Field Effect Transistor (JFET) configuration is proposed. The electrical and switching characteristics of the device is studied theoretically by solving the experimentally validated transport and physical models and do analysis experimentally. The optical signal trigger low-voltage optically controlled GaAs switch, called optically triggered power transistor (OTPT), is designed for voltage rating of nearly 70 V. The OTPT is connected in series with normally-on SiC JFET to handle the current switching. The simulation result found that the optically triggered SiC JFET operated with very high blocking voltage of 1200 V and rate of current rise (di/dt) of 25 A/ns at 500 V drain bias with significantly low leakage current of 10 μA. Additionally, it is found that the current of the optically triggered JFET increases with the increase of optical power of illuminated laser. Furthermore, the experimental outcome of turn on and turn off time of the device studied at comparatively low drain bias (200 V) are 95 nm and 740 ns respectively. Finally, very high breakdown voltage and high rate of current rise leads the SiC optical JFET a potential candidate for high power switching application.","PeriodicalId":374979,"journal":{"name":"2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127807262","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
Data Center Isolated Parallel Ring Bus Differential Protection Scheme 数据中心隔离并联环形母线差动保护方案
2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2021-06-28 DOI: 10.1109/PEDG51384.2021.9494226
Taosha Jiang, L. Qi, Yuzhi Zhang, H. Suryanarayana, Mohammed Alzamli, H. Handlin, S. Colombi
{"title":"Data Center Isolated Parallel Ring Bus Differential Protection Scheme","authors":"Taosha Jiang, L. Qi, Yuzhi Zhang, H. Suryanarayana, Mohammed Alzamli, H. Handlin, S. Colombi","doi":"10.1109/PEDG51384.2021.9494226","DOIUrl":"https://doi.org/10.1109/PEDG51384.2021.9494226","url":null,"abstract":"UPSs are used in data centers and other critical power applications for power conditioning and back-up. In addition, to ensure reliability of the data center, a redundant architecture is needed. This increases capital expenses and decreases the utilization rate. One approach is to use the isolated parallel ring bus (IPRB) architecture with static UPS. This features load sharing with active and reactive power transferred through choke inductors to the ring bus. This architecture maximizes the utilization rate while maintaining the reliability of the system. The protection scheme in this IPRB is critical to guarantee the operation in case of any fault. In this paper, the differential protection scheme of the IPRB is explained with simulation and field-testing results. The differential protection can effectively identify and isolate faults to ensure uninterrupted service to the load.","PeriodicalId":374979,"journal":{"name":"2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114544633","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
Effect of Low Pass Filter in Governor Model of Virtual Synchronous Generator 低通滤波器对虚拟同步发电机调速器模型的影响
2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2021-06-28 DOI: 10.1109/PEDG51384.2021.9494262
A. Sheir, V. Sood
{"title":"Effect of Low Pass Filter in Governor Model of Virtual Synchronous Generator","authors":"A. Sheir, V. Sood","doi":"10.1109/PEDG51384.2021.9494262","DOIUrl":"https://doi.org/10.1109/PEDG51384.2021.9494262","url":null,"abstract":"In a typical ac power system, the grid frequency reflects the balance between grid total power generation and its total power consumption. With more renewable energy sources fed through power electronics converters (PECs) connected to the grid, their controllers are adapted to incorporate virtual inertia loops to help maintain the grid inertia originally provided by synchronous generators (SG). Such converters are referred to as virtual synchronous generators (VSGs). Virtual synchronous generator-based control consists of three main blocks: governor model, virtual inertia control loop and automatic voltage regulator. Among them, governor model block is mostly overlooked. This work investigates the effect of its low pass filter (LPF) on microgrid (MG) large signal stability. A mathematical model of a virtual inertia controller, including LPF, is first introduced. As the model becomes non-autonomous, this study relies on a geometrical approach to demonstrate its impact rather than analytical one. A case study of a LPF with different time delays (bandwidth) is conducted to show its impact on VSG large signal dynamics.","PeriodicalId":374979,"journal":{"name":"2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117160051","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
Modeling and Analysis of Peak-Current-Controlled Differential Mode Ćuk Inverter 峰值电流控制差分模式Ćuk逆变器的建模与分析
2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2021-06-28 DOI: 10.1109/PEDG51384.2021.9494167
Congbo Bao, Shantanu Guptam, S. Mazumder
{"title":"Modeling and Analysis of Peak-Current-Controlled Differential Mode Ćuk Inverter","authors":"Congbo Bao, Shantanu Guptam, S. Mazumder","doi":"10.1109/PEDG51384.2021.9494167","DOIUrl":"https://doi.org/10.1109/PEDG51384.2021.9494167","url":null,"abstract":"Peak current mode (PCM) control exhibits superiority over voltage-mode-control (VMC) in aspect of overcurrent protection, magnetic current saturation elimination and fast transient response, etc., and thus PCM-based control scheme finds wide application in numerous areas. In this paper, operation modes, modeling, analysis, and control design for both are presented for differential mode Ćuk inverter (DMCI). The comparison between two control schemes reveals that PCM-based control has better stability and is easier to control than VMC-based control. Next, Matlab/Simulink simulation is implemented to compare and evaluate the VMC-based control and PCM-based control performance. The simulation results show that PCM-based DMCI has 1.01% output total harmonic distortion(THD) versus 2.66% for VMC-based control. At the same time, the power device voltage stress almost maintains at the same level. Moreover, the PCM-based DMCI possesses instantaneous startup tracking while the VMC-based control has 0.07 s tracking lag. Further, the DMCI performance based on two control regimes is compared when 50% load step change and 10% input step change occur. All comparisons verify that DMCI with PCM-based control outperforms that of its VMC-based counterpart.","PeriodicalId":374979,"journal":{"name":"2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117304006","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: 9
Improved Ant Lion Algorithm for orderly charging of electric vehicles 改进的蚂蚁狮子算法用于电动汽车有序充电
2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2021-06-28 DOI: 10.1109/PEDG51384.2021.9494274
Xuanhui Peng, Caixue Chen, Tuo Zheng, Wendong Tang, Zhigang Xiong, Gang Ouyang
{"title":"Improved Ant Lion Algorithm for orderly charging of electric vehicles","authors":"Xuanhui Peng, Caixue Chen, Tuo Zheng, Wendong Tang, Zhigang Xiong, Gang Ouyang","doi":"10.1109/PEDG51384.2021.9494274","DOIUrl":"https://doi.org/10.1109/PEDG51384.2021.9494274","url":null,"abstract":"In order to reduce the instability of power grid caused by disorderly charging of large-scale electric vehicles in the future, an ordered charging optimization model is established, which aims at the minimum peak and valley difference of power grid side and the lowest charge cost of user side. Meanwhile, to solve the objective function efficiently and quickly, ant lion optimization with Levy flight and self-adaptive strategy (LSALO) is proposed for charging the electric vehicle. The introduction of adaptive boundary strategy increases population diversity, and Levy flight is conducive to avoiding local optimization and speeding up global convergence. The simulation results show that compared with particle swarm optimization (PSO) and ant lion optimization (ALO), LSALO has the highest convergence accuracy and optimization accuracy, and has strong advantages in the optimization of the orderly charging of electric vehicles.","PeriodicalId":374979,"journal":{"name":"2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126045537","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
Stability Analysis and Capacity Distribution of Multi-paralleled Current-Controlled Inverters and Voltage-Controlled VSGs Grid-Connected System 电流控制逆变器与电压控制VSGs并联并网系统的稳定性分析与容量分配
2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2021-06-28 DOI: 10.1109/PEDG51384.2021.9494266
Zixuan Guo, Xing Zhang, Ming Li, Jilei Wang, Xinxin Fu, Feng Han
{"title":"Stability Analysis and Capacity Distribution of Multi-paralleled Current-Controlled Inverters and Voltage-Controlled VSGs Grid-Connected System","authors":"Zixuan Guo, Xing Zhang, Ming Li, Jilei Wang, Xinxin Fu, Feng Han","doi":"10.1109/PEDG51384.2021.9494266","DOIUrl":"https://doi.org/10.1109/PEDG51384.2021.9494266","url":null,"abstract":"The large-scale access of current-controlled inverters (CCIs) has caused weak grids and a series of instability issues. On the contrary, because of can actively support the weak grid, voltage-controlled VSGs (VC-VSGs) have become a potential choice for high-penetration renewable energy power generation. Multi-paralleled CCI and VC-VSG grid-connected systems (MCVGSs) are account for an increasing proportion of the distributed generation systems. This paper focused on the influence of short-circuit capacity ratio (SCR) and VC-VSG capacity ratio (VSGCR) on the MCVGS small-signal stability. Then, this paper proposes an SCR-based VC-VSG capacity distribution method, which can determine the VC-VSG capacity required to maintain a certain MCVGS stability margin in a weak grid. Finally, simulation results validate the analysis and the proposed method.","PeriodicalId":374979,"journal":{"name":"2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129845952","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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