检索结果-内蒙古大学图书馆

IEEE Green Technologies Conference (IEEE-Green)

作者： Ola Ali Osama A. Mohammed Department of Electrical and Computer Engineering Energy Systems Research Laboratory Florida International University Miami FL USA

ISBN: (数字)9798331520182

ISBN: (纸本)9798331520199

This paper presents a communication emulation model for enhancing the efficiency of multi-microgrid (MMG) networks, employing Network Simulator 3 (ns3). MMG systems require robust communication frameworks for coordination, particularly under varying traffic conditions. The introduced model accommodates multiple local area networks (LANs) that support efficient communication across multiple autonomous AC microgrids. The developed model facilitates seamless bidirectional information exchange between the microgrids' local controllers and the MMG control center (MMGCC), employing TCP/IP protocol to ensure high data transmission integrity and low latency. A detailed design in C++ is demonstrated, including the configuration of the communication nodes, topology, communication links, and quality of service (QoS) analysis. The network performance is rigorously assessed across low and high traffic conditions, with performance metrics such as throughput, delay, and percentage packet loss at each node. Results confirm the effectiveness of the introduced model in sustaining minimal packet loss, high throughput, and low delays under dynamic operating scenarios. These findings establish the developed model as a viable solution for meeting the real-time communication requirements of MMG energy management systems.

关键词： Emulation Packet loss TCPIP Quality of service Microgrids C++ languages Throughput Real-time systems Delays Load modeling

来源：评论

学校读者我要写书评

暂无评论

Optimized Design of Sub-Harmonic Synchronous Machines

引用

IEEE Transactions on Magnetics 2025年

作者： Sajjad Hossain Rafin, M. Ali, Qasim Hussein, Hossam Mohammed, Osama A. Florida International University Energy Systems Research Laboratory Department of Electrical and Computer Engineering MiamiFL33174 United States Sukkur IBA University Department of Electrical Engineering Sukkur Pakistan

This paper presents an optimized design approach for sub-harmonic synchronous machines (SHSMs) to minimize torque ripple and improve performance for high-power electric vehicle applications. The proposed design incorporates a novel rotor harmonic winding configuration and utilizes advanced skewing techniques to achieve optimal spatial distribution of magnetic forces. Using Ansys Maxwell software, finite element analysis (FEA) was conducted on 8-pole, 48-slot SHSMs with a rated output of 1.3 kW and 900 rpm. Compared to earlier designs, the optimized 2-layer and 3-layer SHSMs demonstrated significant reductions in torque ripple—83.94% and 86.84%, respectively. This improvement is attributed to the uniform distribution of harmonic windings and carefully calibrated rotor skewing, both of which enhance spatial efficiency and magnetic field uniformity across the rotor. These configurations achieve lower torque ripple and maintain high efficiency and competitive average torque output, making them suitable alternatives to conventional wound rotor synchronous machines (WRSMs) and permanent magnet synchronous motors (PMSMs). The findings validate the potential of the optimized SHSMs as high-performance, brushless solutions for electric vehicle propulsion, contributing to advancements in synchronous machine design and sustainable transportation technologies. © 1965-2012 IEEE.

关键词： Permanent magnets

来源：评论

学校读者我要写书评

暂无评论

Renewable hydrogen blending into urban natural gas grids with power-to-gas: A techno-economic assessment for Greece

引用

International Journal of Hydrogen Energy 2025年 139卷 380-395页

作者： Hercules Koutalidis Sotiris Pelekis Eugenia Skepetari Christos Ntanos Evangelos Karakolis Ariadni Michalitsi-Psarrou Afroditi Blika Dimitris Askounis Decision Support Systems Laboratory School of Electrical and Computer Engineering National Technical University of Athens Iroon Polytechniou 9 Athens 15773 Attica Greece

Renewable hydrogen can be produced with power-to-Gas (PtG) systems, using renewable energy sources (RES), with minimal Greenhouse Gas (GHG) emissions. With this paper, the authors aim to provide clear insights into optimal PtG systems’ techno-economic performance, in the case of renewable hydrogen blending into gas grids such as that of the city of Athens. Two different production methods are investigated, namely one in which the investor owns the required energy generation units, and one in which the required energy is procured from independent producers. Seven different underlying parametric scenarios are investigated, reflecting possible future costs developments according to scientific literature. The results show Levelized Costs of produced hydrogen ranging from 2.14 to 5 €/kg. Production through own energy units is currently overall more economical. Energy and electrolysis costs comprise most of the costs, indicating the necessity for considerable price reductions for green hydrogen to become competitive.

关键词： Green hydrogen power-to-Gas Electrolysis Renewable energy sources power Purchase Agreement Natural gas

来源：评论

学校读者我要写书评

暂无评论

Resilient Operation of DC Standalone Microgrids: Experimental Validation of Hybrid RNN-PI Control for Pulse Load Management

Resilient Operation of DC Standalone Microgrids: Experimenta...

引用

IEEE Green Technologies Conference (IEEE-Green)

作者： Ahmed Aghmadi Osama A. Mohammed Department of Electrical and Computer Engineering Energy Systems Research Laboratory Florida International University Miami FL USA

ISBN: (数字)9798331520182

ISBN: (纸本)9798331520199

Effective energy storage system (ESS) management is critical for enhancing the performance of standalone DC microgrids, particularly when integrating renewable energy sources such as photovoltaic (PV) or wind systems. This research describes a new hybrid control technique to improve DC microgrid operations' efficiency and resiliency, especially when handling critical loads. This research presents a hybrid closed-loop control technique that uses Recurrent Neural Networks (RNNs) and Proportional-Integral (PI) controllers to address the complex issues of dynamic load situations and transient disturbances. The RNN evaluates voltage errors to generate accurate reference currents, which the PI controllers then adjust to improve the performance of the bidirectional converter. Unlike standard PI-PI controls, our hybrid approach is particularly effective at regulating pulsed power loads (PPLs) and enhancing system response to transitory situations. The experimental results show that the RNN-PI control scheme significantly improves voltage regulation and transient responsiveness, exceeding conventional performance and resilience techniques. This approach provides a convincing solution for enhancing microgrid systems' stability and efficiency in various real-world applications.

关键词： Renewable energy sources Recurrent neural networks PI control Voltage fluctuations Microgrids Robustness Voltage control Transient analysis Standards Resilience

来源：评论

学校读者我要写书评

暂无评论

Extraction of Common Mode Parasitic Capacitance in Balance Filter for The Prediction of EMI Noise Suppression

Extraction of Common Mode Parasitic Capacitance in Balance F...

引用

Annual IEEE Conference on Applied power Electronics Conference and Exposition (APEC)

作者： Qiuzhe Yang Xingyu Chen Zijian Wang Qiang Li Bradley Department of Electrical and Computer Engineering Center for Power Electronics Systems Virginia Polytechnic and State University Blacksburg VA USA

ISBN: (数字)9798331516116

ISBN: (纸本)9798331516123

This paper proposes a new method to extract the common mode parasitic capacitance in the balance network for the totem-pole converter. Filter concept is applied to the balance network to predict the EMI noise with the extracted parasitic capacitance. With the proposed method, the EMI noise prediction matches the experiment very well within 30MHz.

关键词： Matched filters Voltage measurement Noise Electromagnetic interference Noise reduction Switches Predictive models power electronics Noise measurement Parasitic capacitance

来源：评论

学校读者我要写书评

暂无评论

II-NVM: Enhancing Map Accuracy and Consistency With Normal Vector-Assisted Mapping

引用

IEEE Robotics and Automation Letters 2025年第6期10卷 5465-5472页

作者： Zhao, Chengwei Li, Yixuan Jian, Yina Xu, Jie Wang, Linji Ma, Yongxin Jin, Xinglai Xi'an Jiaotong University Institute of Artificial Intelligence and Robotics Xi'an710049 China Hangzhou Qisheng Intelligent Techology Company Ltd Hangzhou311217 China Columbia University in the City of New York Department of Computer Science New YorkNY10027 United States Harbin Institute of Technology State Key Laboratory of Robotics and Systems Harbin150001 China Nanyang Technological University School of Electrical and Electronic Engineering 639798 Singapore School of Electrical and Electronic Engineering Nanyang Technological University 639798 Singapore

SLAM technology plays a crucial role in indoor mapping and localization. A common challenge in indoor environments is the "double-sided mapping issue", where closely positioned walls, doors, and other surfaces are mistakenly identified as a single plane, significantly hindering map accuracy and consistency. To addressing this issue this letter introduces a SLAM approach that ensures accurate mapping using normal vector consistency. We enhance the voxel map structure to store both point cloud data and normal vector information, enabling the system to evaluate consistency during nearest neighbor searches and map updates. This process distinguishes between the front and back sides of surfaces, preventing incorrect point-to-plane constraints. Moreover, we implement an adaptive radius KD-tree search method that dynamically adjusts the search radius based on the local density of the point cloud, thereby enhancing the accuracy of normal vector calculations. To further improve real-time performance and storage efficiency, we incorporate a Least Recently Used (LRU) cache strategy, which facilitates efficient incremental updates of the voxel map. The code is released as open-source and validated in both simulated environments and real indoor scenarios. Experimental results demonstrate that this approach effectively resolves the "double-sided mapping issue" and significantly improves mapping precision. Additionally, we have developed and open-sourced the first simulation and real-world dataset specifically tailored for the "double-sided mapping issue". © 2016 IEEE.

关键词： Mapping

来源：评论

学校读者我要写书评

暂无评论

Finite-control-set economic model predictive control for a DC/AC inverter

引用

Control engineering Practice 2025年 163卷

作者： Kong, Xiaobing Zhang, Pengyu Ma, Lele Zhu, Zheng Liu, Xiangjie Lee, Kwang Y. Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing102206 China The Department of Electrical and Computer Engineering Baylor University Waco TX 76798 United States

Finite-control-set model predictive control (FCS-MPC) is an effective approach for controlling modern power electronics. The three-level sparse neutral point clamped inverter (3L-SNPCI) fulfills the task of converting DC power into the desired three-phase AC power in high-renewable-penetration power systems. The stable and economic operation of the 3L-SNPCI is crucial to the security and reliability of renewable energy grid connection. Controlling of 3L-SNPCI is quite challenging, due to the strong nonlinearity and the discrete feasible region caused by the finite control set. In this paper, a stable economic model predictive control scheme is developed to achieve the key tasks of current tracking, neutral point voltage balance, and inverter economic performance by directly incorporating the economic indices into the controller design. The non-convex optimization problem caused by the inverter nonlinearity is transformed into a convex one with linear inequality constraints by employing the Big-M method. The bounded stability is indirectly guaranteed with the dynamic of the inverter control system approximating that of a stabilized continuous linear time-invariant system sharing the same parameters. Simulation and experiment concerning both the steady-state and transient-state conditions with different disturbance are presented to show the effectiveness and robustness of the proposed controller. © 2025

关键词： Predictive control systems

来源：评论

学校读者我要写书评

暂无评论

Performance testing of a solar PV system controlled as a virtual synchronous machine to verify grid code compliance

Performance testing of a solar PV system controlled as a vir...

引用

22nd IET International Conference on AC and DC power Transmission (ACDC Global 2025)

作者： Randupama T. Gunasekara Dharshana Muthumuni Shaahin Filizadeh Power Systems Technology Centre Manitoba Hydro International Winnipeg Canada Department of Electrical and Computer Engineering University of Manitoba Winnipeg Canada

ISBN: (数字)9781837242634

This paper presents a comprehensive analysis of the functional response verification of an inverter operating as a Virtual Synchronous Machine (VSM) in grid-following mode. The proposed VSM control strategy addresses critical technical challenges associated with integrating Inverter-Based Resources (IBRs) into weak power grids. Modern grid codes outline essential performance requirements of IBRs, including voltage regulation, reactive power support, frequency control, and resilience during grid disturbances. An electromagnetic transient (EMT)-domain based testing procedure (generally referred to as Model Quality Tests – MQT) of a 50 MVA solar PV plant controlled as a VSM is presented. These tests ensure accurate model representation and IBR’s compliance with regulatory standards. Furthermore, the paper explores the adaptability of VSM controls in delivering essential functional features, such as inertial and fast frequency response, to enhance grid stability and operational efficiency. The test results highlight the ability of inverters operating as VSMs to meet essential grid code requirements, thereby enabling the reliable integration of renewable energy sources into power systems and supporting the transition toward sustainable energy.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Single-Stage 48V-to-1V Regulator with a Half-Turn Transformer and Current-Doubler Rectifier

Single-Stage 48V-to-1V Regulator with a Half-Turn Transforme...

引用

Annual IEEE Conference on Applied power Electronics Conference and Exposition (APEC)

作者： Xinmiao Xu Qiang Li Department of Electrical and Computer Engineering Center for Power Electronics Systems Virginia Polytechnic Institute and State University Blacksburg VA United States

ISBN: (数字)9798331516116

ISBN: (纸本)9798331516123

Single-stage 48V-to-1V regulated solutions for high-performance processors become increasingly popular. This paper presents a full-bridge transformer-based buck converter with the current-doubler rectifier. The transformer adopts a half-turn winding structure for reduced resistance and leakage inductance. Operating principles of the converter with the half-turn transformer and the converter’s optimized printed circuit board layout are illustrated. Synchronous rectifiers are integrated in high-frequency loops and are treated carefully to reduce parasitic-inductor-induced loss. With the help of recent advances in gallium nitride (GaN) and silicon transistors, a 48V-to-1.8V GaN-based prototype switching at 700 kHz is constructed, which achieves 95.34% peak efficiency, 92.79% full-load efficiency (including gating loss) and 576 W/in 3 power density with 50-A current per phase. The same hardware achieves 94.00% peak efficiency and 89.75% full-load efficiency with 55-A current per phase in 48V-to-1.0V conversion. Experimental results with 54-V input are also included in this paper, demonstrating the great potential of the single-stage solution for future data centers.

关键词： Inductance Regulators Switching frequency Windings Layout Printed circuits Rectifiers Prototypes Transformers Gallium nitride

来源：评论

学校读者我要写书评

暂无评论

Dynamic Modeling and Fault Response Analysis of SMR-Integrated power Grid

Dynamic Modeling and Fault Response Analysis of SMR-Integrat...

引用

IEEE Green Technologies Conference (IEEE-Green)

作者： Javier Bejarano Paras Mandal Department of Electrical and Computer Engineering Power and Renewable Energy Systems (PRES) Lab. The University of Texas at El Paso TX USA

ISBN: (数字)9798331520182

ISBN: (纸本)9798331520199

Small Modular Reactors (SMRs) are an emerging technology with load-following capabilities, offering significant potential for enhancing grid stability and resilience. This paper presents the development of an SMR model by replacing an existing generator in the IEEE 39-bus system with a synchronous machine round rotor configured to reflect the operational characteristics of an SMR. The paper focuses on analyzing the dynamic fault response of the SMR at various operating levels, including minimum generation, half, and maximum capacity. Key metrics such as terminal voltage (p.u.) are evaluated to assess the SMR's ability to maintain stability during and after fault scenarios. By examining the SMR's performance under different generation conditions, this paper provides valuable insights into the feasibility of integrating SMRs into modern power systems and their contributions to grid stability during transient events.

关键词： power system dynamics Green products power system stability Stability analysis power system reliability Reliability Inductors Oscillators Resilience Load modeling

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：