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2023 IEEE 17th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)最新文献

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Comprehensive Analysis of Pole/Slot Combination on Performance for Wheel-hub Propulsion 杆槽组合对轮毂推进性能的综合分析
Chenglong Chu, Yunkai Huang, Zichong Zhu, A. Cavagnino
Fractional slot concentrated winding machine is a promising solution for wheel-hub propulsion. However, there are so many pole/slot combinations for such machine especially when with larger number of poles. Such combinations usually have similar electromagnetic performance, thus it is difficult to select the most rational and optimal combinations from numerous candidates. This paper takes a 50kW high torque density wheel-hub motor as an example to make a comprehensive comparison of different pole-slot combinations. The common pole-slot combinations are screened by inherent performance and design specifications. Performance comparisons are then carried out to determine the appropriate combination for the prototype. Finally, prototypes are manufactured to verify the analysis results.
分槽集中绕线机是一种很有前途的轮毂推进方案。然而,有这么多的极/槽组合对于这样的机器,特别是当有较大数量的极。这些组合通常具有相似的电磁性能,因此很难从众多候选组合中选择最合理和最优的组合。本文以50kW高转矩密度轮毂电机为例,对不同的极槽组合进行了综合比较。常用的极槽组合通过其固有性能和设计规范进行筛选。然后进行性能比较,以确定原型的适当组合。最后,制作了样机来验证分析结果。
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引用次数: 0
Detection of Harmonics and Interharmonics by Using Cascaded Limit Cycle Oscillators 用级联极限环振荡器检测谐波和间谐波
E. Vazquez, J. Roldán-Pérez, M. Prodanović
Harmonics and interharmonics are a great concern in power systems. As a consequence, many works are addressing the detection of these disturbances. Traditional filters can be used to extract information from voltage and currents measurements. However, accurate estimation of these disturbances is challenging due to the large amount of frequency components that can be found in a single signal. In this paper, a method to detect harmonic and interharmonic components based on cascaded nonlinear limit cycle oscillators is presented. With the proposed method, these components can be extracted from the signal of interest even if their magnitudes change over time. Moreover, the proposed method is able to predict the frequency, phase and magnitude of each component with great accuracy. Simulation results performed in Matlab/Simulink are presented to validate the performance of the proposed technique.
谐波和间谐波是电力系统中的一个重要问题。因此,许多工作都在解决这些干扰的检测问题。传统的滤波器可用于从电压和电流测量中提取信息。然而,由于在单个信号中可以找到大量的频率成分,对这些干扰的准确估计是具有挑战性的。本文提出了一种基于级联非线性极限环振荡器的谐波和间谐波分量检测方法。使用所提出的方法,即使这些分量的大小随时间变化,也可以从感兴趣的信号中提取出来。此外,该方法能够较准确地预测各分量的频率、相位和幅值。在Matlab/Simulink中进行了仿真,验证了该技术的性能。
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引用次数: 0
A Fault Tolerant Converter for a SRM Drive Based on a Nine-Switch Inverter with a Dual Output 基于双输出九开关逆变器的SRM驱动容错变换器
V. Pires, D. Foito, A. Pires, A. Cordeiro, J. Martins
Switched Reluctance Machines (SRM) are a kind of electrical machines that have been adopted in many applications due to some interesting characteristics. One of the critical aspects associated to these machines is the required drive. In the case of a fault in one of its transistors the drive operation could become compromised. Thus, fault-tolerant converters are required to mitigate this problem. In this context, this paper presents a new power converter topology for a SRM drive. This topology intends to attenuate the problem of requiring many power semiconductors. Thus, a topology characterized by a reduced amount of power semiconductors is presented in this paper. The proposed topology is based on an inverter with a dual output taking advantage from the aspect that in the SRM the winding current can be inverted without affecting its operation. Besides the description of the behavior and characteristics, the theoretical assumptions are verified by several tests. These tests are done with the system in normal and fault-tolerant operation and were carried out by computer simulations.
开关磁阻电机(SRM)由于其一些有趣的特性而被广泛应用于许多领域。与这些机器相关的一个关键方面是所需的驱动器。如果其中一个晶体管出现故障,驱动操作就会受到影响。因此,需要容错转换器来缓解这个问题。在此背景下,本文提出了一种用于SRM驱动器的新型功率转换器拓扑结构。这种拓扑结构旨在减轻需要许多功率半导体的问题。因此,本文提出了一种以减少功率半导体数量为特征的拓扑结构。所提出的拓扑结构基于双输出逆变器,利用了在SRM中绕组电流可以反向而不影响其运行的优点。除了对其行为和特性的描述外,还通过若干试验验证了理论假设。这些测试是在系统正常运行和容错运行的情况下进行的,并通过计算机模拟进行了测试。
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引用次数: 0
Influence of selected factors on the parameters of a compact thermal model of an air transformer 选定因素对空气变压器紧凑热模型参数的影响
K. Górecki, K. Detka
The paper proposes a thermal model of an air transformer used in wireless power transfer (WPT) systems. This model takes into account self-heating in each of the windings and mutual thermal couplings between the windings. The description of the model takes into account the influence of the power dissipated in each of the windings and the distance between the windings on their self and transfer transient thermal impedances. The form of the proposed model, the method of determining its parameters, and the results of the model correctness verification on the example of a transformer with ring-shaped windings are presented. A good agreement was obtained between the results of measurements and simulations.
本文提出了一种用于无线电力传输系统的空气变压器的热模型。该模型考虑了每个绕组的自热和绕组之间的相互热耦合。该模型的描述考虑了每个绕组中耗散的功率和绕组之间的距离对其自身和传递瞬态热阻抗的影响。给出了模型的形式、参数的确定方法,并以环形绕组变压器为例对模型的正确性进行了验证。仿真结果与实测结果吻合较好。
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引用次数: 0
Feasibility Study of Universal Power Electronics Interface Operation in 350 V and 700 V Residential DC Microgrids 350v和700v住宅直流微电网通用电力电子接口运行的可行性研究
V. Sidorov, A. Chub, D. Vinnikov
The paper focuses on extending the applicability of the universal power electronics interface to two voltage standards of residential dc microgrids. The studied converter can seamlessly integrate various types of photovoltaic (PV) modules and battery energy storage types into the dc microgrids utilizing the same hardware platform. Using the topology morphing control (TMC), the proposed converter features a wide operating voltage range and high efficiency in both directions of power flow. Moreover, the TMC allows for doubling the voltage gain range for operation with different dc microgrid voltages. Experimental results show how the converter efficiency differs during its operation in 350 V or 700 V residential dc microgrids.
本文的重点是将通用电力电子接口的适用性扩展到住宅直流微电网的两个电压标准。所研究的变流器可以利用相同的硬件平台将各种类型的光伏模块和电池储能类型无缝集成到直流微电网中。利用拓扑变形控制(TMC),该变换器具有宽工作电压范围和高功率流方向效率的特点。此外,TMC允许在不同的直流微电网电压下将电压增益范围加倍。实验结果表明,在350v和700v住宅直流微电网中,变换器的效率是不同的。
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引用次数: 0
Stochastic Energy Management for Battery Storage System-Based Microgrid Considering Different Forecasting Models 考虑不同预测模型的电池储能微电网随机能量管理
Younes Zahraoui, T. Korõtko, A. Rosin, Roya Ahmadiahangar
As a result of the recent innovations in the deployment of distributed Energy Storage Systems (ESS) such as Battery Energy Storage Systems (BESS), this technology can play an important role as a distributed energy resource in supplying the system demand for the new generation of power systems. BESSs are considered promising technology in the microgrid to reduce reliance on fossil fuels and mitigate the intermittency from renewable energy sources in a microgrid in which operators adjust electricity procurement and storage decisions in dynamic response to changes in demand, supply, and pricing in real-time to increase the profit. Optimization approaches have been proposed as a way to increase the user’s profits from microgrid participation. However, renewable energy resources are highly uncertain and cannot be effectively predicted which affects the operation of the microgrid-based BESS. Therefore, this study presents a layout design of energy planning for microgrids using the stochastic energy management model. The proposed management algorithm aims to find a day-ahead optimal operation of the microgrid including the photovoltaic (PV) system, and BESS considering demand response programs in the grid-connected mode. The stochastic model operates a grid-tied PV-BESS-based microgrid asset to inject the power into the main grid and store the surplus energy to maximize the profit. Besides, to create the stochastic energy management model, machine learning and deep learning models are used to generate proper and accurate scenarios for the PV system. Finally, a systematic simulation based on time-varying electricity prices was carried out using a day-ahead profile of a single load profile.
由于近年来诸如电池储能系统(BESS)等分布式储能系统(ESS)的创新部署,该技术可以作为一种分布式能源在满足新一代电力系统的系统需求方面发挥重要作用。bess被认为是微电网中很有前途的技术,可以减少对化石燃料的依赖,减轻微电网中可再生能源的间歇性,运营商可以根据需求、供应和价格的变化实时调整电力采购和存储决策,以增加利润。优化方法已被提出作为增加用户从微电网参与中获利的一种方法。然而,可再生能源具有高度的不确定性,无法有效预测,影响了基于微网的BESS的运行。因此,本研究提出了一种基于随机能量管理模型的微电网能量规划布局设计。提出的管理算法旨在考虑并网模式下的需求响应方案,寻找包括光伏系统和BESS在内的微电网的日前最优运行。随机模型运行一个并网的基于pv - bess的微电网资产,将电力注入主电网并存储剩余能量,以实现利润最大化。此外,为了建立随机能量管理模型,使用机器学习和深度学习模型来生成合适和准确的光伏系统场景。最后,基于时变电价的系统仿真,采用单负荷曲线的日前曲线进行。
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引用次数: 0
Optimized Energy Scheduling of Residential DC Building: Case of Nordic Climate 住宅直流建筑能源优化调度:以北欧气候为例
Aleksandra A. Sidorova, A. Blinov, Roya Ahmadiahangar, D. Vinnikov, Karl-Villem Võsa, J. Kurnitski
In response to growing concerns about environmental pollution, energy shortages, and power supply security, efforts have been intensified to improve the energy efficiency of residential buildings, which account for around 27 percent of global energy consumption. This has led to the concept of nearly zero energy buildings (nZEB) that employ modern materials and construction techniques, efficient heating systems, and local power generation from renewable energies. In this study, the focus is on a nZEB located in the Nordic climate zone, with the primary goal of minimizing the electricity bill and maximizing self-consumption from rooftop PV. To achieve this, a novel battery management algorithm is proposed, and dc building is considered for increased efficiency. It was found that although it is not possible to cover day-by-day energy or heating system needs from PV generation, with the use of 18 kWh battery and proposed scheduling algorithm, it is possible to practically exclude electrical energy purchases during peak hours.
为了应对日益增长的对环境污染、能源短缺和电力供应安全的担忧,人们加大了提高住宅建筑能源效率的努力,住宅建筑占全球能源消耗的27%左右。这导致了近零能耗建筑(nZEB)的概念,它采用现代材料和建筑技术,高效的供暖系统,并利用可再生能源在当地发电。在这项研究中,重点是位于北欧气候区的nZEB,其主要目标是最大限度地减少电费和最大化屋顶光伏的自我消耗。为了实现这一目标,提出了一种新的电池管理算法,并考虑了直流构建以提高效率。研究发现,虽然光伏发电无法满足日常的能源或供热系统需求,但使用18kwh电池和提出的调度算法,实际上可以排除高峰时段的电能购买。
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引用次数: 0
Multi-factor modelling of electric grids for social and technical impact studies 用于社会和技术影响研究的电网多因素建模
Rafael Marentes-Ortiz, F. Sellier, Fei Gao, João Martins, Ylenia Curci
This paper proposes a load flow-based approach to analyze electric systems, with the aim of considering multiple factors in grid studies, including technical, social, environmental, and economic factors. The proposed method enables the graphical design of grids, and the seamless integration of models of distributed generation, residential loads, and economic signals, such as day-ahead prices. The validity of the approach is demonstrated by comparing its results against the traditional iterative load flow analysis approach. Several test cases are presented to showcase the model’s capabilities in studying economic and environmental factors. Notably, the study of residential loads generated for different scenarios enables the observation of the impact of social factors, such as household size, on the grid.
本文提出了一种基于负荷潮流的电力系统分析方法,旨在考虑电网研究中的多种因素,包括技术、社会、环境和经济因素。所提出的方法能够实现电网的图形化设计,以及分布式发电、居民负荷和经济信号(如日前价格)模型的无缝集成。通过与传统迭代潮流分析方法的比较,验证了该方法的有效性。几个测试案例展示了该模型在研究经济和环境因素方面的能力。值得注意的是,对不同情况下产生的住宅负荷的研究可以观察社会因素(如家庭规模)对电网的影响。
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引用次数: 0
Design Considerations of Common Mode and Differential Mode EMI Input Filter Based on Planar Ferrite Core 基于平面铁氧体铁芯的共模和差模电磁干扰输入滤波器设计考虑
K. Kroičs
The paper describes the design of PCB winding and planar ferrite core based common mode and differential mode EMI filters. The paper proposes idea how to integrate both inductors into single core thus potentially reducing the size of the filter. The inductance and impedance measurements have been shown in the paper. It is discussed possibility to integrate capacitance into PCB based inductor. It has been concluded that integration of input EMI filter has a good potential, especially if the converter works at higher switching frequencies and therefore low value inductances and capacitances are needed. Experimental designs of such passive components are shown in the paper.
本文介绍了基于共模和差模电磁干扰滤波器的PCB绕组和平面铁氧体磁芯的设计。本文提出了如何将两个电感器集成到单芯中,从而有可能减小滤波器的尺寸。文中给出了电感和阻抗的测量结果。讨论了将电容集成到PCB电感中的可能性。结论是,集成输入EMI滤波器具有良好的潜力,特别是当变换器工作在较高的开关频率时,因此需要低值的电感和电容。本文给出了这类无源元件的实验设计。
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引用次数: 0
Simulation Study of Processes in Electric Vehicles under Braking Control Based on Reinforcement Learning 基于强化学习的电动汽车制动控制过程仿真研究
V. Vodovozov, Z. Raud, E. Petlenkov
Uncertainty and non-linearity in the braking process of electric vehicles prevent the use of classical control methods. Given the presence of many algorithms, each of which acts differently in various braking conditions, this study proposes an intelligent braking methodology that can adapt to changing modes and environmental characteristics. Once the need in braking is detected, the required parameters of the vehicle and the road are forwarded into the neural network generated its action with the help of deep reinforcement learning. A system presented makes a decision regarding the braking torque strength and its sharing between electrical and friction brakes for every driving situation. The simulation was carried out to test the effectiveness of the proposed approach which results show that the offered method ensures high-quality deceleration with good energy recovery without skidding and, thereby increases the braking efficiency.
电动汽车制动过程的不确定性和非线性使传统的控制方法难以应用。鉴于存在许多算法,每种算法在各种制动条件下的作用不同,本研究提出了一种智能制动方法,可以适应不断变化的模式和环境特征。一旦检测到制动需求,车辆和道路所需的参数将被转发到神经网络中,通过深度强化学习生成其动作。该系统针对不同的行驶工况,对电动制动器和摩擦制动器的制动扭矩强度及其分配进行决策。通过仿真验证了该方法的有效性,结果表明该方法能保证高质量的减速度和良好的能量回收,从而提高了制动效率。
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引用次数: 0
期刊
2023 IEEE 17th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)
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