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2020 IEEE Power and Energy Conference at Illinois (PECI)最新文献

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PECI 2020 Copyright Page PECI 2020版权页面
Pub Date : 2020-02-01 DOI: 10.1109/peci48348.2020.9064629
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引用次数: 0
Conceptual Design of an eVTOL Air Shuttle for Rapid Intercity Transport 城际快速运输用eVTOL空中班车概念设计
Pub Date : 2020-02-01 DOI: 10.1109/PECI48348.2020.9064631
Jianqiao Xiao, N. Salk, K. Haran
This paper proposes an electric vertical take-off and landing (eVTOL) aircraft for transportation between cities separated by a short distance (<200 miles). The aircraft will carry 10 passengers and is meant to replace shuttle buses as a faster and more direct form of transportation. An iterative optimization method of developing aero-propulsive parameters for the air shuttle is proposed and demonstrated. Results of the optimization are analyzed to determine developments in enabling technology that are necessary for increasing the feasibility of this new form of transportation.
本文提出了一种用于城市间短距离(<200英里)运输的电动垂直起降(eVTOL)飞机。这架飞机将搭载10名乘客,旨在取代穿梭巴士,成为一种更快、更直接的交通方式。提出并论证了一种求解航天飞机气动推进参数的迭代优化方法。对优化结果进行分析,以确定提高这种新型运输方式可行性所必需的使能技术的发展。
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引用次数: 8
Line Parameter Estimation of Distribution Network after Grounding Fault 配电网接地故障后线路参数估计
Pub Date : 2020-02-01 DOI: 10.1109/PECI48348.2020.9064644
Hao Jin, Zhan Gao, Jianfeng Zhao
With the high impedance single-phase ground fault occurs in a distribution network, the line parameters will change substantially. Typically, the neutral resonance grounding is used to compensate the fault current. Better results can be achieved with active compensation, but precise line parameters need to be known. In this paper, an existing method of estimating distribution line parameters using only RMS voltage and power measurements is employed to estimate distribution line parameters after high impedance single-phase ground fault. The power flow equation without voltage phase angle, the compensation model of active compensation device and the measurement error compensation model are established. Simulation results obtain the required line parameters while reducing measurement error and computational complexity. It is conducive to the subsequent state analysis of distribution lines.
配电网发生高阻抗单相接地故障后,线路参数将发生较大变化。通常,中性点谐振接地用于补偿故障电流。主动补偿可以获得更好的效果,但需要知道精确的线参数。本文采用现有的仅通过均方根电压和功率测量来估计配电线路参数的方法来估计高阻抗单相接地故障后的配电线路参数。建立了无电压相角时的潮流方程、有源补偿装置的补偿模型和测量误差补偿模型。仿真结果得到了所需的线路参数,同时减小了测量误差和计算复杂度。有利于后续配电线路的状态分析。
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引用次数: 2
New Voltage Balancing Technique Based on Carrier-Disposition Pulse Width Modulation for Modular Multilevel Converter 基于载波配置脉宽调制的模块化多电平变换器新型电压平衡技术
Pub Date : 2020-02-01 DOI: 10.1109/PECI48348.2020.9064635
M. Jafari, Sepehr Saadatmand, Amin Shojaeighadikolaei, Fatemehalsadat Jafarishiadeh, Arman Ghasemi, Ali Alshawish, R. Ahmadi
Various modulation schemes have been employed in literature for controlling the output voltage of Modular Multilevel Converters (MMCs). Among these techniques, carrier-disposition PWM method results in uneven distribution of voltage on the capacitors of different submodules (SMs), and therefore affects the output voltage harmonics and causes large magnitudes of circulating current. This paper presents a novel modified carrier deposition PWM technique with SM capacitor voltage balancing that does not need the number of output voltage levels and can be employed for any of the three carrier-deposition PWM methods (PD, POD, and APOD) without any modification. The proposed method is described, and simulation results are provided to verify the theoretical outcomes. Among the three mentioned PWM schemes, PD scheme generates around two times output voltage levels than POD and APOD, and hence has best output voltage harmonic performance.
文献中已经采用了各种调制方案来控制模块化多电平转换器(MMCs)的输出电压。在这些技术中,载波配置PWM方法导致不同子模块电容上电压分布不均匀,从而影响输出电压谐波,产生较大的循环电流。本文提出了一种新的改进的SM电容电压平衡载波沉积PWM技术,该技术不需要输出电压电平的数量,可以用于三种载波沉积PWM方法(PD、POD和APOD)中的任何一种,而无需任何修改。对所提出的方法进行了描述,并给出了仿真结果来验证理论结果。在上述三种PWM方案中,PD方案比POD和APOD方案产生两倍左右的输出电压电平,因此具有最好的输出电压谐波性能。
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引用次数: 8
A Robust MPPT Method Based on AWILOG-ZALMS Algorithm for SPV Systems Under Various Loads and Non-Uniform Irradiance Conditions 基于AWILOG-ZALMS算法的SPV系统多负荷非均匀辐照鲁棒MPPT方法
Pub Date : 2020-02-01 DOI: 10.1109/PECI48348.2020.9064637
Haider A. Mohamed Kazim, I. Abdel-Qader
A robust Zero-Attracting LMS (ZALMS) time-adjustment stepsize adaptation technique for the conventional P&O MPPT method of PV systems is presented. We aimed in this work to accurately attain the maximum power point of the PV systems under various loads and irradiation conditions using Absolute Weighted Input using Log (AWILOG) function for variable stepsize (VSS) ZALMS, i.e. AWILOG-VSS-ZALMS algorithm from [21]. In this work, the filter coefficients adaptation strategy used is based on the L1-norm constraint instead of the L0-norm as was proposed in the AWILOG-VSS-RZALMS [21]. We present a comparative analysis using different connected load types under several patterns of non-uniform irradiation conditions. Results show that in comparison with the conventional method, our algorithm delivers faster convergence and a more rapid response to environmental variations while still reducing steady-state power oscillations. The comparative analysis between both methods using L1-norm versus L0-norm showing their tracking behavior in terms of speed and performance is also presented. Results show that this proposed work, when compared to the AWILOG-VSS-RZALMS algorithm in [19], delivers a relatively slower dynamic response but it delivers a reduction in computational complexity making it more suitable for practical application. In all, the algorithm is robust, and we aim in the future to implement it in real-time systems.
提出了一种鲁棒的零吸引LMS (ZALMS)时调整步长自适应技术,用于光伏系统的常规P&O MPPT方法。在这项工作中,我们的目标是使用可变步长(VSS) ZALMS的绝对加权输入(AWILOG)函数,即[21]中的AWILOG-VSS-ZALMS算法,准确地获得光伏系统在各种负载和辐照条件下的最大功率点。在这项工作中,使用的滤波器系数自适应策略基于l1范数约束,而不是AWILOG-VSS-RZALMS[21]中提出的l0范数约束。我们提出了在几种不均匀辐照条件下使用不同连接负载类型的比较分析。结果表明,与传统方法相比,该算法收敛速度更快,对环境变化的响应速度更快,同时仍能减少稳态功率振荡。还介绍了两种方法之间的比较分析,分别使用l1规范和l0规范,显示了它们在速度和性能方面的跟踪行为。结果表明,与[19]中的AWILOG-VSS-RZALMS算法相比,本文提出的工作提供了相对较慢的动态响应,但降低了计算复杂度,使其更适合实际应用。总之,该算法是鲁棒的,我们的目标是在未来的实时系统中实现它。
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引用次数: 0
Autonomous Power Dispatch for a Deep Space Vehicle Power System 深空飞行器动力系统的自主动力调度
Pub Date : 2020-02-01 DOI: 10.1109/PECI48348.2020.9064675
P. Kulkarni, D. Aliprantis, B. Loop, N. Wu
The electric power system of a deep space vehicle is mission-critical, and needs to respond to faults intelligently and autonomously. Such a system consists of solar arrays, batteries, and loads. Its topology is re-configurable by virtue of a number of controllable switches. In this paper, an algorithm is set forth that decides how to operate the system under both normal and faulted conditions. Operational decisions include shedding loads, switching lines, and controlling battery charging, based on the importance of the loads and the transmission loss. As part of this algorithm, an optimal power flow problem is formulated as a mixed integer linear program. Results of case studies considering different faults in the system are presented.
深空飞行器的电力系统对任务至关重要,需要对故障进行智能自主响应。这种系统由太阳能电池阵列、电池和负载组成。它的拓扑结构是可重构的,通过一些可控开关。本文提出了一种确定系统在正常和故障情况下如何运行的算法。根据负载的重要性和传输损耗,操作决策包括卸载负载、切换线路和控制电池充电。作为该算法的一部分,将最优潮流问题表述为一个混合整数线性规划。给出了考虑系统中不同故障的实例研究结果。
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引用次数: 0
Adaptive Ripple Correlation Control (ARCC) for Solar Maximum Power Point Tracking 太阳能最大功率点跟踪的自适应纹波相关控制(ARCC)
Pub Date : 2020-02-01 DOI: 10.1109/PECI48348.2020.9064630
Hasan Abed Al Kader Hammoud, A. Bazzi
This paper presents a new approach for maximum power point tracking, namely, adaptive ripple correlation control (ARCC). Finding the proper value of the control law gain for traditional ripple correlation control (RCC) is not straightforward and does not adapt to significant changes in the solar irradiance and temperature. This paper presents a fast and robust method that adapts the control law gain k in order to achieve maximum power point tracking with small power ripple content p̃. The paper starts with a review of the basic concepts of ripple correlation control. We then propose an adaptation technique with three variants: Two fixed gain values, one fixed gain value and another dynamic value, and two dynamic gain values. Afterwards we present simulation results that validate the quick and robust response of our proposed methods compared to P&O and INCO. Next, a comparison to traditional RCC and a comparison between control gain of various methods are presented. Finally, we conclude by presenting tips on setting up the fixed and varying gain values.
提出了一种新的最大功率点跟踪方法,即自适应纹波相关控制(ARCC)。传统纹波相关控制(RCC)的控制律增益不容易确定,不能适应太阳辐照度和温度的显著变化。本文提出了一种快速、鲁棒的方法,该方法通过调整控制律增益k来实现小功率纹波的最大功率点跟踪。本文首先回顾了纹波相关控制的基本概念。然后,我们提出了一种具有三种变体的自适应技术:两个固定增益值,一个固定增益值和另一个动态增益值,以及两个动态增益值。随后,我们给出了仿真结果,与P&O和INCO相比,验证了我们提出的方法的快速和鲁棒性。其次,对传统碾压混凝土进行了比较,并对各种方法的控制增益进行了比较。最后,我们总结了关于设置固定和变化增益值的提示。
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引用次数: 1
A Review of Methodical Decentralisation of Energy and Energy Transactions Utilising Distributed Ledger via Transition Architecture Based Framework 基于过渡架构框架的分布式账本能源和能源交易系统去中心化综述
Pub Date : 2020-02-01 DOI: 10.1109/PECI48348.2020.9064650
A. Chopra, N. Nair
This paper is a review of literature, resources and advances in peer to peer ledger technology adoption and not just the evolution of ledger technology in power sector. It also introduces the concept of transition architectures from the field of enterprise architecture to fill the gap in adoption. It reviews the possibility of de-centralising energy optimally and the possibility of using an architecture roadmap of milestones (transition states) via transition architectures to enhance adoption rates. The paper evaluates features of distributed ledgers. It identifies the core features that can be introduced independent of each other, thereby making a minimal usable product in each transition state via transition architectures with a view of target state that would encompass all core features. It covers engaging the current participants (generators, transmission, distributors, metering, retailers, prosumers, banks, regulators and others); and how a gradual evolving nature via transition architectures would increase adoption due to smooth transition as the roles of current participants evolve while the market dynamics re-orchestrates. A discussion and proposal for a custom distributed ledger framework for energy domain balancing decentralisation, immutability, verification and transparency in a gradual manner; to address privacy, compliance, regulations and peer to peer trading is presented.
本文回顾了点对点分类帐技术采用的文献、资源和进展,而不仅仅是分类帐技术在电力部门的发展。它还从企业架构领域引入了转换架构的概念,以填补采用方面的空白。它审查了优化去中心化能源的可能性,以及通过过渡架构使用里程碑(过渡状态)的架构路线图以提高采用率的可能性。本文对分布式账本的特征进行了评价。它确定了可以相互独立引入的核心特性,从而通过具有包含所有核心特性的目标状态视图的转换体系结构,在每个转换状态下创建最小可用产品。它包括吸引当前的参与者(发电机、输电、分销商、计量、零售商、生产消费者、银行、监管机构和其他);以及随着当前参与者角色的演变和市场动态的重新协调,通过转换架构逐渐演变的性质将如何由于平滑的转换而增加采用率。讨论并提出了一种自定义分布式分类账框架,以逐步平衡能源领域的去中心化、不变性、可验证性和透明度;为了解决隐私、合规性、法规和点对点交易问题。
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引用次数: 4
Robust and Optimal Single-loop Voltage Controller for Grid-forming Voltage Source Inverters 并网电压源逆变器鲁棒最优单回路电压控制器
Pub Date : 2020-02-01 DOI: 10.1109/PECI48348.2020.9064633
Soham Chakraborty, Sourav Patel, M. Salapaka
Design and implementation of an optimal and robust single-loop voltage controller is proposed for single-phase grid-forming voltage source inverter (VSI). The objective of the proposed controller is to have good reference tracking and disturbance rejection. Uncertain nature of loads can significantly alter system’s behavior, especially during heavily loaded conditions, and impose an uncertainty in the dynamic model. This deteriorates the robustness of the controller severely. ℋ∞-based controller design is proposed in this article to address this issue. The required objectives of the optimal controller are formulated after modeling the loads as uncertain element of the control system. Time-domain MATLAB/SIMULINK-based simulation study substantiates the fact that the resulting controller exhibits superior robustness in performance during varying loading conditions of VSI than that of the conventional multi-loop control architecture. OPAL-RT based controller hardware-in-the-loop (CHIL) simulations with low-cost controller are conducted to validate the computational footprint of the resulting controller.
针对单相并网电压源逆变器,提出了一种最优鲁棒单回路电压控制器的设计与实现。所提出的控制器的目标是具有良好的参考跟踪和抗干扰性。负载的不确定性会显著地改变系统的行为,特别是在重载条件下,并在动态模型中施加不确定性。这严重降低了控制器的鲁棒性。为了解决这一问题,本文提出了基于h∞的控制器设计。将负荷建模为控制系统的不确定因素,从而确定了最优控制器的目标。基于MATLAB/ simulink的时域仿真研究表明,所得到的控制器在VSI不同负载条件下的鲁棒性优于传统的多环控制结构。利用低成本控制器对基于OPAL-RT的控制器进行了硬件在环(CHIL)仿真,验证了所得到的控制器的计算占用。
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引用次数: 3
Value Gradient Learning Approach in Power and Frequency Regulation of Grid-Connected Synchronverters 并网同步器功率和频率调节中的值梯度学习方法
Pub Date : 2020-02-01 DOI: 10.1109/PECI48348.2020.9064641
Sepehr Saadatmand, Hamad Alharkan, P. Shamsi, M. Ferdowsi
In this paper, a neural network adaptive critic design (ACD) method based on value gradient learning (VGL) is used to optimally control a grid-connected synchronverter. The main drawback of the traditional synchronverters is their infeasibility to face non-inductive grids. To be able to implement a synchronverter technique in any impedance angle, a neural network-based adaptive controller is used. The advantage of adaptive dynamic programing is its ability to adjust itself when it faces changes and uncertainties in the power system. The proposed VGL consists of two subnetworks: the critic network and the action network. The action network is trained during the operation, and the critic network can be pretrained offline or can be simultaneously trained with the action network. To compare the effectiveness of the traditional synchronverter to the VGL-based synchronverter, the simulation results are provided.
提出了一种基于值梯度学习(VGL)的神经网络自适应批评设计(ACD)方法,用于并网同步器的最优控制。传统同步器的主要缺点是无法面对无感电网。为了在任意阻抗角度下实现同步器技术,采用了基于神经网络的自适应控制器。自适应动态规划的优点是能够在面对电力系统的变化和不确定性时进行自我调整。提出的VGL由两个子网组成:批评网络和行动网络。动作网络在运行过程中进行训练,批评家网络可以离线预训练,也可以与动作网络同时训练。为了比较传统同步器与基于vgl的同步器的有效性,给出了仿真结果。
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引用次数: 3
期刊
2020 IEEE Power and Energy Conference at Illinois (PECI)
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