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2020 3rd International Conference on Energy, Power and Environment: Towards Clean Energy Technologies最新文献

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Primary Control Strategies for Power Sharing and Voltage Regulation in DC Microgrid: A Review 直流微电网电力共享和电压调节的主要控制策略综述
Raj Aryan, R. Ranjan, Amritesh Kumar
The concept of microgrid (MG) in the field of power engineering rapidly adapted for the rapid improvement in power electronics technology. Due to the benefit of such a distribution system with direct current (DC) minimum losses and simple to integrate with an electrical energy storage system DC MG have attracted more attention these days. DC MG is a hot research topic consists of various sources due to the expansion of distributed generation. The critical issue is to dispense regulated voltage support and accurate power-sharing capability in such a multisource DC MGs. Since the control scheme plays an essential role in establishing premier power quality and high efficiency of MG, a thorough review of trending control methodology in DC MGs is required. This paper explains the primary control methodology within the hierarchical control architecture for DC MGs.
随着电力电子技术的飞速发展,微电网的概念在电力工程领域得到了迅速的适应。由于直流配电系统具有损耗小、易于与储能系统集成等优点,近年来受到越来越多的关注。由于分布式发电的发展,由多种电源组成的直流电源是一个热点研究课题。关键问题是在这种多源直流mgg中分配稳压支持和精确的功率共享能力。由于控制方案对电机的优质电能质量和高效率起着至关重要的作用,因此有必要对直流电机趋势控制方法进行全面的研究。本文解释了直流电机分层控制体系结构中的主要控制方法。
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引用次数: 2
Bifurcation, Chaos and PID Sliding Mode Control of 3-Bus Power System 三母线电力系统的分岔、混沌及PID滑模控制
Piklu Das, P. Gupta, P. Singh
This paper exclaims analysis of bifurcation and chaos phenomena in a 3-bus electrical power system model. The nonlinear dynamic modeling of proposed power system is achieved using generator, load models and equivalent circuit of 3-bus model. The reactive power of the motor is considered as a varying or bifurcation parameter and existence of dynamic behaviors like bifurcation and chaos in 3-bus power system model is discussed via. phase plane, time series plot, bifurcation diagram, Lyapunov spectrum and Poincare map. PID sliding surface-based sliding mode control is designed to control undesirable chaotic behavior in the proposed 3-bus power system and is not available in the literature. Simulation is achieved in MATLAB environment and obtained results show successful achievement of the objectives.
本文对三母线电力系统模型中的分岔和混沌现象进行了分析。采用发电机模型、负荷模型和三母线等效电路模型,实现了系统的非线性动态建模。将电机无功功率作为变分岔参数,讨论了三母线电力系统模型中存在分岔和混沌等动态行为。相平面,时间序列图,分岔图,李亚普诺夫谱和庞加莱图。基于PID滑动面的滑模控制旨在控制所提出的三总线电力系统中的不良混沌行为,这在文献中是不可用的。在MATLAB环境下进行了仿真,得到的结果表明,该方法成功实现了目标。
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引用次数: 3
Session Wise Paper Details 会议文件详细信息
Session Wise Paper Details.
会话明智的论文细节。
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引用次数: 0
Design and Development of a simplified SVPWM based Vector Controller for IPMSM with MTPA Strategy 基于简化SVPWM的MTPA策略IPMSM矢量控制器的设计与开发
M. Jena, K. Mohanty
This paper presents technique to design current, speed controller using field oriented vector control(FOC) for interior permanent magnet synchronous motor(IPMSM) using a novel simplified SVPWM algorithm. The internal model principle is applied to tune the current loop of ipmsm. To simplified the current loop design procedure, PI controller parameters are directly expressed in terms of machine parameters and desired closed loop bandwidth. Maximum torque per ampere(MTPA) method is used to improve the overall efficiency of motor drive system by injecting demagnetizing current component. A computer simulation shows the validity and effectiveness of proposed algorithm.
本文提出了一种新颖的简化SVPWM算法,用于内部永磁同步电动机的磁场定向矢量控制(FOC)的电流、速度控制器的设计。应用内模原理对ipmsm电流环进行了调谐。为了简化电流环的设计程序,PI控制器参数直接表示为机器参数和期望的闭环带宽。采用最大转矩/安培(MTPA)法,通过注入退磁电流元件来提高电机驱动系统的整体效率。计算机仿真结果表明了该算法的有效性。
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引用次数: 0
Reduced Switch Quadruple Boost Switched-Capacitor based Multilevel Inverter 基于小开关四倍升压开关电容的多电平逆变器
K. Panda, N. P, S. K. Bisoyi, G. Panda
Switched-capacitor (SC) based structures are gaining a lot of popularity due to the simple natural balancing and voltage boosting features. However, to create a high-quality output, some of the existing structures require multiple dc sources and some requires a large number of switches with peak voltage stress. This is a major issue In PV application of the SC based multilevel inverters (MLIs). To get rid of these issues, this work introduces a new single input SC MLI that produces a 17-level output utilizing fewer components. The proposed structure utilizes a new SC unit and only three capacitors are required that assists in quadruple voltage boosting by maintaining the desired voltage across it. Without any voltage balancing control scheme, the capacitor voltages are naturally balanced. i.e., two capacitors in the SC unit are charged to half of the input voltage magnitude and the other capacitor is charged to twice the input voltage magnitude. In addition to this, the stress across the switches and the capacitors is confined to twice the source voltage. Followed by a thorough comparison with the existing 17-level structures, simulation and experimental test results under dynamic operating conditions are provided to validate the functionality of the proposed SC MLI.
基于开关电容器(SC)的结构由于其简单的自然平衡和升压特性而越来越受欢迎。然而,为了产生高质量的输出,现有的一些结构需要多个直流电源,而另一些则需要大量具有峰值电压应力的开关。这是基于SC的多电平逆变器(MLIs)在光伏应用中的一个主要问题。为了解决这些问题,这项工作引入了一种新的单输入SC MLI,它使用更少的组件产生17级输出。提出的结构利用了一个新的SC单元,只需要三个电容器,通过维持所需的电压来帮助四倍电压提升。没有任何电压平衡控制方案,电容器电压自然平衡。即,SC单元中的两个电容器被充电到输入电压大小的一半,另一个电容器被充电到输入电压大小的两倍。除此之外,开关和电容器之间的应力被限制在源电压的两倍。通过与现有的17级结构进行比较,给出了动态运行条件下的仿真和实验测试结果,以验证所提出的SC MLI的功能。
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引用次数: 2
Micro PMU Placement In Distribution Network With Probabilistic Contingencies and Bound Budget 具有概率偶然性和有界预算的配电网微PMU配置
M. Mukherjee, B. K. Roy
This paper envisages a novel proposal for micro-PMU placement in distribution network in a budget constraint environment to gear the single branch outage condition. The objectives of this work are to deploy minimum number of micro-PMUs in distribution network in order to get complete system observability considering channel cost of micro-PMUs for the sake of easing down the economic burden, to evaluate the total cost and to propose an algorithm serving situational coverage of single branch outage condition. In a reserved budget circumstance aiming at subduing the number of extra micro-PMUs under single branch outage condition, reliability of system components under normal and adverse weather conditions are introduced. Probability of unavailability of each branch is computed by Markov chain two state transition model. The probability assessment justifies the number of branches should be taken care off to meet the bound budget environment. An example with evaluation of cost has been provided for IEEE 34 test bus system.
本文提出了一种在预算约束环境下配电网中放置微型pmu以适应单支路停电情况的新方案。本文以在配电网中部署最小数量的微型pmu以获得完全的系统可观察性为目标,考虑到微型pmu的通道成本以减轻经济负担,对总成本进行评估,并提出了一种服务于单支路停机情况下的情景覆盖算法。在预留预算的情况下,以控制单支路停电情况下多余的微型pmu数量为目标,介绍了系统组件在正常和恶劣天气条件下的可靠性。利用马尔可夫链二态转移模型计算各分支不可用概率。概率评估证明了分支的数量应该被减少,以满足有限的预算环境。给出了ieee34测试总线系统的成本评估实例。
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引用次数: 0
Three-Phase AC-DC Converter with Algorithm based Adaptive Direct Power Control Technique and Backstepping Controller 基于算法的自适应直接功率控制技术和反步控制器的三相交直流变换器
Amit Kumar, S. Mishra
In this work, a backstepping controller for the regulation of dc bus voltage is presented for a three-phase AC-DC power converter with an algorithm based adaptive direct power control (ADDPC) technique. This controller is employed in the outer voltage control loop and the AADPC scheme is utilized in the inner control loop. The presented approach is providing better voltage regulation of the outer loop and improving the dynamic response of the ac-dc converter. Two cases are considered, in the first case the load is increased, and in the second case the load is decreased across the dc bus. Laboratory experiments are performed and from obtained results, it is observed that with the backstepping controller dc bus voltage dip and rise are also decreased as compared to the PI controller-based AADPC approach for increase and decrease of load respectively. Power ripples and percentage THD content in the supply side line current is nearly comparable under steady-state. The introduced controller with AADPC can suppress the fluctuations in the dc bus faster as compared to the conventional PI-based approach which is enhancing the system's dynamic performance.
本文采用基于算法的自适应直接功率控制(ADDPC)技术,设计了一种用于三相交直流电源变换器直流母线电压调节的反步控制器。外电压控制环采用该控制器,内电压控制环采用AADPC方案。该方法可以改善外环的电压调节,改善交直流变换器的动态响应。考虑两种情况,在第一种情况下,负载增加,在第二种情况下,负载在直流母线上减少。实验结果表明,与基于PI控制器的AADPC方法相比,采用反步控制器的直流母线电压在增加和减少负载时的下降和上升也有所降低。在稳态下,供电侧线路电流中的功率波动和THD含量百分比几乎相当。与传统的基于pi的控制器相比,采用AADPC的控制器可以更快地抑制直流母线的波动,从而提高系统的动态性能。
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引用次数: 0
MSOGI-FLL based Robust Harmonics Compensation under Distorted Grid Voltage Condition 电网电压畸变条件下基于MSOGI-FLL的鲁棒谐波补偿
A. Dubey, J. Mishra, Amritesh Kumar, Ashish A. Dongre
In the presence of a non-linear load, the grid Power Quality (PQ) is seriously affected due to harmonic current demand. To compensate these harmonics to the non-linear load, shunt active power filter (SAPF) is generally used. Among several approaches of control of SAPF, Synchronous reference frame (SRF) based control is most common and simple. Further, the performance of SRF based control depends on the unit vector generation methodology. Particularly under distorted voltage condition at the grid, estimation of unit template seriously gets affected, that further marred the performance of SRF control. In this paper, Multiple Second-Order Generalized Integrator-Frequency Locked Loop (MSOGI-FLL) is used to generate the unit template for SRF based SAPF operation under distorted grid condition. The effectiveness of the proposed control technique based on MSOGI-FLL is verified using MATLAB simulation and OPAL-RT real-time simulation. The total harmonics distortion (THD) level of grid current is maintaining as per the IEEE-519 standard.
在存在非线性负荷的情况下,谐波电流需求会严重影响电网的电能质量。为了补偿这些谐波对非线性负载的影响,通常采用并联有源电力滤波器(SAPF)。在SAPF的几种控制方法中,基于同步参考帧(SRF)的控制是最常见和最简单的。此外,基于SRF的控制性能取决于单位向量生成方法。特别是在电网电压畸变条件下,单元模板的估计受到严重影响,进一步影响了SRF控制的性能。本文利用多重二阶广义积分器锁频环(MSOGI-FLL)在扭曲网格条件下生成基于SRF的SAPF运算单元模板。通过MATLAB仿真和OPAL-RT实时仿真验证了基于MSOGI-FLL控制技术的有效性。电网电流的总谐波失真(THD)水平符合IEEE-519标准。
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引用次数: 1
Analysis and Comparison of Various Islanding Detection Schemes for DC Microgrids 直流微电网各种孤岛检测方案的分析与比较
B. K. Choudhury, P. Jena
Islanding detection is a critical issue in the case of AC and DC microgrids (MGs). If the islanding detection technique fails, it may lead to instability in the system. This can affect the load side devices as well as consumers. Many methods have been proposed to detect islanding on AC MGs. Nowadays, the researchers focus on DC MGs islanding detection schemes (IDSs) as the number of converters in DC MGs is reduced significantly. This also leads to reduce total conversion losses to achieve improved efficiency. A current injection-based active islanding detection scheme (IDS) is proposed to detect islanding in DC MGs. This paper compares three passive IDSs, namely under/over voltage (UOV), change in impedance (CII), and rate of change of power (ROCOP) based passive IDSs with the proposed current injection-based active IDS. The performance of these techniques is compared in terms of detection time and the effectiveness during different non-islanding cases. The performance and effectiveness of the proposed IDSs are verified and compared with the help of hardware set up and dSPACE DS1104 controller.
孤岛检测是交直流微电网的一个关键问题。如果孤岛检测技术失败,可能会导致系统不稳定。这可能会影响负载侧设备以及消费者。人们提出了许多方法来检测交流电磁陀螺上的孤岛。随着直流磁流变管中变换器数量的显著减少,目前研究的重点是直流磁流变管孤岛检测方案。这也导致减少总转换损失,以实现提高效率。提出了一种基于电流注入的主动孤岛检测方案(IDS),用于检测直流mggs中的孤岛。本文将基于欠/过压(UOV)、阻抗变化(CII)和功率变化率(ROCOP)的三种无源IDS与基于电流注入的有源IDS进行了比较。在不同的非孤岛情况下,比较了这些技术的检测时间和有效性。通过硬件设置和dSPACE DS1104控制器,验证了所提ids的性能和有效性。
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引用次数: 1
Finite Element Based Modelling of the Thermal Behaviour of Converter Transformers influenced by DC Bias 直流偏置影响下换流变压器热行为的有限元建模
Suman Yadav, G. Suman, R. Mehta
The work emphasises on the thermal behaviour of a High Voltage DC transformer on the occurrence of DC bias in the system. The DC bias can lead to temperature rise in the transformer and can form hotspot in the windings which may result in various issues including thermal breakdown among others. A two-dimensional design of the core and windings of the converter transformer is modelled using Finite Element Method and is considered for studying the thermal behaviour due to the presence of DC bias. The results are curve fitted to obtain a sigmoidal function describing the variation of hotspot temperature with respect to applied DC bias. The developed function is validated by choosing different values of DC biases. Besides, the statistical significance of the function has also been evaluated. The obtained results are encouraging in the prediction of the hottest spot temperature.
本文着重研究了高压直流变压器在系统中发生直流偏置时的热行为。直流偏置会导致变压器温度升高,并可能在绕组中形成热点,从而可能导致各种问题,包括热击穿等。采用有限元法对换流变压器铁芯和绕组的二维设计进行了建模,并考虑了直流偏压存在时的热行为。对结果进行拟合,得到热点温度随外加直流偏置变化的s型函数。通过选择不同的DC偏置值来验证所开发的函数。此外,还对函数的统计显著性进行了评价。所得结果在预测最热点温度方面具有鼓舞人心的作用。
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引用次数: 0
期刊
2020 3rd International Conference on Energy, Power and Environment: Towards Clean Energy Technologies
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