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2021 International Conference on Sustainable Energy and Future Electric Transportation (SEFET)最新文献

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SeFet 2021 Author Index SeFet 2021作者索引
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引用次数: 0
A New BEMF Technique for the Sensorless Control of PMBLDC Motor Drive 一种用于永磁无刷直流电机无传感器控制的BEMF新技术
Shiv Pratap Singh Rajawat, U. Kalla, Sanjeev Singh
PM brushless DC motor provides an upper edge over other motors like induction & synchronous motors in terms of its high torque to weight ratio and simple structure and thus taken into account for a wide range of applications. For the control and operation of PMBLDCM, both sensorbased and sensorless techniques are used. Sensor-based techniques involve hall sensors, encoders, etc. to detect the rotor’s position, which generally results in increased cost and reduced reliability due to the temperature constraints of these sensors. In this paper, a new BEMF technique is proposed for sensorless control of the PMBLDC motor. As we know that the BEMF waveform of each phase is equally distributed in positive and negative halves and in this technique, the positive polarity of the BEMF is allocated to generate switching pulses for the commutation of upper hand switches (Sl, S3, S5) of the inverter and negative polarity BEMF to generate switching pulses for lower hand switches (S2, S4, S6). By using this technique, 1200 mode operation of the PMBLDC motor is achieved. The proposed scheme is simulated in MATLABSimulink software environment and the obtained results are presented to prove the effectiveness of the proposed technique.
永磁无刷直流电动机在高扭矩重量比和简单结构方面提供了比感应和同步电机等其他电机更大的优势,因此考虑到广泛的应用。对于PMBLDCM的控制和操作,采用了基于传感器和无传感器两种技术。基于传感器的技术包括霍尔传感器、编码器等来检测转子的位置,由于这些传感器的温度限制,通常会导致成本增加和可靠性降低。本文提出了一种新的BEMF技术,用于永磁无刷直流电机的无传感器控制。我们知道,每一相位的BEMF波形均匀地分布在正负两半,在这种技术中,BEMF的正极性被分配用于产生开关脉冲,用于逆变器的上手开关(Sl, S3, S5)的换相,负极性BEMF用于产生下手开关(S2, S4, S6)的开关脉冲。利用该技术,实现了永磁无刷直流电机的1200模式运行。在MATLABSimulink软件环境下对所提方案进行了仿真,并给出了仿真结果,验证了所提方案的有效性。
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引用次数: 0
Hardware Implementation of Multilevel Inverter using NR, GA, Bee Algorithms 基于NR、GA、Bee算法的多电平逆变器硬件实现
B. Ganesh Babu, M. Surya Kalavathi
Multilevel Inverters (MLI) are mostly used for medium and high-power applications. MLI generates high quality output voltage by using Selective Harmonic Elimination technique (SHE-PWM). Using Newton-Raphson (NR) method, Genetic algorithm (GA) and Artificial Bee Colony Algorithm (BEE) based SHE-PWM technique is implemented for Cascaded H-Bridge type MLI to generate the five-level output. The proposed algorithms estimate the proper switching angles to eliminate the lower order harmonics. This paper deals with elimination of fifth harmonic compared to all other algorithms mentioned BEE is easy to implement for real -time applications. Simulation results and experiment results are reported for the exactness and effectiveness of the proposed methods.
多电平逆变器(MLI)主要用于中、大功率应用。MLI采用选择性谐波消除技术(SHE-PWM)产生高质量的输出电压。采用Newton-Raphson (NR)方法,采用遗传算法(GA)和基于人工蜂群算法(Bee)的SHE-PWM技术实现级联h桥MLI的五电平输出。该算法估计合适的开关角以消除低阶谐波。本文讨论了五次谐波的消除,与所有其他算法相比,BEE在实时应用中易于实现。仿真结果和实验结果表明了所提方法的准确性和有效性。
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引用次数: 2
Traffic Accidents Analytics in UK Urban Areas using k-means Clustering for Geospatial Mapping 基于k-means聚类的英国城市交通事故分析
Christopher Sinclair, Saptarshi Das
The goal of this paper is to use the unsupervised machine learning method in road accident analytics, especially using k-means clustering to identify patterns and understand the relationships between variables recorded by the UK police department. These include features like number of casualties, number of vehicles, age of vehicle and age bracket of the driver. We aim to describe clusters of accidents based on similarity measures in the features and identify what separates each one.
本文的目标是在道路事故分析中使用无监督机器学习方法,特别是使用k-means聚类来识别模式并理解英国警察部门记录的变量之间的关系。这些特征包括伤亡人数、车辆数量、车辆年龄和驾驶员的年龄段。我们的目标是基于特征中的相似性度量来描述事故集群,并确定每个集群之间的区别。
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引用次数: 3
A Simulation Based Study of using GaN for Switching in Li ion Battery Cell Equalisation Circuits 基于仿真的氮化镓在锂离子电池均衡电路中的开关研究
J. Carter, Zhong Fan, Jun Cao
Li-ion battery packs are vital for electric vehicles, smart homes and smart grid applications. Keeping those large battery packs healthy over long periods of time is beneficial to performance, economics and environmental aspects of using Li-ion cells. Series connected Li-ion cells can become imbalanced over charge discharge cycles due to different operating conditions and manufacturing variations. This imbalance primarily causes loss of usable capacity (driving range in EVs). Cell equalisation circuits can be used to re-balance these cells therefore improving battery health and extending battery life. This paper looks at wide band gap (WBG) semi-conducting switches and if they can be used to improve cell equalisation circuits. WBG switches can operate at much higher frequencies than Si MOSFETS. Simple MATLAB simulations suggest that high frequency switching allows for faster equalisation times, smaller passive components and therefore smaller circuit footprint. A more detailed simulation carried out using manufactures device models in LTSpice show that GaN switches only provide benefits at high frequency and because of the GaN cascade HEMT (High Electron Mobility Transistor) technology that switching losses are still a factor. 1
锂离子电池组对电动汽车、智能家居和智能电网应用至关重要。长时间保持这些大型电池组的健康,对使用锂离子电池的性能、经济性和环境方面都是有益的。由于不同的操作条件和制造工艺的变化,串联的锂离子电池在充放电循环中会出现不平衡。这种不平衡主要导致可用容量(电动汽车的行驶里程)的损失。电池均衡电路可用于重新平衡这些电池,从而改善电池健康并延长电池寿命。本文着眼于宽带隙(WBG)半导体开关,以及它们是否可以用于改进电池均衡电路。WBG开关可以在比Si mosfet高得多的频率下工作。简单的MATLAB仿真表明,高频开关允许更快的均衡时间,更小的无源元件,因此更小的电路占用。在LTSpice中使用制造器件模型进行的更详细的模拟表明,GaN开关仅在高频下提供优势,并且由于GaN级联HEMT(高电子迁移率晶体管)技术,开关损耗仍然是一个因素。1
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引用次数: 0
High PFC Integrated Stage Single Switch AC-DC System for LED Power Driver 用于LED电源驱动的高PFC集成级单开关交直流系统
V. Yadav, A. Verma, Udaykumar R.Yaragatti
LED has replaced the conventional Lighting sources due to its extraordinary characteristics like high efficiency, CRI value, low cost, longevity, easy controlling, easy dimming, etc. LED works either on constant current or constant voltage supply. (a) The AC-DC system driving the LED shall comply with stringent standards such as IEC61000-3-2, Energy star, etc. Many LED driver circuits based on Two-stage, single-stage, or integrated topologies are available to comply with stringent standards. To (b) reduce the cost, size, and volume of the AC-DC system for High power LED driver, an integrated stage LED driver is a popular choice. This paper presents an isolated Integrated stage single switch LED driver circuit. The integrated stage is a combination of the SEPIC and Flyback converter. The single (c) switch is controlled via a quasi sliding mode controller(QSMC) to enhance its driving characteristics, where the outer voltage loop is the PI controller and the inner current loop is the sliding mode controller. A detailed analysis, operation, and control are presented. The proposed topology’s results are verified using MATLAB/SIMULINK environment.
LED以其高效、显色值高、成本低、寿命长、易控制、易调光等特点取代了传统照明光源。LED工作在恒流或恒压供电。(a)驱动LED的交直流系统应符合IEC61000-3-2、能源之星等严格的标准。许多基于两级、单级或集成拓扑结构的LED驱动电路都符合严格的标准。为了降低高功率LED驱动器的交直流系统的成本、尺寸和体积,集成级LED驱动器是一种流行的选择。提出了一种隔离式集成级单开关LED驱动电路。集成级是SEPIC和反激变换器的组合。通过准滑模控制器(QSMC)控制单(c)开关以增强其驱动特性,其中外电压环为PI控制器,内电流环为滑模控制器。给出了详细的分析、操作和控制方法。在MATLAB/SIMULINK环境下对所提出的拓扑结果进行了验证。
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引用次数: 1
Median LMS Control Approach for SPV Grid Integrated Distribution System SPV电网综合配电系统的中值LMS控制方法
Sunaina Singh Seema, Bhim Singh, B. K. Panigrahi
In this paper, the MLMS (Median Least Mean Square) control approach is used for a grid coupled three phase SPV (Solar Photovoltaic) system for improvising the power quality. This three phase SPV grid coupled system consists of two converters as follows: (1) a voltage source converter (VSC) and, (2) a boost converter and loads at the point of common coupling (PCC). Here, the VSC is attached with a SPV array to the utility grid and it balances the grid currents. Moreover, it helps to remove the load current harmonics. Here, the MLMS control evaluates the weight component, which gives the high rate of convergence. In SPV system, the feed-forward term is used for giving the fast dynamic response. The solar PV array Peak is harvested using the P& O (Perturb & Observed) based MPPT technique. This MLMS control of a PV system is simulated at different real time scenario such as, load unbalance and solar insolation change. The grid current harmonics are reduced with in the limit of the IEEE-519 std, while feeding the load to the grid.
本文将中值最小均方控制方法应用于电网耦合三相太阳能光伏发电系统中,以实现系统电能质量的随机化。该三相SPV电网耦合系统由以下两个变换器组成:(1)电压源变换器(VSC)和(2)升压变换器和共耦合点负载(PCC)。在这里,VSC与SPV阵列连接到公用事业电网,并平衡电网电流。此外,它有助于消除负载电流谐波。在这里,MLMS控制评估权重成分,这给了高收敛率。在SPV系统中,为了给出快速的动态响应,采用前馈项。太阳能光伏阵列的峰值是使用基于P& O (Perturb & Observed)的MPPT技术收集的。在负载不平衡和日照变化等不同的实时情况下,对光伏系统的MLMS控制进行了仿真。在向电网供电的同时,电网电流谐波在IEEE-519标准的限制内被降低。
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引用次数: 0
MATLAB Simulation of Space Vector Pulse Width Modulation for 3-level NPC Inverter and 2-level Inverter 空间矢量脉宽调制3电平和2电平的MATLAB仿真
A. Panda, Giribabu Dyanamina, R. Singh
Multilevel inverters have been used in various applications alternative to 2-L inverter due to advantages like reduction in THD. Among modulation techniques, space vector modulation (SVM) is a commonly used method for multilevel inverters. Therefore many advanced implementation algorithms have been proposed by researchers with less complexity. This paper provides an idea of the implementation algorithm for three-level (3-L) space vector modulation (SVM) for N3V. This paper focuses on details analysis of an algorithm based on an equivalent two-level space vector diagram. This paper aims to generate the line voltage of 2-Level VSI and 3-Level NPCI by using 2 level and 3 level space vector modulation technique and compare THD. Simulation on 2-Level and 3-Level inverter prove the validity of the suggested algorithm.
由于THD降低等优点,多电平逆变器已用于替代2升逆变器的各种应用中。在调制技术中,空间矢量调制(SVM)是多电平逆变器常用的调制方法。因此,研究者们提出了许多复杂度较低的高级实现算法。本文提出了一种N3V三电平(3-L)空间矢量调制(SVM)的实现算法。本文重点分析了一种基于等效两级空间矢量图的算法。本文旨在利用2电平和3电平空间矢量调制技术产生2电平VSI和3电平NPCI的线路电压,并比较THD。对二电平和三电平逆变器的仿真验证了该算法的有效性。
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引用次数: 5
A Handy Wireless Charging Prototype for Bio-medical Implantable Devices 生物医学植入装置的便携无线充电原型
M. Kavitha, N. Chakravarthy, D. Reddy
Wireless power transfer technology is emerging fast in the modern era, which turns out to be a broad research area applicable for healthcare systems like biomedical implantable devices. Where, receiver coil is placed inside the human body and transmitter coil is positioned out of the body. In such a system, coil’s size, weight and coupling factors are the critical and important aspects need to be considered. In this paper, a simulation model is designed, whose dimensions are varied under distinct operating conditions. An electromagnetic field analysis is performed to examine the inductive characteristics of WPT coils. The size of the WPT coils is adjusted for good coupling factor and some significant results are reported. Further, to validate the idea, a handy wireless charging prototype is implemented and tested at laboratory level. Some experimental results are obtained and relevant discussions are presented.
无线电力传输技术在现代发展迅速,在生物医学植入式设备等医疗保健系统中具有广阔的应用前景。其中,接收线圈位于人体内部,发送线圈位于体外。在这样的系统中,线圈的尺寸、重量和耦合因素是需要考虑的关键和重要方面。本文设计了一个仿真模型,该模型在不同工况下的尺寸是不同的。对WPT线圈的感应特性进行了电磁场分析。为了获得良好的耦合系数,对WPT线圈的尺寸进行了调整,并取得了一些显著的结果。此外,为了验证这个想法,一个方便的无线充电原型被实现并在实验室水平上进行了测试。得到了一些实验结果,并进行了相关讨论。
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引用次数: 3
Standalone PV-BES Based Synchronous Reluctance Motor Drive for Water Pump 基于PV-BES的独立式水泵同步磁阻电机驱动
Hina Parveen, Utkarsh Sharma, Bhim Singh
This demonstrates a robust and inexpensive pumping system for an uninterrupted rated capacity of water supply. This system offers efficient power management between solar PV array with the battery energy storage (BES) utilizing a synchronous reluctance motor (SYRM) to pump water. In this two stage solar energy conversion system, a DC stage boost converter is employed for driving the PV array at maximum power point (MPP), and a three phase voltage source inverter is used to control of SYRM-pump. A speed sensor less vector control algorithm is used to control the SYRM. Owing to full potential water discharge irrespective of the atmospheric conditions, a BES is used to provide the additional required power. Moreover, in the non-pumping duration hours, the solar PV array’s power is used to charge the BES. In this system, an Incremental conductance (INC) algorithm is destined not only for the PV array to operate at MPP but also to safeguard the BES by ensuring the charging current’s safe limits. This algorithm is responsible for charging the BES whenever solar power is available and trip the PV power based on its SOC (state of charge). The modeling of the overall system is carried in the MATLAB/ Simulink environment. Obtained results show the suitability of the system for the solar pump application.
这证明了一个强大的和廉价的抽水系统,为不间断的额定供水能力。该系统在太阳能光伏阵列和利用同步磁阻电机(SYRM)抽水的电池储能(BES)之间提供高效的电源管理。在该两级太阳能转换系统中,采用直流级升压变换器在最大功率点驱动光伏阵列,采用三相电压源逆变器控制syrm -泵。采用无速度传感器矢量控制算法对SYRM进行控制。由于无论大气条件如何,水都能充分排放,因此使用BES来提供所需的额外功率。此外,在非抽运持续时间内,太阳能光伏阵列的功率用于给BES充电。在该系统中,增加电导(INC)算法不仅保证了光伏阵列在MPP下运行,而且保证了充电电流的安全限值,从而保护了BES。该算法负责在太阳能可用时为BES充电,并根据其SOC(充电状态)跳闸光伏电源。在MATLAB/ Simulink环境下对整个系统进行建模。结果表明,该系统适合于太阳能泵的应用。
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引用次数: 3
期刊
2021 International Conference on Sustainable Energy and Future Electric Transportation (SEFET)
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