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2022 13th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)最新文献

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Discrete-Time Modeling of Dual Active Bridge Converter Benefiting Extended Phase Shift Modulation Based on Generalized Averaged Model 基于广义平均模型的扩展相移调制双有源桥式变换器离散时间建模
Pub Date : 2022-02-01 DOI: 10.1109/pedstc53976.2022.9767434
Alireza Amiri Khorhe, M. Bina, Reza Amjadifard
In bidirectional power conversion applications, dual active bridge converters (DABCs) have been widely used. Benefiting conventional methods for modeling this type of converter always has many challenges and difficulties. This paper presents the discrete-time modeling of a DABC that benefits extended phase shift (EPS) modulation. The proposed discrete-time model is based on the generalized averaged model. The proposed model is ideal for implementing digital controllers due to the elimination of exponential terms. In addition, in this paper, the switched model of the converter is investigated to verify the proposed model.
在双向功率转换应用中,双有源桥式转换器(DABCs)得到了广泛的应用。利用传统的方法对这种类型的变换器进行建模一直存在许多挑战和困难。本文提出了有利于扩展相移(EPS)调制的DABC的离散时间建模方法。提出的离散时间模型是基于广义平均模型的。由于消除了指数项,所提出的模型对于实现数字控制器是理想的。此外,本文还对变换器的开关模型进行了研究,以验证所提出的模型。
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引用次数: 0
Single Inductor Bidirectional Multi-Input Converter With Continuous Battery Current Based On Integration of Buck and Three Port Boost Topologies 基于Buck和三端口升压拓扑集成的电池连续电流单电感双向多输入变换器
Pub Date : 2022-02-01 DOI: 10.1109/pedstc53976.2022.9767334
Erfan Meshkati, M. Packnezhad, H. Farzanehfard
In this paper, a novel non-isolated bidirectional multi-input DC-DC converter with continuous battery current is proposed specifically for photovoltaic (PV)-battery hybrid power system application. The converter combines two boost topologies to deliver power from the energy generator source (EGS) and energy storage source (ESS) to the output while two buck topologies are integrated to transfer energy from EGS and the output to ESS. Furthermore, only a single inductor is utilized for all operating modes which leads to smaller volume and higher power density. Hence, power conversion in all operating modes is performed in a single stage and consequently the conduction loss is reduced. The battery current unlike many converters based on three port boost topology is continuous since the power is delivered between EGS and ESS by an integrated buck structure which extends battery life time. Moreover, the power is directly transferred between different ports red without power reprocessing which contributes to the improved converter efficiency. The proposed converter is analyzed for both step-up and step-down operating modes in details and a 300 W converter is simulated to verify the main converter features and the theoretical analysis.
本文提出了一种新型的非隔离双向多输入连续电池电流DC-DC变换器,用于光伏-电池混合动力系统。转换器结合了两种升压拓扑,将能量从能量发生器源(EGS)和能量存储源(ESS)传输到输出端,同时集成了两种降压拓扑,将能量从EGS和输出端传输到ESS。此外,所有工作模式仅使用一个电感器,从而导致更小的体积和更高的功率密度。因此,所有工作模式下的功率转换在单级进行,从而降低了传导损耗。与许多基于三端口升压拓扑的转换器不同,电池电流是连续的,因为电源通过集成的降压结构在EGS和ESS之间传递,从而延长了电池寿命。此外,功率在不同端口之间直接传输,无需再处理,有助于提高变换器的效率。对该变换器进行了升压和降压两种工作模式的详细分析,并对300w变换器进行了仿真,验证了变换器的主要特性和理论分析。
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引用次数: 3
A Quadratic Boost Converter Suitable for Photovoltaic Solar Panel 一种适用于光伏太阳能电池板的二次升压变换器
Pub Date : 2022-02-01 DOI: 10.1109/pedstc53976.2022.9767407
Saeed Mahdizadeh, A. Tavakoli, E. Afjei
In this study, a new high gain non-isolated DC-DC converter has been introduced. The structure of the converter has been made up of a Boost and a Buck-Boost converter which the disadvantages of the cascaded form have been removed. The continuous input current, high efficiency, and high voltage gain are the features which make it suitable for applying in renewable applications. The analysis has been done in Continuous current mode and the mathematical relations have been expressed. Moreover, two comparisons have been done based on the non-ideal voltage gain and efficiency between the introduced converter and other ones. Furthermore, the efficiency and voltage gain behavior have been analyzed for different output powers and the results have been illustrated. Finally, the topology has been simulated by PLECS and the results have been shown.
本文介绍了一种新型的高增益非隔离DC-DC变换器。变换器的结构由一个升压和一个降压变换器组成,消除了级联形式的缺点。它具有输入电流连续、效率高、电压增益高等特点,适合应用于可再生能源领域。在连续电流模式下进行了分析,并给出了数学关系。并在非理想电压增益和效率的基础上,与其他变换器进行了对比。此外,还分析了不同输出功率下的效率和电压增益行为,并对结果进行了说明。最后,利用PLECS对该拓扑结构进行了仿真,并给出了仿真结果。
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引用次数: 0
Design of photovoltaic inverter with active filter capability 具有有源滤波能力的光伏逆变器设计
Pub Date : 2022-02-01 DOI: 10.1109/pedstc53976.2022.9767435
Fatemeh Gerami, M. Saradarzadeh
Since renewable sources are installed at the load point through power electronic converters, in addition to providing active power, can be used for harmonic compensation, reactive power compensation and other issues to improve network performance. One of the main problems in creating such compensators due to the lack of direct access to non-linear loads current is measuring the amount of injected harmonics in the network. In this paper, by adding the active filter capability to a photovoltaic inverter, harmonics and reactive power compensation are obtained. Also, the photovoltaic converter has been changed from a two-stage structure to a single-stage one offering the simplification and lower cost of the converter structure. To overcome the problem of measuring nonlinear load harmonics, a new method of measuring the load harmonics from PCC voltage and regulating the desired compensation for the converter is proposed. The converter and control system are simulated in MATLAB SIMULINK software, where the results show the feasibility and proper performance of the proposed method.
由于可再生能源通过电力电子变流器安装在负荷点,因此除了提供有功功率外,还可用于谐波补偿、无功补偿等问题,以改善电网性能。由于缺乏对非线性负载电流的直接访问,制造这种补偿器的主要问题之一是测量网络中注入的谐波量。本文通过在光伏逆变器中加入有源滤波能力,得到了谐波和无功补偿。此外,光伏转换器已从两级结构改为单级结构,提供了转换器结构的简化和更低的成本。为了克服测量非线性负载谐波的问题,提出了一种从PCC电压测量负载谐波并调节变流器补偿的新方法。在MATLAB SIMULINK软件中对变换器和控制系统进行了仿真,结果表明了该方法的可行性和良好的性能。
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引用次数: 0
Non-Isolated Single-Phase Trans-Z-Source Converter for Dynamic Voltage Restorer Application 用于动态电压恢复器的非隔离单相反z源变换器
Pub Date : 2022-02-01 DOI: 10.1109/pedstc53976.2022.9767497
S. Mousavi, E. Babaei, D. Alizadeh
A dynamic voltage restorer (DVR) based on Z-source converter is proposed in this paper. The modified Z-source converter used for the proposed DVR has features such as common ground between input and output, buck out-of-phase operation mode and buck/boost in-phase operation mode. The most important feature that distinguishes the proposed DVR from its counterparts is the ability to buck in-phase that make it possible to compensate for voltage sag under 50% without extra switches. The proposed Z-source converter has a coupled inductor. Therefore, in addition to the duty cycle by adjusting the turn ratio, the desired voltage is generated at the output. As a result, the proposed DVR can compensate for voltage sag and swell in a wide range. The Z-source converter is studied in various operation modes to calculate its voltage gain. The simulation results of the proposed DVR are presented to confirm its performance in PSCAD software.
提出了一种基于z源变换器的动态电压恢复器。改进后的z源变换器具有输入输出共地、降压同相工作模式和降压/升压同相工作模式等特点。将该DVR与同类产品区分开来的最重要特征是具有同相降压能力,这使得在不需要额外开关的情况下补偿50%以下的电压凹陷成为可能。所提出的z源变换器具有一个耦合电感。因此,除了通过调节匝比产生占空比外,在输出端产生所需的电压。因此,所提出的DVR可以在很大的范围内补偿电压的跌落和膨胀。研究了z源变换器在不同工作模式下的电压增益。最后给出了该DVR在PSCAD软件中的仿真结果,验证了其性能。
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引用次数: 1
A New Index for Reliability Assessment of Power Semiconductor Devices: IGBTs 功率半导体器件可靠性评估的新指标:igbt
Pub Date : 2022-02-01 DOI: 10.1109/pedstc53976.2022.9767227
Adel Nazemi Babadi, M. Bina, Reza Amjadifard
Mechanical and thermal stresses in harsh environments makes reliability assessment of high power converters more crucial. Power semiconductor devices are the most susceptible components in power converters and any reliability assessment can be done using condition monitoring of these components with high accuracy and simplicity. In this paper, a novel reliability index will be defined for Predictive Maintenance (PM) applications using data-driven algorithms. The best performance precursors to monitor the conditions of the power semiconductor devices will be selected. Then, Replicator Neural Network (RNN), as a semisupervised machine learning algorithm, will be used to develop a normal behavior model of the power Insulated Gate Bipolar Transistor (IGBT). Finally, real-time monitored data is feed into the model to calculate the Reconstruction Error (RE) in real-time. In steady state and dynamics operating conditions, proposed reliability index will be calculated using two indexes named as Risk of Anomaly (RoA) and Anomaly Rate (AR). This reliability index does not need prior failure or repair data (frequency and duration) and can contain any uncertainty in different operating conditions of the converter.
恶劣环境下的机械和热应力使得高功率变换器的可靠性评估变得更加重要。功率半导体器件是功率变换器中最易受影响的元件,任何可靠性评估都可以通过对这些元件进行高精度和简单的状态监测来完成。本文将使用数据驱动算法为预测性维护(PM)应用定义一种新的可靠性指标。将选择性能最好的前驱体来监测功率半导体器件的状况。然后,复制神经网络(RNN)作为一种半监督机器学习算法,将用于开发功率绝缘栅双极晶体管(IGBT)的正常行为模型。最后,将实时监测数据输入到模型中,实时计算重构误差。在稳态和动态工况下,采用异常风险(RoA)和异常率(AR)两个指标计算可靠性指标。该可靠性指标不需要事先故障或修理数据(频率和持续时间),并且可以包含转换器在不同运行条件下的任何不确定性。
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引用次数: 0
Real-Time Controller-Hardware-in-the-Loop Testing of Power Electronics Converters 电力电子变换器的实时控制器-硬件在环测试
Pub Date : 2022-02-01 DOI: 10.1109/PEDSTC53976.2022.9767506
F. Mohammadi, Rasoul Bok, M. Hajian
In this paper, real-time testing of four non-isolated power electronics converters, including buck, boost, buck-boost, and Ćuk converters, using the Controller-Hardware-in-the-Loop (C-HIL) platform is presented. Verification of such converters is mainly associated with high complexity that incurs higher costs since a series of long simulations is required to verify their performance and behavior. Therefore, a trade-off occurs between the performance and cost while using the C-HIL platform. The main aim of this study is to show the feasibility of the proposed real-time implementation based on two LAUNCHXL-F28379D development kits, without using expensive Hardware-in-the-Loop (HIL) systems and commercially available real-time simulators.
本文介绍了利用控制器-硬件在环(C-HIL)平台对降压、升压、降压-升压和Ćuk四种非隔离型电力电子变换器进行实时测试的方法。这种转换器的验证主要与高复杂性相关,因为需要一系列长时间的模拟来验证其性能和行为,从而导致更高的成本。因此,在使用C-HIL平台时,需要在性能和成本之间进行权衡。本研究的主要目的是展示基于两个LAUNCHXL-F28379D开发套件的实时实现的可行性,而不使用昂贵的硬件在环(HIL)系统和市售的实时模拟器。
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引用次数: 5
A Novel Sensorless Voltage Multiplier Inverter for Electric Vehicle Application 一种用于电动汽车的新型无传感器电压倍增逆变器
Pub Date : 2022-02-01 DOI: 10.1109/pedstc53976.2022.9767479
A. Azimi, Aryorad Khodaparast, Milad Rasouli, J. Adabi
This article introduces a novel multilevel inverter with a reduced number of circuit components suitable for electric vehicle application. The proposed voltage multiplier converter can generate nine voltage levels twice the input DC one. This single-source inverter is also applicable for transferring the power generated by renewable energy sources to the power grid. The nearest level control strategy helps the operation of the topology. Self-voltage balancing ability of the circuit capacitors without using any sensors along its low number of circuit devices are the significant merits of this structure. Furthermore, a detailed survey of the operational requirements for comparing the proposed topology to the conventional ones is discussed in this paper. Additionally, the performance of the proposed topology is verified through both simulation and experimental results, reaching an efficiency of 94.74 percent for the intended operating point.
本文介绍了一种适用于电动汽车的电路元件数量较少的新型多电平逆变器。所提出的电压倍增变换器可以产生9个电压电平,是输入直流电平的两倍。这种单源逆变器也适用于将可再生能源产生的电力输送到电网。最近电平控制策略有助于拓扑的操作。该结构的显著优点是电路电容器不需要任何传感器而具有自电压平衡能力,电路器件数量少。此外,本文还详细讨论了将所提出的拓扑结构与传统拓扑结构进行比较的操作要求。此外,通过仿真和实验结果验证了所提出拓扑的性能,在预期工作点达到了94.74%的效率。
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引用次数: 0
Tan-Sun Transformation based Virtual Inductance Control Loop for Unbalanced Power Sharing of Islanded AC Microgrids 基于Tan-Sun变换的孤岛交流微电网不平衡电力共享虚拟电感控制回路
Pub Date : 2022-02-01 DOI: 10.1109/pedstc53976.2022.9767524
Moein Aldin Parazdeh, M. Eldoromi, A. M. Birjandi
In this paper, a hierarchical control scheme, including a Tan-Sun coordinate system primary control structure, for islanded AC Microgrids with unbalanced conditions is presented. The proposed control strategy involves the application of the Closed-loop Initial Phase Detection Adaptive (CIPDA) system based on the Tan-Sun coordinate system in each distributed generation (DG) unit. Furthermore, an adjustable Notch Filter (ANF) with Microgrid frequency is employed for the unbalanced currents detection unit. The traditional droop control method is presented through using Proportional-Integral controller (PI) for the regulation of voltage and current in each unit as well as the determination virtual inductance (DVI) for the opposite droop relation between the unbalanced power, negative-sequence virtual inductance, and transient coupling unit to determine the opposite droop reference. The negative-sequence virtual impedance unit generates a negative-sequence voltage reference using the Tan-Sun inverse matrix for the switching units by receiving the valid inductance from the DVI unit. The results obtained from simulation in the environment of MATLAB/Simulink software confirm the correct operation of the proposed control structure under unbalanced conditions.
针对具有不平衡状态的孤岛交流微电网,提出了一种包含Tan-Sun坐标系主控制结构的分级控制方案。提出的控制策略包括在每个分布式发电机组中应用基于Tan-Sun坐标系的闭环初始相位检测自适应(CIPDA)系统。不平衡电流检测单元采用微网频率可调陷波滤波器(ANF)。传统的下垂控制方法是通过比例积分控制器(PI)对各单元的电压和电流进行调节,以及不平衡功率、负序虚电感和瞬态耦合单元之间的反向下垂关系确定虚电感(DVI)来确定反向下垂基准。负序虚阻抗单元通过接收来自DVI单元的有效电感,利用Tan-Sun逆矩阵为开关单元生成负序参考电压。在MATLAB/Simulink软件环境下的仿真结果证实了所提出的控制结构在不平衡条件下的正确运行。
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引用次数: 0
Speed Control of Brushless Doubly Fed Induction Machine Drive Based on Model Reference Adaptive System 基于模型参考自适应系统的无刷双馈感应电机驱动速度控制
Pub Date : 2022-02-01 DOI: 10.1109/pedstc53976.2022.9767330
M. Etemadi, H. M. Hesar, M. A. Khoshhava
Recently, according to the valuable advantages of Brushless Doubly Fed Induction Machines (BDFIMs), they have attracted the attention of numerous researches. BDFIMs have shown appropriate operation in industrial variable speed drives. This paper proposes a Model Reference Adaptive System (MRAS) is proposed for speed control of BDFIMs. This controller in combination with a Direct Torque and flux Controller (DTC) provides robust and fast dynamic performance to the BDFIM drive system. This article also proposes the Maximum Torque per Inverter Ampere (MTPIA) strategy for BDFIM drive systems. In the proposed strategy, in order to minimize the control winding current, the d-axis reference current of this winding is controlled at zero. The simulation results confirm that the proposed control strategy has significantly improved the dynamic performance of the BDFIM drive in various conditions such as reference speed alterations.
近年来,由于无刷双馈感应电机(bdfim)的宝贵优势,引起了众多研究的关注。bdfim在工业变速驱动器中表现出良好的运行效果。本文提出了一种模型参考自适应系统(MRAS)用于bdfim的速度控制。该控制器与直接转矩和磁链控制器(DTC)相结合,为BDFIM驱动系统提供了强大而快速的动态性能。本文还提出了BDFIM驱动系统的最大转矩/逆变器安培(MTPIA)策略。在该策略中,为了使控制绕组电流最小,将该绕组的d轴参考电流控制为零。仿真结果表明,所提出的控制策略显著改善了BDFIM驱动器在参考转速变化等多种工况下的动态性能。
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引用次数: 0
期刊
2022 13th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)
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