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2021 12th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)最新文献

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Improved Indirect Model Predictive Control for Modular Multilevel Converter 模块化多电平变换器的改进间接模型预测控制
Pub Date : 2021-02-02 DOI: 10.1109/PEDSTC52094.2021.9405966
Abolfazl Sheybanifar, S. Masoud Barakati, S. Yousofi-Darmian, Vahid Barahouei, S. Hamed Torabi
Due to the ability to control several parameters by the cost function and the high dynamic response as well as direct modeling, the model predictive control (MPC) is among the best methods for controlling a modular multilevel converter (MMC). In conventional MPC, the optimal value of the cost function is obtained after calculating all switching states. If the number of sub-modules (SMs) increases, the computational volume also increases exponentially, which makes this method impossible to implement. In this paper, an improved indirect model predictive control (IIMPC) is presented to control the parameters of MMC, such as circulating and load currents and capacitor voltage. Moreover, this method can make the computational volume independent from the number of SMs. On the other hand, to control the voltages of the capacitors, a sorting algorithm has been used. The superiority and privilege of the proposed IIMPC are verified by simulation results of a five-level single-phase MMC with four SMs in each arm.
模型预测控制(MPC)具有成本函数控制多个参数、高动态响应和直接建模的能力,是控制模块化多电平变换器(MMC)的最佳方法之一。在传统的MPC中,计算所有切换状态后得到代价函数的最优值。如果子模块(SMs)的数量增加,计算量也会呈指数增长,这使得该方法无法实现。本文提出了一种改进的间接模型预测控制(IIMPC)来控制MMC的循环电流、负载电流和电容电压等参数。此外,该方法可以使计算量与SMs的数量无关。另一方面,为了控制电容器的电压,采用了一种排序算法。仿真结果验证了该方法的优越性和优越性。
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引用次数: 0
New Single-Switch Non-isolated Boost DC-DC Converter with Free Input Current Ripple 具有自由输入纹波的新型单开关非隔离升压DC-DC变换器
Pub Date : 2021-02-02 DOI: 10.1109/PEDSTC52094.2021.9405853
F. Shahir, E. Babaei, Mehrdad Aberoumandazar
This paper presents a new single switch topology for non-isolated boost dc-dc converter based on voltage-lift (VL) technique. The proposed topology has some advantages such as simple structure, achieving to higher voltage gain with wide range variations, higher power density, free input current ripple. For proposed topology, the theoretical analysis is done and its voltage and current gains in continuous current mode (CCM) is extracted. Also, the switch stress is calculated. The proposed topology is compared with some others. Finally, operating of the proposed converter and validity of theoretical analysis are reconfirmed using results in PSCAD/EMTDC.
本文提出了一种新的基于电压提升技术的非隔离升压dc-dc变换器单开关拓扑结构。该拓扑结构简单,具有电压增益大、变化幅度大、功率密度高、输入电流纹波自由等优点。对所提出的拓扑结构进行了理论分析,并提取了其在连续电流模式下的电压和电流增益。并对开关应力进行了计算。将所提出的拓扑与其他拓扑进行了比较。最后,利用PSCAD/EMTDC的实验结果,验证了所提变换器的运行情况和理论分析的有效性。
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引用次数: 3
Wireless Power Transfer System for an Unmanned Aerial Vehicle 一种无人机无线电力传输系统
Pub Date : 2021-02-02 DOI: 10.1109/PEDSTC52094.2021.9405902
Uvir Gordhan, S. Jayalath
An Inductive Power Transfer (IPT) system that can wirelessly charge an Unmanned Aerial Vehicle (UAV) is proposed. The IPT system is modelled such that it can be used to charge the DJI Mavic Pro. The receiver (Rx) coil is designed according to the dimensions of the drone. The transmitter (Tx) coil is a circular planar coil. The system uses a Series – Parallel (S-P) compensation network. The design and simulation done with the aid of finite element analysis software, ANSYS Maxwell. An equivalent circuit is simulated on LT Spice to determine its efficiency. The efficiency of the proposed system is verified experimentally.
提出了一种可以对无人机进行无线充电的感应功率传输系统。IPT系统的模型是这样的,它可以用来给大疆Mavic Pro充电。接收器(Rx)线圈根据无人机的尺寸设计。发射器(Tx)线圈是一个圆形的平面线圈。该系统采用串并联(S-P)补偿网络。利用有限元分析软件ANSYS Maxwell进行了设计和仿真。在ltspice上对等效电路进行了仿真,以确定其效率。实验验证了该系统的有效性。
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引用次数: 4
Bridgeless High Voltage Gain Active PFC Rectifiers with Positive/Negative Output and Low Semiconductor Count 具有正/负输出和低半导体计数的无桥高压增益有源PFC整流器
Pub Date : 2021-02-02 DOI: 10.1109/PEDSTC52094.2021.9405941
Maryam Pourmahdi-torghabe, R. Ghazi, Hamed Heydari-doostabad
This paper proposes two new step-up active rectifiers which can improve the output dc voltage gain and so are suitable for use in any application requiring a dc power supply. They also benefit from a low semiconductor voltage stress, a low number of semiconductor devices operating simultaneously, high power factor, acceptable grid side quality and high efficiency. The proposed rectifiers, referred to as type-I and type-II offer a high voltage gain positive and negative dc voltage, respectively. The performance of the converters is evaluated for ac to dc single phase grid connected power supplies. Finally, experimental results for a 300 W, 110 Vrms to ±400 Vdc prototype are provided in an open-loop system. The obtained results substantiate the theoretical analysis and the applicability of these structures. The converters exhibit the capability for ac to dc power conversion and demonstrate a peak efficiency of 96.3 % and 95.6 % in the positive and the negative outputs, respectively.
本文提出了两种新的升压型有源整流器,它们可以提高输出直流电压增益,因此适用于任何需要直流电源的应用。它们还受益于低半导体电压应力,同时工作的半导体器件数量少,高功率因数,可接受的电网侧质量和高效率。所提出的整流器,称为i型和ii型,分别提供高电压增益正和负直流电压。对单相交直流并网电源变换器的性能进行了评价。最后,在开环系统中给出了300w、110vrms ~±400vdc样机的实验结果。所得结果证实了这些结构的理论分析和适用性。该变换器具有交流到直流功率转换的能力,其正输出和负输出的峰值效率分别为96.3%和95.6%。
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引用次数: 1
Full Soft-Switching Ultra-High Gain DC/DC Converter Using Three-Winding Coupled-Inductor 采用三绕组耦合电感的全软开关超高增益DC/DC变换器
Pub Date : 2021-02-02 DOI: 10.1109/PEDSTC52094.2021.9405852
S. Hasanpour, Mojtaba Forouzesh, Y. Siwakoti
This paper presents a new type of non-isolated single-switch step-up DC/DC converter with continuous input current, low voltage stress, and soft-switching performance, and modular scalability. To achieve an ultra-high voltage gain without a large duty cycle, a Three-Winding Coupled-Inductor (TWCI) along with a unit of Voltage Multiplier Cell (VMC) and Voltage Multiplier Rectifier (VMR) are employed. The energy stored in the leakage inductor is recycled by a regenerative clamp capacitor, limiting the maximum voltage stress across the single power switch. Besides, Zero Current Switching (ZCS) at the turn-on time of the power switch is achieved, and by applying a Quasi-Resonance (QR) operation, the switch turn-off current is also reduced significantly. With the help of the leakage inductor of the TWCI, all diodes can operate under the ZCS condition, which eliminates the reverse recovery losses in the proposed converter. Therefore, the introduced circuit can provide an ultra-high voltage gain under high efficiency. Steady-state analysis, comprehensive comparisons with other related converters, and design considerations are discussed. Finally, a 160 W sample prototype with 200 V output voltage is implemented to justify the theoretical analysis's correctness.
本文提出了一种新型无隔离单开关升压DC/DC变换器,具有输入电流连续、电压应力低、软开关性能和模块化可扩展性。为了在没有大占空比的情况下实现超高电压增益,采用了三绕组耦合电感器(TWCI)以及电压倍增单元(VMC)和电压倍增整流器(VMR)。存储在泄漏电感中的能量由再生钳位电容器回收,限制了单个电源开关的最大电压应力。实现了电源开关导通时的零电流开关(Zero Current Switching, ZCS),并通过准共振(Quasi-Resonance, QR)运算,大大减小了开关关断电流。在TWCI漏电电感的帮助下,所有二极管都可以在ZCS条件下工作,从而消除了所提出的变换器中的反向恢复损耗。因此,所介绍的电路可以在高效率的情况下提供超高的电压增益。讨论了稳态分析、与其他相关变流器的综合比较以及设计注意事项。最后,以输出电压为200v、功率为160w的样机为例,验证了理论分析的正确性。
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引用次数: 1
A Thirteen-Level Flying Capacitor based Single-Phase Inverter with Self-Balancing Capability 具有自平衡能力的十三电平飞容单相逆变器
Pub Date : 2021-02-02 DOI: 10.1109/PEDSTC52094.2021.9405968
J. F. Ardashir, Mahdi Gasemi, Behrouz Rozmeh, S. Peyghami, F. Blaabjerg
This paper proposes a novel Symmetric Multilevel Flying Capacitor Inverter (SMFCI) structure using a two dc sources and four capacitors. The proposed single-phase 13-level inverter has the capability to increase the output voltage with fewer semiconductor components compared to the modern structures. The Phase Disposition Sinusoidal Pulse Width Modulation (PDSPWM) strategy is utilized to produce switching signals. Using this modulation scheme facilitate the SMFCI with self-balancing capability of voltage of capacitors. The SMFCI is also capable of transferring reactive power through R-L loads without any limitations. Furthermore, the inverter can properly generate 5-level, 9-level and 11-level output voltage for different applications. Moreover, a comparison with modern 13-level inverters is provided in terms of the number active and passive components in order to show the advantages of the proposed structure. The performance of the converter is illustrated through simulations for different operating conditions for resistive and resistive-inductive loads.
提出了一种采用两个直流电源和四个电容的对称多电平飞容逆变器结构。与现代结构相比,所提出的单相13电平逆变器具有用更少的半导体元件增加输出电压的能力。采用相位配置正弦脉宽调制(PDSPWM)策略产生开关信号。采用这种调制方式,可以使SMFCI具有电容电压的自平衡能力。SMFCI还能够通过R-L负载不受任何限制地传输无功功率。此外,逆变器可以正常产生5电平,9电平和11电平的输出电压,适用于不同的应用。此外,根据有源和无源元件的数量,提供了与现代13电平逆变器的比较,以显示所提出结构的优点。通过对不同工作条件下电阻性和阻感性负载的仿真,说明了变换器的性能。
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引用次数: 3
A Hybrid SMC Strategy for Sequential Switching Shunt Regulator 顺序开关并联稳压器的混合SMC策略
Pub Date : 2021-02-02 DOI: 10.1109/PEDSTC52094.2021.9405909
Mohammad Amir Enayatifar, A. Abrishamifar
This paper deals with the sequential switching shunt regulator (S3R) which widely used in high power GEO satellites owning to its high reliability and simplicity, however This regulation method has problems caused by its parasitic capacitance (CSA) and conventional control methods. Here it is suggested a hybrid sliding mode control (SMC) strategy for S3R to improve the main bus voltage regulation along with lower current fluctuations. Additionally, an architecture is proposed for solar array sections to increase the reliability of the system and to achieve targets mentioned above. The performance of the proposed method is investigated by MATLAB/Simulink.
时序开关并联稳压器(S3R)以其高可靠性和简单性被广泛应用于大功率地球同步轨道卫星,但该稳压器存在寄生电容(CSA)和常规控制方法等问题。本文提出了一种用于S3R的混合滑模控制(SMC)策略,以改善母线电压调节,同时降低电流波动。此外,还提出了太阳能电池阵列部分的结构,以提高系统的可靠性并实现上述目标。通过MATLAB/Simulink对该方法的性能进行了研究。
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引用次数: 0
Hybrid Control for a Boost DC-DC Converter With Average Dwell Time 具有平均停留时间的升压DC-DC变换器的混合控制
Pub Date : 2021-02-02 DOI: 10.1109/PEDSTC52094.2021.9405937
Seyed Hamed Hashemi, N. Pariz
This paper peruses the voltage control of a boost DC-DC converter. The hybrid model of the converter is utilized to introduce a new switching control law, which regulates the output voltage of the converter. In this switching control law an average dwell time constraint is considered. This suggestion guarantees the exponential stability of a desired output voltage value. Furthermore, in the proposed switching control law, there exist no Zeno solutions, since the existence of the average dwell time constraint. Moreover, in power converters, two significant concerns are switching loss and electromagnetic interference resulting from numerous rates of variations of voltage and current. Therefore, the salient features of the proposed controller are the mitigation of the switching rate as well as the regulation of the output voltage. Finally, simulation experiments are followed through on a boost converter to validate the effectiveness and superiority of the proposed control strategy.
本文研究升压DC-DC变换器的电压控制。利用变换器的混合模型,引入一种新的开关控制律来调节变换器的输出电压。在该切换控制律中,考虑了平均停留时间约束。这一建议保证了期望输出电压值的指数稳定性。此外,由于存在平均停留时间约束,所提出的切换控制律不存在芝诺解。此外,在功率转换器中,两个重要的问题是开关损耗和由电压和电流的多种变化率引起的电磁干扰。因此,所提出的控制器的显著特征是降低开关速率以及调节输出电压。最后,对升压变换器进行了仿真实验,验证了所提控制策略的有效性和优越性。
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引用次数: 0
Voltage Balancing of Capacitors Using Kalman Filter in Modular Multilevel Converters without Current Sensors 基于卡尔曼滤波的无电流传感器模块化多电平变换器电容器电压平衡
Pub Date : 2021-02-02 DOI: 10.1109/PEDSTC52094.2021.9405891
M. B. Hashkavayi, S. M. Barakati, S. Y. Darmian, Vahid Barahouei, A. Khajeh
Modular multilevel converters (MMCs) play an essential role in power conversion for medium and high voltage industrial applications. These types of converters use many sensors for the process of measuring and sorting the voltage of their capacitors, but this increases cost and hardware complexity, as well as decreases reliability. One of the most widely used methods for voltage sorting of capacitors in MMCs is based on current measuring and detecting the current sign of each arm. This paper uses the capacitor voltages estimation scheme by the Kalman filter (KF) algorithm at each sampling time. Moreover, with the difference between the total voltage of the capacitors in each arm during two consecutive processes, their sorting is done without the current sensor. Therefore, by the proposed scheme, current sensors are entirely removed from the arms, and the MMC control process is implemented by only two voltage sensors in a phase branch. The simulation results in the MATLAB Simulink environment confirm the accuracy of the proposed method.
模块化多电平变换器(mmc)在中高压工业应用的功率转换中起着至关重要的作用。这些类型的转换器使用许多传感器来测量和分类其电容器的电压,但这会增加成本和硬件复杂性,并降低可靠性。基于电流测量和检测各臂电流信号是mmc中应用最广泛的电容器电压分选方法之一。本文采用卡尔曼滤波(KF)算法对各采样时刻的电容电压进行估计。此外,在两个连续的过程中,每个臂上电容器的总电压之间的差异,它们的分类是在没有电流传感器的情况下完成的。因此,通过该方案,电流传感器完全从臂上移除,并且MMC控制过程仅由相位支路中的两个电压传感器实现。在MATLAB Simulink环境下的仿真结果验证了所提方法的准确性。
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引用次数: 3
More Electric Aircraft Fault Current Protection: A Review 多电飞机故障电流保护综述
Pub Date : 2021-02-02 DOI: 10.1109/PEDSTC52094.2021.9405947
A. Bakhshi, M. Bigdeli, M. Moradlou, H. M. Cheshmehbeigi
By development of more electric aircraft (MEA), it is essential to have an overview of recently presented methods to protect MEA against fault current. This paper gives an overview of possible faults that may be occurs in the electric power system of more electric aircraft. Various functionalities and fault limiting solutions are also covered. Besides, the paper focuses on the main challenges for improving the reliability of the distribution system in MEA based on protection functions such as fuses, circuit breakers, and fault current limiters. Finally, the suggestions are surveyed to enhance electric power system performance of MEA.
随着电动飞机(MEA)的发展,有必要对最近提出的MEA故障电流保护方法进行概述。本文概述了多电动飞机电力系统可能出现的故障。还涵盖了各种功能和故障限制解决方案。此外,本文还重点讨论了基于熔断器、断路器和故障限流器等保护功能的MEA中提高配电系统可靠性所面临的主要挑战。最后,提出了提高MEA电力系统性能的建议。
{"title":"More Electric Aircraft Fault Current Protection: A Review","authors":"A. Bakhshi, M. Bigdeli, M. Moradlou, H. M. Cheshmehbeigi","doi":"10.1109/PEDSTC52094.2021.9405947","DOIUrl":"https://doi.org/10.1109/PEDSTC52094.2021.9405947","url":null,"abstract":"By development of more electric aircraft (MEA), it is essential to have an overview of recently presented methods to protect MEA against fault current. This paper gives an overview of possible faults that may be occurs in the electric power system of more electric aircraft. Various functionalities and fault limiting solutions are also covered. Besides, the paper focuses on the main challenges for improving the reliability of the distribution system in MEA based on protection functions such as fuses, circuit breakers, and fault current limiters. Finally, the suggestions are surveyed to enhance electric power system performance of MEA.","PeriodicalId":351532,"journal":{"name":"2021 12th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125846435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
期刊
2021 12th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)
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