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2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia)最新文献

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Small-signal Impedance Model of an Inductive Power Transfer System Using LCC-LCC Compensation 采用LCC-LCC补偿的感应功率传输系统的小信号阻抗模型
Pub Date : 2023-05-22 DOI: 10.23919/ICPE2023-ECCEAsia54778.2023.10213983
Chaoqun Qi, Guangce Zheng, Xinlin Wang, Xiaoxuan Ji, Minfan Fu
Unregulated inductive power transfer systems are widely adopted for wireless charging scenarios. Such a system is usually cascaded with a dc/dc converter for input or output regulation. The overall system stability needs an in-depth study of the terminal impedance from the small signal perspective. This paper focuses on the impedance model of an LCC-LCC compensated system. An equivalent circuit model is built and used to explicitly derive the input and output impedance. The experiment results show that the model is simple and accurate up to 1/5 of the switching frequency.
非调节感应功率传输系统被广泛应用于无线充电场景。这样的系统通常与dc/dc转换器级联,用于输入或输出调节。整个系统的稳定性需要从小信号的角度对终端阻抗进行深入研究。本文主要研究LCC-LCC补偿系统的阻抗模型。建立了等效电路模型,用于显式推导输入和输出阻抗。实验结果表明,该模型简单,精度可达开关频率的1/5。
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引用次数: 0
A Single-Phase Seven-Level Inverter With Triple Boosting Ability 具有三升压能力的单相七电平逆变器
Pub Date : 2023-05-22 DOI: 10.23919/icpe2023-ecceasia54778.2023.10213684
Dai-Van Vo, Minh‐Khai Nguyen, Truong-Duy Duong, Van-Cuong Bui, Y. Lim, Joon-Ho Choi
This paper proposes a new seven-level inverter for a single-phase system. The proposed topology uses only eight switches, in which the other four switches act as H-bridge, and the others participate in a step-up converter. By applying the switched-capacitor method, three capacitors are connected to the DC source to produce seven-level of voltage, and the output voltage can be stepped up to three times. A comparison study was made to evaluate the proposed seven-level inverter with other seven-level inverters. Finally, experimental results are shown to verify the effectiveness of the proposed seven-level inverter.
本文提出了一种新型的七电平单相逆变器。所提出的拓扑结构仅使用8个开关,其中其他4个开关充当h桥,其他开关参与升压转换器。采用开关电容法,将3个电容接在直流电源上,产生7级电压,输出电压最高可升压3倍。并与其他七电平逆变器进行了比较研究。最后,通过实验验证了所提出的七电平逆变器的有效性。
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引用次数: 0
Impedance Identification Signal Excitation for Series-End Winding Motor System 串联端绕组电机系统阻抗识别信号激励
Pub Date : 2023-05-22 DOI: 10.23919/ICPE2023-ECCEAsia54778.2023.10213550
H. Qu, Boyang Li, Min Zhou, Dong Jiang, Wei Sun
At present, the study of battery impedance mainly focuses on off-line operating conditions, which cannot reflect the battery status online in real time. In this article, an online real-time battery impedance monitoring method is proposed with the traction inverter. This system allows superimposing an AC excitation signal of the desired frequency on the DC side without affecting the normal operation of the motor. Another advantage of this method is that no additional excitation device is needed. The amplitude and frequency of the signal are controlled by the motor drive system. Simulation and experiment are carried out to verify the feasibility of this novel method.
目前对电池阻抗的研究主要集中在离线工况下,无法实时反映电池在线状态。本文提出了一种基于牵引逆变器的电池阻抗在线实时监测方法。该系统允许在直流侧叠加所需频率的交流励磁信号,而不会影响电机的正常运行。这种方法的另一个优点是不需要额外的激励装置。信号的幅值和频率由电机驱动系统控制。通过仿真和实验验证了该方法的可行性。
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引用次数: 0
A modular high-voltage pulse generator based on transformer charging with high boosting capability and low-voltage dc input 一种基于变压器充电的模块化高压脉冲发生器,具有高升压能力和低压直流输入
Pub Date : 2023-05-22 DOI: 10.23919/ICPE2023-ECCEAsia54778.2023.10213726
M. Feizi, B. Vermulst
By applying repetitive and high-voltage pulses across a specific medium like a reactor or a chamber, a transient plasma is generated which can be used for various applications including water treatment, air purification, and food sterilization. In order to generate the aforementioned pulses, in this paper, a modular high-voltage pulse generator (HVPG) based on cascaded full-bridge sub-modules (FB-SMs) and transformer-based charging is proposed. By utilizing transformer-based charging, the need for a complex balancing circuit with numerous sensors is eliminated and all capacitors are charged incessantly via an uninterruptible charging circuit. The proposed topology has a high boosting gain and is able to charge all capacitors from a low-voltage dc input through the use of an inverter, transformer network, and voltage multiplier circuits. The FB-SMs can provide bipolar and variable voltage pulses, as well as modularity, both benefiting the efficient and cost-effective generation of plasma.The operation principle and the modulation strategy of the proposed HVPG is analyzed and verified by the simulation results using PLECS software.
通过在特定介质(如反应器或腔室)上施加重复的高压脉冲,产生瞬态等离子体,可用于各种应用,包括水处理,空气净化和食品灭菌。为了产生上述脉冲,本文提出了一种基于级联全桥子模块和变压器充电的模块化高压脉冲发生器(HVPG)。通过利用基于变压器的充电,消除了对具有众多传感器的复杂平衡电路的需求,并且通过不间断充电电路对所有电容器进行不间断充电。所提出的拓扑结构具有很高的升压增益,并且能够通过使用逆变器、变压器网络和电压乘法器电路从低压直流输入对所有电容器充电。FB-SMs可以提供双极和可变电压脉冲,以及模块化,都有利于高效和经济地产生等离子体。利用PLECS软件,分析了所提出的HVPG的工作原理和调制策略,并通过仿真结果进行了验证。
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引用次数: 0
Design and Simulation Analysis of Intercell Transformer based on Five-level T-type Inverter 基于五电平t型逆变器的电池间变压器设计与仿真分析
Pub Date : 2023-05-22 DOI: 10.23919/ICPE2023-ECCEAsia54778.2023.10213730
Yu Han, Shanshan Wang, Xuanxi Liu, Hanyoung Bu, Dongmin Choi, Younghoon Cho
To improve the power density of the five-level T-type inverter, a three-phase intercell transformer (ICT) is proposed. The three-phase ICT is the integration of three separate coupled inductors of the proposed inverter on a single core. The ICT created by the coupled inductor often does not alter the output current but does lessen the current ripple in the windings. It also reduces losses, and with the smaller size, the power factor of the ICTs can be much higher than that of the inductor. The paper analyzes the structure of the six coil core, and an equivalent model of the magnetic circuit is established. The method was optimally analyzed by coupled simulation of Maxwell and Simplorer. Furthermore, this result is further verified in the PSIM simulation.
为了提高五电平t型逆变器的功率密度,提出了一种三相电池间变压器(ICT)。三相ICT是将所提出的逆变器的三个独立耦合电感集成在单个核心上。耦合电感产生的ICT通常不会改变输出电流,但会减少绕组中的电流纹波。它还减少了损耗,并且由于尺寸较小,ict的功率因数可以比电感的功率因数高得多。分析了六线圈铁芯的结构,建立了磁路的等效模型。通过Maxwell和simplover的耦合仿真对该方法进行了优化分析。并在PSIM仿真中进一步验证了这一结果。
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引用次数: 0
Phase-Shifted Full-Bridge Converter with an Improved Coupled Inductor Rectifier 带改进耦合电感整流器的相移全桥变换器
Pub Date : 2023-05-22 DOI: 10.23919/ICPE2023-ECCEAsia54778.2023.10213657
Jae-Hyun Ahn, Jae-Kuk Kim
A phase-shifted full-bridge (PSFB) converter with coupled inductor rectifier (CIR) structure has the advantage that eliminate freewheeling current in the primary side of the PSFB converter. However, during freewheeling period, the output current flows through high-voltage-rated diodes, resulting in large conduction loss. Also, the converter should be designed with a small magnetizing inductance to achieve zero-voltage switching (ZVS) for the lagging-leg switches, resulting in increased transformer loss. This article proposes a modified PSFB converter to mitigate the drawbacks of the conventional CIR PSFB converter. By employing two diodes in the secondary side, the output current is transferred to the primary side during the freewheeling period, facilitating ZVS for the lagging-leg switches. Moreover, the output current during the freewheeling period flows through the low-voltage-rated diodes. Therefore, the proposed converter achieves high efficiency. The performance of the proposed converter was verified using prototypes with 320–400-V input and 56-V/700-W output specifications.
采用耦合电感整流(CIR)结构的移相全桥(PSFB)变换器具有消除PSFB变换器一次侧自由流动电流的优点。然而,在自由转动期间,输出电流流经高压额定二极管,导致大的导通损耗。此外,变换器应设计小的磁化电感,以实现滞后腿开关的零电压开关(ZVS),从而增加变压器损耗。本文提出了一种改进的PSFB转换器,以减轻传统CIR PSFB转换器的缺点。通过在二次侧使用两个二极管,输出电流在自由转动期间转移到一次侧,促进了滞后腿开关的零电压转换。此外,在自由转动期间的输出电流流过额定低压二极管。因此,所提出的变换器具有较高的效率。采用320-400-V输入和56-V/700-W输出规格的样机验证了所提出的转换器的性能。
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引用次数: 0
Experimental Investigation and Analytical Modeling of Half-Bridge Switching Losses in Reconfigurable Lithium-Ion Cells 可重构锂离子电池半桥开关损耗的实验研究与分析建模
Pub Date : 2023-05-22 DOI: 10.23919/ICPE2023-ECCEAsia54778.2023.10213901
Christian Hanzl, J. Stöttner, M. Hölzle, C. Endisch
This paper investigates the accuracy of several analytical MOSFET loss models in half-bridge configuration. As voltage source is an automotive lithium-ion cell used as done in cascaded multilevel inverters. A standard capacitance-limited model as well as two models that take the loop inductance into account are evaluated and compared to experimental data. Results show that the relative root mean square error of the capacitance-limited model has an error of up to 49.5 % while models that take the loop inductance into account dont get better than 17.7 %. A new loss model is proposed which achieves errors as low as 8.0 % while also being more intuitive. A detailed breakdown of the proposed model reveals the cause of the small error, as well as how to further improve it.
本文研究了几种分析型MOSFET损耗模型在半桥结构下的精度。作为电压源,汽车锂离子电池用作级联多电平逆变器。对一个标准电容限制模型和两个考虑环路电感的模型进行了评估,并与实验数据进行了比较。结果表明,电容限制模型的相对均方根误差可达49.5%,而考虑回路电感的模型误差不超过17.7%。提出了一种新的损耗模型,误差低至8.0%,同时更加直观。对该模型的详细分析揭示了产生小误差的原因,以及如何进一步改进它。
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引用次数: 0
A Medium-Voltage High-Power Cascaded Motor Drive System with Low Voltage Fluctuation in the DC Bus 直流母线低电压波动的中压大功率级联电机驱动系统
Pub Date : 2023-05-22 DOI: 10.23919/ICPE2023-ECCEAsia54778.2023.10213506
Xingxing Peng, Yonglei Zhang, Kai Wang, Jianguo Jiang, Xibo Yuan
To reduce the low-frequency voltage fluctuation in the DC bus of conventional medium-voltage high-power cascaded H-bridge motor drive systems, this paper proposes a topology solution using quad-active-bridge DC/DC converters. The proposed system eliminates the instantaneous fluctuating power from three converter cells through a high frequency link. This removes the need for large filter capacitors in the DC bus and the reliability is improved. Meanwhile, the multi-winding (zig-zag) transformer in the conventional cascaded H-bridge motor drive system can also be removed because of the high frequency transformer included in the quad-active-bridge DC/DC converter. The proposed topology has advantages such as higher reliability by removing the low-frequency filter capacitors, and higher power density by removing the multi-winding transformer. Simulation and experimental prototypes have been built and validated the feasibility of the proposed medium-voltage high-power motor drive system.
为了降低传统中压大功率级联h桥电机驱动系统直流母线的低频电压波动,本文提出了一种采用四有源桥DC/DC变换器的拓扑方案。该系统通过高频链路消除了三个变换器单元的瞬时波动功率。这消除了在直流总线中使用大型滤波电容器的需要,并提高了可靠性。同时,由于四有源桥DC/DC变换器中包含高频变压器,传统级联h桥电机驱动系统中的多绕组(锯齿形)变压器也可以被移除。该拓扑结构通过去除低频滤波电容而具有更高的可靠性,通过去除多绕组变压器而具有更高的功率密度。建立了仿真和实验样机,验证了所提出的中压大功率电机驱动系统的可行性。
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引用次数: 0
Zero common-mode voltage modulation in novel flying-capacitive VIENNA rectifier 新型飞容式VIENNA整流器零共模电压调制
Pub Date : 2023-05-22 DOI: 10.23919/ICPE2023-ECCEAsia54778.2023.10213508
Hui Liu, Xuan Zhao, Dong Jiang, Min Zhou, Shuyu Zhang
In this paper, the common-mode voltage (CMV) of VIENNA rectifier is analyzed, and a new modulation method using only zero CMV (ZCMV) vector is proposed. The voltage fluctuation of the neutral point is suppressed by introducing a flying-capacitive (FC) leg. The simulation results show that the amplitude of CMV is reduced by more than 90% and the common-mode conducted electromagnetic interference (EMI) is reduced by 30dB compared with conventional modulation. With the control of the FC leg, the amplitude of the voltage fluctuation at the neutral point is reduced significantly. This novel topology can be applied in three-phase AC-DC power conversion which considers EMI and power quality.
本文分析了VIENNA整流器的共模电压(CMV),提出了一种仅使用零CMV矢量(ZCMV)调制的新方法。中性点的电压波动通过引入飞容(FC)支路来抑制。仿真结果表明,与传统调制相比,CMV的幅值降低了90%以上,共模传导电磁干扰(EMI)降低了30dB。在FC支路的控制下,中性点电压波动幅度明显减小。这种新颖的拓扑结构可用于考虑电磁干扰和电能质量的三相交直流电源转换。
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引用次数: 0
Dual switching-frequency hybrid Si-SiC Y-Inverter 双开关频率混合Si-SiC y型逆变器
Pub Date : 2023-05-22 DOI: 10.23919/ICPE2023-ECCEAsia54778.2023.10213982
H. J. Jaber, K. Horie, S. Domae, A. Castellazzi
This paper presents extensive experimental investigation of a Y-Inverter used in motor-drive applications. Efficiency is optimized by selecting different semiconductor technologies for the switches in the inverter and operating each of them at a different value of the switching frequency, as well as deploying continuous and discontinuous modulation strategies. Operation with air-core inductors is also demonstrated as a viable option. Finally, interleaved inverter implementation for increased power rating is also presented, using non-coupled inductors.
本文对用于电机驱动应用的y型逆变器进行了广泛的实验研究。通过为逆变器中的开关选择不同的半导体技术,并在不同的开关频率值下操作,以及部署连续和不连续调制策略,可以优化效率。操作与空芯电感也被证明是一个可行的选择。最后,还提出了采用非耦合电感提高额定功率的交错逆变器实现方法。
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引用次数: 0
期刊
2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia)
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