Journal of Power Electronics最新文献_第9页

Variable structure smooth switching strategy of LLC-C resonant converter based on state trajectory control 基于状态轨迹控制的 LLC-C 谐振转换器可变结构平滑开关策略

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-16 DOI: 10.1007/s43236-024-00803-7

Wei Li, Mengjun Li, Ruilin Ji, Chaochang Che, Hanyu Zhao

{"title":"Variable structure smooth switching strategy of LLC-C resonant converter based on state trajectory control","authors":"Wei Li, Mengjun Li, Ruilin Ji, Chaochang Che, Hanyu Zhao","doi":"10.1007/s43236-024-00803-7","DOIUrl":"https://doi.org/10.1007/s43236-024-00803-7","url":null,"abstract":"This paper proposes a smooth mode-switching method based on state trajectory control to suppress overshoot and to shorten switching time during the mode switching of LLC-C resonant converters. First, the resonant tank trajectories of the LLC and LCCL are analyzed. Second, through a transformation of the resonant tank trajectory, the optimal trajectory of the resonant tank switching is drawn. Then the switching optimization cycle time is calculated by a diagram of the optimal trajectory. Thus, the PWM conversion to the optimization cycle is controlled directly when the switching signal comes. By this control method, a smooth transition of the resonant tank voltage and current between the two modes is achieved. At last, a prototype with a rated power of 500 W is built to check the feasibility and effectiveness of the proposed switching method. Experiment results show that the current surge of the resonant tank is reduced from 12.3 to 8.6 A when the state trajectory control is applied. The voltage surge of the second resonant capacitor in parallel is reduced from 906 to 712 V. Meanwhile, the switching time is shortened by 0.21 ms, which speeds up the switching process.","PeriodicalId":50081,"journal":{"name":"Journal of Power Electronics","volume":"21 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140583250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sneak circuit analysis based performance optimization for ZVT PWM boost converters 基于潜行电路分析的 ZVT PWM 升压转换器性能优化

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-16 DOI: 10.1007/s43236-024-00819-z

Min Li, Bo Zhang, Dongyuan Qiu, Aimin Miao

{"title":"Sneak circuit analysis based performance optimization for ZVT PWM boost converters","authors":"Min Li, Bo Zhang, Dongyuan Qiu, Aimin Miao","doi":"10.1007/s43236-024-00819-z","DOIUrl":"https://doi.org/10.1007/s43236-024-00819-z","url":null,"abstract":"The mechanism of a ZVT PWM boost converter is analyzed in detail in this study. In addition, the comprehensive parasitic parameters are taken into consideration. It is discovered that some unexpected modes, referred to as sneak circuit modes, occur during the operation of the converter, when certain excitation conditions are applied. Parasitic parameters and dynamic sneak paths impact the converter operating performance, causing both positive and negative effects. The effects of sneak circuits and excitation conditions are analyzed so that those with negative effects can be eliminated, and those with positive effects can be utilized. In contrast to previous works, sneak circuit phenomena are utilized to optimize the converter performance. Furthermore, parasitic circuit elements are identified and quantitatively determined to estimate their impact on the switching performance of the converter. Combining parameter optimization and topology optimization, soft switching is achieved in both the main power switch and the auxiliary power switch, and waveform distortion is reduced. Finally, simulation and experimental results are included to verify the theoretical analyses.","PeriodicalId":50081,"journal":{"name":"Journal of Power Electronics","volume":"37 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140609462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analyzing and mitigating parasitic capacitances in planar transformers for high-frequency operation 分析和缓解高频运行平面变压器中的寄生电容

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-16 DOI: 10.1007/s43236-024-00804-6

Sujeong Lee, Seokwon Kim, Jong-Won Shin, Wonhee Kim

引用次数: 0

Combined EKF–LSTM algorithm-based enhanced state-of-charge estimation for energy storage container cells 基于 EKF-LSTM 组合算法的储能集装箱电池充电状态增强估算

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-16 DOI: 10.1007/s43236-024-00801-9

Zidi Yu, Jian Liu, Yuchen Lu, Chengzhi Feng, Letian Li, Qi Wu

引用次数: 0

Transformer balancing winding technology with effective shielding for suppressing common mode noise in flyback converters 带有效屏蔽的变压器平衡绕组技术，用于抑制反激式转换器中的共模噪声

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-12 DOI: 10.1007/s43236-024-00802-8

Wenxiang He, Fannie Kong, Zhenmin Wang, Yanming Chen

引用次数: 0

Series arc fault detection method based on a residual deformable convolutional network for complex branch circuit 基于残差可变形卷积网络的复杂分支电路串联电弧故障检测方法

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-12 DOI: 10.1007/s43236-024-00812-6

Qiongfang Yu, Qiong Wu, Yuhai Zhang

{"title":"Series arc fault detection method based on a residual deformable convolutional network for complex branch circuit","authors":"Qiongfang Yu, Qiong Wu, Yuhai Zhang","doi":"10.1007/s43236-024-00812-6","DOIUrl":"https://doi.org/10.1007/s43236-024-00812-6","url":null,"abstract":"When a series arc fault (SAF) occurs in one branch of a low-voltage alternating current power distribution system with complex connections and many types of loads, the load branches interact with one another, and thus, detection becomes more difficult. To avoid the occurrence of electrical fire, an SAF detection method based on a residual deformable convolutional network (RDCN) is proposed. First, an arc fault data acquisition experimental platform for low-voltage complex branches is built to measure trunk current signals during normal operation and SAF occurrence. Second, 1D current signals are mapped to 2D space as input to the model, more comprehensively responding to the amplitude and variation of the signals. Deformable convolutional networks are used to extract spatial distribution information from feature maps to avoid the limitation posed by the fixed shape of convolutional kernels and improve spatial differentiation among different data. Considering the ability to focus better on fault information, channel attention is introduced to strengthen the correlation among feature channels. Then, the experimental platform data verify that the method can effectively distinguish whether SAF occurs and the type of load where the fault occurs, with the highest accuracy of up to 98.98% and 98.84%, respectively, and an average test time of 1.8 s in determining whether a fault occurs in a six-branch circuit. Finally, compared with existing network models, RDCN has a shorter running time while obtaining a higher accuracy rate.","PeriodicalId":50081,"journal":{"name":"Journal of Power Electronics","volume":"36 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140583248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel P-Hausdorff distance-based fault diagnosis scheme for submodules in hybrid MMCs 基于 P-Hausdorff 距离的混合 MMC 子模块故障诊断新方案

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-12 DOI: 10.1007/s43236-024-00809-1

Zixi Han, Yiming Wu, Zian Zeng, Zijiang Wang, Jianzhou Wu, Zongwu Huang, Fali Tan, Chenxuan Zhang, Ben Shang, Youping Fan

{"title":"Novel P-Hausdorff distance-based fault diagnosis scheme for submodules in hybrid MMCs","authors":"Zixi Han, Yiming Wu, Zian Zeng, Zijiang Wang, Jianzhou Wu, Zongwu Huang, Fali Tan, Chenxuan Zhang, Ben Shang, Youping Fan","doi":"10.1007/s43236-024-00809-1","DOIUrl":"https://doi.org/10.1007/s43236-024-00809-1","url":null,"abstract":"In the operational context of the hybrid modular multilevel converters (MMC), the submodule stands out as a pivotal and vulnerable element, susceptible to various faults (Zheng et al. in IEEE Access 7:34946–34953, 2019; Xue et al. in IEEE Trans Power Deliv 33:1448–1458, 2017; Lee et al. Reactive power control operation scheme of LCC-HVDC for maximizing shunt capacitor size in AC systems. IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC). pp 1–5, 2015; Lin et al. in IEEE Trans Power Deliv 31:1342–1350, 2015; Debnath et al. in IEEE Trans Power Electron 30:37–53, 2014), including insulated gate bipolar transistors (IGBT) open-circuit, short-circuit, capacitor faults, etc. Therefore, accurate and rapid diagnosis of submodule faults is crucial to maintaining the reliability of both the hybrid MMC and its associated DC system (Xu et al. in IEEE Trans Power Electron 31:2720–2729, 2015; Wang et al. in IEEE Trans Power Deliv 32:1535–1544, 2016; Guo et al. in IEEE Trans Power Deliv 32:666–677, 2016; Zeng et al. in IEEE Trans Power Deliv 30:1298–1306, 2014). To enhance the reliability of the hybrid MMC, a comprehensive study on fault analysis and a diagnosis scheme based on waveform similarity for the submodules in hybrid the MMC are proposed. The devised scheme leverages a sliding window approach to capture essential feature data and employs partial Hausdorff (P-Hausdorff) distance for the diagnosis of open-circuit faults within the submodules. Finally, the proposed diagnosis scheme is implemented in MATLAB and the effectiveness and validity of the scheme are verified.","PeriodicalId":50081,"journal":{"name":"Journal of Power Electronics","volume":"45 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140583278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Geometric principle-based deadbeat predictive control with low-torque ripple for dual three-phase permanent magnet synchronous motors 基于几何原理的双三相永磁同步电机低扭矩纹波死区预测控制

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-12 DOI: 10.1007/s43236-024-00813-5

Shuang Wang, Ying Zhang, Jianfei Zhao, Deliang Wu

引用次数: 0

Composite control strategy for wide-gain LLC resonant converters with photovoltaic energy storage inputs 具有光伏储能输入的宽增益 LLC 谐振转换器的复合控制策略

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-12 DOI: 10.1007/s43236-024-00808-2

Xingtian Feng, Rundong Zhang, Guangrui Zhou

引用次数: 0

A virtual space vector modulation strategy for suppressing common-mode voltage in dual-output T-type three-level converters 用于抑制双输出 T 型三电平转换器共模电压的虚拟空间矢量调制策略

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-12 DOI: 10.1007/s43236-024-00800-w

Rutian Wang, Yue Gao, Xuedong Wu, Xiuyun Wang

{"title":"A virtual space vector modulation strategy for suppressing common-mode voltage in dual-output T-type three-level converters","authors":"Rutian Wang, Yue Gao, Xuedong Wu, Xiuyun Wang","doi":"10.1007/s43236-024-00800-w","DOIUrl":"https://doi.org/10.1007/s43236-024-00800-w","url":null,"abstract":"Dual-output three-level converters are widely used in multiphase motor drives, and their common-mode voltage (CMV) and neutral point (NP) balance problems can affect the safe and stable operation of systems. Owing to their unique structure, certain disabled switching states exist. Suppressing the CMV to comply with operational constraints is worthy of further investigation. In this paper, an improved time-sharing virtual space vector (ITVSV) modulation strategy is proposed. In addition, the working principle of the converter is analyzed and divided into two effective working modes. The proposed strategy defines two kinds of virtual vector synthesis methods, using virtual vectors instead of the basic small vector of large CMV to reduce the degrees of freedom of voltage fluctuation. The switching loss can be reduced by adjusting the switching sequence in some areas. Furthermore, it is demonstrated that the NP voltage is self-balancing within one primitive period. Finally, the effectiveness of the ITVSV for suppressing CMV and NP voltage balance is verified by experimental results.","PeriodicalId":50081,"journal":{"name":"Journal of Power Electronics","volume":"55 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140583080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0