International Journal of Circuit Theory and Applications最新文献_第7页

Analysis and design of a three‐coil IPT system with independent dual output ports 分析和设计具有独立双输出端口的三线圈 IPT 系统

IF 2.3 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-07 DOI: 10.1002/cta.4224

Xuebin Zhou, Kangshuai Dong, Jiabin Wang, Lin Yang

{"title":"Analysis and design of a three‐coil IPT system with independent dual output ports","authors":"Xuebin Zhou, Kangshuai Dong, Jiabin Wang, Lin Yang","doi":"10.1002/cta.4224","DOIUrl":"https://doi.org/10.1002/cta.4224","url":null,"abstract":"Industrial applications tend to involve a substantial assemblage of electronic devices, and it is imperative to consider diverse charging requirements while charging these devices. This paper proposes a three‐coil single‐input‐and‐dual‐output (SIDO) inductive power transfer (IPT) system to meet the charging requirements of different devices. The system includes two independent output ports, providing constant voltage (CV) output and constant current (CC) output for different loads, respectively. In addition, the zero‐phase angle (ZPA) operation can be achieved, thus avoiding injection of reactive power and improving energy transfer efficiency. Unlike previous related studies, the receiver of the proposed SIDO IPT system only includes one receiving coil to pick up energy, eliminating unnecessary cross‐coupling and complex decoupling circuits in traditional IPT systems with multiple outputs. This study first analyzes the CC/CV output theory of the proposed SIDO IPT system in detail, and designs and optimizes the parameters by establishing an equivalent model. Then, the conditions for achieving zero‐voltage switching (ZVS) operation of the inverter are obtained by analyzing the sensitivity of CC/CV performance to the variation of the compensation capacitors. Finally, a verification experimental prototype with 2.5A CC output and 72 V CV output is established to verify the effectiveness of the proposed IPT system.","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"100 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141941928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Comparative analysis of control strategies impact on power losses in IGBT power modules with a multiphysics‐circuit coupling method 利用多物理场-电路耦合方法比较分析控制策略对 IGBT 功率模块功率损耗的影响

IF 2.3 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-07 DOI: 10.1002/cta.4219

Zhifeng Dou, Changai Zhang, Ye Tian, Falong Lu, Qian Wang

{"title":"Comparative analysis of control strategies impact on power losses in IGBT power modules with a multiphysics‐circuit coupling method","authors":"Zhifeng Dou, Changai Zhang, Ye Tian, Falong Lu, Qian Wang","doi":"10.1002/cta.4219","DOIUrl":"https://doi.org/10.1002/cta.4219","url":null,"abstract":"Power losses in semiconductor devices present a significant impediment to advancing power electronics systems for achieving higher frequencies, improved efficiency, and greater integration. A major challenge lies in directly coupling power losses with various control strategies, considering the variations in manufacturers, packaging, and process structures within the power electronics field. This paper introduces a field‐circuit coupling simulation methodology of the insulated gate bipolar transistor (IGBT) within the Simulink/COMSOL environment, using a conventional three‐phase six‐switch voltage source inverter (VSI) IGBT module as a case study. A composite transfer function interconnects the electrical and thermal aspects, enabling bidirectional coupling between IGBT temperature and losses. This study aims to comprehensively compare the effects of various control strategies, namely, single‐vector, dual‐vector, and three‐vector current model predictive control (CMPC) and space vector pulse width modulation (SVPWM), on the losses and temperature of IGBT power modules. The findings emphasize that losses are significantly influenced by the selection of weighting factor coefficients and power factor settings under the same CMPC control strategy with a fixed switching frequency. Additionally, the selection of control strategies, such as CMPC and SVPWM, substantially impacts power losses in power electronic devices.","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"23 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141941930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Double‐order negative group delay filtering function: A brilliant capability of the bilinear double‐order transfer function 双阶负群延迟滤波函数双线性双阶传递函数的卓越能力

IF 2.3 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-07 DOI: 10.1002/cta.4213

Rawid Banchuin

{"title":"Double‐order negative group delay filtering function: A brilliant capability of the bilinear double‐order transfer function","authors":"Rawid Banchuin","doi":"10.1002/cta.4213","DOIUrl":"https://doi.org/10.1002/cta.4213","url":null,"abstract":"In this work, the capability to generate the negative group delay (NGD) phenomenon at those frequencies higher than a certain value, that is, the NGD high‐pass (HP) filtering function, of the bilinear double‐order transfer function has been demonstrated. Based on the Type‐I bilinear double‐order filter circuit, our theory has been verified by strong agreements between the formulae and their proof‐of‐concept (POC) circuit‐based simulation results. Both formula‐based and POC circuit‐based simulations give the minimum group delay of −5 ms yet the cut‐off frequency of 10 and 9 rad/s, respectively. Such slight deviation is caused by the approximation error of the bilinear double‐order impedance. By employing two orders, the bilinear double‐order transfer function has been found to be the basis transfer function for the NGD filtering function with the highest degree of freedom. Based on our design equation for the NGD filtering function, it can be seen that the distances between zero and pole and the characteristic frequency of the bilinear double‐order transfer function are governed by such characteristic frequency itself, the cut‐off frequency of the NGD filtering function, and the fractional order of the Laplacian operator. In addition, the effects of the fractional order of the Laplacian operator, the fractional order of the transfer function, and the ratio of the abovementioned distances to the characteristics of the newly found double‐order NGD filtering function have been studied in detail.","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"59 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141941932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Low‐latency and power‐efficient row‐based binary‐weighted compensator for fixed‐width Booth multiplier 用于固定宽度布斯乘法器的低延迟、高功效、基于行的二进制加权补偿器

IF 2.3 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-07 DOI: 10.1002/cta.4207

Chung‐Yi Li, Hong‐Chi Hu, Yuan‐Ho Chen, Shinn‐Yn Lin

引用次数: 0

Enhancing damping of low‐frequency oscillations in power networks through energy storage system‐based controller 通过基于储能系统的控制器增强对电网低频振荡的抑制作用

IF 2.3 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-04 DOI: 10.1002/cta.4196

Rohit Kumar, Soumya R. Mohanty, Mitresh Kumar Verma

{"title":"Enhancing damping of low‐frequency oscillations in power networks through energy storage system‐based controller","authors":"Rohit Kumar, Soumya R. Mohanty, Mitresh Kumar Verma","doi":"10.1002/cta.4196","DOIUrl":"https://doi.org/10.1002/cta.4196","url":null,"abstract":"SummaryMitigating inter‐area low‐frequency oscillations is a significant concern in multi‐machine power systems due to their adverse effects on system stability. These oscillations are intricately linked with power oscillations. So appropriate power modulation through the Battery Energy Storage System (BESS) can be an effective strategy for preserving system stability. In this paper, the maximal of all minimal residue indices under variations in power system operating conditions is utilized as the index for identifying the location for installation of the BESS, the damping control loop, and the feedback signal. A fixed‐structure scheme‐based wide‐area damping controller (WADC) is proposed for the BESS, providing sufficient damping of inter‐area oscillation modes. A modified IEEE 39‐bus system is simulated using a real‐time digital simulator as a test system in this work. The simulation results confirmed that the proposed WADC could effectively damp various inter‐area oscillation modes. Furthermore, it offers robust damping performance over contingencies associated with the system's various operating scenarios as well as the uncertainty associated with fixed and variable communication delays in the feedback signal of WADC and the integration of solar photovoltaic systems. Moreover, a comparative analysis of the proposed WADC is carried out with a BESS‐based wide‐area power system stabilizer, which is found to be more effective in mitigating system inter‐area oscillations.","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"8 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141941934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Design of a new modular‐isolated‐forward‐based active snubber cell for power switches 为功率开关设计新型模块化隔离前向有源缓冲单元

IF 2.3 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-04 DOI: 10.1002/cta.4205

Haci Bodur, Abdulkerim Gundogan, Ahmet Faruk Bakan

{"title":"Design of a new modular‐isolated‐forward‐based active snubber cell for power switches","authors":"Haci Bodur, Abdulkerim Gundogan, Ahmet Faruk Bakan","doi":"10.1002/cta.4205","DOIUrl":"https://doi.org/10.1002/cta.4205","url":null,"abstract":"In this paper, a new modular‐isolated‐forward‐based active snubber cell (SC) for power switches is designed. In the proposed new SC, the zero voltage transition (ZVT) technique is implemented with a forward converter although the current counterparts generally use a flyback converter. In the converter with the new SC, the main switch is turned on with ZVT (full zero voltage switching [ZVS]) and turned off with ZVS, the main diode is turned off with zero current switching (ZCS), the auxiliary switch is turned on with ZCS and turned off with ZVS, and the parasitic capacitor energies are recovered. In addition, thanks to the forward converter, it has been possible to minimize the transformer leakage inductance and greatly reduce the current values of devices in the new SC. The new cell is applied to a single‐phase, grid‐connected, T‐type three‐level inverter (T2‐3LI) as an example. A detailed steady‐state analysis of this inverter was made, and the theoretical analysis was confirmed with measurement results taken from a prototype with 100 kHz and 3.3 kW values. Compared to its hard switching (HS) equivalent, in the converter with soft switching (SS) cell, the total circuit loss was reduced from about 248 W to 86 W, thus achieving an increase in the total efficiency from 92.5% to 97.4%.","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"79 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141941931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

A distributed coordinated control strategy for isolated AC microgrids based on consensus algorithm considering communication delay 基于考虑通信延迟的共识算法的隔离交流微电网分布式协调控制策略

IF 2.3 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-04 DOI: 10.1002/cta.4210

Chaofeng Yan, Qirui Li, Xiaomeng Zhang, Yang Han, Ping Yang, Amr S. Zalhaf

{"title":"A distributed coordinated control strategy for isolated AC microgrids based on consensus algorithm considering communication delay","authors":"Chaofeng Yan, Qirui Li, Xiaomeng Zhang, Yang Han, Ping Yang, Amr S. Zalhaf","doi":"10.1002/cta.4210","DOIUrl":"https://doi.org/10.1002/cta.4210","url":null,"abstract":"In the multi‐paralleled converter microgrid system, the traditional hierarchical control strategy can eliminate the bus voltage amplitude and frequency deviation from the rated value. However, isolated AC microgrids may face extreme scenarios such as communication delays and interruptions in data transmission due to the use of low‐bandwidth communication (LBC) lines. Additionally, the inconsistent line impedance of each distributed generation (DG) unit may result in the inaccurate division of reactive power in multi‐paralleled converter systems, thus affecting system stability. To address these issues, this paper presents a distributed coordinated control strategy for isolated AC microgrids based on the consensus algorithm. The proposed strategy first replaces LBC lines with a filter to alleviate the effects of communication delays. A small‐signal model is established in its state space, and stability of the microgrid system under the proposed control strategy is verified through eigenvalue analysis. Furthermore, based on the above theoretical analysis, a consensus algorithm is introduced, and a distributed control strategy for isolated AC microgrids based on the consensus algorithm is proposed to solve the issue of inaccurate equalization of the system's reactive power. Finally, factors that influence the dynamic convergence performance of the consensus algorithm are analyzed through simulation in PLECS software. Also, the maximum tolerable communication delays of the microgrid system under different communication topologies are also compared, and the system's robustness is evaluated under the condition of sudden communication interruption in a DG unit and sudden weather variation. These analyses confirmed the robustness of the proposed strategy against communication delays, output power fluctuation, and communication interruptions.","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"24 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141941933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

A novel arc‐shaped magnetic coupler with dual‐channel receiver for rotational misalignment tolerance in AUV underwater wireless power transfer systems 带双通道接收器的新型弧形磁耦合器，用于 AUV 水下无线电力传输系统中的旋转偏差容限

IF 2.3 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-04 DOI: 10.1002/cta.4222

Hongmin Tang, Zhiwei Shen, Ronghuan Xie, Wenbin Pan, Xiaoying Chen, Zhongqi Li, Yiming Zhang

引用次数: 0

Research on linear active disturbance rejection control strategy based on grid‐forming inverters 基于并网逆变器的线性有源干扰抑制控制策略研究

IF 2.3 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-02 DOI: 10.1002/cta.4186

Meng Jie Hu, Yu Tang

{"title":"Research on linear active disturbance rejection control strategy based on grid‐forming inverters","authors":"Meng Jie Hu, Yu Tang","doi":"10.1002/cta.4186","DOIUrl":"https://doi.org/10.1002/cta.4186","url":null,"abstract":"Grid‐forming inverters play a vital role in connecting renewable energy sources to the grid, and maintaining stable output voltage is essential for system operation. However, traditional dual‐PI voltage–current loop control suffers from slow response and weak disturbance rejection, leading to suboptimal control performance of grid‐connected inverter output voltage. Moreover, employing traditional dual‐PI control in grid‐connected inverters results in low output impedance, making them prone to subsynchronous oscillations and instability under strong grid conditions. To address these challenges, this study introduces a novel dual‐loop control strategy based on linear active disturbance rejection control (LADRC), wherein voltage loop is regulated by LADRC while current loop employs PI control. Quantitative analysis and experimental findings demonstrate that compared with traditional dual‐PI voltage–current loop control, the LADRC‐based dual‐loop control strategy offers higher bandwidth and lower steady‐state error, thereby enhancing the tracking speed and precision of grid‐forming inverter output voltage. The LADRC‐based dual‐loop control strategy reduces output impedance in grid‐forming inverter systems, lowering THD of output voltage and improving harmonic suppression under nonlinear loads. Experimental results show its robustness against strong grid conditions compared with traditional dual‐PI control, ensuring stable output voltage.","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"21 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141885372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Low noise, temperature‐compensated, electrochemical cell sigma–delta current measurement readout circuit 低噪音、温度补偿型电化学电池 sigma-delta 电流测量读出电路

IF 2.3 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-02 DOI: 10.1002/cta.4163

Pegah Tahani, Mehdi Habibi, Sebastian Magierowski

{"title":"Low noise, temperature‐compensated, electrochemical cell sigma–delta current measurement readout circuit","authors":"Pegah Tahani, Mehdi Habibi, Sebastian Magierowski","doi":"10.1002/cta.4163","DOIUrl":"https://doi.org/10.1002/cta.4163","url":null,"abstract":"SummaryNanopore ion channels are a promising solution for certain molecular structure analyses. Large arrays of nanopore channels and their associated readout circuits are used in many molecular studies such as DNA sequencing. Readout circuits must meet challenging performance criteria such as low noise operation, low power consumption, in‐channel digitization capability, and high linearity. Previously, sigma–delta modulators have been presented to address these criteria; however, their specifications show drifts with temperature. In this paper, an approach is presented to keep modulator performance constant with temperature variations. For this purpose, the sigma–delta modulator's feedforward and feedback branches are modified so that their gain coefficient remains constant over a certain temperature range. With large sensors arrays, solutions employing high bias currents in the feedback paths are not suitable due to power consumption limitations. Here, the design gives the possibility of switching low current levels in the feedback paths without affecting the ENOB. The proposed temperature compensation solution shows good performance when temperature is swept from 27°C to 100°C. Over the mentioned temperature range, the gain and bandwidth of the modulator show a change of less than 0.4%. It is further shown that for a 10 kHz input current signal with an amplitude of 600 pA, the ENOB and power consumption are 12.9 and 4.6 mW, respectively.","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"23 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141885374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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