International Journal of Circuit Theory and Applications最新文献_第6页

Comprehensive review and study for the CMOS transformer tank voltage-controlled oscillator CMOS 变压器槽压控振荡器的全面回顾与研究

IF 1.8 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-11 DOI: 10.1002/cta.4214

Marwa Mansour, Islam Mansour

{"title":"Comprehensive review and study for the CMOS transformer tank voltage-controlled oscillator","authors":"Marwa Mansour, Islam Mansour","doi":"10.1002/cta.4214","DOIUrl":"10.1002/cta.4214","url":null,"abstract":"This article comprehensively reviews and studies CMOS transformer tank voltage-controlled oscillators (VCOs) designed to improve the frequency tuning range (FTR) and minimize phase noise (PN) across a broad frequency range, particularly for mm-wave and fifth-generation applications. The study focuses on enhancing the performance of the oscillators to meet the demanding requirements of these advanced applications. This study thoroughly investigates and compares various strategies to increase the FTR, minimize PN, and reduce power dissipation in transformer tank VCOs. The aim is to establish fundamental guidelines for implementing transformer-based tank VCOs. The study comprehensively reviews and analyzes the overall architecture of transformer-based tank VCOs, presenting a detailed examination of the methods employed to enhance VCO performance. Additionally, the study illustrates the impact of the coupling factor on the VCO's performance parameters, detailing and demonstrating the overall tank circuit quality factor (Q) and resonator coupling factor (κ). A thorough understanding of PN methodology and the limitations of FTR has led to the development of innovative architectures. These include transformer-based capacitive feedback (FB) oscillators with resistively adjusted variable inductors, as well as class-F and inverse class-F VCOs. These novel architectures contribute significantly to the improvement of oscillator performance.","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"53 4","pages":"1795-1819"},"PeriodicalIF":1.8,"publicationDate":"2024-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141941817","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 hybrid inductor-current sensor with fast response and high accuracy using online calibration for high-frequency BUCK DC-DC converters 利用在线校准实现快速响应和高精度的混合电感电流传感器，适用于高频 BUCK DC-DC 转换器

IF 1.8 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-11 DOI: 10.1002/cta.4216

Wentai Yuan, Weitao Xie, Zhijian Chen, Xiaoling Lin, Xian Tang, Yanqi Zheng

{"title":"A hybrid inductor-current sensor with fast response and high accuracy using online calibration for high-frequency BUCK DC-DC converters","authors":"Wentai Yuan, Weitao Xie, Zhijian Chen, Xiaoling Lin, Xian Tang, Yanqi Zheng","doi":"10.1002/cta.4216","DOIUrl":"10.1002/cta.4216","url":null,"abstract":"This paper introduces a hybrid inductor-current sensor with fast response and high accuracy using online calibration for 25 MHz BUCK DC-DC converter. The proposed inductor-current sensor combines the high accuracy of the senseFET sensing method with the lossless and real-time response characteristics of the RC filter technique. Comparing to exist techniques, the proposed calibration scheme can make filter coefficient converge even in unsteady state, which improve its effectiveness in practical application. Moreover, the proposed inductor-current sensor utilizes sample-based senseFET-based current sensing to offer calibration reference, which avoid the use of high bandwidth amplifier. Digital current balance control is seamlessly integrated into the 25 MHz 2-phase digital adaptive time-controlled (AOT) BUCK DC-DC converter through the utilization of the proposed hybrid inductor-current sensor. The 2-phase BUCK DC-DC converter is implemented in a standard 0.18-µm CMOS process. After online calibration, proposed hybrid inductor-current sensor outputs a full-wave waveform with high accuracy and low propagation delay of only 9 ns in post-layout simulation.","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"53 4","pages":"2154-2172"},"PeriodicalIF":1.8,"publicationDate":"2024-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141941818","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 hybrid carrier-based discontinuous PWM with neutral-point voltage ripple and current distortion reduction for Vienna rectifier 用于维也纳整流器的基于混合载波的非连续 PWM，可降低中性点电压纹波和电流畸变

IF 1.8 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-11 DOI: 10.1002/cta.4223

Yushuo Pei, Yu Tang

{"title":"A hybrid carrier-based discontinuous PWM with neutral-point voltage ripple and current distortion reduction for Vienna rectifier","authors":"Yushuo Pei, Yu Tang","doi":"10.1002/cta.4223","DOIUrl":"10.1002/cta.4223","url":null,"abstract":"The three-level Vienna rectifier is widely used in industrial applications, such as electric vehicle charging systems and telecommunication power systems. Discontinuous pulse width modulation (DPWM) is widely used in three-level AC/DC converters due to its features of switching loss minimization. However, the problems of neutral-point voltage ripple, current zero-crossing distortion, and switching losses are mutually coupled for the Vienna rectifier. To address these issues, a hybrid carrier-based discontinuous pulse width modulation (HCB-DPWM) with reduced neutral-point (NP) voltage ripple and current distortion is proposed. First, the \u0000<math>\u0000 <mi>π</mi></math>/6 clamping period of the conventional DPWM is divided into three-type clamping intervals, which reduce NP voltage ripple with shortened clamping period. Then, the elimination of current distortion around the current zero-crossing point and the switching loss reduction are investigated. The implementation of the proposed HCB-DPWM is given in detail. Finally, the simulation and experimental results of the Vienna rectifier are presented to validate the performance that the proposed HCB-DPWM can eliminate current zero-crossing distortion and reduce neutral-point voltage ripple with different modulation indices.","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"53 5","pages":"2855-2872"},"PeriodicalIF":1.8,"publicationDate":"2024-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141941816","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

Research and design of multi-stage multi-load wireless power supply system for high voltage online monitoring equipment 高压在线监测设备多级多负载无线供电系统的研究与设计

IF 1.8 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-11 DOI: 10.1002/cta.4212

Jianghua Lu, Yineng Gui

{"title":"Research and design of multi-stage multi-load wireless power supply system for high voltage online monitoring equipment","authors":"Jianghua Lu, Yineng Gui","doi":"10.1002/cta.4212","DOIUrl":"10.1002/cta.4212","url":null,"abstract":"Many online monitoring devices in substations are placed at high potential differences from the ground, and it is not possible to supply power to these devices directly from the ground through wires. Placing magnetically coupled structures inside the substation pillar insulators for inductive power transfer is considered a feasible solution, and at this stage of research, systems that add multi-stage repeating coil structures are mostly used to achieve stable power supply for individual online monitoring devices. However, the monitoring point generally requires multiple devices to monitor together, and the power requirements of different devices are different, so adding multiple repeating coils at the same time will increase the complexity of the system design, which is not conducive to engineering applications. Therefore, this paper designs and optimizes a multi-stage multi-load wireless power supply system magnetic coupling structure, using a three-dimensional hollow solenoid combined with a ferrite core as the system repeating coil structure and an embedded magnetic coupling structure as the receiver end structure to reduce the number of system repeating coils while supplying power to devices with different power requirements. A prototype with a transmission distance of 1.02 m was built in the experiment, and the experimental results showed that the highest transmission efficiency of the system was 44.3% and 39.2% under single load and double load conditions, respectively. As the load resistance increases, the system can achieve constant voltage output under both single-load and dual-load operating conditions. Adjusting the number of turns of the receiving coil can change the output characteristics of the system and achieve constant voltage output of different voltage levels or constant current output of different current levels, which can meet the power supply needs of different loads.","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"53 4","pages":"1909-1925"},"PeriodicalIF":1.8,"publicationDate":"2024-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141941815","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

Bifurcation analysis and control in a DC–AC inverter with PID controller 带 PID 控制器的直流-交流逆变器中的分岔分析和控制

IF 1.8 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-11 DOI: 10.1002/cta.4209

Ronghua Wu, Xiaohong Zhang, Wei Jiang

{"title":"Bifurcation analysis and control in a DC–AC inverter with PID controller","authors":"Ronghua Wu, Xiaohong Zhang, Wei Jiang","doi":"10.1002/cta.4209","DOIUrl":"10.1002/cta.4209","url":null,"abstract":"Aiming at the rich bifurcation and chaotic characteristics in the inverter with proportion integral derivative (PID) controller, the discrete iterative model of such an inverter was derived based on the stroboscopic mapping theory; the nonlinear evolution and the cause of instability in this inverter are analyzed. It was observed that the low-frequency oscillation following instability was due to the Hopf bifurcation, which will decrease the power supplied quality by the inverter. To address the potential issue of the system instability caused by nonlinear behaviors, an improved exponential time-delay feedback control scheme was proposed. The controlled object's output current first subtracted its own delay a period of time to form a difference term, which was subsequently fed into an exponential link to make difference with the constant 1. The resulting value was then fed into a proportional link to obtain the control term, which was applied to the PID controlled inverter in a feedback manner. Moreover, the range of the feedback proportional coefficient was solved via the Jury criterion. Finally, the effectiveness of this scheme was verified through the comparative simulations, demonstrating that this scheme can not only increase the stability domain for each parameter by more than 50% in the PID controlled inverter but also stabilize the quasi-periodic behavior due to the low scale oscillation caused by the Hopf bifurcation at the switching frequency.","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"53 4","pages":"2125-2153"},"PeriodicalIF":1.8,"publicationDate":"2024-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142223884","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

An asymmetrical cancellation method for common mode voltage in full-bridge LLC converter utilizing nonideal transformer 利用非理想变压器的全桥 LLC 转换器共模电压非对称消除方法

IF 1.8 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-08 DOI: 10.1002/cta.4217

Xinbo Liu, Shuiyuan He, Ruiqi Ma, Shibin Yang, Yuhang Xi, Lijun Diao

{"title":"An asymmetrical cancellation method for common mode voltage in full-bridge LLC converter utilizing nonideal transformer","authors":"Xinbo Liu, Shuiyuan He, Ruiqi Ma, Shibin Yang, Yuhang Xi, Lijun Diao","doi":"10.1002/cta.4217","DOIUrl":"10.1002/cta.4217","url":null,"abstract":"This paper proposes a common mode voltage (CMV) reduction method for power full-bridge LLC converter. A detailed derivation of asymmetrical CMV source in energy transmission (ET) and dead time resonance (DR) is presented, and a common mode (CM) equivalent circuit model considering stray parameters of power devices and transformer for the high-voltage power LLC converter is constructed. This study assesses the influence of asymmetric junction capacitances of power devices and stray capacitances of transformer on both the CMV source and the CM model. It also examines the impact of power level on the constituent elements of the CMV source. Additionally, a theory of asymmetric CMV source cancellation is deduced based on the nonideal power LLC converter, where asymmetric noise source and coupling pathway are taken into account, which helps mitigate it through matching circuit structure without extra components. Finally, a 30 kHz 2 × 50 kW prototype is constructed and validated to reduce the CMV where the experiments show that the output CMV within high-frequency band could be reduced by 12.15 dB at rated operating conditions.","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"53 4","pages":"2109-2124"},"PeriodicalIF":1.8,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141928784","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

Analysis and comparison of the coupled coil structures in dual-load magnetic coupled resonance wireless power transfer systems 双负载磁耦合共振无线电力传输系统中耦合线圈结构的分析与比较

IF 1.8 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-08 DOI: 10.1002/cta.4193

Jun Cai, Ying Yan, Adrian David Cheok, Xin Zhang

引用次数: 0

Implementation of digital MemComputing using standard electronic components 使用标准电子元件实现数字 MemComputing

IF 1.8 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-08 DOI: 10.1002/cta.4220

Yuan-Hang Zhang, Massimiliano Di Ventra

{"title":"Implementation of digital MemComputing using standard electronic components","authors":"Yuan-Hang Zhang, Massimiliano Di Ventra","doi":"10.1002/cta.4220","DOIUrl":"10.1002/cta.4220","url":null,"abstract":"<div>\u0000 \u0000 Digital MemComputing machines (DMMs), which employ nonlinear dynamical systems with memory (time non-locality), have proven to be a robust and scalable unconventional computing approach for solving a wide variety of combinatorial optimization problems. However, most of the research so far has focused on the numerical simulations of the equations of motion of DMMs. This inevitably subjects time to discretization, which brings its own (numerical) issues that would be otherwise absent in actual physical systems operating in continuous time. Although hardware realizations of DMMs have been previously suggested, their implementation would require materials and devices that are not so easy to integrate with traditional electronics. Addressing this, our study introduces a novel hardware design for DMMs, utilizing readily available electronic components. This approach not only significantly boosts computational speed compared to current models but also exhibits remarkable robustness against additive noise. Crucially, it circumvents the limitations imposed by numerical noise, ensuring enhanced stability and reliability during extended operations. This paves a new path for tackling increasingly complex problems, leveraging the inherent advantages of DMMs in a more practical and accessible framework.\u0000 </div>","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"53 4","pages":"2447-2465"},"PeriodicalIF":1.8,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141941923","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

An improved derivative-based phase-locked loop for single-phase grid synchronization under abnormal grid conditions 基于导数的改进型锁相环，用于异常电网条件下的单相电网同步

IF 1.8 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-07 DOI: 10.1002/cta.4211

Faridul Hassan, Alok Kumar Dubey, Amritesh Kumar, Avadh Pati

{"title":"An improved derivative-based phase-locked loop for single-phase grid synchronization under abnormal grid conditions","authors":"Faridul Hassan, Alok Kumar Dubey, Amritesh Kumar, Avadh Pati","doi":"10.1002/cta.4211","DOIUrl":"10.1002/cta.4211","url":null,"abstract":"<div>\u0000 \u0000 Generating a quadrature signal in a single-phase system using a second-order generalized integrator (SOGI) requires accurate frequency information. The standard SOGI phase-locked loop (PLL) includes frequency feedback to the SOGI. However, during grid abnormalities such as voltage sag/swell and phase angle jumps, the SOGI-PLL faces frequency disturbances that propagate to the phase detector (PD) and affects the quadrature signal generator (QSG). Furthermore, the SOGI-PLL having two loops dependent on each other creates loop coupling phenomena; either a change in phase or frequency affects each other. SOGI-PLL is tuning sensitive, as the SOGI block has a gain that needs to be adjusted, increases the complexity, and affects the performance of the system. There is a trade-off between SOGI gain and PLL parameters that needs to be considered for adequate parameter design to provide accurate grid synchronization while maintaining the stability of the system. To attain better performance, researchers have proposed derivative-based PLL (DPLL). The conventional DPLL faces challenges to noise and harmonics amplification. This paper presents an improved DPLL for single-phase grid synchronization under adverse grid conditions. The improved derivative-based PLL (IDPLL) comprises two improved derivative-based quadrature signal generator (IDQSG) blocks to extract the phase-error information for accurately estimating phase and frequency. The detailed mathematical modeling and bode plot for the IDQSG and IDPLL are presented. The proposed IDQSG eliminates the requirement of gain tuning, hence reducing complexity. Moreover, there is no interdependent loop in the IDPLL, which significantly improves the dynamic performance. A hardware setup is developed to evaluate the performance of the system in real-time. The experimental results are obtained using an field programmable gate array (FPGA)-based controller.\u0000 </div>","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"53 4","pages":"2059-2074"},"PeriodicalIF":1.8,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141941924","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

Noncirculating current series resonant converter with pulse frequency modulation 具有脉冲频率调制功能的非环流串联谐振变换器

IF 1.8 3区工程技术

International Journal of Circuit Theory and Applications Pub Date : 2024-08-07 DOI: 10.1002/cta.4206

Guangfu Ning, Litao Du, Ben Dai, Mei Su, Wenjing Xiong, Jingtao Xu, Guo Xu

{"title":"Noncirculating current series resonant converter with pulse frequency modulation","authors":"Guangfu Ning, Litao Du, Ben Dai, Mei Su, Wenjing Xiong, Jingtao Xu, Guo Xu","doi":"10.1002/cta.4206","DOIUrl":"10.1002/cta.4206","url":null,"abstract":"<div>\u0000 \u0000 In this paper, an asymmetric pulse frequency modulation (APFM) is applied to the full-bridge series resonant converter with a secondary LC resonant tank. Different from the traditional PFM, the upper and lower switches have complementary gate drivers and the lower switches have constant on time of half-resonant period in this paper. Thanks to the resonant tank moved to the secondary side with the adopted APFM, the maximum magnetic flux density Bm of a high-frequency transformer (HFT) is only concerned with the fixed resonant frequency rather than the variable switching frequency. Hence, the switching frequency can be widely regulated, as well as the voltage gain. Furthermore, the circulating current flowing back to the input voltage source in the traditional LC series resonant converter can be eliminated by the APFM, leading to a low resonant current peak value. The operation principles and characteristics of the adopted method are analyzed in detail. Finally, a 500 W/70–120 V to 300 V/21–180 kHz prototype is built, and the experimental results verified the theoretical analysis well.\u0000 </div>","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"53 4","pages":"2075-2088"},"PeriodicalIF":1.8,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141941929","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