IET Power Electronics最新文献

{"title":"Reconfigurable detuned dual-frequency series–series compensated WPT system for high anti-misalignment tolerance","authors":"Kerui Xu, Jing Zhou, Bo Wang, Yuankui Wang","doi":"10.1049/pel2.12686","DOIUrl":"https://doi.org/10.1049/pel2.12686","url":null,"abstract":"In the realm of wireless power transfer, considering misalignment between transmitting and receiving coils is imperative. Traditional wireless power transfer systems experience a significant decrease in output power when the coupling coefficient fluctuates. This paper proposes a reconfigurable dual-frequency series–series (SS) topology with primary side inductive detuned and secondary side with full resonance. The proposed topology operates at two frequencies and can be transformed into two different SS topologies at each frequency. This allows the system to switch between the two SS topologies when a large misalignment occurs, thereby achieving a more stable output power level. Furthermore, a comprehensive parameter design flowchart for the proposed topology is presented, and the parameters for a 400 W prototype are designed and implemented. The prototype is tested to evaluate the performance of the topology. The frequency response analysis of the prototype validates the effectiveness of the parameter design method. The test results show that the topology can maintain output power fluctuations within 23% of the maximum power for misalignment ranging from <i>k </i>= 0.13 to <i>k </i>= 0.46. Additionally, the system maintains an efficiency of at least 80% across the entire output power flat range, peaking at a maximum efficiency of 91%.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140325374","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}

{"title":"Real-time monitoring and ageing detection algorithm design with application on SiC-based automotive power drive system","authors":"Pierpaolo Dini,&nbsp;Giovanni Basso,&nbsp;Sergio Saponara,&nbsp;Claudio Romano","doi":"10.1049/pel2.12679","DOIUrl":"10.1049/pel2.12679","url":null,"abstract":"<p>The article describes an innovative methodology for the design and experimental validation of monitoring and anomaly detection algorithms, with a particular focus on the aging phenomenon, linked to the anomalous modification of the <span></span><math>\u0000 <semantics>\u0000 <msub>\u0000 <mi>R</mi>\u0000 <mrow>\u0000 <mi>d</mi>\u0000 <msub>\u0000 <mi>s</mi>\u0000 <mrow>\u0000 <mo>(</mo>\u0000 <mi>o</mi>\u0000 <mi>n</mi>\u0000 <mo>)</mo>\u0000 </mrow>\u0000 </msub>\u0000 </mrow>\u0000 </msub>\u0000 <annotation>$R_{ds_{(on)}}$</annotation>\u0000 </semantics></math>, in devices switching in power electronic systems integrated into modern high-performance electrified vehicles. The case study concerns an electric drive for fully electrified vehicles, in which a three-phase axial flux synchronous motor integrated into a wheel motor (Elaphe) is used and in which a high-efficiency three-phase inverter, designed with SiC technology (silicon carbide). The article proposes the design and validation of the innovative aging monitoring and detection system, in four consecutive phases. The first phase involves the creation of a real-time model of electric drive, validated through experimental data extrapolated directly during a WLTP (Worldwide Harmonized Light Vehicle Test Procedure) test. The second phase consists of the creation of a virtual dataset representative of the aging phenomenon, via an anomaly injection procedure, emulating this phenomenon with a scaling factor (depending on the value of the <span></span><math>\u0000 <semantics>\u0000 <msub>\u0000 <mi>R</mi>\u0000 <mrow>\u0000 <mi>d</mi>\u0000 <msub>\u0000 <mi>s</mi>\u0000 <mrow>\u0000 <mo>(</mo>\u0000 <mi>o</mi>\u0000 <mi>n</mi>\u0000 <mo>)</mo>\u0000 </mrow>\u0000 </msub>\u0000 </mrow>\u0000 </msub>\u0000 <annotation>$R_{ds_{(on)}}$</annotation>\u0000 </semantics></math>) on the current phase of the motor, relating to the inverter branch whose SiC device is affected. The third phase concerns the design of an estimator of the <span></span><math>\u0000 <semantics>\u0000 <msub>\u0000 <mi>R</mi>\u0000 <mrow>\u0000 <mi>d</mi>\u0000 <msub>\u0000 <mi>s</mi>\u0000 <mrow>\u0000 <mo>(</mo>\u0000 <mi>o</mi>\u0000 ","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12679","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140147667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review of intentional electromagnetic interference in power electronics: Conducted and radiated susceptibility","authors":"Huamin Jie,&nbsp;Zhenyu Zhao,&nbsp;Yu Zeng,&nbsp;Yongqi Chang,&nbsp;Fei Fan,&nbsp;Changdong Wang,&nbsp;Kye Yak See","doi":"10.1049/pel2.12685","DOIUrl":"10.1049/pel2.12685","url":null,"abstract":"<p>With the advancements in Industry 4.0 and the global demand for sustainable energy, power electronics devices are emerging as pivotal components for modern industrial, transportation, and energy delivery. Ensuring the security of these devices is of paramount importance for safeguarding the reliable operation of critical systems against any threats. In recent years, the issue of intentional electromagnetic interference (IEMI) attack and their related countermeasures have gained widespread attention in both military and civilian power electronics sectors. Here, a review of IEMI in power electronics is provided. Starting from the electromagnetic compatibility standards, the test setups for evaluating the device immunity are introduced. Due to different attack modes and propagation paths, IEMI illuminations are typically categorized into conduction and radiation, where their susceptibility studies, applications, and defence strategies are discussed, respectively. Finally, the existing challenges, ongoing trends, and future topics in this field are discussed.</p>","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12685","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140147605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Front Cover: Automatic optimal design of field plate for silicon on insulator lateral double-diffused metal oxide semiconductor using simulated annealing algorithm","authors":"Jing Chen,&nbsp;Renji Xia,&nbsp;Jinwen You,&nbsp;Qing Yao,&nbsp;Yuxuan Dai,&nbsp;Jun Zhang,&nbsp;Jiafei Yao,&nbsp;Yufeng Guo","doi":"10.1049/pel2.12684","DOIUrl":"https://doi.org/10.1049/pel2.12684","url":null,"abstract":"<p>The cover image is based on the Original Research <i>Automatic optimal design of field plate for silicon on insulator lateral double-diffused metal oxide semiconductor using simulated annealing algorithm</i> by Jing Chen et al., https://doi.org/10.1049/pel2.12658.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12684","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140104378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Direct single-phase isolated improved gamma Z-source AC–AC converter suitable for DVR application","authors":"Alireza Razavi Majarshin,&nbsp;Ebrahim Babaei,&nbsp;Arash Khoshkbar-Sadigh","doi":"10.1049/pel2.12681","DOIUrl":"10.1049/pel2.12681","url":null,"abstract":"<p>A direct single-phase isolated improved gamma Z-source AC–AC converter is designed and manufactured in proposed paper. This converter contains an impedance source structure and its advantages. In general, these advantages are as follows. Firstly, the proposed structure has a wide range of output voltage as boost and buck as well as in-phase or out-of-phase states. Secondly, the proposed converter is electrically isolated thanks to a high frequency transformer (HFT), which significantly reduces the volume of the structure; therefore, in applications such as dynamic voltage restorer (DVR), there is no need to install a coupling transformer with the grid frequency which is very bulky and full of losses. Furthermore, the HFT of the proposed converter is a three winding transformer which also acts as the inductance needed for impedance source network. In addition, the safe commutation method has been utilized, which reduces the voltage spikes on the power switches. Finally, the analysis and design of this converter has been done, and then confirmed by a small-scale laboratory prototype.</p>","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12681","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140107264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Component design procedure for LCC-S wireless power transfer systems based on genetic algorithms and sensitivity analysis","authors":"Fabio Corti,&nbsp;Matteo Intravaia,&nbsp;Alberto Reatti,&nbsp;Francesco Grasso,&nbsp;Emanuele Grasso,&nbsp;Alicia Triviño Cabrera","doi":"10.1049/pel2.12648","DOIUrl":"10.1049/pel2.12648","url":null,"abstract":"<p>This paper introduces a novel approach for designing a Wireless Power Transfer (WPT) system with LCC-S compensation. Since WPT systems operate under resonant conditions, even small deviations of the components from the nominal values can result in a significant reduction of the power transferred to the load, and in an increment of the circulating currents, reducing the system efficiency. The design techniques available today in the literature provide a unique combination of passive components capable of transferring a certain power to the load. This is a limitation, because, in practice, there are several combinations that allow reaching the desired output power, but they are usually neglected because they are extremely difficult to compute analytically. For this reason, in this paper, the authors present an innovative design procedure that enables, through a Genetic Algorithm, the identification of multiple feasible combinations of the LCC-S components capable of achieving the desired output power. Moreover, the authors evaluate the effects of the component tolerances on the output power to determine which combinations are more robust to component variations. This task is performed by calculating the probability that a particular combination yields the desired output power, once the tolerances have been considered, following a Monte Carlo approach. This information is utilized to decide whether it is possible to reduce the component quality (worsening the tolerance) without affecting the performance. Finally, an optimal solution granting both low-cost and robustness against component tolerances can be individuated. The proposed design procedure is applied to a case study and validated experimentally.</p>","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12648","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140071029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quad-active-bridge converter with flexible power flow based on LC series resonance decoupling for renewable energy charging stations","authors":"Nenghong Xia,&nbsp;Xike Mao,&nbsp;Shuang Yan,&nbsp;Huaqi Ma,&nbsp;Mengqi Chen","doi":"10.1049/pel2.12680","DOIUrl":"10.1049/pel2.12680","url":null,"abstract":"<p>Integration of photovoltaic panels (PV) with electric vehicle (EV) charging stations could reduce the grid impact and carbon footprint from the extensive fast and ultra-fast charging. This paper introduces a decoupled quad-active-bridge converter (QAB) with multi-directional power flow capability, which can integrate PV, energy storage (ES), grid, and EV in a charging station and rule the power among them. As the number of ports increases in the multiple-active-bridge converter, the complexity of control increases exponentially because of power decoupling. For the QAB, by tuning one port in series with LC units, the decoupling is achieved between the other three ports, reducing the control difficulty significantly. Further, the resonance decoupling method is extended to the n-port converter. For different power flows, the system automatically switches between different resonance modes to form higher-efficiency power flow channels. Three operating modes with decoupled closed-loop control methods have been constructed for the QAB to be suitable for future charging stations: (1) Charging mode: PV, ES, and grid coordinate with each other to provide incessant and stable charging for EV. (2) Electricity sales mode: Gird is supplied by PV, ES, and EV flexibly. (3) Under no load, PV power is stored locally. Experimental waveforms were presented by a 1-kW prototype, verifying the effectiveness of power decoupling and the feasibility of the three operating modes.</p>","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12680","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140107260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced power supply circuitry with long duration and high-efficiency charging for indoor photovoltaic energy harvesting internet of things end device","authors":"Chung-Hsiang Wang,&nbsp;Kuo-Hsuan Huang,&nbsp;Chung-Yen Wu","doi":"10.1049/pel2.12683","DOIUrl":"10.1049/pel2.12683","url":null,"abstract":"<p>Light is a popular choice as an indoor energy source for Internet of Things (IoT) end devices. However, indoor light sources are intermittent, which can disrupt the operation of IoT end devices, potentially leading to safety concerns or inaccurate data. Therefore, there is a growing need to develop a long-duration power supply for IoT end devices. The energy from ambient light is harnessed to charge a supercapacitor through an energy manager chip. This supercapacitor serves as the power source for IoT nodes when the ambient light is unavailable. Nevertheless, as the voltage of the supercapacitor drops below the operating threshold, the IoT end node will eventually shut down. This paper proposes a circuit that utilizes a Joule Thief circuit, booster converter, and capacitor stack-up circuit to extract the remaining energy from the supercapacitor and boost the voltage, thereby extending the operational lifespan of IoT end nodes. Additionally, capacitor stack-up circuits significantly enhance charging efficiency. PSpice design and simulations confirm circuit feasibility. High-efficiency charging and long-duration IoT nodes suggest replacing traditional batteries with supercapacitors, reducing environmental impact.</p>","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12683","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140070892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Very high step-down coupled inductor two-phase buck converter with single magnetic element and inherent clamp voltage capability","authors":"Ahmad Ghamsari Esfahani,&nbsp;Ehsan Adib","doi":"10.1049/pel2.12678","DOIUrl":"10.1049/pel2.12678","url":null,"abstract":"<p>This paper proposed a new two-phase high step-down DC–DC converter is proposed. This converter is derived from the two-phase series-capacitor converter. The proposed converter replaces the series capacitor with a new structure that integrates Valley-Fill circuit and coupled-inductors concepts. This replacement can improve the voltage gain of the converter as well as a considerable reduction of diodes voltage stress. The proposed structure implements a dual-phase buck using a single magnetic element. Also, the proposed structure inherently limits the voltage spikes due to the leakage inductance of coupled inductors without any additional clamp circuit. The proposed converter is analyzed, and design guidelines are provided. A 300–24 V prototype converter is implemented to justify the validity of circuit operation and the theoretical analysis.</p>","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12678","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140070894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A simple estimation method of grid-forming inverter inertia based on rate of change of frequency","authors":"Gang Han,&nbsp;Liangli Xiong,&nbsp;Li You,&nbsp;Zaixun Ling,&nbsp;Manjia Liu,&nbsp;Yibo Cui,&nbsp;Sheng Zhang,&nbsp;Zhijian Fang","doi":"10.1049/pel2.12656","DOIUrl":"10.1049/pel2.12656","url":null,"abstract":"<p>Inertia is the core index of the estimation of power system frequency stability; a simple estimation method of grid-forming inverter inertia based on the rate of change of frequency (RoCoF) is proposed in this paper. The method records and fits the active power curve by applying RoCoF to obtain the value of the grid-forming inverter inertia, and it is simpler and higher accuracy compared to existing methods. In addition, the inertia and damping are analysed to support the system, and the relationship equation between the grid frequency slope change and the output active power is derived. Considering the theoretical analyses and influencing factors, the inertia and damping are obtained by using the method of function fitting. The test steps show the simplicity of the proposed test method. Finally, the effectiveness of the proposed method is verified in MATLAB/Simulation and two 1.575-MW parallel grid-forming electrochemical energy storage power plants.</p>","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12656","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140070893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}