Pub Date : 2024-12-31DOI: 10.1109/JESTIE.2024.3494095
{"title":"Journal of Emerging and Selected Topics in Industrial Electronics Publication Information","authors":"","doi":"10.1109/JESTIE.2024.3494095","DOIUrl":"https://doi.org/10.1109/JESTIE.2024.3494095","url":null,"abstract":"","PeriodicalId":100620,"journal":{"name":"IEEE Journal of Emerging and Selected Topics in Industrial Electronics","volume":"6 1","pages":"C2-C2"},"PeriodicalIF":0.0,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10819269","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-31DOI: 10.1109/JESTIE.2024.3494097
{"title":"Officers and Vice Presidents of Co-Sponsoring Societies Information","authors":"","doi":"10.1109/JESTIE.2024.3494097","DOIUrl":"https://doi.org/10.1109/JESTIE.2024.3494097","url":null,"abstract":"","PeriodicalId":100620,"journal":{"name":"IEEE Journal of Emerging and Selected Topics in Industrial Electronics","volume":"6 1","pages":"C3-C3"},"PeriodicalIF":0.0,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10819028","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-30DOI: 10.1109/JESTIE.2024.3523937
Himanshu Swami;Amit Kumar Jain
In this article, a novel E/F control algorithm is proposed for the three-phase squirrel cage induction motor based on its rotor-flux-oriented model. The proposed scheme is meant for a current-sensor-less induction motor drive operating with speed feedback, and it offers an attractive solution to various problems associated with the traditional V/F type of induction motor drive unit. The speed control loop of the proposed scheme emulates the back-electromotive force of the motor and not the terminal voltage, and therefore, the decrease in the magnetizing flux in the low-speed region is overcome. In addition, the low-speed operation becomes possible with the proposed E/F scheme, which is difficult to realize with the traditional V/F motor drive unit. Moreover, since the proposed strategy is based on the rotor-flux-oriented model of the motor, it gives performance that is on par with a vector-controlled induction motor drive unit, and the control algorithm is simplified. The proposed scheme is validated using simulation and verified using a fractional horse-power squirrel-cage induction machine coupled to a separately excited dc machine. To emphasize its performance, it is also compared with the vector-control algorithm.
{"title":"A Novel E/F Controller for Squirrel Cage Induction Motor Based on Rotor Flux Orientation","authors":"Himanshu Swami;Amit Kumar Jain","doi":"10.1109/JESTIE.2024.3523937","DOIUrl":"https://doi.org/10.1109/JESTIE.2024.3523937","url":null,"abstract":"In this article, a novel E/F control algorithm is proposed for the three-phase squirrel cage induction motor based on its rotor-flux-oriented model. The proposed scheme is meant for a current-sensor-less induction motor drive operating with speed feedback, and it offers an attractive solution to various problems associated with the traditional V/F type of induction motor drive unit. The speed control loop of the proposed scheme emulates the back-electromotive force of the motor and not the terminal voltage, and therefore, the decrease in the magnetizing flux in the low-speed region is overcome. In addition, the low-speed operation becomes possible with the proposed E/F scheme, which is difficult to realize with the traditional V/F motor drive unit. Moreover, since the proposed strategy is based on the rotor-flux-oriented model of the motor, it gives performance that is on par with a vector-controlled induction motor drive unit, and the control algorithm is simplified. The proposed scheme is validated using simulation and verified using a fractional horse-power squirrel-cage induction machine coupled to a separately excited dc machine. To emphasize its performance, it is also compared with the vector-control algorithm.","PeriodicalId":100620,"journal":{"name":"IEEE Journal of Emerging and Selected Topics in Industrial Electronics","volume":"6 2","pages":"643-653"},"PeriodicalIF":0.0,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The aging and breakdown of ground-wall (GW) insulation in electric motors may lead to serious faults and safety accidents, so predicting the life of GW insulation materials is important. In this article, high temperature accelerated degradation tests are performed on polyimide (PI) film, a kind of GW insulation material widely used in electric motors, to obtain its four key insulation indexes under accelerated stress, including insulation resistance, insulation capacitance, tangent of dielectric loss angle and maximum partial discharge. Experiment results show that a single model cannot accurately simulate the evolution of maximum partial discharge, due to the different failure mechanisms under different temperature stresses. Therefore, a Wiener-inverse Gaussian (IG) fusion model is proposed to predict the maximum partial discharge of PI film, and together with the Arrhenius model, the life of PI film under different temperatures can be predicted. Further experimental verification has been performed, and the accuracy of the proposed fusion model is demonstrated from multiple perspectives by using the methods of Kolmogorov–Smirnov test, Akaike information criterion, and area ratio based on the data from experimental verification. The proposed Wiener-IG fusion model can better fit the degradation data under different failure mechanisms, and then can be used to predict the life of GW insulation material.
{"title":"Life Prediction of Ground-Wall Insulation Material in Electric Motors Based on Accelerated Degradation Test under Different Failure Mechanisms","authors":"Shihu Xiang;Guiheng Li;Feng Zhou;Shaopo Huang;Zijun Xu;Guanlong Jia;Feng Niu","doi":"10.1109/JESTIE.2024.3522001","DOIUrl":"https://doi.org/10.1109/JESTIE.2024.3522001","url":null,"abstract":"The aging and breakdown of ground-wall (GW) insulation in electric motors may lead to serious faults and safety accidents, so predicting the life of GW insulation materials is important. In this article, high temperature accelerated degradation tests are performed on polyimide (PI) film, a kind of GW insulation material widely used in electric motors, to obtain its four key insulation indexes under accelerated stress, including insulation resistance, insulation capacitance, tangent of dielectric loss angle and maximum partial discharge. Experiment results show that a single model cannot accurately simulate the evolution of maximum partial discharge, due to the different failure mechanisms under different temperature stresses. Therefore, a Wiener-inverse Gaussian (IG) fusion model is proposed to predict the maximum partial discharge of PI film, and together with the Arrhenius model, the life of PI film under different temperatures can be predicted. Further experimental verification has been performed, and the accuracy of the proposed fusion model is demonstrated from multiple perspectives by using the methods of Kolmogorov–Smirnov test, Akaike information criterion, and area ratio based on the data from experimental verification. The proposed Wiener-IG fusion model can better fit the degradation data under different failure mechanisms, and then can be used to predict the life of GW insulation material.","PeriodicalId":100620,"journal":{"name":"IEEE Journal of Emerging and Selected Topics in Industrial Electronics","volume":"6 2","pages":"654-663"},"PeriodicalIF":0.0,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143840140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-23DOI: 10.1109/JESTIE.2024.3521391
Guopeng Zhao;Xiaoyin Li
The thyristor rectifier with two cascaded active power filters in parallel has a larger capacity and a higher power quality. However, there is a circulating current between the thyristor rectifier and the cascaded active power filters. This article proposes an analysis and suppression of the circulating current. First, based on switching functions or driving pulses, equivalent circuits of circulating current loops are obtained, and the circulating current contains a low-frequency component and a high-frequency component, in which the low-frequency circulating current is caused by the source voltage and the on-off states of thyristors in the thyristor rectifier, and the high-frequency circulating current is determined by the dc-link voltage and the loop inductance. Secondly, a suppression method of the low-frequency circulating current is presented without changing the switching frequency and the switching losses through adding additional two modulation voltages to the output voltages of the dc side active power filter. The proposed suppression method prevents the generation cause of the circulating current. Then, an improved suppression performance can be obtained for the dynamic process of circulating current suppression. And, passive suppression methods of the high-frequency circulating current are also presented based on the analysis of the value of the high-frequency circulating current.
{"title":"Analysis and Suppression of Circulating Current in Thyristor Rectifier With Two Cascaded Active Power Filters in Parallel","authors":"Guopeng Zhao;Xiaoyin Li","doi":"10.1109/JESTIE.2024.3521391","DOIUrl":"https://doi.org/10.1109/JESTIE.2024.3521391","url":null,"abstract":"The thyristor rectifier with two cascaded active power filters in parallel has a larger capacity and a higher power quality. However, there is a circulating current between the thyristor rectifier and the cascaded active power filters. This article proposes an analysis and suppression of the circulating current. First, based on switching functions or driving pulses, equivalent circuits of circulating current loops are obtained, and the circulating current contains a low-frequency component and a high-frequency component, in which the low-frequency circulating current is caused by the source voltage and the on-off states of thyristors in the thyristor rectifier, and the high-frequency circulating current is determined by the dc-link voltage and the loop inductance. Secondly, a suppression method of the low-frequency circulating current is presented without changing the switching frequency and the switching losses through adding additional two modulation voltages to the output voltages of the dc side active power filter. The proposed suppression method prevents the generation cause of the circulating current. Then, an improved suppression performance can be obtained for the dynamic process of circulating current suppression. And, passive suppression methods of the high-frequency circulating current are also presented based on the analysis of the value of the high-frequency circulating current.","PeriodicalId":100620,"journal":{"name":"IEEE Journal of Emerging and Selected Topics in Industrial Electronics","volume":"6 3","pages":"982-992"},"PeriodicalIF":0.0,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144657549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-20DOI: 10.1109/JESTIE.2024.3520345
Chunwei Ma;Kai Yao;Fanguang Shao;Chunyan Mao
To eliminate the inherent dead zone of the buck power factor correction (PFC) converter, integrated buck PFC converters, such as buck–flyback PFC converter and buck–buck/boost PFC converter, have been proposed. Traditionally, constant on-time (COT) control is used to regulate these converters in critical conduction mode (CRM). However, the switching frequencies of these PFC converters with COT vary greatly during a line cycle, which complicates the design of the electromagnetic interference filter. In this article, a novel fixed switching frequency control (FFC) strategy and a novel dual fixed switching frequency control (DFFC) strategy are put forward for the CRM buck–flyback PFC converter and the CRM buck–buck/boost PFC converter, respectively. The switching frequency of the CRM buck–flyback PFC converter with FFC remains constant in a line cycle, and that of the CRM buck–buck/boost PFC converter with DFFC is fixed in buck operation and buck/boost operation separately. In addition, the turn ratio of the buck–flyback PFC converter's transformer and the switching frequency of the buck–buck/boost PFC converter are optimized to make the power factor and the total harmonic distortion meet standards, such as ENERGY STAR and IEC 61000-3-2. The experimental results are given to verify the effectiveness of the proposed methods.
{"title":"Fixed Switching Frequency Controls for Integrated Buck PFC Converters in Critical Conduction Mode","authors":"Chunwei Ma;Kai Yao;Fanguang Shao;Chunyan Mao","doi":"10.1109/JESTIE.2024.3520345","DOIUrl":"https://doi.org/10.1109/JESTIE.2024.3520345","url":null,"abstract":"To eliminate the inherent dead zone of the buck power factor correction (PFC) converter, integrated buck PFC converters, such as buck–flyback PFC converter and buck–buck/boost PFC converter, have been proposed. Traditionally, constant <sc>on</small>-time (COT) control is used to regulate these converters in critical conduction mode (CRM). However, the switching frequencies of these PFC converters with COT vary greatly during a line cycle, which complicates the design of the electromagnetic interference filter. In this article, a novel fixed switching frequency control (FFC) strategy and a novel dual fixed switching frequency control (DFFC) strategy are put forward for the CRM buck–flyback PFC converter and the CRM buck–buck/boost PFC converter, respectively. The switching frequency of the CRM buck–flyback PFC converter with FFC remains constant in a line cycle, and that of the CRM buck–buck/boost PFC converter with DFFC is fixed in buck operation and buck/boost operation separately. In addition, the turn ratio of the buck–flyback PFC converter's transformer and the switching frequency of the buck–buck/boost PFC converter are optimized to make the power factor and the total harmonic distortion meet standards, such as ENERGY STAR and IEC 61000-3-2. The experimental results are given to verify the effectiveness of the proposed methods.","PeriodicalId":100620,"journal":{"name":"IEEE Journal of Emerging and Selected Topics in Industrial Electronics","volume":"6 2","pages":"790-801"},"PeriodicalIF":0.0,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-19DOI: 10.1109/JESTIE.2024.3520617
Mohammad Reza Gholipour;Hesamodin Allahyari;Hamid Bahrami;Hamid Ebrahimi;Ehsan Adib
A novel bidirectional forward converter with zero voltage switching (ZVS) characteristic is proposed in this article. The converter utilizes a variable turns ratio transformer, enabling the change of the operational mode. The converter includes two power mosfets paralleled by two capacitors to achieve ZVS conditions and the demagnetization of the transformer core. The pulsewidth modulation control approach has been chosen to regulate the output voltage of the converter, simplifying its performance and design. Depending on the converter operation mode, the transformer turns ratio is modified using a magnetic approach to achieve the necessary voltage gain. This transformer type enhances the reliability of the converter compared to a relay-based converter. The magnetizing inductance of the transformer also holds substantial value, resulting in a notable reduction in circulating current and, consequently, a considerable improvement in converter efficiency, especially under light load conditions. The leakage inductance of the transformer plays a crucial role in energy transfer within the converter. A comprehensive theoretical analysis, small-signal analysis, and finite element analysis simulations of the transformer are presented. The validity of the theoretical analyses has been confirmed through experimental results.
{"title":"A PWM Controlled Bidirectional Forward Converter With Zero Voltage Switching and Utilizing Variable Turns Ratio Transformer","authors":"Mohammad Reza Gholipour;Hesamodin Allahyari;Hamid Bahrami;Hamid Ebrahimi;Ehsan Adib","doi":"10.1109/JESTIE.2024.3520617","DOIUrl":"https://doi.org/10.1109/JESTIE.2024.3520617","url":null,"abstract":"A novel bidirectional forward converter with zero voltage switching (ZVS) characteristic is proposed in this article. The converter utilizes a variable turns ratio transformer, enabling the change of the operational mode. The converter includes two power <sc>mosfets</small> paralleled by two capacitors to achieve ZVS conditions and the demagnetization of the transformer core. The pulsewidth modulation control approach has been chosen to regulate the output voltage of the converter, simplifying its performance and design. Depending on the converter operation mode, the transformer turns ratio is modified using a magnetic approach to achieve the necessary voltage gain. This transformer type enhances the reliability of the converter compared to a relay-based converter. The magnetizing inductance of the transformer also holds substantial value, resulting in a notable reduction in circulating current and, consequently, a considerable improvement in converter efficiency, especially under light load conditions. The leakage inductance of the transformer plays a crucial role in energy transfer within the converter. A comprehensive theoretical analysis, small-signal analysis, and finite element analysis simulations of the transformer are presented. The validity of the theoretical analyses has been confirmed through experimental results.","PeriodicalId":100620,"journal":{"name":"IEEE Journal of Emerging and Selected Topics in Industrial Electronics","volume":"6 3","pages":"1013-1026"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144657438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-18DOI: 10.1109/JESTIE.2024.3520247
Alexander Abramovitz;Moshe Shvartsas;Alon Kuperman
The letter discusses the performance of clamped-type active magnetic energy harvester (MEH), supplying power to a constant-voltage-type load via transfer-window-alignment controlled rectifier. The presented analysis investigates practical harvesting potential of active MEH operating under high primary currents and compares it to that of a passive (uncontrolled rectifier equipped) MEH. It is revealed that harvested active MEH power may be increased for a given core by reducing the number of secondary conductor turns N, yet it is accompanied with escalated current ratings of secondary conductor and rectifier components. Theoretical harvesting potential of active MEH is shown to be ∼38% higher than that of an optimally designed passive MEH utilizing the same magnetic core under similar operating conditions (i.e., primary current magnitude and load voltage). However, somewhat lower figure of merit should be expected in practice since N cannot be reduced to zero. Experimental results of active MEH harvesting ∼285 W (which is ∼95% of the theoretical upper harvested power bound) from a conductor carrying 300Arms at 50 Hz validate the revealed findings.
{"title":"Performance of Active Magnetic Energy Harvesters Feeding Constant-Voltage-Type Loads Under High Primary Currents","authors":"Alexander Abramovitz;Moshe Shvartsas;Alon Kuperman","doi":"10.1109/JESTIE.2024.3520247","DOIUrl":"https://doi.org/10.1109/JESTIE.2024.3520247","url":null,"abstract":"The letter discusses the performance of clamped-type active magnetic energy harvester (MEH), supplying power to a constant-voltage-type load via transfer-window-alignment controlled rectifier. The presented analysis investigates practical harvesting potential of active MEH operating under high primary currents and compares it to that of a passive (uncontrolled rectifier equipped) MEH. It is revealed that harvested active MEH power may be increased for a given core by reducing the number of secondary conductor turns <italic>N</i>, yet it is accompanied with escalated current ratings of secondary conductor and rectifier components. Theoretical harvesting potential of active MEH is shown to be ∼38% higher than that of an optimally designed passive MEH utilizing the same magnetic core under similar operating conditions (i.e., primary current magnitude and load voltage). However, somewhat lower figure of merit should be expected in practice since <italic>N</i> cannot be reduced to zero. Experimental results of active MEH harvesting ∼285 W (which is ∼95% of the theoretical upper harvested power bound) from a conductor carrying 300A<sub>rms</sub> at 50 Hz validate the revealed findings.","PeriodicalId":100620,"journal":{"name":"IEEE Journal of Emerging and Selected Topics in Industrial Electronics","volume":"6 4","pages":"1873-1878"},"PeriodicalIF":4.0,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145289549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-16DOI: 10.1109/JESTIE.2024.3517713
Akshay Chabukswar;Rupesh Wandhare
This article describes a robust dual-loop proportional-integral-based control technique used in a dc microgrid. The proposed technique is implemented on a dc–dc half-bridge boost converter as a hybrid constant switching frequency pulse width modulation sliding-mode control (SMC) technique. The hybrid SMC includes a linear sliding manifold (SM)-based double-integral SMC (DI-SMC) technique combined with nonlinear nonsingular extended-order fixed-time terminal SMC (EOFT+DI-SMC). The dual-loop control structure includes an outer output voltage control loop and an inner average inductor current control loop. The proposed EOFT+DI-SMC technique is based on a modified equivalent control law derived by considering a specific orientation of a sliding curve given by the intersection of SM and its orthogonal manifold for faster response and reduced chattering. The EOFT principle is used to modify an equivalent control law derived using the sliding curve principle, to enable disturbance rejection with minimal dependency on an observer. Furthermore, feedforward gains of the control loop are tuned in real time adaptively using the existence condition of SMC considering state boundary value conditions and small-signal stability analysis. The novel EOFT+DI-SMC principle is proved mathematically in terms of the equivalent control law, Lyapunov stability analysis, and fixed-time convergence. The proposed control technique is simulated using MATLAB/Simulink tool. An experimental prototype of a half-bridge converter is developed and tested to validate the proposed technique.
{"title":"Adaptive Feedforward Sliding Curve-Based Hybrid Fixed-Time Extended-Order Terminal Sliding-Mode Control for DC Microgrids","authors":"Akshay Chabukswar;Rupesh Wandhare","doi":"10.1109/JESTIE.2024.3517713","DOIUrl":"https://doi.org/10.1109/JESTIE.2024.3517713","url":null,"abstract":"This article describes a robust dual-loop proportional-integral-based control technique used in a dc microgrid. The proposed technique is implemented on a dc–dc half-bridge boost converter as a hybrid constant switching frequency pulse width modulation sliding-mode control (SMC) technique. The hybrid SMC includes a linear sliding manifold (SM)-based double-integral SMC (DI-SMC) technique combined with nonlinear nonsingular extended-order fixed-time terminal SMC (EOFT+DI-SMC). The dual-loop control structure includes an outer output voltage control loop and an inner average inductor current control loop. The proposed EOFT+DI-SMC technique is based on a modified equivalent control law derived by considering a specific orientation of a sliding curve given by the intersection of SM and its orthogonal manifold for faster response and reduced chattering. The EOFT principle is used to modify an equivalent control law derived using the sliding curve principle, to enable disturbance rejection with minimal dependency on an observer. Furthermore, feedforward gains of the control loop are tuned in real time adaptively using the existence condition of SMC considering state boundary value conditions and small-signal stability analysis. The novel EOFT+DI-SMC principle is proved mathematically in terms of the equivalent control law, Lyapunov stability analysis, and fixed-time convergence. The proposed control technique is simulated using MATLAB/Simulink tool. An experimental prototype of a half-bridge converter is developed and tested to validate the proposed technique.","PeriodicalId":100620,"journal":{"name":"IEEE Journal of Emerging and Selected Topics in Industrial Electronics","volume":"6 2","pages":"719-730"},"PeriodicalIF":0.0,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-13DOI: 10.1109/JESTIE.2024.3515094
Song Lu;Hongbo Ma;Junpeng Li;Xiaobin Li;Zhongcai Qiu;Jianping Xu;Quanyuan Feng
The traditional boost-LLCsingle-stage ac/dc converter has been attractive because of its soft switching feature and simple structure. Unfortunately, high and significantly varying bus voltage, as well as narrow load range greatly hinder its application at high voltage input. Therefore, this article proposes a novel soft-switched single-stage ac/dc converter for high voltage input applications. Aiming at the high bus voltage issue, a boost power factor correction (PFC) cell with inherent boundary conduction mode operation is adopted. Meanwhile, a nonresonant half-bridge dc/dc is incorporated to make the power transmission characteristics of the PFC and dc/dc cells more consistent. As a result, the proposed converter can achieve a broader load range and quasi-constant bus voltage compared to the previous approaches. Furthermore, an improved pulse frequency modulation (PFM) control is put forward so that the PFC performance under high inputs can be greatly enhanced. To validate the claimed features, a 104 W prototype was built in the laboratory, operating with an input range of 180 to 260 V and an output voltage of 52 V. Experimental results show that the following. 1) Low and quasi-constant bus voltage during the operation ranges is achieved. 2) Under PFM control, a broader load range across entire inputs is realized, ranging from 30%–100%. 3) The prototype exhibited good overall performance, achieving a peak efficiency of 93.8% and a nominal efficiency of 93.3% at full load. Meanwhile, the measured nominal power factor (PF) and minimum PF under full load conditions reached 0.991 and 0.987, respectively.
{"title":"A Novel Soft-Switched Single-Stage AC/DC Converter Integrated BCM PFC and Nonresonant DC–DC Cell With High PFC Performance and Wide Load Operation Range","authors":"Song Lu;Hongbo Ma;Junpeng Li;Xiaobin Li;Zhongcai Qiu;Jianping Xu;Quanyuan Feng","doi":"10.1109/JESTIE.2024.3515094","DOIUrl":"https://doi.org/10.1109/JESTIE.2024.3515094","url":null,"abstract":"The traditional boost-<italic>LLC</i>single-stage ac/dc converter has been attractive because of its soft switching feature and simple structure. Unfortunately, high and significantly varying bus voltage, as well as narrow load range greatly hinder its application at high voltage input. Therefore, this article proposes a novel soft-switched single-stage ac/dc converter for high voltage input applications. Aiming at the high bus voltage issue, a boost power factor correction (PFC) cell with inherent boundary conduction mode operation is adopted. Meanwhile, a nonresonant half-bridge dc/dc is incorporated to make the power transmission characteristics of the PFC and dc/dc cells more consistent. As a result, the proposed converter can achieve a broader load range and quasi-constant bus voltage compared to the previous approaches. Furthermore, an improved pulse frequency modulation (PFM) control is put forward so that the PFC performance under high inputs can be greatly enhanced. To validate the claimed features, a 104 W prototype was built in the laboratory, operating with an input range of 180 to 260 V and an output voltage of 52 V. Experimental results show that the following. 1) Low and quasi-constant bus voltage during the operation ranges is achieved. 2) Under PFM control, a broader load range across entire inputs is realized, ranging from 30%–100%. 3) The prototype exhibited good overall performance, achieving a peak efficiency of 93.8% and a nominal efficiency of 93.3% at full load. Meanwhile, the measured nominal power factor (PF) and minimum PF under full load conditions reached 0.991 and 0.987, respectively.","PeriodicalId":100620,"journal":{"name":"IEEE Journal of Emerging and Selected Topics in Industrial Electronics","volume":"6 2","pages":"814-826"},"PeriodicalIF":0.0,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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