Journal of Power Electronics最新文献_第10页

Laminated nanocrystalline-ferrite high saturation magnetic flux density composite core for use in high-frequency transformers 用于高频变压器的层状纳米晶铁氧体高饱和磁通密度复合磁芯

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-12 DOI: 10.1007/s43236-024-00814-4

Nenghong Xia, Mengqi Chen, Xike Mao, Shuang Yan, Huaqi Ma

{"title":"Laminated nanocrystalline-ferrite high saturation magnetic flux density composite core for use in high-frequency transformers","authors":"Nenghong Xia, Mengqi Chen, Xike Mao, Shuang Yan, Huaqi Ma","doi":"10.1007/s43236-024-00814-4","DOIUrl":"https://doi.org/10.1007/s43236-024-00814-4","url":null,"abstract":"The low power density and high frequency loss of the core limits the miniaturization of high-frequency transformers (HFT) with an increase of the switching frequency. In this paper, a composite core with laminated nanocrystalline films and ferrite sheets is proposed based on the high saturation magnetic flux density of nanocrystalline and the low loss of ferrite. The two materials are laminated at a certain thickness ratio to form a composite unit. Then multiple layers of units are stacked to form the composite core. A homogenization model is established to calculate the equivalent permeability. Then the magnetic field strength of the composite core can be obtained, which can be used to calculate the magnetic flux density in different materials. An optimization model is built with the objective of optimizing the core loss and power density by adjusting the thickness ratio. Based on the non-dominated sorting genetic algorithm II (NSGA-II), it obtains the optimal thickness ratio. Simulation results show that the composite core increases the magnetic flux density from 0.3 T to 0.55 T over a ferrite core. A 100 V/200 V, 1 kW, 20 kHz composite core HFT prototype is developed. The power density is increased by 23.5% when compared to a ferrite HFT. The core loss is reduced by 37% when compared to nanocrystalline HFT, and the efficiency is increased from 94% to 96.5%.","PeriodicalId":50081,"journal":{"name":"Journal of Power Electronics","volume":"31 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140583245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hybrid-paralleled power-factor-correction system for high-power equipment harmonic suppression 用于抑制大功率设备谐波的混合并联功率因数校正系统

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-12 DOI: 10.1007/s43236-024-00807-3

Tiansheng Zhu, Guiping Du, Zhuofeng Deng, Yanxiong Lei

{"title":"Hybrid-paralleled power-factor-correction system for high-power equipment harmonic suppression","authors":"Tiansheng Zhu, Guiping Du, Zhuofeng Deng, Yanxiong Lei","doi":"10.1007/s43236-024-00807-3","DOIUrl":"https://doi.org/10.1007/s43236-024-00807-3","url":null,"abstract":"This paper proposes a novel power-factor-correction system for the harmonic suppression of high-power equipment. It connects a PWM (pulse width modulation) rectifier and several uncontrolled diode rectifier units in parallel. The PWM rectifier is not connected to the load, and the power of the IGBT device is lower than that of the traditional PWM rectifier. The diode rectifier unit is connected in parallel without the loop current, which is convenient for expansion. The diode rectifier unit can still work when the IGBT fails, which enables high reliability. When compared to conventional APFs (active power filters), the proposed system only controls the grid current as a sinusoidal wave at the power frequency, without tracking harmonics, which makes the control simpler and the current THD (total harmonic distortion) lower. In this paper, the operating modes of the proposed parallel system are analyzed and the mathematical model of the circuit is derived. In addition, the corresponding control strategy is proposed and the parameters of the LCL are designed. Finally, simulations were carried out to demonstrate the superiority of the proposed parallel system when compared with the traditional APF, and a 60 kW experimental platform was built to demonstrate the feasibility of the proposed scheme.","PeriodicalId":50081,"journal":{"name":"Journal of Power Electronics","volume":"39 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140583500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identification of failure modes in interior permanent magnet synchronous motor under accelerated life test based on dual sensor architecture 基于双传感器结构的加速寿命测试中内部永磁同步电机故障模式的识别

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-12 DOI: 10.1007/s43236-024-00810-8

Sikgyeong Choi, Jaewook Oh, Juho Lee, Woyeong Kwon, Jeonghae Lee, Inhyeok Hwang, Jongbum Park, Namsu Kim

{"title":"Identification of failure modes in interior permanent magnet synchronous motor under accelerated life test based on dual sensor architecture","authors":"Sikgyeong Choi, Jaewook Oh, Juho Lee, Woyeong Kwon, Jeonghae Lee, Inhyeok Hwang, Jongbum Park, Namsu Kim","doi":"10.1007/s43236-024-00810-8","DOIUrl":"https://doi.org/10.1007/s43236-024-00810-8","url":null,"abstract":"Recently, the permanent magnet synchronous motors (PMSMs) are considered to be one of the best options for electrical motor due to their high power density and efficiency for various applications including industrial robot and smart mobility. However, the safety and reliability of the PMSM have not been verified sufficiently when compared to the conventional induction motor. The failure of electric motor can lead to catastrophic failure of entire system, so it is important to detect potential failure modes or signs in advance. In this paper, an accelerated life test was carried out to induce and investigate the failure modes of PMSM and various signals were monitored to detect the types of failure modes during the test. The shaft of the motor was radially loaded to accelerate the failure of PMSM. The phase current, temperature, displacement of the shaft, and vibration were monitored to estimate the health state of the motor. As a result, the bearing and the shaft were the most vulnerable components under radially loaded condition. Also, it is proved that the different failure modes can be successfully detected and classified by monitoring the phase current and vibration signal.","PeriodicalId":50081,"journal":{"name":"Journal of Power Electronics","volume":"222 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140583282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Active decoupling control of the three-phase voltage source converter under nonlinear AC current 非线性交流电流下三相电压源转换器的有源去耦控制

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-12 DOI: 10.1007/s43236-024-00811-7

Tao Yang, Tao Wang, Yiru Miao

{"title":"Active decoupling control of the three-phase voltage source converter under nonlinear AC current","authors":"Tao Yang, Tao Wang, Yiru Miao","doi":"10.1007/s43236-024-00811-7","DOIUrl":"https://doi.org/10.1007/s43236-024-00811-7","url":null,"abstract":"The low-harmonic (LOH) voltage of the DC link of three-phase voltage source converter (VSC) requires a large aluminum electrolytic capacitor for suppression under nonlinear AC current. Consequently, this work proposes an active decoupling control method combining DC-link LOH voltage closed loop and LOH current feedforward based on a DC–DC converter. This methodology effectively transfers the DC-link LOH voltage to the smaller-sized decoupling capacitor in the DC–DC converter, thereby reducing the number of capacitors required to stabilize of the VSC DC-link voltage. This work first investigates the relationship between the DC-link LOH voltage and the VSC nonlinear current. Second, a mathematical model for the decoupling capacitor voltage is derived, indicating that its voltage form is complex under nonlinear AC current, making direct voltage control arduous. Subsequently, the principle and design process of the proposed active decoupling control strategy are analyzed in detail. A dedicated fast-response filter structure is also utilized to extract the feedback LOH voltage and feedforward LOH current in the DC link. Meanwhile, a simple control strategy for the DC component of the decoupling capacitor voltage is proposed to improve the utilization of the decoupling capacitor. Finally, the effectiveness and correctness of the method are experimentally verified.","PeriodicalId":50081,"journal":{"name":"Journal of Power Electronics","volume":"25 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140583289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel series LC resonance DC fault current limiter 新型串联 LC 谐振直流故障电流限制器

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-12 DOI: 10.1007/s43236-024-00818-0

Jinyi Deng, Huan Guo, Yinghua Ye, Ming Liu

引用次数: 0

Hardware simulator of DC–AC inverters for electric compressors 用于电动压缩机的直流-交流变频器硬件模拟器

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-12 DOI: 10.1007/s43236-024-00816-2

Yeongsu Bak

引用次数: 0

A novel direct torque control method for switched reluctance motors based on optimal turn-on angle 基于最佳开启角的开关磁阻电机新型直接转矩控制方法

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-12 DOI: 10.1007/s43236-024-00805-5

Ping Ren, Jingwei Zhu, Yan Zhao, Zhe Jing

{"title":"A novel direct torque control method for switched reluctance motors based on optimal turn-on angle","authors":"Ping Ren, Jingwei Zhu, Yan Zhao, Zhe Jing","doi":"10.1007/s43236-024-00805-5","DOIUrl":"https://doi.org/10.1007/s43236-024-00805-5","url":null,"abstract":"In view of the disadvantages of negative torque and low operation efficiency in the traditional direct torque control (DTC) for the switched reluctance motor drive (SRD), a novel DTC strategy based on optimal turn-on angle is proposed in this paper. First, the flux hysteresis controller of the traditional DTC is cancelled and the SRM is only controlled by the torque hysteresis controller. The actual rotor position angle is used to divide the sectors instead of the angle calculated by the stator flux, which does not need to select the optimal given flux value, and makes the division of sectors more in line with the inductance characteristics of the SRM. Second, the function for calculating the optimal turn-on angle is designed and the sectors are reallocated. The optimal voltage vector is selected according to the output signal of the torque hysteresis controller and sector position. Finally, the 12-sector DTC method is selected as comparison algorithm and the correctness of the proposed method is confirmed by simulation and experimental results. It is demonstrated that the proposed strategy retains the advantages of the simple structure of the traditional DTC. In addition, it eliminates negative torque, improves the DC bus voltage utilization and torque ampere ratio, and reduces the torque ripple, switching frequency and copper losses.","PeriodicalId":50081,"journal":{"name":"Journal of Power Electronics","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140583070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on improving the reliability and reducing the weight of battery packs for railway vehicles 关于提高铁路车辆电池组可靠性和减轻其重量的研究

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-12 DOI: 10.1007/s43236-024-00817-1

Beom-Jun Kim, Seok-Jin Na, In-Ho Cho

{"title":"Research on improving the reliability and reducing the weight of battery packs for railway vehicles","authors":"Beom-Jun Kim, Seok-Jin Na, In-Ho Cho","doi":"10.1007/s43236-024-00817-1","DOIUrl":"https://doi.org/10.1007/s43236-024-00817-1","url":null,"abstract":"In the railway industry, there is ongoing research on incorporating large-capacity energy storage system (ESS) into railway vehicles to reduce carbon emissions and enhance energy efficiency. Lithium-ion batteries are widely used in ESSs due to their high energy density. However, their high chemical reactivity can lead to a higher risk of malfunction. This compromises the reliability of railway vehicles using a high-capacity ESS as a propulsion power source. This study aims to improve the reliability of the battery packs used in railway vehicles by introducing a novel circuit configuration that integrates a bypass circuit into the traditional redundant circuit configuration used in lithium batteries. In conventional ESS systems, an additional battery pack needs to be equipped to sustain normal operation in the case of a battery malfunction event. However, this leads to a substantial increase in the volume and weight of the ESS. The circuit configuration proposed in this paper guarantees the normal operation of the ESS in the case of a battery failure using a few additional circuit components. The feasibility of the proposed circuit configuration and its operation are examined using railway vehicle battery pack specifications.","PeriodicalId":50081,"journal":{"name":"Journal of Power Electronics","volume":"14 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140583230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On-line minimum loss control strategy of IPMSM in torque-controlled application 转矩控制应用中 IPMSM 的在线最小损耗控制策略

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-09 DOI: 10.1007/s43236-024-00773-w

Young-Wook Kim, Hwigon Kim, Jaeyeon Park, Seung-Ki Sul

{"title":"On-line minimum loss control strategy of IPMSM in torque-controlled application","authors":"Young-Wook Kim, Hwigon Kim, Jaeyeon Park, Seung-Ki Sul","doi":"10.1007/s43236-024-00773-w","DOIUrl":"https://doi.org/10.1007/s43236-024-00773-w","url":null,"abstract":"This study proposes an on-line minimum loss (ML) control strategy that considers the iron and copper losses of an interior permanent magnet synchronous motor in torque-controlled applications. The proposed ML control strategy utilizes a constrained optimization problem to satisfy torque reference tracking and loss minimization. An equivalent iron loss resistance circuit is adopted for the loss minimization. To solve the optimization problem, the Lagrange multiplier method is applied through a numerical analysis algorithm. The resulting solution provides the optimal current reference for every sampling instant. The Lagrange multiplier method needs parameters such as magnetic flux linkages, dynamic inductances, and iron loss resistance. Fundamental magnetic flux linkages are estimated using a flux observer, and the dynamic inductances are estimated with high-frequency voltage signal injection. The proposed iron loss resistance estimator estimates the equivalent iron resistance without any preliminary experiments. DC input power is measured using a current sensor for the accurate on-line estimation of iron loss resistance. To analyze the effectiveness of ML control compared with conventional maximum torque per ampere control, finite element analysis is used. The feasibility of the proposed ML control strategy is verified through simulation and experiments.","PeriodicalId":50081,"journal":{"name":"Journal of Power Electronics","volume":"140 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140583257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Three-stage model predictive control for modular multilevel converters with comprehensive performance optimization 模块化多电平转换器的三级模型预测控制与综合性能优化

IF 1.4 4区工程技术

Journal of Power Electronics Pub Date : 2024-04-03 DOI: 10.1007/s43236-024-00789-2

{"title":"Three-stage model predictive control for modular multilevel converters with comprehensive performance optimization","authors":"","doi":"10.1007/s43236-024-00789-2","DOIUrl":"https://doi.org/10.1007/s43236-024-00789-2","url":null,"abstract":"<h3>Abstract</h3> Model predictive control (MPC) is recognized as an efficient control method for the modular multilevel converter (MMC), owing to its advantages, such as good robustness, rapid dynamic response, and multi-objective control. However, due to the coupling relationship between the ac-side current and the circulating current, the existing MPC has an impact on the ac-side current while suppressing the circulating current. In this paper, the relationship between the ac-side current performance and circulating current suppression is discussed in detail, and a three-stage MPC (TS-MPC) strategy is proposed to optimize the comprehensive performance. With the ac-side current control, circulating current control, and comprehensive optimization control, the optimum performance of both the ac-side current and circulating current suppression is realized while maintaining a low computational burden. Moreover, a grouping sorting algorithm is designed to reduce the calculation burden and to balance the capacitor voltages. The steady-state and transient performances of the proposed TS-MPC strategy have been verified by experimental results, which validates its correctness and effectiveness.","PeriodicalId":50081,"journal":{"name":"Journal of Power Electronics","volume":"21 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140583439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0