CES Transactions on Electrical Machines and Systems最新文献_第9页

Analysis and Reduction of Cogging Torque of Permanent Magnet Synchronous Wind Generators Based on the Magnetic Field Modulation Mechanism 基于磁场调制机理的永磁同步风力发电机齿槽转矩分析与减小

CES Transactions on Electrical Machines and Systems Pub Date : 2024-11-27 DOI: 10.30941/CESTEMS.2024.00040

Zexing Li;Chao Liu;Yiwen Fan;Zixuan Zhang;Jiakuan Xia

{"title":"Analysis and Reduction of Cogging Torque of Permanent Magnet Synchronous Wind Generators Based on the Magnetic Field Modulation Mechanism","authors":"Zexing Li;Chao Liu;Yiwen Fan;Zixuan Zhang;Jiakuan Xia","doi":"10.30941/CESTEMS.2024.00040","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.00040","url":null,"abstract":"In this paper, a magnetic field modulation model considering the influence of phase angles is established for the analysis and weakening of the cogging torque of the permanent magnet synchronous wind generations. Compared with the existing analytical model, the modulation effect of the magnetic field harmonics and phase angle on the cogging torque components is analyzed in the new model. Firstly, flux density model with phase angle characteristics is derived, and the relationship of the cogging torque and magnetic field harmonic is analyzed using energy method. Then, based on the magnetic modulation mechanism, the impact of the phase angle and magnetic field harmonics on the coupling relationship among cogging torque components is analyzed. All cogging torque components are classified as a combination of multiple positive and negative harmonic components, and the contribution characteristics of the components are determined by the harmonic combination and phase angle characteristics. Based on the finite element model (FEM), the magnetic field modulation model of the cogging torque is proved. On the basis of the conclusions obtained, it is further explained that the suppression mechanism of rotor-step skewing is a mutual complementary effect of the positive components and negative cogging components, and the main harmonic is effectively offset by selecting the seasonable of segment number and skewed angle of rotor. Finally, in order to verify the validity of the analysis method, the no-load line back EMF and cogging torque of optimized prototype is tested, and the experimental results agree well with the FEM results.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 4","pages":"463-470"},"PeriodicalIF":0.0,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10770096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905919","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}

引用次数: 0

Coordinated Control of Second-Order Harmonic Voltage and Current Fluctuations in Cascaded H-Bridge Inverter with Supercapacitor and DC-DC Stage at Variable Output Frequencies 变输出频率下超级电容DC-DC级联h桥逆变器二阶谐波电压和电流波动的协调控制

CES Transactions on Electrical Machines and Systems Pub Date : 2024-11-27 DOI: 10.30941/CESTEMS.2024.00038

Ye Zhang;Zixin Li;Fanqiang Gao;Jinhao Zhang;Cong Zhao;Yaohua Li

{"title":"Coordinated Control of Second-Order Harmonic Voltage and Current Fluctuations in Cascaded H-Bridge Inverter with Supercapacitor and DC-DC Stage at Variable Output Frequencies","authors":"Ye Zhang;Zixin Li;Fanqiang Gao;Jinhao Zhang;Cong Zhao;Yaohua Li","doi":"10.30941/CESTEMS.2024.00038","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.00038","url":null,"abstract":"In the cascaded H-bridge inverter (CHBI) with supercapacitor and dc-dc stage, inherent second-order harmonic power flows through each submodule (SM), causing fluctuations in both the dc-link voltage and the dc-dc current. There exist limitations in handling these fluctuations at variable output frequencies when employing proportional-integral (PI) control to the dc-dc stage. This paper aims to coordinately control these second-order harmonic voltage and current fluctuations in the CHBI. The presented method configures a specific second-order harmonic voltage reference, equipped with a maximum voltage fluctuation constraint and a suitable phase, for the dc-dc stage. A PI-resonant controller is used to track the configured reference. This allows for regulating the second-order harmonic fluctuation in the average dc-link voltage among the SMs within a certain value. Importantly, the second-order harmonic fluctuation in the dc-dc current can also be reduced. Simulation and experimental results demonstrate the effectiveness of the presented method.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 4","pages":"481-492"},"PeriodicalIF":0.0,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10770095","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905763","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}

引用次数: 0

A Novel Discrete Branch Bidirectional Solid-State Circuit Breaker Based on Mixture Device 一种新型的基于混合装置的离散支路双向固态断路器

CES Transactions on Electrical Machines and Systems Pub Date : 2024-11-27 DOI: 10.30941/CESTEMS.2024.00042

Qingpeng Zeng;Jin Zhu;Songming He;Daoqi Wang;Tongzhen Wei

{"title":"A Novel Discrete Branch Bidirectional Solid-State Circuit Breaker Based on Mixture Device","authors":"Qingpeng Zeng;Jin Zhu;Songming He;Daoqi Wang;Tongzhen Wei","doi":"10.30941/CESTEMS.2024.00042","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.00042","url":null,"abstract":"Solid state circuit breakers (SSCBs) based on full-controlled devices such as IGBT and based on half-controlled devices such as thyristor have their respective advantages. The mixture device solid state circuit breaker (M-SSCB) combines the advantages together and can achieve lower loss, high efficiency, active and reliable blocking at the same time. However, the conduction loss will increase significantly when the topology expanding to a bidirectional topology because the bidirectional line commutation switch (LCS) structure composed of two groups of IGBTs in reverse series. In this paper, a novel discrete branch mixture SSCB (DBM-SSCB) is proposed, bidirectional current only flows through one IGBT that has the obvious conduction losses advantage at the same voltage and current level. Only one energy-absorbing component is shared by two discrete branches can guarantee optimal costs and volume. By calculation, the proposed DBM-SSCB can reduce the conduction loss about 30.4% in 10 kV MVDC system, while retaining other advantages of the mixture device SSCB, such as without introducing additional thyristors, charging power supply and the ability to actively interrupt bidirectional fault currents. The blocking principles and designing guidelines are presented in detail, the feasibility is verified by 500 V-18 A simulation results and scale-down experiment, the engineering calculation and simulation of 10 kV-1 kA prototype is completed and compared with other DCCBs. Experimental results and comparative analysis show that the proposed DBM-SSCB has both lower losses and significant performance advantages thus has a good engineering application prospect.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 4","pages":"493-503"},"PeriodicalIF":0.0,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10770091","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905762","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}

引用次数: 0

Nonlinearity Estimation and Compensation for Accurate PMSM Modeling and Voltage Prediction 永磁同步电机精确建模与电压预测的非线性估计与补偿

CES Transactions on Electrical Machines and Systems Pub Date : 2024-10-03 DOI: 10.30941/CESTEMS.2024.00034

Beichen Ding;Yuting Lu;Chunyan Lai;Weiwen Peng;Kaide Huang;Guodong Feng

{"title":"Nonlinearity Estimation and Compensation for Accurate PMSM Modeling and Voltage Prediction","authors":"Beichen Ding;Yuting Lu;Chunyan Lai;Weiwen Peng;Kaide Huang;Guodong Feng","doi":"10.30941/CESTEMS.2024.00034","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.00034","url":null,"abstract":"For permanent magnet synchronous machine (PMSM), the machine model is critical to predict the operating states for motor control, which, however, can be greatly affected by system nonlinearities. Hence, this paper investigates accurate machine modeling for control and parameter estimation. In the proposed approach, the PMSM model with saturated inductances is used as the base model, and this paper investigates modeling and compensation of the offsets to the base model due to system nonlinearities such as saturation and core loss effects for accurate machine modeling and voltage prediction. Specifically, the offsets to the base model are modeled using nonlinear functions with variable coefficients to compensate saturation and core loss effect, which can achieve better accuracy without changing the model structure. A differential estimation model is derived to estimate the model coefficients from a small amount of measurements with simplified procedure. Moreover, the model offset calculation is both computation and memory efficient with simplified implementation. The contribution is to improve the machine model accuracy and achieve precise voltage prediction for practical applications. Experiments, comparisons and the application to temperature estimation are conducted on a test interior PMSM to validate the proposed approach.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 4","pages":"394-403"},"PeriodicalIF":0.0,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10705034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905702","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}

引用次数: 0

A VSFPWM Strategy for High Frequency Torque Ripple Control of PMSM Based on Stator Flux Ripple Prediction 基于定子磁链脉动预测的永磁同步电机高频转矩脉动控制策略

CES Transactions on Electrical Machines and Systems Pub Date : 2024-10-03 DOI: 10.30941/CESTEMS.2024.00035

Jinyang Han;Hepeng Su;Weichao Li;Hao Yuan

{"title":"A VSFPWM Strategy for High Frequency Torque Ripple Control of PMSM Based on Stator Flux Ripple Prediction","authors":"Jinyang Han;Hepeng Su;Weichao Li;Hao Yuan","doi":"10.30941/CESTEMS.2024.00035","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.00035","url":null,"abstract":"Vector-controlled AC motor drives utilize pulse width modulation (PWM) to synthesize the desired output voltage of the voltage source inverter (VSI). In space vector PWM (SVPWM) techniques, the average realization of the space vector applying the volt-sec balance principle results in an instantaneous error voltage that generates high frequency torque ripple. It may lead to an increase in motor vibration and acoustic noise. This article presents a high frequency torque ripple prediction model based on stator flux ripple and proposes a targeted designed variable switching frequency PWM (VSFPWM) strategy to diminish high frequency torque ripple. The switching frequency is dynamically adjusted according to the peak value of the predicted stator flux ripple to mitigate high frequency torque ripple. In contrast to existing strategies, the strategy outlined in this article directly suppresses high frequency torque ripple, thus remaining unaffected by inaccurate motor parameters. Additionally, due to the introduction of the power factor angle, the proposed strategy can better adapt to the full speed range operating conditions of the motor. Detailed simulations and experiments are provided to validate the effectiveness of the proposed strategy.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 4","pages":"414-425"},"PeriodicalIF":0.0,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10705031","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905703","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}

引用次数: 0

Online Field Current Estimation for Brushless Synchronous Starter/Generator Considering the Rectifier Commutation Mode 考虑整流换相方式的无刷同步起动/发电机励磁电流在线估计

CES Transactions on Electrical Machines and Systems Pub Date : 2024-10-03 DOI: 10.30941/CESTEMS.2024.00036

Ji Pang;Feihang Zhou;Jianwei Yang;Weiyi Zhang;Youming Wang;Weiguo Liu;Ningfei Jiao

引用次数: 0

Review of Field Weakening Control Strategies of Permanent Magnet Synchronous Motors 永磁同步电机磁场削弱控制策略综述

CES Transactions on Electrical Machines and Systems Pub Date : 2024-09-01 DOI: 10.30941/CESTEMS.2024.00043

Runze Jing;Gaolin Wang;Guoqiang Zhang;Dianguo Xu

引用次数: 0

Review of Thermal Design of SiC Power Module for Motor Drive in Electrical Vehicle Application 电动汽车应用中用于电机驱动的碳化硅功率模块热设计回顾

CES Transactions on Electrical Machines and Systems Pub Date : 2024-09-01 DOI: 10.30941/CESTEMS.2024.00041

Puqi Ning;Xiaoshuang Hui;Dongrun Li;Yuhui Kang;Jiajun Yang;Chaohui Liu

{"title":"Review of Thermal Design of SiC Power Module for Motor Drive in Electrical Vehicle Application","authors":"Puqi Ning;Xiaoshuang Hui;Dongrun Li;Yuhui Kang;Jiajun Yang;Chaohui Liu","doi":"10.30941/CESTEMS.2024.00041","DOIUrl":"https://doi.org/10.30941/CESTEMS.2024.00041","url":null,"abstract":"In the current vehicle electric propulsion systems, the thermal design of power modules heavily relies on empirical knowledge, making it challenging to effectively optimize irregularly arranged Pinfin structures, thereby limiting their performance. This paper aims to review the underlying mechanisms of how irregularly arranged Pinfins influence the thermal characteristics of power modules and introduce collaborative thermal design with DC bus capacitor and motor. Literature considers chip size, placement, coolant flow direction with the goal of reducing thermal resistance of power modules, minimizing chip junction temperature differentials, and optimizing Pinfin layouts. In the first step, algorithms should efficiently generating numerous unique irregular Pinfin layouts to enhance optimization quality. The second step is to efficiently evaluate Pinfin layouts. Simulation accuracy and speed should be ensured to improve computational efficiency. Finally, to improve overall heat dissipation effectiveness, papers establish models for capacitors, motors, to aid collaborative Pinfin optimization. These research outcomes will provide essential support for future developments in high power density motor drive for vehicles.","PeriodicalId":100229,"journal":{"name":"CES Transactions on Electrical Machines and Systems","volume":"8 3","pages":"332-346"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10702522","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142368475","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}

引用次数: 0

Model-Free Speed Control of Single-Phase Flux Switching Motor with an Asymmetrical Rotor 带不对称转子的单相磁通开关电机的无模型速度控制

CES Transactions on Electrical Machines and Systems Pub Date : 2024-09-01 DOI: 10.30941/CESTEMS.2024.00039

Zongsheng Zhang;Congcong Guo

引用次数: 0

Message from Editors 编辑致辞

CES Transactions on Electrical Machines and Systems Pub Date : 2024-09-01 DOI: 10.30941/CESTEMS.2024.10052

引用次数: 0