Iet Electric Power Applications最新文献

A review of finite control set model predictive control for linear machines 线性机床有限控制集模型预测控制研究进展

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2024-11-08 DOI: 10.1049/elp2.12507

Wei Xu, Han Xiao, Yirong Tang, Jian Ge, Leilei Guo, Abdul Khalique Junejo

{"title":"A review of finite control set model predictive control for linear machines","authors":"Wei Xu, Han Xiao, Yirong Tang, Jian Ge, Leilei Guo, Abdul Khalique Junejo","doi":"10.1049/elp2.12507","DOIUrl":"https://doi.org/10.1049/elp2.12507","url":null,"abstract":"<p>Linear machines (LMs) have become excellent candidates for linear motion applications due to their abilities of generating thrust without any transmissions, and have been widely adopted in transportation, industries etc. Among the numerous control methods of LM drive systems, finite control set model predictive control (FCS-MPC) method has been given special attention due to its clear concept, fast response performance, and ability to handle constrained multivariate non-linear control problems. It is widely used to improve the performance and efficiency of overall LM drive systems. Firstly, based on the three elements of FCS-MPC, the advantages and shortcomings of the FCS-MPC method in applications are fully investigated. The research status in FCS-MPC has been summarised, such as multistep MPC, parameters robustness improvement, fast optimisation, and multi-vector MPC. Then, the key issues in FCS-MPC such as delay compensation, parameters design, and stability analysis are discussed, and their typical research methods and current research status are explained. Finally, the future development trends of FCS-MPC in LM drive systems are discussed.</p>","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"18 11","pages":"1567-1583"},"PeriodicalIF":1.5,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.12507","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142749066","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}

引用次数: 0

Study on two-stage optimal scheduling of DC distribution networks considering flexible load response 考虑柔性负荷响应的直流配电网两阶段优化调度研究

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2024-11-06 DOI: 10.1049/elp2.12515

Lei Chen, Man Yang, Yuqi Jiang, Shencong Zheng, Yifei Li, Xiaoyan You, Hongkun Chen

{"title":"Study on two-stage optimal scheduling of DC distribution networks considering flexible load response","authors":"Lei Chen, Man Yang, Yuqi Jiang, Shencong Zheng, Yifei Li, Xiaoyan You, Hongkun Chen","doi":"10.1049/elp2.12515","DOIUrl":"https://doi.org/10.1049/elp2.12515","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Due to the aim of developing sustainable energy systems, promoting the large-scale accommodation of distributed renewable energy sources (DRESs) and flexible loads in DC distribution networks (DCDNs) is significant. The uncertainty of DRESs and the insufficient use of flexible loads pose a considerable challenge to the economical and safe operation of DCDNs. To address the challenge, this paper puts forward a two-stage optimal scheduling model for the DCDNs considering flexible load response. The proposed model realises joint economic optimisation and reactive power optimisation, which is solved by the hybrid NSGAII-MOPSO algorithm and the CPLEX. The performance of the proposed model in the modified Institute of Electrical and Electronics Engineers 33-node system with the DCDNs is validated under different scenarios. The hybrid NSGAII-MOPSO performs better in obtaining the Pareto front than the NSGA-II and MOPSO individually. Compared to the traditional scheduling model, the proposed model can realise the power coordination of the flexible loads and energy storage systems to reduce the negative impact of uncertainty of DRESs while decreasing operating costs and carbon emissions by 3.94% and 36.4%. In addition, the proposed model can alleviate the network losses and ensure the node voltage for the DCDNs. Hence, the efficiency of the proposed model has been confirmed.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"18 11","pages":"1690-1701"},"PeriodicalIF":1.5,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.12515","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748892","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}

引用次数: 0

Multi-operating characteristic analysis and loss optimization of novel large capacity high-speed permanent magnet generator 新型大容量高速永磁发电机多工况特性分析及损耗优化

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2024-11-04 DOI: 10.1049/elp2.12512

Bitian Ye, Ying Xie, Wei Cai, Huiyong Jin, Yutian Sun, Jing Bai

{"title":"Multi-operating characteristic analysis and loss optimization of novel large capacity high-speed permanent magnet generator","authors":"Bitian Ye, Ying Xie, Wei Cai, Huiyong Jin, Yutian Sun, Jing Bai","doi":"10.1049/elp2.12512","DOIUrl":"https://doi.org/10.1049/elp2.12512","url":null,"abstract":"<p>Recently, the development trend of large capacity generator has gradually shifted from electrical excitation generator to permanent magnet generator (PMG). As a result, the large capacity high-speed permanent magnet generator (HSPMG) with high power density and high efficiency have received widespread attention. This paper aims to analyse the loss optimization of novel large capacity HSPMG under multi-operating conditions. In terms of the parameter requirements, a 2.5 MW and 7000 rpm HSPMG is designed. To verify the accuracy of simulation model and the rationality of generator design, the output characteristics of large capacity HSPMG which has been combined with prototype experimental data are calculated under both no-load and load conditions. Based on the load power characteristics of large capacity HSPMG, the optimization range of the magnetization angle under multi-operating conditions is explored. By analysing the no-load back electromotive force (EMF) and loss characteristics of large capacity HSPMG, the optimal magnetization angle that corresponds to the minimum loss under three conditions is obtained. The correctness of the analysis and optimization method is verified by comparing the loss distribution and electromagnetic results before and after the optimization. The research results provide a reference for the multi-operating characteristics analysis and loss optimization of large capacity HSPMG.</p>","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"18 11","pages":"1518-1529"},"PeriodicalIF":1.5,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.12512","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142749036","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}

引用次数: 0

Discrete-time full-order sensorless control of high-speed interior permanent magnet synchronous motor in electric vehicle traction system 电动汽车牵引系统中高速内置永磁同步电动机的离散全阶无传感器控制

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2024-10-27 DOI: 10.1049/elp2.12516

Dongcui Wang, Yuan Zhu, Sibei Wu, Lu Liu

{"title":"Discrete-time full-order sensorless control of high-speed interior permanent magnet synchronous motor in electric vehicle traction system","authors":"Dongcui Wang, Yuan Zhu, Sibei Wu, Lu Liu","doi":"10.1049/elp2.12516","DOIUrl":"https://doi.org/10.1049/elp2.12516","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>A discrete-time full-order sensorless control strategy for high-speed interior permanent magnet synchronous motor (IPMSM) used in electric vehicle (EV) traction system is designed in this paper. While most speed and position observer (SPO) methods are developed in the continuous-time domain, the presence of a unit-time-delay block existed in feedback loop and discretisation of the algorithm can lead to performance degradation during digital implementation. In this work, speed and angle are observed using the discrete-time four-order IPMSM model. A quadrature phase-locked loop model with compensation is introduced, and its stability condition is established for the first time. Furthermore, to address the potential for sudden speed changes in vehicle applications, the parameter range is further refined to keep the estimation error within a specified range. The sliding mode observer is discretised and its stability is analysed using discrete Lyapunov theory. Additionally, the time sequence of interactive signals between SPO and field-oriented control is thoroughly examined to ensure accurate time cycle. Finally, the proposed control strategy is validated and demonstrated through bench tests and real EV (LS6 of IM Motors) tests with a 190 kW IPMSM, which can improve the accuracy by 0.3 radians at 8000 rpm compared to traditional methods, and achieve stable control at 15,000 rpm on the test bench and at 120 kph with the EV.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"18 11","pages":"1540-1553"},"PeriodicalIF":1.5,"publicationDate":"2024-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.12516","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142749008","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}

引用次数: 0

Torque dynamic performance enhancement of five-phase permanent magnet synchronous motor with open-circuit fault 具有开路故障的五相永磁同步电动机转矩动态性能增强

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2024-10-12 DOI: 10.1049/elp2.12513

Zhengmeng Liu, Huawei Zhou, Zhenwu Zhou, Guohai Liu

{"title":"Torque dynamic performance enhancement of five-phase permanent magnet synchronous motor with open-circuit fault","authors":"Zhengmeng Liu, Huawei Zhou, Zhenwu Zhou, Guohai Liu","doi":"10.1049/elp2.12513","DOIUrl":"https://doi.org/10.1049/elp2.12513","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Multiphase permanent magnet synchronous motors (PMSMs) have attracted much more attention for their high efficiency, low torque ripple and good fault tolerance. However, open-circuit fault results in asymmetrical motor behaviour, and deteriorates torque performance, especially dynamic response. This paper proposes a novel fault-tolerant direct torque and flux control (DTFC) strategy to restrain fluctuating torque and enhance torque dynamic performance of a five-phase PMSM with open-circuit fault. The novelty of the proposed strategy is the development of DTFC based on stator flux orientation under the open-circuit fault condition and the third harmonic current suppression with carrier-based pulse width modulation technology. Consequently, the decoupling control of torque and stator flux can be achieved under the open-circuit fault condition, and the third harmonic current can be restrained without additional control. Combined with deadbeat control, the heavy computation burden can be reduced. Thus, the proposed strategy not only can enhance torque dynamic performance under open-circuit fault operation, but also keep smooth torque with circular stator flux trajectory before and after open-circuit fault. The effectiveness of the proposed strategy is verified by the simulation and experimental results.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"18 11","pages":"1530-1539"},"PeriodicalIF":1.5,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.12513","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748977","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}

引用次数: 0

Comparison of permanent magnet synchronous machine and permanent magnet flux-modulated machine in direct drive considering number of rotor poles 考虑转子极数的直接驱动永磁同步机与永磁磁通调制机的比较

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2024-10-11 DOI: 10.1049/elp2.12500

Saeed Abareshi, Jawad Faiz, Mehrage Ghods

{"title":"Comparison of permanent magnet synchronous machine and permanent magnet flux-modulated machine in direct drive considering number of rotor poles","authors":"Saeed Abareshi, Jawad Faiz, Mehrage Ghods","doi":"10.1049/elp2.12500","DOIUrl":"https://doi.org/10.1049/elp2.12500","url":null,"abstract":"<p>Direct drive permanent magnet (PM) motors have become a very attractive choice for electric vehicles. Generally, PM motors are divided into PM synchronous motors (PMSMs) and PM flux-modulated motors (PMFMMs). High torque density is the main requirement of direct drive motors, therefore, the structure of conventional PM motors is modified to boost the torque. Increasing the number of poles is a structural modification to achieve high torque density in PMSMs; however, a large number of poles affects motor characteristics such as power factor, flux weakening, losses, and efficiency. The other way to have high torque is to use PMFMMs, which have a high intrinsic torque density. This paper first compares the performance of PMSMs with different number of poles. Then the performance of PMFMMs and PMSMs are compared to show their differences. The performance of PMFMMs with different teeth modulators and magnetic gear ratios are predicted to show their effects upon its performance. The simulation results using finite elements method|finite element method (FEM) are presented, and finally, a PMFMM with 36 slots and 40 poles as case study is subjected to an experimental test and its results are compared with FEM.</p><p>The cover image is based on the article <i>Comparison of permanent magnet synchronous machine and permanent magnet flux-modulated machine in direct drive considering number of rotor poles</i> by Saeed Abareshi et al., https://doi.org/10.1049/elp2.12500.</p>","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"18 10","pages":"1095-1106"},"PeriodicalIF":1.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.12500","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707505","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}

引用次数: 0

A review on model predictive control strategies for AC motor drives 交流电机驱动模型预测控制策略研究进展

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2024-10-09 DOI: 10.1049/elp2.12510

Chen Li, Qinghui Meng, Tingna Shi

{"title":"A review on model predictive control strategies for AC motor drives","authors":"Chen Li, Qinghui Meng, Tingna Shi","doi":"10.1049/elp2.12510","DOIUrl":"https://doi.org/10.1049/elp2.12510","url":null,"abstract":"<p>In the past decade, model predictive control (MPC) has been widely used in AC motor drives. Although a series of improved MPC strategies have been proposed, researchers are still seeking more effective solutions for different application backgrounds and application requirements to achieve the goals such as algorithm simplification, weighting factor design, parameter robustness enhancement, current/torque ripple suppression, and so on. In this paper, aiming at the above problems, the MPC strategy and its optimisation technology for AC motor drive system are comprehensively reviewed. Firstly, this paper introduces the classical MPC technology with the permanent magnet synchronous motor drive system fed by two-level voltage source inverter as the control object. Secondly, this paper introduces and discusses the existing MPC optimisation methods from the aspects of current/torque ripple suppression, algorithm simplification, weight factor design and parameter robustness enhancement. Finally, based on the current industrial development requirements for AC motor drive systems and the research status of MPC optimisation methods in the existing literature, the current challenges and future trends of MPC technology are discussed.</p>","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"18 11","pages":"1584-1604"},"PeriodicalIF":1.5,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.12510","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748879","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}

引用次数: 0

Ultra-high-dimensional multi-level optimisation strategies for electrical machines 电机的超高维多级优化策略

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2024-10-08 DOI: 10.1049/elp2.12506

Chengcheng Liu, Shiwei Zhang, Hongming Zhang, Youhua Wang, Lin Liu

引用次数: 0

Modelling and optimization of TPMLMs with slotted stators based on Bayesian DNN 基于贝叶斯深度神经网络的开槽定子tpmlm建模与优化

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2024-10-08 DOI: 10.1049/elp2.12504

Tao Wu, Peipei Dai, Kai Zhu, Yachao Zhu

{"title":"Modelling and optimization of TPMLMs with slotted stators based on Bayesian DNN","authors":"Tao Wu, Peipei Dai, Kai Zhu, Yachao Zhu","doi":"10.1049/elp2.12504","DOIUrl":"https://doi.org/10.1049/elp2.12504","url":null,"abstract":"<p>The Permanent Magnet Linear Motor (TPMLM) is widely used in different industrial fields. TPMLMs with slots and iron cores have high power density, but their thrust fluctuations and copper losses are significant. Due to the nonlinearity and saturation of magnetic circuits, their electromagnetic models are complex and the accuracy of numerical methods is very inferior. Substantially accurate modelling is crucial for motor optimisation design. In this paper, a data-driven modelling method based on Bayesian optimisation deep neural network (DNN) is proposed to improve the accuracy of the electromagnetic field. The finite element (FE) modelling under different structural parameters is analysed and provides a training dataset for DNN. Then, a multi-objective optimisation problem for the slotted TPMLM is carried out based on the multi-objective black hole algorithm. Compared to the original design, the average thrust of TPMLM increased by 49.37%, the thrust fluctuation percentage decreased by 9.59%, and the coil copper consumption percentage decreased by 2.64%. The results show that the improved DNN model has very high modelling accuracy, providing a new way for motor design and optimisation.</p>","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"18 11","pages":"1679-1689"},"PeriodicalIF":1.5,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.12504","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748974","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}

引用次数: 0

Active cogging torque construction by the weld slot design in a positioning servo system 主动开槽扭矩结构由焊缝槽设计在定位伺服系统中实现

IF 1.5 4区工程技术

Iet Electric Power Applications Pub Date : 2024-09-27 DOI: 10.1049/elp2.12503

Minghao Tong, Yuhang Ding, Le Sun

{"title":"Active cogging torque construction by the weld slot design in a positioning servo system","authors":"Minghao Tong, Yuhang Ding, Le Sun","doi":"10.1049/elp2.12503","DOIUrl":"https://doi.org/10.1049/elp2.12503","url":null,"abstract":"<p>The cogging torque is usually considered as an adverse effect of the PM machine servo system. This paper presents a new perspective that the cogging torque can be exploited in many practical situations as long as the speed ripple can be suppressed. By the proposed cogging torque design scheme, the local core saturation on the stator yoke can be constructed by specially designing the yoke structure. With this idea, the cogging torque distribution can be designed, with the transmission ratio, generating a series of designated auxiliary positioning forces on the load side. This weak positioning force will be amplified by the reduction gears and make the terminal servo load prone to stop at the designated stable equilibrium positions. This feature can help humans conveniently move the load to some designated positions by manual mode with a certain precision. Considering the negative impact of this constructed cogging effect, a speed ripple suppression method is applied to guarantee that the cogging torque machine can provide a good servo performance. The designated cogging torque and performances are verified by prototype machines, testing, and motion control experiments.</p>","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"18 11","pages":"1491-1506"},"PeriodicalIF":1.5,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.12503","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142749051","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}

引用次数: 0