Iet Science Measurement & Technology最新文献

IF 1.3 4区工程技术

Iet Science Measurement & Technology Pub Date : 2026-04-16

引用次数: 0

Hybrid Topology Optimisation of Permanent Magnet Motors Using Boolean Geometry Projection and Gaussian-Based ON-OFF Method 基于布尔几何投影和高斯开关法的永磁电机混合拓扑优化

IF 1.3 4区工程技术

Iet Science Measurement & Technology Pub Date : 2026-04-07 DOI: 10.1049/smt2.70067

Yoshitsugu Otomo, Takashi Abe, Hajime Igarashi

{"title":"Hybrid Topology Optimisation of Permanent Magnet Motors Using Boolean Geometry Projection and Gaussian-Based ON-OFF Method","authors":"Yoshitsugu Otomo, Takashi Abe, Hajime Igarashi","doi":"10.1049/smt2.70067","DOIUrl":"https://doi.org/10.1049/smt2.70067","url":null,"abstract":"This paper proposes a topology optimisation method for permanent magnet motors that hybridises the Boolean geometry projection (BGP) method and the ON-OFF method based on Gaussian basis functions. This method represents the topology of a permanent magnet based on the BGP method in addition to generating that of a magnetic core, including flux barriers, using the Gaussian basis functions to obtain a novel but manufacturable machine structure. In contrast to existing optimisation methods such as parameter optimisation, the pre-setting of the search region for geometric parameters is not required. This leads to the design of machine structures that is completely independent of the designer's experience and knowledge. Optimisation results demonstrate that the proposed method generates diverse and realistic rotor structures, such as U-, V- and double V-shaped configurations, and achieves higher average torque performance compared with existing parametric and hybrid optimisation methods. The findings confirm that the proposed BGP-based hybrid framework provides a practical and effective design methodology for PM motors, and it can be further extended to a full motor design that simultaneously considers both mechanical and electromagnetic properties in future work.","PeriodicalId":54999,"journal":{"name":"Iet Science Measurement & Technology","volume":"20 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/smt2.70067","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147683188","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

IF 1.3 4区工程技术

Iet Science Measurement & Technology Pub Date : 2026-03-27

引用次数: 0

Front Cover: Delayed Signal Cancellation-Based Approach for Single-Phase P-Class PMU Algorithm 基于延迟信号消除的单相p类PMU算法

IF 1.3 4区工程技术

Iet Science Measurement & Technology Pub Date : 2026-03-27 DOI: 10.1049/smt2.70064

Md. Rafidul Islam, Md. Shamim Reza, Md. Maruf Hossain

引用次数: 0

IF 1.3 4区工程技术

Iet Science Measurement & Technology Pub Date : 2026-03-20

引用次数: 0

Modelling of Submarine Power Cable Anchor Damage Disturbance Law and Optical Fiber Vibration Sensing Method Research 海底电力电缆锚杆损伤扰动规律建模及光纤振动传感方法研究

IF 1.3 4区工程技术

Iet Science Measurement & Technology Pub Date : 2026-03-20 DOI: 10.1049/smt2.70062

Zhou Zixuan, Lv Anqiang, Huang Youcong, Li Zhong, Li Jing

{"title":"Modelling of Submarine Power Cable Anchor Damage Disturbance Law and Optical Fiber Vibration Sensing Method Research","authors":"Zhou Zixuan, Lv Anqiang, Huang Youcong, Li Zhong, Li Jing","doi":"10.1049/smt2.70062","DOIUrl":"https://doi.org/10.1049/smt2.70062","url":null,"abstract":"Submarine power cables are important equipment for power supply to coastal islands and offshore wind farms. Anchor damage accounts for 80% of submarine power cable damage accidents. In order to study the disturbance law of anchor on submarine power cables, a method for sensing the time-frequency characteristics of optical fibre vibration based on finite elements was proposed. In this paper, a large deformation finite element model of the process of the hall anchor disturbing the submarine power cable was developed. The acceleration vibration signal of the optical fibre inside the submarine power cable was extracted. An energy analysis method was used to reveal the disturbance laws of anchor weight, bottoming speed and anchor damage distance on submarine power cable. The relationship equations between the optical fibre vibration energy and them were established. A small-scale model experiment platform was built. A total of 112 tests were conducted under 14 working conditions. The absolute errors between the experiment results and the finite element results were no more than 0.1. The correctness of the equation was verified. This method can quickly determine the anchor drop information, obtain the anchor damage data and provide a reference for the online monitoring of submarine power cables.","PeriodicalId":54999,"journal":{"name":"Iet Science Measurement & Technology","volume":"20 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/smt2.70062","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147567351","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

Delayed Signal Cancellation-Based Approach for Single-Phase P-Class PMU Algorithm 基于延迟信号消除的单相p类PMU算法

IF 1.3 4区工程技术

Iet Science Measurement & Technology Pub Date : 2026-03-19 DOI: 10.1049/smt2.70061

Md. Rafidul Islam, Md. Shamim Reza, Md. Maruf Hossain

{"title":"Delayed Signal Cancellation-Based Approach for Single-Phase P-Class PMU Algorithm","authors":"Md. Rafidul Islam, Md. Shamim Reza, Md. Maruf Hossain","doi":"10.1049/smt2.70061","DOIUrl":"https://doi.org/10.1049/smt2.70061","url":null,"abstract":"A robust, unconditionally stable, and accurate single-phase P-class phasor measurement unit (PMU) algorithm is proposed in this paper. It relies on fixed-tuned cascaded delayed signal cancellation (CDSC) operators. The designed CDSC operators can suppress the harmonics as demanded by the IEC/IEEE 60255-118-1:2018 standard. To tackle the fundamental frequency variation, two similar CDSC blocks are cascaded via fixed-tuned Park transformation. This algorithm avoids the use of integrators, matrix inversion, feedback paths and computationally demanding trigonometric functions or their inverse operations in its structure. It can be used for PMU data rates up to 100 frames per second (fps) for 50 Hz power systems. Among all types of standard tests, the maximum total vector error, frequency error, and rate of change of frequency error are obtained as 0.0774%, 1.6731 mHz, and 0.0415 Hz/s, respectively. This algorithm also meets the requirements of the input step test with a broad safety margin. Moreover, it can provide results within the allowable error limits for a signal-to-noise ratio greater than about 55 dB in the signal frequency test.","PeriodicalId":54999,"journal":{"name":"Iet Science Measurement & Technology","volume":"20 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/smt2.70061","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147567137","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

IF 1.3 4区工程技术

Iet Science Measurement & Technology Pub Date : 2026-03-19

引用次数: 0

Denoising Method for Partial Discharge Signals Based on SVMD_STNLM_GSTVD 基于SVMD_STNLM_GSTVD的局部放电信号去噪方法

IF 1.3 4区工程技术

Iet Science Measurement & Technology Pub Date : 2026-03-18 DOI: 10.1049/smt2.70060

Yinzhang Cheng, Xueting Bai, Zhenyu Lu, Zehua Yin, Xiang Jing, Wei Wang, Lijun Zheng, Zhipeng Lei

{"title":"Denoising Method for Partial Discharge Signals Based on SVMD_STNLM_GSTVD","authors":"Yinzhang Cheng, Xueting Bai, Zhenyu Lu, Zehua Yin, Xiang Jing, Wei Wang, Lijun Zheng, Zhipeng Lei","doi":"10.1049/smt2.70060","DOIUrl":"https://doi.org/10.1049/smt2.70060","url":null,"abstract":"Currently, partial discharge (PD) signal denoising algorithms face issues such as complex parameter selection, incomplete noise suppression, and low operational efficiency. A hybrid denoising method (SVMD_STNLM_GSTVD) is proposed to address these issues, specifically integrating Sequential Variational Mode Decomposition (SVMD), Structure Tensor-based Non-Local Means (STNLM), and Group Sparse Total Variation Denoising (GSTVD). First, SVMD is used to adaptively decompose the original noisy PD signal, and then the correlation coefficient criterion is used to distinguish the modal components into high-quality components dominated by effective signals and low-quality components dominated by noise, achieving preliminary separation of signal and noise. For high-quality components, in order to preserve signal structural features and effectively suppress noise, STNLM is introduced, and the chaotic sparrow search algorithm (CSSA) is used to intelligently optimise its key parameters. For low-quality components, the GSTVD method is adopted, which introduces group sparse regularisation terms and total variational constraints to remove noise and avoid excessive smoothing of signal edge features. Finally, the SVMD_STNLM_GSTVD denoised signal is subjected to secondary filtering using a soft threshold function to further eliminate residual noise and improve the overall denoising effect. The simulation and actual measurement results show that the proposed method outperforms the compared methods in terms of signal-to-noise ratio, waveform similarity, root mean square error, and running time. It can effectively extract PD features and provide a reliable basis for subsequent fault diagnosis.","PeriodicalId":54999,"journal":{"name":"Iet Science Measurement & Technology","volume":"20 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/smt2.70060","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147566779","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

IF 1.3 4区工程技术

Iet Science Measurement & Technology Pub Date : 2026-03-18

引用次数: 0