A Piecewise Linearization Based Method for Crossed Frequency Admittance Matrix Model Calculation of Harmonic Sources
The integration of large-scale power electronic equipment has intensified harmonic issues in power systems. Accurate harmonic models are fundamental for evaluating and mitigating harmonic problems, but existing models still exhibit deficiencies in harmonic mechanism, model complexity and accuracy. T...
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MDPI AG
2025-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/25/2/582 |
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| author | Youhang Yang Shaorong Wang Mingming Shi Xian Zheng |
| author_facet | Youhang Yang Shaorong Wang Mingming Shi Xian Zheng |
| author_sort | Youhang Yang |
| collection | DOAJ |
| description | The integration of large-scale power electronic equipment has intensified harmonic issues in power systems. Accurate harmonic models are fundamental for evaluating and mitigating harmonic problems, but existing models still exhibit deficiencies in harmonic mechanism, model complexity and accuracy. This work proposes a calculation method of crossed frequency admittance matrix (CFAM) analytical model based on piecewise linearization, aiming to achieve accurate modeling of phase-controlled power electronic harmonic sources. Firstly, the traditional CFAM model construction methods are introduced, and the shortcomings in harmonic modeling are discussed. Subsequently, the parameter-solving process of the CFAM analytical model based on piecewise linearization is proposed. This method improves the accuracy of harmonic modeling and simplifies the construction process of the analytical model. Furthermore, taking single-phase and three-phase bridge rectifiers as examples, CFAM analytical models under intermittent and continuous load current conditions are established, respectively, and the unified harmonic models for both conditions are summarized. Finally, case studies of rectifier harmonic sources under varying circuit control parameters and supply voltage distortions are conducted through Matlab/Simulink and experiments. The results demonstrate that the proposed method provides higher accuracy and more stable performance for harmonic current estimation compared with the traditional CFAM model and constant current source model. |
| format | Article |
| id | doaj-art-113318f5777b45f1956328fe485bc5de |
| institution | Kabale University |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-113318f5777b45f1956328fe485bc5de2025-01-24T13:49:26ZengMDPI AGSensors1424-82202025-01-0125258210.3390/s25020582A Piecewise Linearization Based Method for Crossed Frequency Admittance Matrix Model Calculation of Harmonic SourcesYouhang Yang0Shaorong Wang1Mingming Shi2Xian Zheng3School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaSchool of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaElectric Power Research Institute of State Grid Jiangsu Electric Power Company, Nanjing 211103, ChinaElectric Power Research Institute of State Grid Jiangsu Electric Power Company, Nanjing 211103, ChinaThe integration of large-scale power electronic equipment has intensified harmonic issues in power systems. Accurate harmonic models are fundamental for evaluating and mitigating harmonic problems, but existing models still exhibit deficiencies in harmonic mechanism, model complexity and accuracy. This work proposes a calculation method of crossed frequency admittance matrix (CFAM) analytical model based on piecewise linearization, aiming to achieve accurate modeling of phase-controlled power electronic harmonic sources. Firstly, the traditional CFAM model construction methods are introduced, and the shortcomings in harmonic modeling are discussed. Subsequently, the parameter-solving process of the CFAM analytical model based on piecewise linearization is proposed. This method improves the accuracy of harmonic modeling and simplifies the construction process of the analytical model. Furthermore, taking single-phase and three-phase bridge rectifiers as examples, CFAM analytical models under intermittent and continuous load current conditions are established, respectively, and the unified harmonic models for both conditions are summarized. Finally, case studies of rectifier harmonic sources under varying circuit control parameters and supply voltage distortions are conducted through Matlab/Simulink and experiments. The results demonstrate that the proposed method provides higher accuracy and more stable performance for harmonic current estimation compared with the traditional CFAM model and constant current source model.https://www.mdpi.com/1424-8220/25/2/582power qualityharmonic source modelphase-controlled power electronic equipmentpiecewise linearizationcrossed frequency admittance matrixanalytical model |
| spellingShingle | Youhang Yang Shaorong Wang Mingming Shi Xian Zheng A Piecewise Linearization Based Method for Crossed Frequency Admittance Matrix Model Calculation of Harmonic Sources Sensors power quality harmonic source model phase-controlled power electronic equipment piecewise linearization crossed frequency admittance matrix analytical model |
| title | A Piecewise Linearization Based Method for Crossed Frequency Admittance Matrix Model Calculation of Harmonic Sources |
| title_full | A Piecewise Linearization Based Method for Crossed Frequency Admittance Matrix Model Calculation of Harmonic Sources |
| title_fullStr | A Piecewise Linearization Based Method for Crossed Frequency Admittance Matrix Model Calculation of Harmonic Sources |
| title_full_unstemmed | A Piecewise Linearization Based Method for Crossed Frequency Admittance Matrix Model Calculation of Harmonic Sources |
| title_short | A Piecewise Linearization Based Method for Crossed Frequency Admittance Matrix Model Calculation of Harmonic Sources |
| title_sort | piecewise linearization based method for crossed frequency admittance matrix model calculation of harmonic sources |
| topic | power quality harmonic source model phase-controlled power electronic equipment piecewise linearization crossed frequency admittance matrix analytical model |
| url | https://www.mdpi.com/1424-8220/25/2/582 |
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