Improved Dynamic Performance of Average-Value Modelled Active Front-End Rectifiers
Active front-end (AFE) rectifiers have become widely employed in power systems to achieve unity power factor and harmonic mitigations. The typical modeling approaches applied for AFE rectifiers in the literature mostly relied on two baselines: the detailed model and the time-average model. The forme...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/13/2/445 |
| _version_ | 1797344134855393280 |
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| author | Mohsen Ebadpour |
| author_facet | Mohsen Ebadpour |
| author_sort | Mohsen Ebadpour |
| collection | DOAJ |
| description | Active front-end (AFE) rectifiers have become widely employed in power systems to achieve unity power factor and harmonic mitigations. The typical modeling approaches applied for AFE rectifiers in the literature mostly relied on two baselines: the detailed model and the time-average model. The former approach deals with the switching element model (SEM), which leads to significant harmonics in currents with distorted waveforms. The latter approach uses the average-value model (AVM) to overcome the currents’ harmonics as well as provide fast responses. However, even the AVM baseline has shown problems during the starting stage (lack of control signals) and over the dead-time periods, which causes serious issues in the implementation process. This paper presents an improved dynamic AVM for AFE rectifiers by precisely considering the issues mentioned above, along with the practical starting procedure and desirable initialization. The studied AFE rectifier is developed using the voltage-oriented control (VOC) technique based on the different modeling methodologies, including SEM, Conventional AVM, and the proposed AVM. The performance of all models is analyzed and compared using simulation results with MATLAB/Simulink R2023a Function blocks for all the algorithm parts and SimScape elements for the electrical circuit model. The simulation results illustrate that the performance of the proposed AVM approach can closely resemble the behavior of the SEM baseline with low harmonic distortion. To evaluate the performance of the proposed model, several case studies are investigated to verify the AFE rectifier operation, regarding mostly the total harmonic distortion (THD) wherein the THD percentages are improved to 4.78 and 2.5 from 5.14 and 2.78 for low- and high-power loads, respectively. |
| first_indexed | 2024-03-08T10:57:56Z |
| format | Article |
| id | doaj.art-2a61f7ea3f4f4ccc827a8a3aee45598f |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-08T10:57:56Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-2a61f7ea3f4f4ccc827a8a3aee45598f2024-01-26T16:15:10ZengMDPI AGElectronics2079-92922024-01-0113244510.3390/electronics13020445Improved Dynamic Performance of Average-Value Modelled Active Front-End RectifiersMohsen Ebadpour0Department of Software E-Mobility Czech, Corporate Research & Development Plzeň, ZF Engineering Pilsen, 30100 Pilsen, Czech RepublicActive front-end (AFE) rectifiers have become widely employed in power systems to achieve unity power factor and harmonic mitigations. The typical modeling approaches applied for AFE rectifiers in the literature mostly relied on two baselines: the detailed model and the time-average model. The former approach deals with the switching element model (SEM), which leads to significant harmonics in currents with distorted waveforms. The latter approach uses the average-value model (AVM) to overcome the currents’ harmonics as well as provide fast responses. However, even the AVM baseline has shown problems during the starting stage (lack of control signals) and over the dead-time periods, which causes serious issues in the implementation process. This paper presents an improved dynamic AVM for AFE rectifiers by precisely considering the issues mentioned above, along with the practical starting procedure and desirable initialization. The studied AFE rectifier is developed using the voltage-oriented control (VOC) technique based on the different modeling methodologies, including SEM, Conventional AVM, and the proposed AVM. The performance of all models is analyzed and compared using simulation results with MATLAB/Simulink R2023a Function blocks for all the algorithm parts and SimScape elements for the electrical circuit model. The simulation results illustrate that the performance of the proposed AVM approach can closely resemble the behavior of the SEM baseline with low harmonic distortion. To evaluate the performance of the proposed model, several case studies are investigated to verify the AFE rectifier operation, regarding mostly the total harmonic distortion (THD) wherein the THD percentages are improved to 4.78 and 2.5 from 5.14 and 2.78 for low- and high-power loads, respectively.https://www.mdpi.com/2079-9292/13/2/445active front-end rectifieraverage-value modelswitching-element modeldead-time effectvoltage-oriented control |
| spellingShingle | Mohsen Ebadpour Improved Dynamic Performance of Average-Value Modelled Active Front-End Rectifiers Electronics active front-end rectifier average-value model switching-element model dead-time effect voltage-oriented control |
| title | Improved Dynamic Performance of Average-Value Modelled Active Front-End Rectifiers |
| title_full | Improved Dynamic Performance of Average-Value Modelled Active Front-End Rectifiers |
| title_fullStr | Improved Dynamic Performance of Average-Value Modelled Active Front-End Rectifiers |
| title_full_unstemmed | Improved Dynamic Performance of Average-Value Modelled Active Front-End Rectifiers |
| title_short | Improved Dynamic Performance of Average-Value Modelled Active Front-End Rectifiers |
| title_sort | improved dynamic performance of average value modelled active front end rectifiers |
| topic | active front-end rectifier average-value model switching-element model dead-time effect voltage-oriented control |
| url | https://www.mdpi.com/2079-9292/13/2/445 |
| work_keys_str_mv | AT mohsenebadpour improveddynamicperformanceofaveragevaluemodelledactivefrontendrectifiers |