Filter Extracted Sliding Mode Approach for DC Microgrids
The advantages offered by DC microgrids, such as elimination of skin effect losses, no requirement of frequency synchronization and high efficiency for power transmission are the major reasons that microgrids have attracted the attention of researchers in the last decade. Moreover, the DC friendly n...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-08-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/10/16/1882 |
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| author | Abdul Rehman Yasin Amina Yasin Mudassar Riaz Muhammad Ehab Ali Raza |
| author_facet | Abdul Rehman Yasin Amina Yasin Mudassar Riaz Muhammad Ehab Ali Raza |
| author_sort | Abdul Rehman Yasin |
| collection | DOAJ |
| description | The advantages offered by DC microgrids, such as elimination of skin effect losses, no requirement of frequency synchronization and high efficiency for power transmission are the major reasons that microgrids have attracted the attention of researchers in the last decade. Moreover, the DC friendly nature of renewable energy resources makes them a perfect choice for integration with DC microgrids, resulting in increased reliability and improved stability. However, in order to integrate renewable energy resources with the DC microgrids, challenges like equal load sharing and voltage regulation of the busbar under diverse varying load conditions are to be addressed. Conventionally, droop control with PI compensation is used to serve this purpose. However, this cascaded scheme results in poor regulation to large load variations and steady state errors. To address this issue, this paper presents a sliding mode control-based approach. Key features of SMC are its ease of implementation, robustness to load variations, and fast dynamic response. The system model is derived and simulated to analyze the stability and performance of the proposed controller. An experimental test bench is developed to demonstrate the effectiveness of SMC against modeled dynamics and is compared with the droop controller. The results show an improvement of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>26</mn><mo>%</mo></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>27.4</mn><mo>%</mo></mrow></semantics></math></inline-formula> in the rise time and settling time, respectively. Robustness of the proposed scheme is also tested by switching it with a step load and an improvement of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>40</mn><mo>%</mo></mrow></semantics></math></inline-formula> has been observed. |
| first_indexed | 2024-03-10T08:52:46Z |
| format | Article |
| id | doaj.art-8bcfa26c7bdc4ec4a8017949f84116a6 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T08:52:46Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-8bcfa26c7bdc4ec4a8017949f84116a62023-11-22T07:23:59ZengMDPI AGElectronics2079-92922021-08-011016188210.3390/electronics10161882Filter Extracted Sliding Mode Approach for DC MicrogridsAbdul Rehman Yasin0Amina Yasin1Mudassar Riaz2Muhammad Ehab3Ali Raza4Department of Electrical Engineering, The University of Lahore, Lahore 54000, PakistanDepartment of Basic Sciences, Preparatory Year Deanship, King Faisal University, Al Hofuf 31982, Saudi ArabiaDepartment of Electrical Engineering, The University of Lahore, Lahore 54000, PakistanDepartment of Electrical Engineering, The University of Lahore, Lahore 54000, PakistanDepartment of Electrical, Electronics and Telecommunication Engineering, University of Engineering and Technology, New Campus, Lahore 54000, PakistanThe advantages offered by DC microgrids, such as elimination of skin effect losses, no requirement of frequency synchronization and high efficiency for power transmission are the major reasons that microgrids have attracted the attention of researchers in the last decade. Moreover, the DC friendly nature of renewable energy resources makes them a perfect choice for integration with DC microgrids, resulting in increased reliability and improved stability. However, in order to integrate renewable energy resources with the DC microgrids, challenges like equal load sharing and voltage regulation of the busbar under diverse varying load conditions are to be addressed. Conventionally, droop control with PI compensation is used to serve this purpose. However, this cascaded scheme results in poor regulation to large load variations and steady state errors. To address this issue, this paper presents a sliding mode control-based approach. Key features of SMC are its ease of implementation, robustness to load variations, and fast dynamic response. The system model is derived and simulated to analyze the stability and performance of the proposed controller. An experimental test bench is developed to demonstrate the effectiveness of SMC against modeled dynamics and is compared with the droop controller. The results show an improvement of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>26</mn><mo>%</mo></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>27.4</mn><mo>%</mo></mrow></semantics></math></inline-formula> in the rise time and settling time, respectively. Robustness of the proposed scheme is also tested by switching it with a step load and an improvement of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>40</mn><mo>%</mo></mrow></semantics></math></inline-formula> has been observed.https://www.mdpi.com/2079-9292/10/16/1882droop controlsliding mode controlDC microgridload sharingvoltage regulation |
| spellingShingle | Abdul Rehman Yasin Amina Yasin Mudassar Riaz Muhammad Ehab Ali Raza Filter Extracted Sliding Mode Approach for DC Microgrids Electronics droop control sliding mode control DC microgrid load sharing voltage regulation |
| title | Filter Extracted Sliding Mode Approach for DC Microgrids |
| title_full | Filter Extracted Sliding Mode Approach for DC Microgrids |
| title_fullStr | Filter Extracted Sliding Mode Approach for DC Microgrids |
| title_full_unstemmed | Filter Extracted Sliding Mode Approach for DC Microgrids |
| title_short | Filter Extracted Sliding Mode Approach for DC Microgrids |
| title_sort | filter extracted sliding mode approach for dc microgrids |
| topic | droop control sliding mode control DC microgrid load sharing voltage regulation |
| url | https://www.mdpi.com/2079-9292/10/16/1882 |
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