Higher Order Sliding Mode Observer-Based Sensor Fault Detection in DC Microgrid’s Buck Converter
Fault detection in a Direct Current (DC) microgrid with multiple interconnections of distributed generation units (DGUs) is an interesting topic of research. The occurrence of any sensor fault in the DC microgrid should be detected immediately by the fault detection network to achieve an overall sta...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-03-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/14/6/1586 |
| _version_ | 1797541552265887744 |
|---|---|
| author | Daijiry Narzary Kalyana C. Veluvolu |
| author_facet | Daijiry Narzary Kalyana C. Veluvolu |
| author_sort | Daijiry Narzary |
| collection | DOAJ |
| description | Fault detection in a Direct Current (DC) microgrid with multiple interconnections of distributed generation units (DGUs) is an interesting topic of research. The occurrence of any sensor fault in the DC microgrid should be detected immediately by the fault detection network to achieve an overall stable performance of the system. This work focuses on sensor fault diagnosis of voltage and current sensors in interconnected DGUs of the microgrid. Two separate higher order sliding mode observers (HOSM) based on model dynamics are designed to estimate the voltage and current and generate the residuals for detecting the faulty sensors in DGUs. Multiplicative single and multiple sensor faults are considered in voltage and current sensors. By appropriate selection of threshold, single and multiple sensor fault detection strategies are formulated. A hierarchical controller is designed to ensure equal sharing of current among the DGUs of the DC microgrid and stabilize the system. Simulations are performed to validate the proposed approach for various configurations of the DC microgrid under various load and off noise conditions. |
| first_indexed | 2024-03-10T13:17:34Z |
| format | Article |
| id | doaj.art-9984c73ce97c44cbb08b85bc7581465e |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T13:17:34Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-9984c73ce97c44cbb08b85bc7581465e2023-11-21T10:18:51ZengMDPI AGEnergies1996-10732021-03-01146158610.3390/en14061586Higher Order Sliding Mode Observer-Based Sensor Fault Detection in DC Microgrid’s Buck ConverterDaijiry Narzary0Kalyana C. Veluvolu1School of Electronics Engineering, Kyungpook National University, Daegu 41566, KoreaSchool of Electronics Engineering, Kyungpook National University, Daegu 41566, KoreaFault detection in a Direct Current (DC) microgrid with multiple interconnections of distributed generation units (DGUs) is an interesting topic of research. The occurrence of any sensor fault in the DC microgrid should be detected immediately by the fault detection network to achieve an overall stable performance of the system. This work focuses on sensor fault diagnosis of voltage and current sensors in interconnected DGUs of the microgrid. Two separate higher order sliding mode observers (HOSM) based on model dynamics are designed to estimate the voltage and current and generate the residuals for detecting the faulty sensors in DGUs. Multiplicative single and multiple sensor faults are considered in voltage and current sensors. By appropriate selection of threshold, single and multiple sensor fault detection strategies are formulated. A hierarchical controller is designed to ensure equal sharing of current among the DGUs of the DC microgrid and stabilize the system. Simulations are performed to validate the proposed approach for various configurations of the DC microgrid under various load and off noise conditions.https://www.mdpi.com/1996-1073/14/6/1586DC microgriddistribution generation unitsfault detectionhigher order sliding mode observerLyapunov’s stabilitymulti sensor faults |
| spellingShingle | Daijiry Narzary Kalyana C. Veluvolu Higher Order Sliding Mode Observer-Based Sensor Fault Detection in DC Microgrid’s Buck Converter Energies DC microgrid distribution generation units fault detection higher order sliding mode observer Lyapunov’s stability multi sensor faults |
| title | Higher Order Sliding Mode Observer-Based Sensor Fault Detection in DC Microgrid’s Buck Converter |
| title_full | Higher Order Sliding Mode Observer-Based Sensor Fault Detection in DC Microgrid’s Buck Converter |
| title_fullStr | Higher Order Sliding Mode Observer-Based Sensor Fault Detection in DC Microgrid’s Buck Converter |
| title_full_unstemmed | Higher Order Sliding Mode Observer-Based Sensor Fault Detection in DC Microgrid’s Buck Converter |
| title_short | Higher Order Sliding Mode Observer-Based Sensor Fault Detection in DC Microgrid’s Buck Converter |
| title_sort | higher order sliding mode observer based sensor fault detection in dc microgrid s buck converter |
| topic | DC microgrid distribution generation units fault detection higher order sliding mode observer Lyapunov’s stability multi sensor faults |
| url | https://www.mdpi.com/1996-1073/14/6/1586 |
| work_keys_str_mv | AT daijirynarzary higherorderslidingmodeobserverbasedsensorfaultdetectionindcmicrogridsbuckconverter AT kalyanacveluvolu higherorderslidingmodeobserverbasedsensorfaultdetectionindcmicrogridsbuckconverter |