Analysis Methodology for Evaluation of Time-Delay Impact on Network-Based System for Droop-Controlled AC Microgrid
Potential performance improvements can be obtained by introducing communication techniques in the power electronic systems. However, network-induced time-delay could bring negative consequences of degrading performance or destabilizing the system in many cases. To investigate and handle the impacts...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-03-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/8/4/380 |
| _version_ | 1798041596288040960 |
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| author | Yao Zhang |
| author_facet | Yao Zhang |
| author_sort | Yao Zhang |
| collection | DOAJ |
| description | Potential performance improvements can be obtained by introducing communication techniques in the power electronic systems. However, network-induced time-delay could bring negative consequences of degrading performance or destabilizing the system in many cases. To investigate and handle the impacts of time-delay, a suit of analytical methodology is proposed, where both delay-insensitive and delay-sensitive control strategies of network-based system have their theoretical methods and different problem-solving paths. The former is to predict the maximum allowable boundaries of time-delay for releasing more network resources, and the latter is to use the controller-altering method for changing its original instability, respectively. The proposed methodology is concretely applied in network-based system of droop-controlled AC (Alternating Current) microgrid in islanded mode. Two different current-sharing strategies are mathematically analyzed and given to verify their validity. Experimental results also show the effectiveness of the proposed methodology in droop-controlled AC microgrid system, which provides theoretical guidance on how to use network-based control for the other power electronic systems. |
| first_indexed | 2024-04-11T22:23:44Z |
| format | Article |
| id | doaj.art-622ea996ef3c487f9d4bd8114a06fa73 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-04-11T22:23:44Z |
| publishDate | 2019-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-622ea996ef3c487f9d4bd8114a06fa732022-12-22T03:59:56ZengMDPI AGElectronics2079-92922019-03-018438010.3390/electronics8040380electronics8040380Analysis Methodology for Evaluation of Time-Delay Impact on Network-Based System for Droop-Controlled AC MicrogridYao Zhang0School of Automation, Hangzhou Dianzi University, Hangzhou 310018, ChinaPotential performance improvements can be obtained by introducing communication techniques in the power electronic systems. However, network-induced time-delay could bring negative consequences of degrading performance or destabilizing the system in many cases. To investigate and handle the impacts of time-delay, a suit of analytical methodology is proposed, where both delay-insensitive and delay-sensitive control strategies of network-based system have their theoretical methods and different problem-solving paths. The former is to predict the maximum allowable boundaries of time-delay for releasing more network resources, and the latter is to use the controller-altering method for changing its original instability, respectively. The proposed methodology is concretely applied in network-based system of droop-controlled AC (Alternating Current) microgrid in islanded mode. Two different current-sharing strategies are mathematically analyzed and given to verify their validity. Experimental results also show the effectiveness of the proposed methodology in droop-controlled AC microgrid system, which provides theoretical guidance on how to use network-based control for the other power electronic systems.https://www.mdpi.com/2079-9292/8/4/380Network-based controlfeedback gaintime-varying delaysdroop-controlled AC microgrid |
| spellingShingle | Yao Zhang Analysis Methodology for Evaluation of Time-Delay Impact on Network-Based System for Droop-Controlled AC Microgrid Electronics Network-based control feedback gain time-varying delays droop-controlled AC microgrid |
| title | Analysis Methodology for Evaluation of Time-Delay Impact on Network-Based System for Droop-Controlled AC Microgrid |
| title_full | Analysis Methodology for Evaluation of Time-Delay Impact on Network-Based System for Droop-Controlled AC Microgrid |
| title_fullStr | Analysis Methodology for Evaluation of Time-Delay Impact on Network-Based System for Droop-Controlled AC Microgrid |
| title_full_unstemmed | Analysis Methodology for Evaluation of Time-Delay Impact on Network-Based System for Droop-Controlled AC Microgrid |
| title_short | Analysis Methodology for Evaluation of Time-Delay Impact on Network-Based System for Droop-Controlled AC Microgrid |
| title_sort | analysis methodology for evaluation of time delay impact on network based system for droop controlled ac microgrid |
| topic | Network-based control feedback gain time-varying delays droop-controlled AC microgrid |
| url | https://www.mdpi.com/2079-9292/8/4/380 |
| work_keys_str_mv | AT yaozhang analysismethodologyforevaluationoftimedelayimpactonnetworkbasedsystemfordroopcontrolledacmicrogrid |