Selection of capacitance for stable operation of low power DC system with constant power loads
Abstract The connection of constant power loads (CPL) in a low power dc system leads to a reduction in the stability margin of the system. Most of the existing techniques increase the stability margin by modifying the controller for CPL or source converter at the cost of deterioration in the perform...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-03-01
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| Series: | IET Generation, Transmission & Distribution |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/gtd2.12060 |
| _version_ | 1811261127048298496 |
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| author | Shirazul Islam Souradip De Sandeep Anand Soumya Ranjan Sahoo |
| author_facet | Shirazul Islam Souradip De Sandeep Anand Soumya Ranjan Sahoo |
| author_sort | Shirazul Islam |
| collection | DOAJ |
| description | Abstract The connection of constant power loads (CPL) in a low power dc system leads to a reduction in the stability margin of the system. Most of the existing techniques increase the stability margin by modifying the controller for CPL or source converter at the cost of deterioration in the performance of converters. Few publications have suggested methods to determine the value of dc‐link capacitance required for stable operation of dc microgrid with CPL. These methods do not necessarily give the minimum possible capacitance as a solution. This paper suggests a method to determine the lower bound on the value of capacitor, for stable operation of dc system. A dc system with both linear and CPL loads is considered. Detailed mathematical analysis is used to determine the range of capacitance to ensure the stability of equilibrium point. Further, this paper discusses the effects of variation in linear loads on the selection of capacitor. The procedure of capacitor selection for a low power dc system is included. Using the real‐time digital simulator and a digital signal processor, controller hardware‐in‐loop based validation is carried out for the proposed approach. |
| first_indexed | 2024-04-12T18:57:54Z |
| format | Article |
| id | doaj.art-8a4548760ffe4fd1867c33c6916399f4 |
| institution | Directory Open Access Journal |
| issn | 1751-8687 1751-8695 |
| language | English |
| last_indexed | 2024-04-12T18:57:54Z |
| publishDate | 2021-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Generation, Transmission & Distribution |
| spelling | doaj.art-8a4548760ffe4fd1867c33c6916399f42022-12-22T03:20:15ZengWileyIET Generation, Transmission & Distribution1751-86871751-86952021-03-0115580982610.1049/gtd2.12060Selection of capacitance for stable operation of low power DC system with constant power loadsShirazul Islam0Souradip De1Sandeep Anand2Soumya Ranjan Sahoo3Department of Electrical Engineering Indian Institute of Technology Kanpur Kanpur IndiaDepartment of Electrical Engineering Indian Institute of Technology Kanpur Kanpur IndiaDepartment of Electrical Engineering Indian Institute of Technology Kanpur Kanpur IndiaDepartment of Electrical Engineering Indian Institute of Technology Kanpur Kanpur IndiaAbstract The connection of constant power loads (CPL) in a low power dc system leads to a reduction in the stability margin of the system. Most of the existing techniques increase the stability margin by modifying the controller for CPL or source converter at the cost of deterioration in the performance of converters. Few publications have suggested methods to determine the value of dc‐link capacitance required for stable operation of dc microgrid with CPL. These methods do not necessarily give the minimum possible capacitance as a solution. This paper suggests a method to determine the lower bound on the value of capacitor, for stable operation of dc system. A dc system with both linear and CPL loads is considered. Detailed mathematical analysis is used to determine the range of capacitance to ensure the stability of equilibrium point. Further, this paper discusses the effects of variation in linear loads on the selection of capacitor. The procedure of capacitor selection for a low power dc system is included. Using the real‐time digital simulator and a digital signal processor, controller hardware‐in‐loop based validation is carried out for the proposed approach.https://doi.org/10.1049/gtd2.12060Control of electric power systemsDistributed power generationCapacitorsPower system controlStability in control theory |
| spellingShingle | Shirazul Islam Souradip De Sandeep Anand Soumya Ranjan Sahoo Selection of capacitance for stable operation of low power DC system with constant power loads IET Generation, Transmission & Distribution Control of electric power systems Distributed power generation Capacitors Power system control Stability in control theory |
| title | Selection of capacitance for stable operation of low power DC system with constant power loads |
| title_full | Selection of capacitance for stable operation of low power DC system with constant power loads |
| title_fullStr | Selection of capacitance for stable operation of low power DC system with constant power loads |
| title_full_unstemmed | Selection of capacitance for stable operation of low power DC system with constant power loads |
| title_short | Selection of capacitance for stable operation of low power DC system with constant power loads |
| title_sort | selection of capacitance for stable operation of low power dc system with constant power loads |
| topic | Control of electric power systems Distributed power generation Capacitors Power system control Stability in control theory |
| url | https://doi.org/10.1049/gtd2.12060 |
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