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Online Health Monit...
Online Health Monitoring of DC-Link Capacitors in Modular Multilevel Converters for FACTS and HVDC Applications
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- Asoodar, Mohsen (författare)
- Hitachi ABB Power Grids, S-72212 Västerås, Sweden.
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- Nahalparvari, Mehrdad (författare)
- KTH,Elkraftteknik
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- Danielsson, Christer (författare)
- Hitachi ABB Power Grids, S-72212 Västerås, Sweden.
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- Söderström, Rasmus (författare)
- Hitachi ABB Power Grids, FACTS Unit, S-72212 Västerås, Sweden.
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- Nee, Hans-Peter, 1963- (författare)
- KTH,Elkraftteknik
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Hitachi ABB Power Grids, S-72212 Västerås, Sweden Elkraftteknik (creator_code:org_t)
- Institute of Electrical and Electronics Engineers (IEEE), 2021
- 2021
- Engelska.
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Ingår i: IEEE transactions on power electronics. - : Institute of Electrical and Electronics Engineers (IEEE). - 0885-8993 .- 1941-0107. ; 36:12, s. 13489-13503
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- This article presents an online health monitoring scheme for dc capacitors in modular multilevel converters (MMCs). The health monitoring algorithm is based on detecting changes in the dc capacitance value over time. The proposed algorithm only utilizes measurements that are typically available in flexible alternating current transmission systems and high-voltage direct current applications. Hence, in the proposed estimation method, no additional sensors are used. The estimation scheme considers the presence of noise in voltage and current measurements, and utilizes a recursive least square estimator in conjunction with a special low-pass filter to minimize the estimation errors. Simulation results of a hardware replica, as well as experimental results on a low-power MMC prototype show that the proposed scheme can identify the dc-link capacitance value with a maximum error of 1%.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- Capacitors
- Estimation
- Capacitance
- Current measurement
- Voltage measurement
- Automatic voltage control
- Monitoring
- DC capacitor
- flexible alternating current transmission systems (FACTS)
- health estimation
- modular multilevel converter (MMC)
- online monitoring
- reliability
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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