An Offshore Wind Farm With DC Collection System Featuring Differential Power Processing

Pape, Marten; Kazerani, M.

doi:10.1109/tec.2019.2951331

Cited by 32 publications

(26 citation statements)

References 37 publications

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“…In fact, [26], [29], [33] are the only references that present a bidirectional prototype. Apart from that, as it can be observed in [40]- [42] although the system's power flow is unidirectional, the applied power converter is bidirectional. This is due to the fact that the power converter is working as both step-up and step-down (extended information is detailed in Section IV).…”

Section: ) Overviewmentioning

confidence: 90%

“…An example of it is shown in [40], [41]-(Diab-Marzouk 2015), where a voltage step-up/down prototype is presented. Indeed, by adding some extra switches, authors from [40]- [42]-(Pape 2019) make use of the architectures presented in Figure 5 for applications where both, buck and boost capabilities are required. This way, since the working range of the application is closer to = 1, a lower value is achieved, reducing the size of the converter.…”

Section: ) System's and Converter's Efficiencymentioning

confidence: 99%

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Review of Architectures Based on Partial Power Processing for DC-DC Applications

et al. 2020

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This paper presents a review of advanced architectures based on the partial power processing concept, whose main objective is to achieve a reduction of the power processed by the converter. If the power processed by the converter is decreased, the power losses generated by the power converter are reduced, obtaining lower sized converters and higher system efficiencies. Through the review 3 different partial power processing strategies are distinguished: Differential Power Converters, Partial Power Converters and Mixed strategies. Each strategy is subdivided into smaller groups that entail different architectures with their own advantages and disadvantages. Also, due to the lack of agreement that exists in the sources around the naming of the different architectures, this paper seeks to stablish a nomenclature that avoids confusion when indexing this type of architectures. Regarding Partial Power Converters an extensive application oriented description is also developed. Finally, the main conclusions obtained through the review are presented.

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Section: ) Overviewmentioning

confidence: 90%

Section: ) System's and Converter's Efficiencymentioning

confidence: 99%

Review of Architectures Based on Partial Power Processing for DC-DC Applications

et al. 2020

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“…Further opportunities have been identified by replacing the offshore AC collection system with an offshore series-connection of wind turbines with DC outputs [1]. In the recent past, several wind farm configurations featuring a series connected collection system have been proposed [1]- [18]. One such system implements a series-connected DC wind farm based on the notion of differential power processing [18] with the aim to increase overall conversion efficiency and reduce wind turbine converter size.…”

Section: Introductionmentioning

confidence: 99%

“…However, this simplicity relies on the availability of full-scale converters operating independently of one another in a wind farm. Such a configuration is not available in the wind farm configuration discussed in [18], which features a differential power processing approach. Intentionally limited converter power capacity and state dependence on the operating points of other wind turbines in a series string create challenges in starting a wind turbine without introducing additional or oversized hardware requirements.…”

Section: Introductionmentioning

confidence: 99%

“…The contribution of this paper is the introduction of a wind turbine startup procedure for the wind turbine configuration of [18] that enables wind turbines to successfully start under any operating condition that is long-term feasible, while avoiding increased requirements on the component ratings of the converters of each wind turbine. Successful wind turbine startup and shutdown for all important wind conditions are demonstrated through simulation.…”

Section: Introductionmentioning

confidence: 99%

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Turbine Startup and Shutdown in Wind Farms Featuring Partial Power Processing Converters

Pape

Kazerani

2020

IEEE Open J. Power Energy

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The wind turbine startup and shutdown procedures for electrical subsystems are straightforward for wind turbines featuring full-scale power electronic converters and have not required significant attentions from the research community. However, for offshore wind farms featuring series-connected dc collection systems and differential power processing capabilities, the controllable wind turbine power converters might not be rated in such a way that a full-scale output power difference can be handled within a series string. As startup and shutdown procedures can require a transition from zero to full power, a more elaborate design is required to ensure that wind turbines can still start and stop reliably under all conditions, without compromising advantages in reduced wind turbine converter ratings with differential power processing capabilities. In this paper, the startup and shutdown procedures for a series-dc wind farm featuring diode-bridge rectifiers and partial power processing converters as wind turbine converters, are investigated and constraints on converter ratings are evaluated. Index Terms-Offshore wind farm, series-connected DC collection system, partial power processing, differential power processing, wind turbine startup, wind turbine shutdown Marten Pape (S'14) received his B.Eng.

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Performance optimization of a dual-rotor ducted wind turbine by using response surface method

Taghinezhad

Alimardani

Masdari

et al. 2021

Energy Conversion and Management: X

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An Offshore Wind Farm With DC Collection System Featuring Differential Power Processing

Cited by 32 publications

References 37 publications

Review of Architectures Based on Partial Power Processing for DC-DC Applications

Review of Architectures Based on Partial Power Processing for DC-DC Applications

Turbine Startup and Shutdown in Wind Farms Featuring Partial Power Processing Converters

Performance optimization of a dual-rotor ducted wind turbine by using response surface method

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