A Resonant ZVZCS DC–DC Converter With Two Uneven Transformers for an MVDC Collection System of Offshore Wind Farms

Shu, Liangcai; Chen, Wu; Ning, Guangfu; Cao, Wu; Mashino, Jun; Zhao, Jianfeng; Li, Chun; He, Guoqing

doi:10.1109/tie.2017.2694389

Cited by 28 publications

(13 citation statements)

References 23 publications

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“…The architecture was proposed as a unique solution for DC-DC topologies with medium frequency, high voltage gain, and high power. The study by Shu et al (2017) presented a system for offshore wind farm distribution that consisted of two transformers (one main and one auxiliary), two full-bridge inverters that share a bridge leg, and a voltagedoubler rectifier. A prototype was developed and used to demonstrate the design and working principle of the proposed converter.…”

Section: Wind Energy Conversion Systemsmentioning

confidence: 99%

Resonant Power Converters for Renewable Energy Applications: A Comprehensive Review

et al. 2022

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Studies on resonant power converters (RPCs) have received much attention due to the rapid growth of their potential in modern power and renewable energy applications such as photovoltaic, electric vehicles, wind, and fuel cells. Consequently, a significant number of studies focusing on RPC topologies for renewable energy applications is available. Generally, these studies have addressed several aspects, such as the development of their soft switching feature, smooth waveforms, high power density, and high efficiency. With this in mind, the present paper aims to review the development of the RPCs, challenges in their development, and comparison between common topologies as highlighted in literature. In addition, the use of RPCs in various applications of renewable energy is highlighted, focusing on some of the recently utilized topologies based on their constructions and achievements. There are still several issues and challenges in research that need to be considered for future improvement of the RPC performance in renewable energy applications. The improvement may require modifications on the circuit design or control strategies.

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Section: Wind Energy Conversion Systemsmentioning

confidence: 99%

Resonant Power Converters for Renewable Energy Applications: A Comprehensive Review

et al. 2022

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“…Employing the resonance tank is favourable for stepping up the voltage together with soft switching at higher power level [4], [64]. Nevertheless, the series resonant DAB converters have some drawbacks which are the extra components resulting in large size, high-cost [60], and high amount of turning OFF losses at constant frequency [62], [63].…”

Section: A Dual Active Bridgementioning

confidence: 99%

“…Offshore wind farms with more stable wind profiles and consistent wind conditions are preferable than onshore ones in terms of high power rating. Connecting offshore wind farms to MVDC collection system leads to a low production cost of energy and expanding both the power rating of wind farms and voltage rating of the converter without limitations on generator types [13], [64]. This technology provides a promising future for offshore wind farms applications by eliminating the additional conversion stages and getting better system reliability [79], [95].…”

Section: B Offshore Wind Farmsmentioning

confidence: 99%

“…The features of high-gain voltage and high power should be considered in terms of selecting the DC-DC converter in this application, since the converter are used to boost the voltage generated by wind turbines [64], [89], [98]. In addition, reliability is an important issue because of the difficulty in getting access to the turbine at sea and transporting equipment to installation sites [77].…”

Section: B Offshore Wind Farmsmentioning

confidence: 99%

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Isolated and Nonisolated DC-to-DC Converters for Medium-Voltage DC Networks: A Review

Alhurayyis¹,

Elkhateb²,

Morrow³

2021

IEEE J. Emerg. Sel. Topics Power Electron.

100

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MVDC technology is a promising solution to avoid installation of new AC networks. MVDC can provide optimum integration of large-scale renewable energy sources, the interconnection of different voltage levels of DC and AC grids with the ancillary services. The development in MVDC depends significantly on the DC-DC converters. Such converters support the modern trends of utilising medium-frequency transformers in power networks. Research on isolated converters technology is in its infancy and limited by the conversion ratio and component ratings. Besides, there is no standards exist covering specific aspects of isolated converter product. Thus, a review of such converters is needed. This work presents, for the first time, a review of the DC-DC power converter families in MVDC grids including the leading families which are isolated and nonisolated converters, as well as other subfamilies comparing the specifications and characteristics. Also, the applications of these converters are provided by focusing on the essential requirements for each application. Index Terms-MVDC grids, DC-DC power converters, dual active bridge (DAB), multilevel converter. TABLE I RECOMMENDED CLASSES FOR MVDC VOLTAGE MVDC Class (kV) Nominal Rated Voltage (kV) Maximum Rated Voltage (kV)

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“…The concept of MVDC ultimately is a collection platform designed to help integrate renewable and future needs, addressing general areas of electric power conversion [6]. Owing to its advantages such as lower production cost and converter ratings [7] and considering the present migration of loads from AC to DC, and DC power generation of renewables, MVDC systems improve energy delivery efficiency and fill the gap between transmission and distribution [8] (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

Input‐parallel–output‐series control strategy for three‐level medium‐voltage DC grid‐type converter

Shah

Xie

Yan

et al. 2018

J. eng.

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A Resonant ZVZCS DC–DC Converter With Two Uneven Transformers for an MVDC Collection System of Offshore Wind Farms

Cited by 28 publications

References 23 publications

Resonant Power Converters for Renewable Energy Applications: A Comprehensive Review

Resonant Power Converters for Renewable Energy Applications: A Comprehensive Review

Isolated and Nonisolated DC-to-DC Converters for Medium-Voltage DC Networks: A Review

Input‐parallel–output‐series control strategy for three‐level medium‐voltage DC grid‐type converter

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