Multilevel Modular DC/DC Power Converter for High-Voltage DC-Connected Offshore Wind Energy Applications

Parastar, Amir; Kang, Yong Cheol; Seok, Jul-Ki

doi:10.1109/tie.2014.2363818

Cited by 74 publications

(30 citation statements)

References 28 publications

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“…The voltage level from the wind turbine itself is usually 6.6 kV. When choosing a specific voltage level to charge the energy store installed on board the CTV unit, it is important to consider the choice of a suitable transformer, unidirectional electricity converter and energy store to charge the batteries installed on the CTV in a situation where the wind turbine does not produce electricity due to lack of adequate wind strength [17][18][19].…”

mentioning

confidence: 99%

Analysis of the Use of Electric Drive Systems for Crew Transfer Vessels Servicing Offshore Wind Farms

Łebkowski

2020

Energies

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The article presents issues related to the possibility of using electric propulsion systems in units used to transport crews servicing wind towers at sea. Offshore wind energy issues are discussed. Proposals for electric propulsion systems that could be used on units for transporting crews servicing offshore wind farms are presented. The possibility of using purely electrical drive systems or hybrid drive systems operating in a diesel-electric configuration is analyzed. By observing the motion of real CTV units, based on the data from the MarineTraffic service, a mathematical simulation model was developed, for which a number of simulations were carried out in the Modelica environment. The developed mathematical model takes into account the dynamic loads acting on the ship’s hull, hydrodynamic resistances, electric and diesel propulsion systems’ properties together with their individual elements’ characteristics. The tests of the electric propulsion system showed reduced fuel consumption (approx. 60%) and harmful gas emissions to the atmosphere (approximately 70%) in relation to conventional, internal combustion engine propulsion.

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confidence: 99%

Analysis of the Use of Electric Drive Systems for Crew Transfer Vessels Servicing Offshore Wind Farms

Łebkowski

2020

Energies

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“…In the switched-capacitor network, the flying-capacitor C f could be served as an energy buffer. According to (26) and (27), the increased or decreased charges on C f is U o *T s /R, which could be described by another way of C f *∆u Cf , where ∆u Cf represents the voltage ripple of C f . Finally, the voltage ripple of C f is derived by:…”

Section: Ripple Analysismentioning

confidence: 99%

An Input-Parallel-Output-Series Switched-Capacitor Three-level Boost Converter with a Three-Loop Control Strategy

Chen

Wang

2018

Energies

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There has been increasing interest for industry applications, such as solar power generation, fuel cell systems, and dc microgrids, in step-up dc-dc converters with reduced number of components, low component stress, small input ripples and high step-up ratios. In this paper, an input-parallel-output-series three-level boost (IPOS-SC-TLB) converter is proposed. In addition to achieving the required performance, the input and output terminals can share the same ground and an automatic current balance function is also achieved in the IPOS-SC-TLB converter. Besides, a capacitor voltage imbalance mechanism was revealed and a three-loop control strategy composed of output voltage loop, input current loop and voltage-balance loop was proposed to address the voltage imbalance issue. Finally both simulation and experiment studies have been conducted to verify the effectiveness of the IPOS-SC-TLB converter and the three-loop control strategy.

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“…They are widely used in medium voltage motor driver [3], high-voltage direct current (HVDC) transmission systems [4], static var generator (SVG) [5], active power filter (APF) [6] and other applications [7,8]. Several topologies for multilevel inverters have been proposed in the past decades, including diode-clamped [9], flying capacitor [1], cascaded H-bridge [10] and modular multilevel [11].…”

Section: Introductionmentioning

confidence: 99%

A Switching Frequency Optimized Space Vector Pulse Width Modulation (SVPWM) Scheme for Cascaded Multilevel Inverters

et al. 2017

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This paper presents a novel switching frequency optimized space vector pulse width modulation (SVPWM) scheme for cascaded multilevel inverters. The proposed SVPWM is developed in a α β coordinate system, in which the voltage vectors have only integer entries and the absolute increment of coordinate values between adjacent vectors is equal to dc-bus voltage of power cells (1 pu). The new SVPWM scheme is built with three categories of switching paths. During each switching path, the change of one phase voltage is limited in 1 pu. This contributes to decrease the number of commutations of switches. The proposed SVPWM scheme is validated on a 7-level cascaded inverter and the results show that it significantly outperforms traditional SVPWM schemes in terms of decreasing the number of switch commutations.

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Multilevel Modular DC/DC Power Converter for High-Voltage DC-Connected Offshore Wind Energy Applications

Cited by 74 publications

References 28 publications

Analysis of the Use of Electric Drive Systems for Crew Transfer Vessels Servicing Offshore Wind Farms

Analysis of the Use of Electric Drive Systems for Crew Transfer Vessels Servicing Offshore Wind Farms

An Input-Parallel-Output-Series Switched-Capacitor Three-level Boost Converter with a Three-Loop Control Strategy

A Switching Frequency Optimized Space Vector Pulse Width Modulation (SVPWM) Scheme for Cascaded Multilevel Inverters

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