Control and Design of DC-Grids for Offshore Wind Farms

Meyer, Christoph; Hoing, Markus; Peterson, Anders; Doncker, Rik W. De

doi:10.1109/ias.2006.256677

Cited by 70 publications

(97 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These advantages include fully-controlled power flow, transmission distance using DC not affected by cable charging currents, and fewer cables required [6][7][8]. HVDC transmission is based on conventional line-commutated converter (LCC) [8][9][10], voltage-source converter (VSC) [2,[11][12][13][14][15] or combination of LCC and VSC [16,17]. VSC based HVDC is superior to LCC based HVDC for connection of large wind farms due to its ability to independently control the reactive power flow, faster dynamic response, ability to connect to weak AC network, prevention of fault propagation and smaller footprint of converter station and auxiliary equipment [18].…”

Section: Offshore Wind Farm Electricity Grid Interconnectionmentioning

confidence: 99%

“…With the development of wind turbine and power electronics technologies, large scale wind farms of hundreds of MWs of power are being developed in many countries around the world. More and more of these farms are proposed to be located offshore, due to large space OPEN ACCESS requirements [2]. Compared with the onshore wind farms, the offshore wind farms have access to significantly better wind energy resources and hence offer larger energy generating capability.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Review of DC System Technologies for Large Scale Integration of Wind Energy Systems with Electricity Grids

Shao

Agelidis

2010

Energies

View full text Add to dashboard Cite

Abstract:The ever increasing development and availability of power electronic systems is the underpinning technology that enables large scale integration of wind generation plants with the electricity grid. As the size and power capacity of the wind turbine continues to increase, so is the need to place these significantly large structures at off-shore locations. DC grids and associated power transmission technologies provide opportunities for cost reduction and electricity grid impact minimization as the bulk power is concentrated at single point of entry. As a result, planning, optimization and impact can be studied and carefully controlled minimizing the risk of the investment as well as power system stability issues. This paper discusses the key technologies associated with DC grids for offshore wind farm applications.

show abstract

Section: Offshore Wind Farm Electricity Grid Interconnectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Review of DC System Technologies for Large Scale Integration of Wind Energy Systems with Electricity Grids

Shao

Agelidis

2010

Energies

View full text Add to dashboard Cite

show abstract

“…The applications of offshore wind form is compared with the recital of Full Bridge (FB) Converter, Single Active Bridge, LCC resonant Converter [7][8][9][10]. The 3 topologies such as 3-phase SAB converter, series resonant converter and dual active bridge (DAB) converter, which are more relevant for high-power applications due to low current stress of each bridge, are also studied and intended for high-power high voltage step-up applications [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

A Modified High Gain Step up Converter Using Multilevel Inverter for HVDC Application and Harmonics Reduction

2018

IJCTR

View full text Add to dashboard Cite

: The large-scale renewable energy sources and HVDC grid is connected by a pure DC system where high-power high-voltage step-up DC-DC converters are the solution tools to transmit the electrical energy. The converter can achieve high efficiency and low-cost with the help of an LC parallel resonant tank where soft switches are employed. If transformer is used large amount of harmonic distortion is observed. Hence an attempt is made in this project to reduce harmonic distortion, overcome power demand and to produce high step up voltage by using multilevel inverter topology and used to reduces the harmonics. The proposed method is extensively simulated in simulated in MATLAB/SIMULINK.

show abstract

“…Various approaches have been studied in [7], [8] and [9]. The dc voltage must be boosted significantly above the generator's peak terminal voltage level in order to avoid large current at the collector.…”

mentioning

confidence: 99%

Interconnection of Direct-Drive Wind Turbines Using a Series-Connected DC Grid

Veilleux

Lehn

2014

IEEE Trans. Sustain. Energy

125

View full text Add to dashboard Cite

This thesis presents the concept of a "distributed HVDC converter" for offshore wind farms. The proposed converter topology allows series interconnection of wind turbines obviating the necessity of transformers and an offshore platform. Each wind turbine is equipped with a 5MW permanent-magnet synchronous generator and an ac-dc-dc converter. The converter topology is a diode rectifier (ac-dc) cascaded with a single-switch step-down converter (dc-dc). The dc-dc stage allows the current to flow at all times in the dc link while regulating generator torque. The receiving end is equipped with a conventional thyristor-based HVDC converter. The inverter station is located onshore and it regulates the dc link current to be constant. Stability of the configuration and independent operation of the wind turbines are validated through simulations using the PSCAD/EMTDC software package. Protection for some key dc fault scenarios are discussed and a possible protection strategy is proposed.ii

show abstract

Control and Design of DC-Grids for Offshore Wind Farms

Cited by 70 publications

References 6 publications

Review of DC System Technologies for Large Scale Integration of Wind Energy Systems with Electricity Grids

Review of DC System Technologies for Large Scale Integration of Wind Energy Systems with Electricity Grids

A Modified High Gain Step up Converter Using Multilevel Inverter for HVDC Application and Harmonics Reduction

Interconnection of Direct-Drive Wind Turbines Using a Series-Connected DC Grid

Contact Info

Product

Resources

About