A Novel Concept for Offshore Wind-Power Plant With DC Collection System Based on Radial-Connected Converter Topology

Voltage and reactive power correlation in multi-objective optimization of an offshore grid

“…The sum of all the grid-forming VSCs must be equal to the net active power infeed by the wind farms, thus Equation ( 12) can be simplified as Equation (13).…”

“…The nth VSC sharing factor must be defined as Equation ( 14) in order to satisfy the condition given in Equation (13).…”

“…The VSC abilities to control the active and reactive power independently, black start, and frequency support are the distinct features that open the new ways of designing offshore wind farm layout as well as export system [6][7][8][9][10][11]. A concept of collection system for offshore wind farm topology is presented to build the pure DC power system [12,13]. In the DC collection system, the wind turbines contain only turbine side converter and they are connected in series, called string, to raise the DC voltage of the transmission line.…”

Active and Passive Control of a Dual Rotor Wind Turbine Generator for DC Grids

“…The control system in [26] have a passive element, while no active control is considered. An active control strategy for the WTGs connected in series is proposed in [27], where a PM machine is interfaced to a 3-phase VSC whose output is rectified using a single active bridge (SAB). The control strategy in [27] allows for reduced number of controller switches, albeit operating at higher frequency, and with a reduced degree of freedom.…”

Modified reactive power allocation strategy for large‐scale offshore wind turbine considering subsystem configuration

“…Specifically, configured wind farms (WFs) incorporate full‐type converters, which offer ancillary services to the connected grid, thus enhancing controllability. These developments have been accelerating due to huge reductions in the costs of power electronic devices [7–9].…”