References | Year | Challenges | Solutions | Performance | Feasibility | |
---|---|---|---|---|---|---|
Insulation coordination | Strong power-voltage coupling | |||||
D'Arco, S.; et al. [131] | 2012 | √ |  | •  Non-insulated converters | •  Wind farm efficiency increased | ** |
Shi, G.; et al. [132] | 2016 |  | √ | •  DCWT with energy storage system | •  Wind energy capture enhanced •  Operation and control of DCWT improved | *** |
Zhang, H.; et al. [133] | 2016 |  | √ | •  A Topology with Wideband cable and MMC | •  Damping characteristic enhanced •  Resonance solved | *** |
Zhang, H.B.; et al. [134] | 2016 |  | √ | •  HVDC global control strategy | •  WTs operating within safety ensured •  Series connected failures are eliminated | *** |
Rong, F.; et al. [135] | 2018 |  | √ | •  Novel voltage balance circuit topology | •  MMPT achieved •  Terminal voltages balanced •  Wind farm normal operation ensured | *** |