Novel Wind Power Plant Topology for DC Power Transmission Systems

Abstract

A promising topology to interconnect wind power plants is proposed. The advantages of this series-connected system over the conventional parallel system are first discussed, and a control strategy for the series-connected system is examined in order to realize optimum wind energy usage. The dynamic performance of the series-connected system is investigated through simulation and experiments while an effective method of realizing high-quality output power is also shown. Finally, a novel topology featuring wind turbine/generators connected in series that is suitable for DC power transmission is introduced, which can enlarge the scale of the wind power plant without increasing the system voltage level.

Dynamic performances of a practical scale wind power plant consisting of series-connected ten wind turbine generators

“…As in the figure, diodes are connected in parallel to the rectifier output, respectively, to bypass for stopped wind turbine generators [8]. In this configuration, only one inverter is enough, making the system very simple compared to the conventional configuration of a wind power plant [9]. And, it is recognized that this configuration realizes a wind power plant without a substation, making reduced construction and maintenance costs possible.…”