Sistema de controle distribuído para uma rede de turbinas eólicas offshore conectado por um link HVDC baseado em retificador de diodo
Keywords: Wind turbine offshore, diode-based rectifier, frequency control, HVDC link, wind farm
AbstractThis works presents a technique for the distributed control of the AC grid in offshore wind farms based on synchronous generators. This modular rectifier comprises one or more uncontrolled modules (such as diode rectifiers), and the proposed control technique allows the connection of the offshore wind farm to the grid onshore using a diode-based HVDC rectifier. Wind power supply systems receive a reactive power reference from an external central regulator to maintain the common frequency of the AC line. The proposed external control uses the control of commercial wind turbines. This method for controlling the voltage and frequency of the local offshore grid allows the operation of the HVDC link rectifiers. PSCAD® simulations are used to prove the technical feasibility of the control and the topology concept.