High-voltage high-power direct-drive offshore wind generating set based on superconducting motor

Abstract

The invention relates to a high-voltage high-power direct-drive offshore wind generating set based on a superconducting motor. The offshore wind generating set comprises a wind machine, a main shaft, a low-speed high-temperature superconducting generator, a generator side converter, a power grid side converter and a master controller, wherein the main shaft is connected with the wind machine and the generator; a direct-current capacitor is connected between the generator side converter and the power grid side converter; and the master controller is in communication connection with the generator side converter and the power grid side converter. For the high-voltage high-power direct-drive offshore wind generating set, a gear box can be omitted, and the fault rate, the weight of the whole machine and the construction cost of a wind power station can be reduced, so that the defect of the existing offshore wind generating set can be overcome.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a high-voltage and high-power direct-drive offshore wind power generating set based on a superconducting motor. Background technique [0002] Offshore wind power has the characteristics of abundant resources, high power generation utilization hours, no land occupation and suitable for large-scale development. It is the latest frontier of global wind power development. According to the "Twelfth Five-Year" energy plan and renewable energy plan that my country is formulating, in 2015, my country will build 5 million kilowatts of offshore wind power, form a complete set of offshore wind power technologies and establish a complete industrial chain. After 2015, my country's offshore wind power will Enter the stage of large-scale development and reach the international advanced technology level. In 2020, my country's offshore wind power will reach 30 million kilowatts. Therefore, o...

AI Technical Summary

Problems solved by technology

However, the wind turbines currently in use have the following problems: firstly, after the power of the generator increases, the weight will be heavy; secondly, a gearbox is used to change the speed between the generator and the wind turbine, and the gearbox is prone to failure and low reliability , often need maintenance; in addition, the existing wind turbines can only be connected to the 10kV power grid through a step-up transformer, and a special transformer platform needs to be built at sea, which increases the equipment and installation difficulty of wind turbines

[0004] This shows that the above-mentioned existing offshore wind power generators obviously still have inconvenience and defects in structure and use, and need to be further improved urgently.

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