Control method of initial position of rotor of vertical shaft permanent magnet wind-driven generator

Abstract

The invention relates to a control method of an initial position of a rotor of a vertical shaft permanent magnet wind-driven generator. The method comprises the following steps that: under the circumstances of a zero speed and a speed within a 5% rated speed, stator current vector closed loop control is carried out and an oriented static stator linkage is established; because an included angle between a stator linkage and a rotor linkage generates an electromagnetic torque, the rotor linkage is forced to get closer to the stator linkage; and until a rotary set linkage is relatively static, the motor is stopped to make rotation and thus control on the rotor initial position is completed. According to the control method provided in the invention, on the basis of a traditional vector control framework, stator current closed-loop control is employed; only an original vector control is used to control a portion of the framework and there is no need to add any auxiliary hardware device. Under the circumstances that the system complexity is not substantially increased, the control method can be conveniently applied to starting control of a speed-free sensor of a permanent magnet wind-driven generator.

Description

technical field [0001] The patent of the present invention relates to a method for controlling the initial position of the rotor of a vertical axis permanent magnet wind power generator. Background technique [0002] With the intensification of the world's environmental crisis and energy crisis, countries are competing to develop renewable energy technologies, and our country is paying more and more attention to the use of renewable energy. my country plans that by 2050, the proportion of new energy power generation will reach 30% of the country's total power generation, and wind energy, as a clean and renewable energy source, will account for a large proportion of it. [0003] At present, the mainstream type of wind power industry is the horizontal axis wind turbine. Its good pitch power control characteristics enable it to operate in most wind conditions, but due to the uncertainty of the wind direction, it is necessary to increase the yaw control system to make the horizo...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for controlling the initial position of the rotor of a vertical axis permanent magnet wind turbine to solve the problem of initial positioning of the rotor

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