Hydraulic brake system of wind driven generator

Abstract

The invention relates to a hydraulic braking system of a wind power generator, which includes a control module and an actuator for braking and releasing the brake of the main shaft or rotating shaft of the wind power generator, and is characterized in that it also includes at least one The second cylinder of the mechanism, a first cylinder with a piston and communicated with the second cylinder, a stepping motor, connected between the stepping motor and the piston of the first cylinder and a transmission part that can move back and forth in the axial direction, the executive mechanism is connected with the second cylinder body, the signal output end of the control module is connected with the stepper motor to control the operation of the stepper motor, and the stepper motor The motor output shaft is in transmission connection with the transmission part, so that the piston of the first cylinder moves back and forth axially in the first cylinder. The braking device of the hydraulic braking system of the wind power generator of the present invention has simple structure and reliable performance, and can realize flexible and reliable braking.

Description

Technical field [0001] The present invention involves a hydraulic suppression system, and it is more specifically a hydraulic suppression system applied to a wind turbine. Background technique [0002] Today, with the increasingly prominent energy and environmental issues, the development and utilization of renewable energy is particularly important.As an important part of the new energy field, wind power is of great significance to its research and development.Among them, the wind brake system plays a role in protecting the wind turbine under bad circumstances. [0003] In the process of re -operation of the wind power generator, its speed will increase as the external wind speed increases. When the wind speed is too large, it may cause the wind power generator to generate too high electrical energy and increase the coil temperature of the wind generator to increase the coil temperatureBurning the generator, or the generated current is too large to damage the rear -level equipme...

AI Technical Summary

Problems solved by technology

The mechanical parts of the control system of the traditional wind turbine brake device are relatively complicated, and the failure rate is high; at the same time, there is a problem that the braking process is uncontrollable, the braking time is too short, the braking kinetic energy is too large, and the impact on the wind turbine shaft is very large. It is easy to cause damage to the shaft of the wind turbine

Electromagnetic brakes are unreliable, and the brakes generate a lot of heat at the same time, which makes the temperature of the generator rise rapidly. It is not suitable for permanent magnet synchronous generators. For wind turbines with low speed and high torque, the traditional electromagnetic brake force can no longer meet the requirements. The amount is relatively large

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