Pitch system control method, pitch system and state machine based on state machine

Abstract

The pitch system control method based on the state machine provided by the present invention is applied to the state machine of the pitch system. The control method includes: determining a plurality of state machine modes of the pitch system, and the state machine mode includes: standby mode, normal working mode, emergency closed-loop mode, and emergency open-loop mode; when the pitch system is in any of the state machine modes, it is judged whether the pitch system satisfies the state mode switching condition, and if so, the control is different The state machine mode is switched. The invention defines the state machine mode of the pitch system based on the state machine, controls the switching between different state machine modes through the pitch system, ensures the safe and reliable operation of the wind power generating set, simplifies the logic, and reduces the space memory occupation. The action response time of the pitch system has been reduced.

Description

technical field [0001] The invention relates to the technical field of locomotive brake control, in particular to a state machine-based pitch control method, a pitch system and a state machine. Background technique [0002] In the wind power generation system, the pitch system is an important part of the wind turbine. The pitch system changes the angle of attack of the airflow on the blades by adjusting the pitch angle of the blades, and then controls the aerodynamic torque and aerodynamic torque captured by the wind wheel. Therefore, the control technology of the pitch system is related to the safe and reliable operation of the wind turbine, and affects the life of the wind turbine. [0003] The current pitch system control method follows the working process of the wind turbine generator set, and the pitch system sequentially controls the work of the wind turbine generator set, so as to realize the safe and reliable operation of the wind turbine generator set. [0004] How...

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Problems solved by technology

[0005] In order to solve the technical problems of the pitch system control method in the prior art, such as complex logic, large occupied space and memory, and low security, the present invention provides a state machine-based control method for the pitch system, which defines the pitch system based on the state machine. The state machine mode controls the switching between different state machine modes through the pitch system, which ensures the safe and reliable operation of the wind turbine generator set, simplifies the logic, reduces the space memory occupation, and reduces the action response time of the pitch system

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