Blade position simulating device of variable-pitch loading test platform

Abstract

At present, the failure rate of an electric variable-pitch system of a wind turbine generator system is very high, and generally a motor is adopted to detect the quality of a drag-type test platform domestically. However, before and after the platform is tested every time, parameters of a tested variable-pitch system need to be amended, and the test steps are complex. Meanwhile, the synchronism of a variable-pitch motor encoder and a blade encoder can not be detected, and testing is not complete. In addition, a specially-assigned person needs to be arranged to be responsible for a limit switch of the whole variable-pitch system to assist in completing the test on the variable-pitch system, and safety performance is not high. The invention provides a blade position simulating device of a variable-pitch loading test platform. The blade position simulating device of the variable-pitch loading test platform is mainly composed of a simulation gearbox, belts, a simulation drive gear, a simulation blade bearing inner tooth, a simulation blade bearing, a simulation blade encoder counting tooth and a simulation limit stop. By simulating the actual position of a blade and the triggering state of the limit switch, the testing process is closer to the real working condition, and the testing result is truer and more complete. Meanwhile, the testing process is simpler and the safety performance is higher.

Description

technical field [0001] The invention relates to a blade position simulation device in the on-load test of a wind power pitch control system. Background technique [0002] At present, the wind power industry is developing rapidly in my country, but the failure rate of the electric pitch system remains high, which has become a common problem in the domestic wind power industry. In order to improve the safety, stability and reliability of wind turbines, it is necessary to establish a load test platform for wind power pitch system to perform quality inspection and fault analysis of the pitch system. [0003] At present, there are generally two types of electric pitch test platforms with load in China, one is a heavy-loaded test platform, and the other is a motor-to-drag test platform. Due to the high cost of heavy-loaded test platforms, complicated loading operations, and low cost performance, most manufacturers use motor-to-drag test platforms. [0004] The motor-to-drag test...

AI Technical Summary

Problems solved by technology

The testing steps are cumbersome and will waste a lot of time

[0007] 2. The following performance of the pitch system can only be judged by the value of the rotary encoder of the pitch motor. It is impossible to predict the blade pitch during the actual pitch operation of the fan, and it is impossible to determine the synchronization between the encoder of the pitch motor and the encoder of the blade. Sex, the test is not comprehensive enough

At the same time, it may happen that due to human negligence, the operation of the pitch motor is not stopped in time in an emergency, resulting in damage to the pitch system and unnecessary economic losses.

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