Safe feathering port diagnosis circuit and method
A technology for diagnosing circuits and safe feathering, which is used in wind power generation, electrical testing/monitoring, etc., and can solve problems such as failure of safe feathering port fault diagnosis
Pending Publication Date: 2022-08-05
SHENZHEN INOVANCE TECH
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[0005] The main purpose of the present invention is to provide a safety feathering port diagnosis circuit and method, aiming to solve the technical problem that the safety feathering port cannot be fault diagnosed in the prior art
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[0046] It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0048] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relationship between various components under a certain posture (as shown in the accompanyin...
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The invention provides a safe feathering port diagnosis circuit and method.The safe feathering port diagnosis circuit outputs a diagnosis signal to a diagnosis processing module corresponding to the diagnosis signal when diagnosing a safe feathering port; the diagnosis processing module diagnoses a to-be-diagnosed module corresponding to the diagnosis signal according to the diagnosis signal, and outputs a feedback signal to the control module through the to-be-diagnosed module corresponding to the diagnosis signal; and the control module determines the fault state of the to-be-diagnosed module corresponding to the diagnosis signal according to the diagnosis signal and the feedback signal, and outputs a hardware fault signal when the to-be-diagnosed module corresponding to the diagnosis signal is in the fault state. According to the invention, the control module outputs the diagnosis signal, the diagnosis processing module diagnoses and feeds back the to-be-diagnosed module corresponding to the diagnosis signal, and the control module can determine whether the to-be-diagnosed module corresponding to the diagnosis signal is in a fault state according to the feedback signal.
Description
technical field [0001] The invention relates to the technical field of wind power generation, in particular to a safety feathering port diagnostic circuit and method. Background technique [0002] The prior art uses a common IO port as the safety feathering IO port, and the common IO port has no diagnostic function. The safety feathering functions are emergency stop, safety chain input, and limit, which are respectively used to control the blade emergency stop, safe feathering operation or stop at the limit. Among them, only the safety chain input can judge whether there is an abnormality in the safety chain by comparing the synchronization of the input signals. The existing safety relay circuit, which outputs when the pitch drive is in an abnormal state, can be used to trigger the safety feathering of other blades. The snubber circuit module also has no diagnostic function. The above IO ports and circuits determine whether the driver can control the blade to operate and ...
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IPC IPC(8): G05B23/02
CPCG05B23/0213G05B2219/24065Y02E10/72
Inventor 李志刘浩瑞
Owner SHENZHEN INOVANCE TECH