Abnormal detection method and device for converter and hall sensor
A hall sensor and anomaly detection technology, which is applied in the direction of measuring devices, instruments, and measuring electrical variables, etc., can solve problems such as cumbersome and complicated processes and difficult accurate positioning, and achieve the effect of avoiding risks
Active Publication Date: 2020-07-03
INVT POWER ELECTRONICS SUZHOU CO LTD
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Problems solved by technology
Under the current technical conditions, if there are abnormal phenomena such as phase reversal or poor contact of the Hall sensor, the abnormality of the Hall sensor can only be found when the converter is running normally with load, and it is difficult to find out that the Hall sensor itself is abnormal. Problem, because there are many reasons for this abnormal phenomenon, it is necessary to check many aspects to determine the real cause of the abnormality, such as control algorithm, load side and hardware detection, etc. need to be checked
Under the existing environment, if there is an abnormality of the Hall sensor, it cannot be found in the standby state of the converter and other equipment. It can only be judged step by step by monitoring the current of the external device under the condition of running with load to find the abnormal phenomenon. It is cumbersome and complicated, and it is difficult to accurately locate the real cause of the exception
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[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0036] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and / or collections thereof.
[0037] Embodiments of the present invention provide an abnorma...
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The invention discloses a method, device and a converter for detecting abnormality of a Hall sensor. The method comprises the following steps of: acquiring an output current of a converter through a Hall sensor when the converter is in a Hall self-learning mode; acquiring an absolute value of the output current to obtain a feedback current; acquiring a given current, and performing preset adjustment processing on the given current and the feedback current to generate a regulation voltage; modulating the converter according to the regulation voltage to generate an output voltage; and if the output voltage is greater a preset voltage threshold, judging that the Hall sensor has an abnormal phenomenon. The abnormality detection method can quickly detect whether the Hall sensor has abnormal phenomena before the converter runs under load, thus effectively avoiding risks.
Description
technical field [0001] The invention relates to the technical field of power electronics, in particular to an abnormal detection method and device for a converter and a Hall sensor. Background technique [0002] At present, single-phase or multi-phase DC-DC converters, inverters, frequency converters and other converter equipment are required in many applications, such as photovoltaic power supply or transmission industrial control occasions. These equipment require current and voltage control, so Hall sensors are required. Under the current technical conditions, if there are abnormal phenomena such as phase reversal or poor contact of the Hall sensor, the abnormality of the Hall sensor can only be found when the converter is running normally with load, and it is difficult to find out that the Hall sensor itself is abnormal. Problem, because there are many reasons for this abnormal phenomenon, it is necessary to check many aspects to determine the real cause of the abnormal...
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IPC IPC(8): G01R35/00
CPCG01R35/00
Inventor 陈杰凡念李忠锋桂峰张振华
Owner INVT POWER ELECTRONICS SUZHOU CO LTD