Power supply open-phase detection method and device, storage medium and electric appliance
A technology of power supply phase loss and detection method, which is applied in the field of control, can solve the problems of high cost, achieve the effect of improving reliability, reducing cost and improving operation reliability
Active Publication Date: 2021-02-02
GREE ELECTRIC APPLIANCES INC
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[0003] The main purpose of the present invention is to overcome the defects of the above-mentioned prior art, and provide a power supply phase loss detection method, device, storage medium and electrical appliance to solve the problem of using phase sequence protectors, hardware detection circuits, etc. for power supply phase loss detection in the prior art. high cost problem
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[0035] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only 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 noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embo...
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The invention provides a power supply open-phase detection method and device, a storage medium and an electric appliance. The method comprises the following steps of sampling an input voltage of a power supply within a preset sampling time, averaging the sampled input voltage sampling values to obtain an average sampling value of the input voltage, determining whether a voltage fluctuation periodexists or not according to the sampled input voltage sampling value and the average sampling value, and if the voltage fluctuation period is determined to exist, determining whether the power supply is open-phase according to a comparison result of the input voltage sampling value sampled each time and the average sampling value. According to the scheme provided by the invention, the abnormality of the input voltage can be detected through a software algorithm, and the cost is reduced.
Description
technical field [0001] The invention relates to the field of control, in particular to a power supply phase loss detection method, device, storage medium and electric appliance. Background technique [0002] The lack of phase of the power supply will cause the current to have a large impact on the electrolytic capacitor on the controller, which will cause damage to the electrolytic capacitor and cement resistor for a long time. Existing phase-sequence protectors, hardware detection circuits, etc. are commonly used for phase loss detection of power supplies, which are expensive and occupy a large space in the electric control box. Contents of the invention [0003] The main purpose of the present invention is to overcome the defects of the above-mentioned prior art, and provide a power supply phase loss detection method, device, storage medium and electrical appliance to solve the problem of using phase sequence protectors, hardware detection circuits, etc. for power supply...
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Login to View More IPC IPC(8): G01R29/16G01R19/00G01R19/25
CPCG01R29/16G01R19/003G01R19/2506G01R19/2509
Inventor 陈万兴梅正茂周姝含段成杰李赛
Owner GREE ELECTRIC APPLIANCES INC