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Phase sequence detection device and phase sequence detection method

A phase sequence detection and phase sequence technology, which is applied in the direction of phase sequence/synchronization indication, multi-phase network asymmetry measurement, etc., can solve problems such as low reliability, poor grid adaptability, complex circuits, etc., and achieve the effect of convenient solution

Active Publication Date: 2018-07-20
ZHEJIANG HOLIP ELECTRONICS TECH
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Problems solved by technology

However, this kind of circuit is usually more complex, with narrow application voltage range, poor grid adaptability (for example, it can only be used at 50Hz), more components are used, and low reliability

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  • Phase sequence detection device and phase sequence detection method
  • Phase sequence detection device and phase sequence detection method
  • Phase sequence detection device and phase sequence detection method

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Embodiment Construction

[0025] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. It should be understood, however, that these descriptions are exemplary only, and are not intended to limit the scope of the present disclosure. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present disclosure.

[0026] The terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting of the present disclosure. The words "a", "an" and "the" used herein shall also include the meanings of "plurality" and "multiple", unless the context clearly indicates otherwise. In addition, the terms "comprising", "comprising", etc. used herein indicate the existence of stated features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or compo...

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Abstract

The invention provides a phase sequence detection device and a phase sequence detection method. According to the embodiment of the invention, the phase sequence detection device comprises a waveform detection circuit for detecting respective waveforms of the line voltage of the first phase relative to the second phase and the line voltage of the second phase relative to the third phase of three-phase alternating-current power, and a signal processor which is used for detecting the phase sequence of the alternating current power or the occurrence of phase loss fault according to the time interval between the waveforms detected by the waveform detection circuit. According to the embodiment of the invention, the phase sequence detection can be conveniently, effectively and reliably realized through a software and hardware combination mode.

Description

technical field [0001] The present disclosure generally relates to power electronics technology, and more particularly, relates to a phase sequence detection device and a phase sequence detection method. Background technique [0002] Many electrical devices, such as frequency converters, need phase detection to prevent phase loss and determine phase sequence. Currently, hardware circuits are usually used for phase detection. However, this kind of circuit is usually relatively complex, with a narrow application voltage range, poor adaptability to the power grid (for example, it can only be used at 50 Hz), many components are used, and the reliability is low. Contents of the invention [0003] In view of this, an object of the present disclosure is at least partially to provide a phase sequence detection device and a phase sequence detection method, so as to at least partially suppress or solve the above problems. [0004] According to one aspect of the present disclosure,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/18G01R29/16
CPCG01R29/16G01R29/18
Inventor 陈惠军谭瑞民袁涛
Owner ZHEJIANG HOLIP ELECTRONICS TECH
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