Three-phase electric phase sequence and phase loss detection device and method for electric mechanism

Abstract

The invention provides a three-phase electric phase sequence and phase loss detection device and method for an electric mechanism. The detection device comprises a power module, a sampling circuit module, a micro-controller and a state output module; the sampling circuit module comprises a rectifying circuit, an isolating circuit and a filtering circuit; the micro-controller is an 8-bit CMOS micro-controller Attiny 13A low in power consumption and is manufactured by an Atmel company; the micro-controller is combined with a simple and efficient three-phase power supply detection circuit for rectification, isolation and filtering processing, and an efficient program algorithm can be adopted for precisely and quickly determining a phase sequence and determining whether there is phase loss ornot. According to the method, the defects that the anti-interference performance of traditional circuit detection methods is poor, customization cannot be achieved, circuits are complicated and the failure rate is high are overcome; an electric actuating mechanism is better protected.

Description

Technical field [0001] The present invention relates to the technical field of power systems, in particular to a detection device and method for three-phase electrical phase sequence and phase loss for an electric mechanism. Background technique [0002] The electric actuator is an important driving device in the process control system, which is widely used in electric power, steel, petroleum, water treatment, chemical, metallurgy and other industries. The temperature, pressure, flow and other parameters in industrial pipelines are often adjusted by controlling the opening of the valve. In the process of use, due to various factors, the phase sequence of the on-site power supply will be changed. The change of the phase sequence will cause the direction of the electric actuator motor to run incorrectly, causing immeasurable consequences. If there is a lack of phase in the three-phase power supply, the electric actuator still receives the switch signal to control the operation of ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the existing problems, the purpose of the present invention is to provide a three-phase electrical phase sequence and phase loss detection device and method for electric mechanisms, which can accurately and quickly determine the phase sequence and whether there is a phase loss, and effectively improve the anti-interference performance. It can be customized freely according to actual needs, avoiding the problem of high failure rate caused by complex circuits

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