Contact anti-sticking control method, storage medium, control device and relay

Abstract

The invention discloses a contact anti-adhesion control method, a storage medium, a control device and a relay. The invention solves the problem that the contact sticks to each other due to the high-energy arc striking for many times when the electric control device is switched on and off. The technical scheme mainly comprises the following steps: the operation time of the electric control deviceis tested to obtain the operation time information of the switching on and off; Obtaining the occurrence time of the alternating current zero crossing point, defining the obtained zero crossing pointas the first zero crossing point and the corresponding occurrence time as the first occurrence time information, and estimating the occurrence time information of the zero crossing point after the first zero crossing point according to the first occurrence time information; If the switching-on condition or switching-off condition is met, According to the occurrence time information of the currentzero-crossing point as a reference, the closing operation is started with the preset closing operation time information in advance or the opening operation time information in advance. The invention can ensure that only small-energy arc striking occurs in the separating and closing processes of the electric control device, so that the service life is prolonged.

Description

technical field [0001] The invention relates to the technology in the field of contact anti-adhesion, in particular to a control method, a storage medium, a control device and a relay for contact anti-adhesion. Background technique [0002] Relay (English name: relay) is an electrical control device, which is an electrical appliance that causes the controlled quantity to undergo a predetermined step change in the electrical output circuit when the change of the input quantity (excitation quantity) meets the specified requirements. It has an interactive relationship between the control system (also known as the input loop) and the controlled system (also known as the output loop). Usually used in automatic control circuits, it is actually an "automatic switch" that uses a small current to control the operation of a large current. Therefore, it plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit. [0003] When the existing load is...

AI Technical Summary

Problems solved by technology

The mains power is generally alternating current, and in today's power consumption environment, if the time of relay closing or opening is not controlled, the relay loss rate is very high; if the time node of relay closing or opening is in the current waveform of alternating current Near the peak value of the relay, the energy of the arc generated by the relay is huge. It only needs to occur a few times, and the two contacts of the relay will stick together, causing damage to the relay.

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