METHOD OF ELECTROMAGNET ACTUATION PARAMETERS DETERMINATION AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2025 - IPC H01F7/18 F16K31/02 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used to control electromagnets (EM) and contactors. Method of electromagnet actuation parameters determination is based on analysis of transient process of current change in its winding after supply voltage to it, including monitoring of local maximum and local minimum of current in winding at actuation and generation of signal testifying to actuation of electromagnet. To determine the EM actuation moment, a measuring interval is formed, the beginning of which is set after reaching the local maximum by the signal corresponding to the current value in the EM winding, and guaranteed until this signal reaches the local minimum in any allowable EM operating conditions. End of the measurement interval is set after reaching a local minimum by a signal corresponding to the current value in the EM winding, with a delay sufficient to maintain the value of the measured local minimum. At that, formation of a signal indicating EM operation is carried out at the moment of reaching a local minimum, which is fixed, when on the measuring interval the signal level drop corresponding to the value of current in the EM winding is replaced by its increase, and the value of the local minimum is stored until the end of the measurement interval. When supply voltage is removed from the EM winding, the signal indicating EM operation is reset to zero.

EFFECT: expansion of functional capabilities and increase of noise immunity at determination of EM actuation parameters.

7 cl, 7 dwg