METHOD FOR REGULATING THE RESPONSE TIME OF AN ELECTROMAGNET AND A DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2022 - IPC H01F7/18 H02P13/00 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, can be used to control the drive electromagnets (EM) of valves and switching devices and is mainly used in solving the problem of simultaneous control of several switching devices or valves when it is important to ensure their synchronous operation. Pulse-width modulation of the voltage supplied to the EM winding is used to regulate the EM response time, and the value of the duty cycle of the voltage pulses supplied to the winding is used as a parameter of the power supply circuit affecting the response time. The change in the duty cycle of the voltage pulses before each new cycle of activation is performed automatically until the time of activation of the electromagnet reaches the set value with the required accuracy, and the deviation of the current value of the response time from the set value is checked before each new cycle of operation. The new value of the duty cycle of the voltage pulses supplied to the EM winding constant at the activation cycle, during its subsequent activation is selected based on the duty cycle value taken at the previous cycle, the measured deviation of the current value of the response time from the set value and the coefficient characterizing the effect of the change in the duty cycle value on the response time value. The value of the response time at each current EM activation cycle is determined as the value of the time interval between the supply voltage to the winding and the moment when the current in the winding reaches a local minimum when the EM is activated.

EFFECT: increase in the reliability and simplifying the device.

6 cl, 10 dwg