An electromagnetic lock working power reduction circuit

Abstract

The invention discloses an electromagnetic lock working power reduction circuit, which includes an oscillation circuit, a timing circuit and a chopper circuit; a busbar power supply is connected to the chopper circuit, the chopper circuit is connected to the electromagnetic lock, and the oscillation circuit and the timing circuit are driven by voltage divider from the busbar power supply The oscillation circuit generates two PWM waves successively, and the first PWM wave is sent to the timing circuit. After the timing reaches the set time, the timing circuit sends the start command of the second PWM wave to the oscillation circuit; the oscillation circuit sends the second PWM wave to the timing circuit. The wave is sent to the chopper circuit, so that the DC power supply waveform output before the chopper circuit becomes a PWM waveform; the current at the input terminal of the electromagnetic lock forms a pulsed square wave; whenever the square wave of the power input is turned off, the electromagnetic lock will use its magnetic material. The stored energy is released to maintain its own work; the invention can not only meet the requirement of high power input when the electromagnetic lock is started, but also reduce the maintenance power after the electromagnetic lock is started.

Description

technical field

[0001] The invention belongs to the technical field of space electronic equipment, and in particular relates to an electromagnetic lock working power reduction circuit. Background technique

[0002] Nuclear energy applications will play an increasingly important role in future deep space exploration missions. The safety rod driving mechanism is the key equipment of the space nuclear energy application system and the driving mechanism of the reactor safety rod system. The movement is transmitted from the initial position to the final position, and the compression spring matched with the rack is compressed to the working stroke. At this time, the electromagnetic lock is energized, the clutch is de-energized, and the rack head of the mechanism is locked, and the locked state is maintained for a long time to ensure the normal operation of the reactor. At the end of the reactor life or in an accident state, the electromagnetic lock is de-energized and the reactor...

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