Electric appliance control power panel based on double-push electromagnet excitation starting

Abstract

The invention relates to an electric appliance control power panel based on double-push electromagnet excitation starting, which comprises a double-push electromagnet, an AC (alternating current) power supply, and a conduction suppression circuit, a transient overvoltage protection circuit and a full-bridge rectifier circuit which are sequentially connected with the AC power supply, and one path of the output end of the full-bridge rectifier circuit is connected with one coil of the double-push electromagnet; the other path is connected with the other coil of the double-push electromagnet through a full-bridge half-wave rectification circuit, the full-bridge rectification circuit is connected with a first field effect transistor and a second field effect transistor through two paths of voltage reduction sampling circuits and a filtering clamping circuit, and a third field effect transistor and a fourth field effect transistor are connected between the full-bridge rectification circuit and the full-bridge half-wave rectification circuit in parallel. The third field effect transistor and the fourth field effect transistor are respectively connected to a trigger circuit, and the trigger circuit is connected to an AC input end. Compared with the prior art, the method has the advantages that the driving energy consumption is reduced, and conducted interference source output can be inhibited.

Description

technical field [0001] The invention relates to the technical field of electrical braking, in particular to an electrical control power board based on double-push electromagnet excitation and start. Background technique [0002] An electromagnet is a power device that uses the electromagnetic effect to convert electrical energy into mechanical motion. The principle and application of brake electromagnet can be extended to all other electromagnets as force output. In the electrical braking system, the electromagnet excitation device is widely used at present. The electromagnet excitation device adopts the power board excited by the electromagnet. There are many types of the existing excitation power board, such as transformer type relay switch type, electronic However, the biggest disadvantage of the current excitation power board is that the continuous on-off isolation is too long, generally more than 1s, and it cannot suppress the output of the conducted interference sourc...

AI Technical Summary

Problems solved by technology

In the electrical braking system, the electromagnet excitation device is widely used at present. The electromagnet excitation device adopts the power board activated by the electromagnet. There are many types of existing excitation power boards, such as transformer type relay switch type, electronic Circuit combination type, etc. However, the biggest shortcoming of the current excitation power board is that the continuous on-off isolation is too long, generally greater than 1s, and cannot suppress the output of the conducted interference source

In addition, for the impact of the external environment, the resistance used by the power board will generate heat and affect the life when it bears the high voltage of AC220V±20%, which increases the temperature rise of the circuit board, resulting in the long-term failure of the high voltage of AC220V±20%. work etc.

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