A power module for DC electromagnetic arrester

Abstract

The invention relates to a power module of a direct current electromagnetic brake, which mainly solves the technical problems that electric energy and raw materials are wasted and the motor failure is easy to appear, wherein, the technical problems exist when the direct-current electromagnetic brake adopts a single working voltage. The power module comprises a main return circuit and a control return circuit. A motor power is connected with a bridge rectifier circuit, and magnetic coils are connected to a direct current output end. A controllable silicon D2 control pole and a negative output end of the bridge rectifier circuit are connected with a relay normal open contact and a resistance R1 in parallel, wherein, the relay normal open contact is connected with the resistance R1 in series. Relay coils, a resistor R3, a resistor R4, a resistor R5, a resistor R6 and a diode D5 are connected in series one by one. A cathode of the relay coils is connected with an alternating current input end of the bridge rectifier circuit, and an anode of the diode D5 is connected with a positive output end of the bridge rectifier circuit. A capacitor C3 is connected between the cathode of the relay coils and the output end of the resistor R4 in parallel; a capacitor C2 and a resistor R7 are connected between the cathode of the relay coils and the output end of the resistor R4 in series; diodes D6, D7 and D8 are connected between the cathode of the relay coils and the output end of the resistor R4 in series. An extension line at the middle of the capacitor C2 and the resistor R7 is connected with a regulation tube D11, and then the extension line is connected with a basal pole of a dynatron. A collecting electrode is connected with the output end of the resistor R3, and an emitting electrode is connected with the cathode of the relay.

Description

Technical field: [0001] The invention relates to a power supply of an electromagnetic brake, in particular to a power supply module of a DC electromagnetic brake. Background technique: [0002] Domestic electromagnetic brakes can be divided into AC type and DC type. The old-fashioned AC electromagnetic brake is tending to be eliminated due to its shortcomings such as high failure rate, low efficiency, high energy consumption, and high noise. Compared with it, the DC electromagnetic brake has the advantages of energy saving, long life, simple production process, etc. It is the direction of development and is widely used. However, the current rectified power supply used by the DC electromagnetic brake is not reasonable. The general DC electromagnetic brake power supply only provides a constant DC working voltage. However, in the actual work of the brake, only when the power is first turned on, the electromagnetic coil needs to overcome the spring force to attract the armatu...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a DC electromagnetic brake power supply module with dual voltages that can be automatically switched, m

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