Intelligent motor control protector

Abstract

The invention discloses an intelligent motor control protector which comprises a microcontroller, a power supply module, a reset circuit and an RS485 communication circuit. The input end of the microcontroller is connected to a Hall sensor circuit, a voltage acquisition module, a data acquisition module, a three-phase phase sequence detection circuit, a temperature sampling circuit, an operation screen circuit and an anti-interference circuit. The output end of the microcontroller is connected to a voice output module, a relay operation module and a control indication lamp. The voltage acquisition module comprises a phase voltage detection circuit and a voltage conditioning circuit. The current acquisition module comprises a phase current detection circuit and a surge protection circuit. The voice output module comprises a power amplifying circuit and a loudspeaker reminding circuit. The relay operation module comprises a relay protection circuit and a motor module. The intelligent motor control protector has the advantages of novel design, simple structure, complete function and strong practicability, and a three-phase motor is protected through detecting voltage, current, temperature, phase sequence and bearing position information.

Description

technical field [0001] The invention belongs to the technical field of three-phase motor detection and protection, and in particular relates to an intelligent motor control protector. Background technique [0002] As a device that converts electrical energy into mechanical energy, the motor is used in all aspects of our life. It provides various conveniences for our life. Due to the importance of the motor, the control and protection of the motor should also be very comprehensive. Only in this way can we not affect our normal life. However, because the working environment of the motor is different, the working nature is also different. In some special occasions, the ambient temperature of the motor is high or the ambient temperature is high due to high-speed running friction, resulting in damage to the motor. In addition, due to the unstable factors of voltage and current, too large or too small voltage and current will cause the motor to work unstable, which cannot guarante...

AI Technical Summary

Problems solved by technology

[0002] As a device that converts electrical energy into mechanical energy, the motor is used in all aspects of our life. It provides various conveniences for our life. Due to the importance of the motor, the control and protection of the motor should also be very comprehensive. Only in this way can we not affect our normal life. However, because the working environment of the motor is different, the working nature is also different. In some special occasions, the ambient temperature of the motor is high or the ambient temperature is high due to high-speed running friction, resulting in damage to the motor. In addition, due to the unstable factors of voltage and current, too large or too small voltage and current will cause the motor to work unstable, which cannot guarantee the smooth and safe operation of the motor, which will affect our normal life and may also cause human and financial losses. There is no anti-interference circuit in the place where the motor control requires high precision. When there is a certain signal interference, it affects the precise control of the motor control system, which in turn affects the working efficiency of the entire working system and cannot meet the requirements, which has a greater impact

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