Motor power driver based on IGBT transistor

Abstract

The invention provides a motor power driver based on an IGBT transistor, which is characterized by comprising a shell (1), a CPU circuit board (2) and a driving output board (3), wherein the CPU circuit board (2) is connected with the driving output board (3) through a board level; the CPU circuit board (2) and the driving output board (3) are arranged in the shell (1); the CPU circuit board (2) can collect and analyze externally input control signals and output corresponding direction control signals and pulse signals with corresponding duty ratios, and therefore the speed of the motor is controlled; and the driving output board (3) can carry out overcurrent protection. The soft start / turn-off function is achieved, the soft start / turn-off function of the motor inductive load can be realized, suppression of the start current of the direct current motor is facilitated, the fluctuation of the direct current output voltage is reduced, and the safe service life of the power device and thedirect current motor is prolonged.

Description

technical field [0001] The present invention relates to the technical field of DC motor power drivers, in particular to a motor power driver based on IGBT tubes, in particular to a motor power driver based on IGBT tubes for realizing the soft start / shutdown function of inductive loads such as high-power DC motors . Background technique [0002] High-power DC motors are currently widely used in various industrial occasions. Since DC motors are inductive loads, during the operation of the motor, the excessive armature current of the traditional high-power motor drive will Excessive electric stress is generated, especially when the DC motor is in a short-circuit state at the moment of starting, a large current spike will be generated, and dangerous sparks may burn out the commutator and damage the winding. [0003] Prior art, such as a DC motor soft starter disclosed in patent document CN103219928A and its soft start method, it includes a current detection unit, a single-chip ...

AI Technical Summary

Problems solved by technology

[0002] High-power DC motors are currently widely used in various industrial occasions. Since DC motors are inductive loads, during the operation of the motor, the excessive armature current of the traditional high-power motor drive will Excessive electric stress is generated, especially when the DC motor is in a short-circuit state at the moment of starting, a large current peak will be generated, and dangerous sparks may burn out the commutator and damage the winding

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