At present, permanent magnet synchronous motor as the mainstream power unit of the industrial sewing machine is rapidly occupying most of the market, permanent magnet synchronous motor compared with the traditional clutch motor has the advantages of small size, good dynamic performance, easy control, high power density and so on. The basic control process is as follows: DSP determines the current position of the rotor and calculates the current speed of the motor according to the captured Hall position signal, and calculates the effective value of each PWM output channel through the vector control algorithm and PID algorithm. The output PWM is turned on by the driver chip to open the responsive IGBT, so that the corresponding winding of the motor passes the current, and the motor continuously rotates in the given direction.

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600V-650V IGBT：ID=15A-80A