Control system and method with three direct-current motors in forward-direction serial connection
A DC motor, series control technology, applied in the control system, motor speed or torque control, electrical components, etc., can solve the problems of imperfect performance, many functional modules, expensive prices, etc., to save costs and improve Economical, easy-to-control effects
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[0044] See figure 1 , The present invention is a three DC motor forward series control system, three DC motors are connected in positive series, the voltage of the three DC motors is adjusted in a steady state, the voltage is synthesized in a reference voltage synthesizer, and the output voltage waveform Perform PWM pulse adjustment to obtain the PWM duty cycle, compare the working voltage of the DC motor with the DC power supply, and realize the four-quadrant control of the three DC motor.
[0045] Including 8 IGBT modules, DC power supply, three DC motors A, B, C, and 8 IGBT modules, which are connected in series in pairs to form four bridge arms in parallel at both ends of the DC power supply. Three DC motors A, B , C is connected to the reference voltage synthesizer through the two-stage PI controller through the corresponding coupled inductance element in turn through the speed sensor, current sensor and speed adjustment module. The reference voltage synthesizer is connected ...
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