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3HAC14550-1/09A

3HAC14550-1/09A

3HAC14550-1/09A

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The structure of the Silk Drum frequency conversion speed regulating system the frequency conversion speed regulating system mainly consists of the following links, system Structure Block Diagram as shown in Fig. 2: (1) The main circuit system power conversion link uses AD / DC Rectification Circuit and IGBT inverter circuit. (2) the Control Circuit Control Circuit is mainly used to receive external signals and issue control commands and PWM waveforms. (3) IGBT intelligent power module (IPM) is used in the driving circuit. (4) in order to protect the rapidity and real-time monitoring of the action, the protection circuit adopts the monitoring mode of hardware circuit and software subroutine, then the hardware circuit will immediately generate a signal, turn off the waveform generator and protect it in the interrupt subroutine, and return the program to its original state. 3 The circuit design of the frequency conversion speed regulation system adopts three-phase AC asynchronous motor to drive the wire, the speed of the motor is regulated by frequency converter with stepless speed regulation knob.

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