The IGBT drive control principle of new energy motor is based on the three-phase bridge converter circuit. The IGBT is an insulated-gate bipolar transistor that combines the advantages of MOSFETs and bipolar transistors with high-speed switching characteristics and high current tolerance.
The IGBT drive control principle of new energy motor mainly includes the following steps:
1. Signal input: Control the speed and torque of the motor as required, and send control signals through the controller.
2. Signal processing: The control signal is amplified and filtered by the signal processing circuit to obtain the voltage and current signals suitable for IGBT control.
3. IGBT drive: The voltage and current signals after signal processing act on the gate and emitter of IGBT respectively to control the switching state of IGBT. 4. Current control: According to the working state of the motor, the input current of the motor is controlled by controlling the time and frequency of the switch IGBT to achieve the torque and speed control of the motor.
5. Current feedback: the current situation of the motor is sensed in real time through the feedback device such as the current sensor, and the feedback signal is sent back to the controller for current closed-loop control. 6. Protection measures: In the IGBT drive control process, it is necessary to set over current, over temperature, over voltage, under voltage and other protection devices to protect the motor and IGBT.
Through the above steps, the IGBT driver can achieve accurate control of the motor according to the control signal and feedback signal, and achieve efficient and stable new energy motor drive.
IGBT (insulated gate bipolar transistor) drive control principle is to use voltage pulse and current signal control IGBT on and off, so as to achieve the drive control of the motor.