An active thermal control method for an electric vehicle controller and its application system
A technology for electric vehicles and controllers, applied in electric vehicles, control drives, motors, etc., can solve the problem of conservative output capability of power devices, and achieve the effects of reducing the probability of device failure, smoothing temperature fluctuations, and strong robustness.
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[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0024] According to the active thermal control method of an electric vehicle controller according to the present invention, the steps of the control method are as follows:
[0025] Step 1, DSP28035 processor 3 outputs 6 channels of PWM voltage drive signals according to the real-time feedback signals of temperature acquisition circuit 5, current acquisition circuit 6, and voltage acquisition circuit 7, and the power of the drive signal is amplified by drive circuit 4, and output to the three-phase Inverter 22;
[0026] Step 2, the Clark transformation 28 and the Park transformation 27 in the motor vector control system 2 convert the two-phase stator current ia, ib of the asynchronous motor 21 into the current iq, id under the two-phase rotating coordinate system; the flux linkage observer 26 according to iq , id and the speed n of the asynchronous motor 21 c...
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