Electric vehicle brushless motor controller
A brushless motor and controller technology, applied in the direction of single motor speed/torque control, etc., can solve the problems of large motor noise, small improvement in speed increase range, low cost performance, etc., to achieve improved service life, comfortable riding, and The effect of high operating efficiency
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[0021] Such as figure 1 As shown, the brushless motor controller for electric vehicles includes an error detector 1, an SVPWM motor vector controller 3, a PI control unit 2, and a field weakening angle sampling unit, a current sampling unit, and a rotation speed sampling unit 5. The PI control unit 2 The output is connected to the input of SVPWM motor vector controller 3, and the output of SVPWM motor vector controller 3 is connected to motor 4. SVPWM motor vector controller 3 is equipped with field weakening angle and current feedback to form an internal closed-loop control. The output of motor speed sampling unit 5 and The handle signal is connected with the error detector 1 to form a speed external closed-loop control, where the current sampling element in the current sampling unit is a copper wire. The schematic diagram is as follows figure 2 As shown, the rotational speed sampling element is a HALL sensor. The SVPWM motor vector controller 3 is based on the microprocessor ...
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