A kind of motor field weakening control method
A technology of field weakening control and feedforward control, which is applied in motor control, motor generator control, electronic commutation motor control, etc. It can solve the problems of difficult parameters and unsatisfactory dynamic performance, so as to improve control accuracy and improve parameter difficulty. Adjusting and improving the effect of field weakening control performance
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[0032] The invention is a voltage feedback compensation method based on feedforward control, figure 1 It is the control schematic diagram used in the motor of the present invention, figure 2 correspond figure 1 The field weakening module in is the schematic diagram of the field weakening control of the present invention, image 3 corresponds to figure 2 The fuzzy PI part in is the specific fuzzy PI control schematic diagram.
[0033] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0034] Step 1: Determine the field weakening limit voltage U according to the DC bus voltage smax .
[0035] Field weakening limit voltage U smax The theoretical value of is the maximum voltage amplitude that can be output by the inverter of the main control circuit of the permanent magnet synchronous motor, which is related to the DC bus voltage U dc related, the relation is
[0036] Step 2: Calculate the terminal ...
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