Zero-sequence-current suppressing winding open type permanent magnet synchronous motor vector control method
A permanent magnet synchronous motor, zero-sequence current technology, applied in the direction of motor generator control, electronic commutation motor control, vector control system, etc., can solve the problem that the inverter voltage output capacity is not fully utilized, affecting the stability and operation of the motor Efficiency, not in line with the compact layout of electric vehicles, etc., to achieve the effect of improving voltage utilization, reducing losses, and prolonging service life
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[0025] figure 1 A permanent magnet synchronous motor vector control drive system with open winding structure for electric vehicles with zero-sequence current suppression, including a controller 7 and two identical two-level inverters 3, 4, two identical two-level inverters Devices 3 and 4 both have a three-leg structure, and each bridge arm is composed of two IGBT switching devices (V 11 , V 13 , V 15 , V 14 , V 16 , V 12 , V 21 , V 23 , V 25 , V 24 , V 26 , V 22 ) and reverse diodes (D 11 、D 13 、D 15 、D 14 、D 16 、D 12 、D 21 、D 23 、D 25 、D 24 、D 26 、D 22 )composition. The two two-level inverters 3 and 4 are simultaneously powered by a DC power supply 5 , and electrolytic capacitors 6 are connected in parallel at both ends of the DC power supply 5 . The neutral point of the winding of the permanent magnet synchronous motor 1 is opened, leading to 6 output terminals respectively a, b, c, a', b', c'; aa', bb', cc' are the permanent magnet synchronous motor...
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