DC separately excited motor commutation circuit

Published:2012/9/13 22:34:00 Author:Ecco | Keyword: DC separately excited , motor , commutation | From:SeekIC

Therotation direction of the DC motor is determined by the direction of current in the field and windings, the field direction of the magnetic field is determined by the direction of excitation windingcurrent. In the diagram (a), switching switch SA can change the positive and negative electrode connection of excitation coil (winding) L, while the polarity of the power keeps constant, it can change the rotation direction of the motor. In the diagram (b), it can use SA to change the polarity of power's two ends, and the polarity of the magnetic coil keeps constant, and it can also achieve reversible steering. If the polarity of the excitation coil and the power is changed at the same time, the direction of generated magnetic field will not change, so the direction of rotation will maintain.



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