DC Motor Turning change link should pay attention to what?
DC Motor to change the shift, there are two methods, one is the armature current direction remains unchanged, to change the direction of excitation current, due to excitation winding turns and more at the moment to change the current direction will produce a high self-induction electromotive force, which may lead winding inter-turn breakdown. Therefore, use less. Common way is to change the direction of excitation current to change the direction of armature current. For the plot with a string of re-Lai Lai and stability of the motor windings, no matter what method you use to change the motor turning, series excitation windings and excitation windings of the current direction should be the same. Otherwise, the same load may increase the speed back down.
Keywords: DC Motor