励磁变压器的串联电抗恶化了晶闸管的换相工作条件，并在晶闸管元件导通与关断瞬间引起危及到转子励磁绕组安全运行的过电压。
In addition, equivalent series reactance of excitation transformer worsens the condition of the thyristor operation, and it can bring transient over-voltage at the moment of switching thyristor.
反应式步进驱动电机的转子无绕组，由被励磁的定子绕组产生反应力矩实现步进运行。
Reactive stepping motor rotor windings without, the excitation of stator winding respond to realize stepping operation torque.
反应式步进驱动电机的转子无绕组，由被励磁的定子绕组产生反应力矩实现步进运行。
Reactive stepping motor rotor windings without, the excitation of the stator winding reacts to achieve step operating torque.
应用推荐