The above principle suggests that the gap flux and the voltage induced in armature winding of HSY can be controlled adequately and continuously by varying dc field current.
上述原理表明，通过改变直流励磁电流，可以连续地控制HSY 的气隙磁通和绕组感应电压。
2
There is however a gap in the magnetic circuit between the pole piece and armature so a force is created which ACTS to close this gap and complete the magnetic circuit.