Since HSY requires dc magnetic field, an exciter with control circuitry is needed in addition to the conventional PMSY drive unit when employed as a motor.
HSY作为电动机使用时，由于需要直流磁场，与普通pmsy的驱动单元相比，应额外增加一个励磁电路。
2
Then, introduces about DSP , which is the basis knowledge of next design Based on DSP excitercontrol devices .
然后，介绍了DSP的基础知识，为下一步进行设计基于DSP的励磁控制装置做好准备。
3
In order to assure operating properly in phase lead, the low exciting limit unit in the excitercontrol system should not only be put into operation as equirement but also be adjusted correctly.