说明：  PSCAD，DC-AC-DC直流变压器，中间为100Hz高频变压器，一边实现Vf控制，另一边实现UdcQ控制。先在PSCAD中加载dqo_new_lib.psl后再加载DC_AC_DC_100Hz.psc。
(PSCAD, DC-AC-DC DC transformer, the middle of 100Hz high-frequency transformer, while the realization of Vf control, the other side to achieve UdcQ control. First load dqo_new_lib.psl in PSCAD and then load DC_AC_DC_100Hz.psc.)