A novel transient rotor current control scheme of a doubly-fed induction generator equipped with superconducting magnetic energy storage for voltage and frequency support

Shen Yang-Wu^a), Ke De-Ping†^a), Sun Yuan-Zhang^a), Daniel Kirschen^b), Wang Yi-Shen^b), Hu Yuan-Chao^a)

Operating modes of the superconducting coil. (a) Charging, (b) discharging. Here, V _sm and i _sm are the voltage and current of SMES inductance, respectively.