“doubly-fed”造句，怎麼用doubly-fed造句

The system is doubly-fed generator rotor side converter control circuit, although not perfect, there must be reference value.

This is a doubly-fed machine no-load cases, the rotor side converter control circuit.

It is necessary to establish VSCF doubly-fed wind power physical simulation system in the laboratory, as the actual wind experiment research is expensive and time-consuming.