Variable speed wind turbine generator

Variable speed wind turbine generator

Variable speed wind turbine having a passive grid side...

Variable speed wind turbine having an exciter machine and a...

Variable speed, constant frequency induction generator system

Variable speed, variable motion, electrically operated...

Variable speed/variable voltage generator set

Variable time ratio control having power switch which does...

Variable time ratio control having speed potentiometer...

Variable timing circuit for motive power battery chargers

Variable transformer hydro cost reducer (universal)

Variable trip fault indicator

Variable voltage direct current power supply and motor speed...

Variable voltage resilient connecting rod drive

Variable voltage supply system

Variable-flux motor drive system

Variable-frequency drive with regeneration capability

Variable-speed electrical machines

Variable-speed generator/motor system

Variable-speed power generating system