Inventor
SUGISAKA HIROSHI
JP4 patents
Patents
4 patentsUS4812729AMar 14, 1989
Protecting apparatus for secondary excitation type variable speed AC generator/motor
HITACHI LTD64 citations94
US4766360AAug 23, 1988
Induction generator/motor system
HITACHI LTD9 citations72
US4742288AMay 3, 1988
Control system for AC motor/generator of secondary AC excitation type
HITACHI LTD18 citations70
US4743826AMay 10, 1988
Pumping-up generator/motor system and method of operation of the same
HITACHI LTD4 citations60