초록 ▼

An electrical machine utilizes a consequent pole rotor with a polyphase stator assembly and a control coil to produce a widely variable voltage output. Either constant-speed－variable-voltage performance, or variable-speed－constant-voltage performance may be easily achieved by varying the magnitude a

An electrical machine utilizes a consequent pole rotor with a polyphase stator assembly and a control coil to produce a widely variable voltage output. Either constant-speed－variable-voltage performance, or variable-speed－constant-voltage performance may be easily achieved by varying the magnitude and level of D.C. current supplied to the control coil. Single and double rotor embodiments are disclosed, with cogging being easily suppressible in the double rotor embodiments.

대표청구항 ▼

An electrical machine, comprising: a rotor having a plurality of poles, said poles including alternate high reluctance permanent magnet poles and low reluctance consequent ferromagnetic poles; a stator assembly having a polyphase winding thereon; a control coil mounted on said stator assembly for ge

An electrical machine, comprising: a rotor having a plurality of poles, said poles including alternate high reluctance permanent magnet poles and low reluctance consequent ferromagnetic poles; a stator assembly having a polyphase winding thereon; a control coil mounted on said stator assembly for generating a control flux proportional to direct current supplied to said control coil, said control flux entering the stator assembly over the entire axial length thereof; and a ferromagnetic frame for completing the path of said control flux generated by said control coil.