Patent ID: 6348750
Filing Date: 2002-02-19
Classification: H02K

Abstract:
An alternator comprising:a case; a rotor disposed inside said case, north-seeking and south-seeking poles being formed alternately around a rotational circumference of said rotor; and a stator having a stator core surrounding said rotor, and a polyphase stator winding installed in said stator core, a number of slots extending in an axial direction being formed in said stator core at a predetermined pitch in a circumferential direction, each phase of stator winding portion in said polyphase stator winding being formed in a number of turns by electrically connecting in series a number of winding sub-portions each constructed substantially in one lap such that a wire forms coil ends which bend outside said slots at end surfaces of said stator core, and alternates between inner layers and outer layers in a slot depth direction within said slots at intervals of a predetermined number of said slots, (nâˆ’1) turns of said wire being housed in a slot housing a first end portion of said stator winding portion connected to a lead wire and a slot housing a second end portion of said stator winding portion connected to a neutral point lead wire, and n turns of wire being housed in other slots, said winding sub-portions being directly and continually connected to each other in series within said slots, wherein n is a whole number integer.