摘要:
In an armature coil according to the present invention and, more particularly, in an armature coil including a plurality of coil conductors wound around a plurality of slots which are formed in a stator core and opened on the radially inner side, the circumferential width of the plurality of the coil conductors is formed in a substantially trapezoidal shape which gets narrower toward the radially inner side and the cross-sectional areas of the plurality of the coil conductors in the slot are each substantially the same and the circumferential width thereof is formed narrower as the coil conductor is arranged toward the radially inner side; and one coil conductor is formed in a convex shape and another coil conductor is formed in a concave shape along the convex shape.
摘要:
To obtain a permanent magnet type motor capable of securing controllability of a motor and utilizing reluctance torque. An armature winding (12) is a plurality of sets of polyphase windings; the plurality of sets of the armature winding (12) is supplied with current from each individual inverter; the rotor core (18) is provided with permanent magnets (19) on a surface portion thereof, the permanent magnets (19) being circumferentially arranged and the adjacent permanent magnets (19) having polarities opposite to each other; a protrusion portion (46) is provided between the adjacent permanent magnets (19), the protrusion portion (46) being provided in a protruding condition from the rotor core (18) and being made of a magnetic substance; and a non-magnetic gap portion (47) is interposed between the protrusion portion (46) and the permanent magnet (19) in a rotating shaft direction.
摘要:
Provided is a stator core (11) composing a stator (10) for a rotating electrical machine and including: an annular yoke portion (11b); a tooth group (11a) fitted to an inner side of the annular yoke portion (11b) and formed such that both ends in a circumferential direction on an inner circumferential side of adjacent teeth (11a2) are integrally connected with each other by a thin connection portion (11a1); and a slot for accommodating a stator winding (12). The annular yoke portion (11b) has grooves (11b1) provided at regular intervals in an inner circumferential surface thereof and extending in an axial direction of the stator (10), the grooves (11b1) each having a V shape such that a cross section thereof perpendicular to the axial direction opens toward an inner side of the stator core (11). Each tooth (11a2) of the tooth group (11a) has, at an outer-circumferential-side end thereof, a fitting portion (11a3) whose cross section perpendicular to the axial direction is formed in a wedge shape so as to allow the tooth (11a2) to be fitted along the corresponding groove.
摘要:
A stator core (2) includes an inner ring core (3) composed of a plurality of teeth (6) arranged in the circumferential direction and a connection portion (7) connecting inner circumferential portions of the plurality of teeth (6); and an outer ring core (4) to be joined to an outer circumferential surface of the inner ring core (3). Slots (5) of the stator core (2) each have a circumferential direction width (a) on an inner circumference side smaller than a circumferential direction width (b) on an outer circumference side. A stator coil (10) composed of conductive coils (11) including a plurality of slot accommodated portions (12) and a plurality of coil end portions (13) connecting the slot accommodated portions (12) is inserted and placed in the slots (5) from an outer side in the radial direction of the inner ring core (3).
摘要:
A multiple-polyphase AC dynamo-electric machine having a stator core having a plurality of magnetic teeth, an armature winding containing the multiple polyphase winding group winded around the teeth, a rotor that is relatively positioned to the armature through the magnetic air gap, wherein each of the plurality of the teeth provides the flange part to the NS magnetic pole part of the rotor side end part, the stator core has a magnetic connection part which connects the flange parts adjoined each other in the NS magnetic pole of each of the plurality of teeth, the connection part is provided corresponding to each of the slot and an inner peripheral side of the corresponding slot, the radial width of the connection part are smaller than both of the circumferential width of the teeth, thereby the radial widths of the connecting sections are smaller than both the circumferential widths of the teeth and the radial widths of the flanges, voltages generated when the magnetic flux generated by current flowing through one group of windings links with the windings in another group are suppressed effectively.