摘要:
A rotor of a rotating electrical machine is provided in which neither deterioration nor fluctuation in the cogging torque is caused and that causes neither physical enlargement nor cost increase. The rotor of a rotating electrical machine, provided with a plurality of magnetic poles 3 that are fixed on a rotor iron core 2 and arranged spaced apart from one another in the circumferential direction of the rotor iron core 2, is characterized by including a tube-shaped non-magnetic ring 4 mounted on the outer circumferential surfaces of the plurality of magnetic poles 3, and characterized in that the non-magnetic ring has a plurality of inner-diameter bulging portions 41 that abut on the corresponding outer circumferential surfaces of the plurality of magnetic poles.
摘要:
An apparatus is provided for obtaining a compact and inexpensive motor for controller integrated electric power steering apparatus capable of reducing a component for connection and the number of man-hours of assembly, and an electric power steering apparatus. A driving substrate having a power element is arranged in the side of a speed reduction mechanism of the inside of a case of a controller and a control substrate for controlling driving of the driving substrate is arranged in the side of a motor of the inside of the case and a resolver and a lead frame comprising connection wiring are arranged between a motor shaft direction of the control substrate and the driving substrate and an input-output terminal of the resolver is electrically connected to the control substrate. It is placed substantially coaxially in order of a motor, the controller and a speed reduction mechanism in the motor shaft direction.
摘要:
To obtain a permanent magnet synchronous motor suitable for an electric power steering system, in which the magnet thickness (magnet used amount) can be reduced while securing demagnetization resistance and torque characteristics. In a permanent magnet synchronous motor including a rotor in which plural permanent magnets are arranged at an outer periphery of a rotor core, which is supported so as to rotate freely, and a stator provided at the outside of the stator and having stator windings 5 and a stator core, when a gap length between the outer periphery of the permanent magnet and an internal periphery of the stator core is “L” [mm] and the thickness of the central portion of the permanent magnet in the motor rotation direction is “t” [mm], the gap length “L” and the thickness “t” is set in a range of L≦1 [mm] as well as t/(t+L)≦0.9
摘要:
Provided is a motor for an electric power steering apparatus, in which vibrations and noises are suppressed. The motor for an electric power steering apparatus includes: a motor section (1) for outputting an assist torque to a handle of a vehicle; and a controller (2) for controlling driving of the motor section (1). The motor section (1) includes: a rotor (14, 14A) having P poles; and a stator (15, 15A) provided so as to surround the rotor (14, 14A), the stator including: a stator core (23) provided with n slots formed thereon and housed in a frame (4); and three-phase stator windings (25) wound around the slots (22). The controller (2) is provided between a boss (18) and the motor section (1) so as to surround the output shaft (12).
摘要:
A permanent magnet rotating electric machine includes: a stator including: a stator core having teeth, and an armature winding wound around each of the teeth to configure the multiple phases; and a rotor including a rotor core, and permanent magnets provided in order around the rotor core. The rotor is arranged to be spaced apart from the stator with an air gap therebetween. Each of the permanent magnets has a curved surface opposed to the stator and is configured to satisfy the following relationship: 0.65 ≤ Rm × h 1 W ( h 1 + g ) ≤ 1.37 where Rm denotes a radius of curvature of the curved surface, h1 denotes a thickness of a central portion of the permanent magnet in the peripheral direction, W denotes a width of the permanent magnet in the peripheral direction, and g denotes an air gap length of the air gap.
摘要:
An electric motor and a control unit are integrally formed and are placed coaxially with a shaft of a gear box for reducing a speed of rotation of the electric motor and also the control unit is placed between the gear box and the electric motor, and a power feeding part of the electric motor is bonded to a bonding part of the control unit inside a housing or a case through an opening part disposed in the housing and/or the case 24.
摘要:
A driving-device-integral-type rotary electric machine includes a driving device 8 having a first inverter 27a and a second inverter 27b, which can supply power to stator windings 5a and 5b of the rotary electric machine 2, and the first inverter 27a and the second inverter 27b are arranged and installed in a heat sink 19, in a state where the inverters are linearly symmetrical with respect to an axis X of the rotary electric machine 2, and the heat sink is configured in such a way that at least a heat capacity of a portion with respect to the first inverter 27a is roughly equal to a heat capacity of a portion with respect to the second inverter 27b.
摘要:
In a rotary electric machine having an integrated drive control device, a motor housing joined to a mounting housing, which is a cast member, is made of a steel material. Therefore, an outer diameter is reduced and strength for retaining a stator core is satisfactorily ensured even under high-temperature environments.
摘要:
Provided is an electric drive apparatus in which a detected portion (10) of a rotation angle sensor is disposed at an end of a shaft (7) of a motor, and a sensor portion (300) as a detection portion of the rotation angle sensor is disposed coaxially with the rotating axis of the shaft. In a control unit (200), an inverter circuit portion with a drive element (SW) for driving the motor, and a control substrate (17) which is separate from the sensor portion and controls the output of the inverter circuit portion are disposed. The sensor portion and the control substrate are electrically connected, with the control substrate disposed along a plane perpendicular to the rotating axis of the shaft.
摘要:
A rotary electric machine comprising a stator body (ST in FIG. 1) which includes a winding configured of a plurality of coils (2), and a power supply section (PS) which includes conductive members (4, 5 and 6) for connecting the coils (2) to one another, and a holding member (11) for holding the conductive members (4, 5 and 6), wherein the power supply section (PS) is configured by employing the holding member (11) which is common to different connection structures such as a Y-connection and a delta connection. The rotary electric machine is advantageous in the points of the fabrication and supply of components owing to the common use of the components.