Three-phase AC servo hub motor for electric vehicles
A technology of three-phase AC and in-wheel motors, which is applied in electric vehicles, motors, vehicle components, etc., can solve the problems of large fluctuations in motor starting torque, hindering in-wheel motors, and insufficient driving torque, and achieves good robustness and control Simple, compact effect
Inactive Publication Date: 2019-10-01
SHAANXI UNIV OF TECH
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Problems solved by technology
However, the permanent magnets of existing in-wheel motors are installed on the rotor, the armature windings are arranged in the stator, and the starting torque of the motor fluctuates greatly, the speed regulation range is narrow, the control is difficult, and the driving torque is insufficient, which hinders the application of in-wheel motors and their drive technology.
Moreover, these existing vehicle hub motors mostly adopt DC control, and the common disadvantages of DC hub motors are that they are relatively large in size and heavy in weight.
Method used
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Embodiment Construction
[0021] The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing:
[0022] Such as figure 1 and figure 2 , a three-phase AC servo hub motor for an electric vehicle, comprising a rotor 1, a rotor salient pole 1-1, a threaded hole 1-2, a bearing seat 1-3, a stator 2, a connecting hole 2-1, and a stator salient pole 2- 2. Bolt hole 2-3, stator keyway 2-4, one-sided stator 2-5, shaft 3, retaining ring groove 3-1, keyway 3-2, shaft shoulder 3-3, cover plate 4, convex teeth 4- 1. Retaining ring 5, armature winding 6, bearing 7, fastening bolt 8, permanent magnet 9; stator 2 is fixed on shaft shoulder 3-3 through keys, and retaining ring 5 is installed on shaft shoulder 3-3 through circlip pliers The retaining ring groove 3-1 is used to limit the axial movement of the key along the shaft 3. The rotor 1 arranged axially on both sides of the stator 2 is supported on both ends of the shaft 3 through the bearing 7. The end s...
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The invention belongs to the technical field of motors, and specifically relates to a three-phase AC servo wheel hub motor for electric vehicles. The motor is composed of a stator, a rotor, a shaft, a cover plate, armature windings, and permanent magnets. Both the stator and the rotor are of a salient pole structure. Both the permanent magnets and the armature windings are arranged on the stator. The stator salient poles are of a U-shaped slot structure, the permanent magnets are embedded into the U-shaped slots, and the armature windings are arranged around the stator salient poles. The cover plate compresses the permanent magnets embedded into the stator salient poles and the armature windings arranged around the stator salient poles through bolts. The stator is fixedly connected with the shaft through keys. Retainer rings are installed at the two sides of key slots to limit the axial movement of the stator. The rotor is supported on the shaft by bearings, and is connected with a wheel hub by bolts. The motor works based on the principle of magnetic flux axial switching. The permanent magnets are magnetized along the circumferential directions of the stator and the rotor. Magnetic flux formed by the permanent magnets and magnetic flux formed by the armature windings are distributed in parallel and do not interfere with each other. The wheel hub motor has good fault tolerance, and has the advantages of compact structure, large output torque, easy control, good robustness, simple manufacturing process, low cost, and convenient installation.
Description
technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a three-phase AC servo hub motor for an electric vehicle. The permanent magnets and armature windings of the motor are arranged on the stator, and the stator and the rotor are double-salient pole hub motors. Background technique [0002] With the development of the automobile industry and the shortage of oil resources, electric vehicles, which replace internal combustion vehicles fueled by gasoline and diesel, are ushering in opportunities for development. The driving technology of electric vehicles is very different from that of traditional internal combustion engine vehicles. Electric vehicles use renewable electric energy as the energy source and have the outstanding advantage of zero emissions. It is one of the future development directions of the automobile industry. As the core component of electric vehicles, the performance of drive motor directly affects the ov...
Claims
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IPC IPC(8): H02K1/14H02K1/24H02K1/17
CPCH02K1/14H02K1/17H02K1/24Y02T10/64
Inventor 赵永强柴新宁孙允璞
Owner SHAANXI UNIV OF TECH