Rotating electrical machine
A technology of rotating electrical machines and rotating shafts, applied to synchronous motors with stationary armatures and rotating magnets, electromechanical devices, electrical components, etc. The effect of reducing the magnetic flux and weakening the magnetic flux
Active Publication Date: 2014-12-10
AISIN AW CO LTD +1
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Problems solved by technology
[0008] Based on this request, the present applicant conducted intensive research. As a result, in the above-mentioned embedded magnet synchronous motor, a space (air gap) is formed around the permanent magnet embedded in the rotor. If the distance between the permanent magnet and the space is properly specified, If there is a relationship, the motor loss can be further reduced. Focusing on this, for the embedded magnet synchronous motor, although there is a structure in which a space is formed around the permanent magnet in terms of structure, the relationship between the permanent magnet and the space is not specified.
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[0037] Below, based on Figure 1 to Figure 13 Embodiments of the rotating electric machine according to the present invention will be described. In addition, in the embodiments described below, an example in which the present invention is used as a motor generator (rotating electric machine) mounted on a hybrid vehicle is described, but the rotating electric machine according to the present invention can also be used as a motor , generators, and, of course, can be used in various vehicles other than hybrid vehicles (electric vehicles such as fuel cell vehicles and electric vehicles), or in various equipment mounted on industrial equipment, air conditioning equipment, environmental protection equipment, etc. Rotate the motor.
[0038] First, refer to figure 1 and figure 2 The schematic structure of the rotating electric machine of this embodiment is demonstrated. figure 1 It is a top sectional view showing the whole rotating electric machine of this embodiment, figure 2...
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A rotary electric machine configured with a stator, rotor, and permanent magnets disposed in an inverted V-shape that becomes gradually narrower from a side of a center of rotation of the rotor. The rotor is provided with a plurality of support portions that extend radially about the center of rotation, and gap portions are respectively formed in correspondence with the plurality of support portions at positions spaced by a predetermined distance from an edge portion of the permanent magnets in a flowing direction of magnetic flux between the permanent magnets and the stator. The gap portions are formed to have such a length that causes magnetic saturation during generation of low torque in a low-current state and that causes no magnetic saturation during generation of maximum torque in a high-current state in which electricity at a high current is supplied to the stator coil.
Description
technical field [0001] The present invention relates to a rotating electrical machine such as an embedded magnet synchronous motor having a structure in which a rotor supporting permanent magnets rotates relative to a stator, and in particular relates to a rotating electric machine configured so that loss can be improved with a simple structure. motor. Background technique [0002] In general, in a rotating electrical machine such as an embedded magnet synchronous motor (hereinafter also referred to as IPM), a structure including a rotatable rotating shaft and a stator having a cylindrical stator core is known. a rotor having a rotor iron core fixedly arranged on a rotating shaft; a permanent magnet arranged so that a group of magnetic poles with different magnetic properties are arranged in parallel in the radial direction of the rotor; a magnetic field yoke arranged on the outer periphery of the stator; and a winding (stator coil ), the winding forms a magnetic circuit be...
Claims
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IPC IPC(8): H02K1/27H02K21/14
CPCH02K21/14H02K2213/03H02K1/2766
Inventor 稻垣智广武田健大竹新一宫路刚渡边裕太宇鹰良介佐野新也朝永岳志
Owner AISIN AW CO LTD