A rotor includes a rotor core in which magnet mounting holes, which are provided in layers along a radial direction and are arranged symmetrically in a circumferential direction about a d-axis, are formed, and magnets disposed in the magnet mounting holes, wherein the rotor core includes a first bridge portion provided between first magnet mounting holes adjacent to each other across the d-axis, a second bridge portion provided between second magnet mounting holes located further inward than the first magnet mounting holes in the radial direction and adjacent to each other across the d-axis, and third and fourth bridge portions provided between an outer peripheral surface of the rotor core and the first and second magnet mounting holes, respectively, and when smallest widths of the first to fourth bridge portion are L1, L2, L3, and L4, respectively, a relationship of L3<L1<L4<L2 is satisfied.

A rotor includes a rotor core in which magnet mounting holes, which are provided in layers along a radial direction and are arranged symmetrically in a circumferential direction about a d-axis, are formed, and magnets disposed in the magnet mounting holes, wherein the rotor core includes a first bridge portion provided between first magnet mounting holes adjacent to each other across the d-axis, a second bridge portion provided between second magnet mounting holes located further inward than the first magnet mounting holes in the radial direction and adjacent to each other across the d-axis, and third and fourth bridge portions provided between an outer peripheral surface of the rotor core and the first and second magnet mounting holes, respectively, and when smallest widths of the first to fourth bridge portion are L1, L2, L3, and L4, respectively, a relationship of L3<L1<L4<L2 is satisfied.

A rotor includes a rotor core in which first and second magnet mounting holes, which are located outward and inward in a radial direction, respectively, are provided symmetrically in a circumferential direction about a d-axis, and a magnet provided in each of the first and second magnet mounting holes. The first and second magnet mounting holes satisfy a positional relationship defined by 1.0 < L1/L2 ≤ 1.7, where L1 represents a largest distance between a first magnet, which is disposed closest to the d-axis in the second magnet mounting hole, and a second magnet, which is mounted in the first magnet mounting hole, along a magnetization easy direction, and L2 represents a shortest distance between the first and second magnet mounting holes in a region located closer to the q-axis than a d-axis-side end of a third magnet disposed closest to the q-axis in the second magnet mounting hole.

A rotor includes a rotor core in which first and second magnet mounting holes, which are located outward and inward in a radial direction, respectively, are provided symmetrically in a circumferential direction about a d-axis, and a magnet provided in each of the first and second magnet mounting holes. The first and second magnet mounting holes satisfy a positional relationship defined by 1.0 < L1/L2 ≤ 1.7, where L1 represents a largest distance between a first magnet, which is disposed closest to the d-axis in the second magnet mounting hole, and a second magnet, which is mounted in the first magnet mounting hole, along a magnetization easy direction, and L2 represents a shortest distance between the first and second magnet mounting holes in a region located closer to the q-axis than a d-axis-side end of a third magnet disposed closest to the q-axis in the second magnet mounting hole.

A rotor structure with a suppress harmonic substructure includes a rotor body furnished with magnet-setting areas surrounding a circular center and magnets disposed individually in rotor body. Each magnet-setting area has first and second magnet slots, extended obliquely and symmetrically to a radial axis of the circular center. Outer ends of the first and second magnet slot are disposed adjacent to the radial axis and a rotor's outer rim of the rotor body, and inner ends of the first and second magnet slots are disposed away from the radial axis and the rotor's outer rim. The rotor's outer rim is furnished with main cavities, first and second auxiliary cavities. The radial axis corresponding to one magnet-setting area penetrates through the corresponding one main cavity, and one first auxiliary cavity and one second auxiliary cavity in the same magnet-setting area are disposed to opposite sides of the corresponding main cavity.

A rotor structure with a suppress harmonic substructure includes a rotor body furnished with magnet-setting areas surrounding a circular center and magnets disposed individually in rotor body. Each magnet-setting area has first and second magnet slots, extended obliquely and symmetrically to a radial axis of the circular center. Outer ends of the first and second magnet slot are disposed adjacent to the radial axis and a rotor's outer rim of the rotor body, and inner ends of the first and second magnet slots are disposed away from the radial axis and the rotor's outer rim. The rotor's outer rim is furnished with main cavities, first and second auxiliary cavities. The radial axis corresponding to one magnet-setting area penetrates through the corresponding one main cavity, and one first auxiliary cavity and one second auxiliary cavity in the same magnet-setting area are disposed to opposite sides of the corresponding main cavity.

A process for assembling a rotor of a variable-reluctance synchronous motor, characterised in that it comprises the steps of: i. preparing a plurality of discs having a through-cavity for each polar sector for housing at least a magnet; ii. positioning the discs in sequence along an axis of rotation for forming the rotor, so that the through-cavities are aligned to one another; iii. preparing magnets having an identical depth that is smaller than the depth of the rotor, and a frontal section that is identical to or smaller than the area of the cavity; iv. calculating the number of magnets to be inserted, for each polar sector, in a sequence so as to occupy only part of the total depth of the rotor as a function of the performances to be obtained; v. inserting the calculated number of magnets in a series of cavities aligned for each polar sector. The invention also relates to a rotor of a variable-reluctance synchronous motor assembled using the process set out above.

A process for assembling a rotor of a variable-reluctance synchronous motor, characterised in that it comprises the steps of: i. preparing a plurality of discs having a through-cavity for each polar sector for housing at least a magnet; ii. positioning the discs in sequence along an axis of rotation for forming the rotor, so that the through-cavities are aligned to one another; iii. preparing magnets having an identical depth that is smaller than the depth of the rotor, and a frontal section that is identical to or smaller than the area of the cavity; iv. calculating the number of magnets to be inserted, for each polar sector, in a sequence so as to occupy only part of the total depth of the rotor as a function of the performances to be obtained; v. inserting the calculated number of magnets in a series of cavities aligned for each polar sector. The invention also relates to a rotor of a variable-reluctance synchronous motor assembled using the process set out above.

Disclosed are a rotor structure, a permanent magnet auxiliary synchronous reluctance motor, and an electric vehicle. The rotor structure includes a rotor body provided with a permanent magnet slot group; the permanent magnet slot group includes an outer layer of permanent magnet slot and an inner layer of permanent magnet slot; a magnetic conduction channel is formed between the outer layer of permanent magnet slot and the inner layer of permanent magnet slot; the magnetic conduction channel is provided with a connection hole.

Disclosed are a rotor structure, a permanent magnet auxiliary synchronous reluctance motor, and an electric vehicle. The rotor structure includes a rotor body provided with a permanent magnet slot group; the permanent magnet slot group includes an outer layer of permanent magnet slot and an inner layer of permanent magnet slot; a magnetic conduction channel is formed between the outer layer of permanent magnet slot and the inner layer of permanent magnet slot; the magnetic conduction channel is provided with a connection hole.