A synchronous reluctance motor includes a rotor and a stator surrounding the rotor. The rotator includes a rotatable shaft and magnetic flux barrier layers arranged radially. One of the magnetic flux barrier layers closest to the stator is filled with a conductor, and one of the magnetic flux barrier layers closest to the rotating shaft is a void.

The present disclosure is related to a self-starting synchronous reluctance motor rotor, a motor and a compressor. The self-starting synchronous reluctance motor rotor includes a rotor core; the rotor core is provided with a plurality of slit grooves; both ends of each of the slit grooves are respectively provided with a filled groove; a first end of the filled groove is provided adjacent to each slit groove, and a second end of the filled groove extends outwards parallel to the d-axis of the rotor core; the second end of the filled groove is provided with at least one bevel edge, so that when the d-axis magnetic flux of the rotor core enters a stator along channels formed at the bevel edges, no abrupt change occurs to the magnetic flux.

The present disclosure is related to a self-starting synchronous reluctance motor rotor, a motor and a compressor. The self-starting synchronous reluctance motor rotor includes a rotor core; the rotor core is provided with a plurality of slit grooves; both ends of each of the slit grooves are respectively provided with a filled groove; a first end of the filled groove is provided adjacent to each slit groove, and a second end of the filled groove extends outwards parallel to the d-axis of the rotor core; the second end of the filled groove is provided with at least one bevel edge, so that when the d-axis magnetic flux of the rotor core enters a stator along channels formed at the bevel edges, no abrupt change occurs to the magnetic flux.

According to one embodiment, in a lateral cross section, a rotor core includes a plurality of layers of barrier regions formed to be arranged in a radial direction with intervals in each magnetic pole. Each barrier region includes a flux barrier extending from near a part of an outer circumferential surface through d axis to near another part thereof. At least a flux barrier of a barrier region provided at an outermost circumferential surface side is filled with a nonmagnetic conductive material. A barrier-side edge on a side of the central axis, which defines the flux barrier of the barrier region provided in an outermost circumferential surface side is located within a range of 0.55<2a/R.sup.2 <0.84.

According to one embodiment, in a lateral cross section, a rotor core includes a plurality of layers of barrier regions formed to be arranged in a radial direction with intervals in each magnetic pole. Each barrier region includes a flux barrier extending from near a part of an outer circumferential surface through d axis to near another part thereof. At least a flux barrier of a barrier region provided at an outermost circumferential surface side is filled with a nonmagnetic conductive material. A barrier-side edge on a side of the central axis, which defines the flux barrier of the barrier region provided in an outermost circumferential surface side is located within a range of 0.55<2a/R.sup.2 <0.84.

The present disclosure provides a rotor structure, an electric motor and a rotor manufacturing method. The rotor structure includes a plurality of rotor sheets (100) and a rotating shaft. The rotor sheets (100) are stacked in sequence along an axial direction of the rotor structure. Each of the rotor sheets (100) is provided with a shaft hole (20), a first slot (111), and first filling slots (121) at both ends of the first slot (111). The first slot (111) extends in a direction of a direct axis (3) of the rotor structure and includes slot sections (1110) at opposite sides of the shaft hole (20). The rotating shaft passes through the shaft hole (20) of the plurality of rotor sheets (100). The first slot (111), the first filling slots (121) and the rotating shaft form a first flux barrier layer (101).

The present disclosure provides a rotor structure, an electric motor and a rotor manufacturing method. The rotor structure includes a plurality of rotor sheets (100) and a rotating shaft. The rotor sheets (100) are stacked in sequence along an axial direction of the rotor structure. Each of the rotor sheets (100) is provided with a shaft hole (20), a first slot (111), and first filling slots (121) at both ends of the first slot (111). The first slot (111) extends in a direction of a direct axis (3) of the rotor structure and includes slot sections (1110) at opposite sides of the shaft hole (20). The rotating shaft passes through the shaft hole (20) of the plurality of rotor sheets (100). The first slot (111), the first filling slots (121) and the rotating shaft form a first flux barrier layer (101).

A synchronous reluctance motor includes a rotor and a stator surrounding the rotor. The rotator includes a rotatable shaft and magnetic flux barrier layers arranged radially. One of the magnetic flux barrier layers closest to the stator is filled with a conductor, and one of the magnetic flux barrier layers closest to the rotating shaft is a void.

The present disclosure provides a rotor assembly and a motor. The rotor assembly includes a rotor body; the rotor body includes a plurality of magnetic poles centered on an axis of the rotor body and uniformly arranged along a circumferential direction of the rotor body; each of the magnetic poles includes a filling slot provided therein with a conductive and magnetic isolation material, the filling slots of the plurality of magnetic poles are orderly arranged along the circumferential direction of the rotor body; two ends of each of the filling slots along the circumferential direction of the rotor body have a first sidewall and a second sidewall respectively; the first sidewall of each of the filling slots and the second sidewall of the adjacent filling slot are parallel to each other, and together form a magnetic flux channel parallel to the q-axis.

The present disclosure provides a direct starting synchronous reluctance motor rotor, a motor and a rotor manufacturing method. The direct starting synchronous reluctance motor rotor comprises: a rotor core provided with a plurality of slit grooves, two ends of each of the slit grooves being provided with a filling groove respectively to form a magnetic barrier layer, a first end of the filling groove being disposed adjacent to the slit groove, a second end of the filling groove being extended towards an outside of the rotor core, and an outer peripheral surface of the rotor core being provided with a notch communicated with the second end of the filling groove. By disposing notches and bevels at the end of the filling grooves, a reluctance torque of the motor can be increased, and then torque ripples generated by rotor and stator slots can be weakened mutually, thereby achieving the purpose of reducing the torque ripple of the motor and vibration noise of the motor, while improving an efficiency of the motor with the rotor and a starting capability of the motor.