公开(公告)号：US20220224210A1

公开(公告)日：2022-07-14

申请号：US17604126

申请日：2019-12-27

申请人： GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

发明人： Yusheng HU ,  Bin CHEN ,  Jinfei SHI ,  Yong XIAO ,  Xia LI ,  Qinhong YU

IPC分类号： H02K19/14 ,  H02K15/00

摘要： 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.

公开(公告)号：US20220173644A1

公开(公告)日：2022-06-02

申请号：US17437262

申请日：2019-12-24

申请人： GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

发明人： Xia LI ,  Bin CHEN ,  Jinfei SHI ,  Yong XIAO ,  Qinhong YU

IPC分类号： H02K19/14 ,  H02K1/24

摘要： 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.

公开(公告)号：US20230308001A1

公开(公告)日：2023-09-28

申请号：US18017061

申请日：2021-07-22

申请人： GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

发明人： Yusheng HU ,  Bin CHEN ,  Yong XIAO ,  Jinfei SHI ,  Xia LI ,  Zhidong ZHANG

IPC分类号： H02K19/14 ,  H02K1/24 ,  H02K19/10 ,  H02K15/00

CPC分类号： H02K19/14 ,  H02K1/246 ,  H02K19/103 ,  H02K15/0012 ,  H02K2213/03

摘要： 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).

公开(公告)号：US20220216747A1

公开(公告)日：2022-07-07

申请号：US17605470

申请日：2019-12-25

申请人： GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

发明人： Yusheng HU ,  Bin CHEN ,  Yong XIAO ,  Jinfei SHI ,  Qinhong YU ,  Xia LI

IPC分类号： H02K1/24 ,  H02K29/03 ,  H02K19/02

摘要： The present disclosure provides a direct starting synchronous reluctance motor rotor, and a motor. The direct starting synchronous reluctance motor rotor comprises: a rotor core provided with a plurality of slit grooves, two filling grooves are respectively disposed at two ends of each of the slit grooves 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 disposed to be extended outwards an outside of the rotor core, a beveled edge is disposed on the second end of at least one of the filling grooves away from a d-axis of the rotor core, so that a d-axis flux of the rotor core will not suddenly change when entering a stator along a channel formed at the beveled edge. With this arrangement, a reluctance torque ripple of the motor can be reduced, thereby reducing generated vibration noise, increasing a d-axis inductance and a flux difference between the d-axis and a q-axis, generating a greater reluctance torque, increasing an output torque of the motor with the rotor, and improving a motor efficiency.