公开(公告)号：US20200006993A1

公开(公告)日：2020-01-02

申请号：US16483054

申请日：2018-02-09

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUICHI YOSHIKAWA ,  KEIICHIRO NUKADA ,  HIROKAZU YAMAUCHI ,  MITSUOKI HISHIDA ,  YASUSHI KATO

IPC: H02K3/12 ,  H02K3/28 ,  H02K3/52

Abstract: A motor includes a stator including a stator core and teeth respectively protruding from the stator core in predetermined directions of protrusion, and coils respectively wound onto the teeth n (n is an integer of 3 or greater) turns including first to n-th turns. A k-th (k is an integer, 1

公开(公告)号：US20200044503A1

公开(公告)日：2020-02-06

申请号：US16476332

申请日：2017-11-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUICHI YOSHIKAWA ,  KEIICHIRO NUKADA ,  YASUSHI KATO ,  HIROKAZU YAMAUCHI ,  MITSUOKI HISHIDA

IPC: H02K3/20 ,  H02K1/14 ,  H02K21/16

Abstract: A motor includes a stator including a stator core and teeth respectively protruding from the stator core, and coils respectively wound onto the teeth n (n is an integer of 3 or greater) turns. In a cross section in a first direction representing each of directions of protrusion of the teeth from the stator core, a k-th (k is an integer, 1

公开(公告)号：US20190068091A1

公开(公告)日：2019-02-28

申请号：US16079903

申请日：2017-02-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： AKIHIRO OCHIAI ,  YASUSHI KATO ,  MASAHIRO YASOHARA

IPC: H02P6/16 ,  H02K29/08

CPC classification number: H02P6/16 ,  H02K29/08 ,  H02P6/182

Abstract: A motor drive circuit includes; a rotor position detector that detects a position of a rotor and outputs a rotor position detection signal; a rotor position signal generator that generates signals P1, P2, P3, P4, P5, and P6 as a rotor position signal based on the rotor position detection signal output from the rotor position detector; a rotation direction recognition unit that recognizes a rotation direction of the rotor each time one of signals P1, P2, P3, P4, P5, and P6 is input and replaces the rotor position signal with a corrected rotor position signal; and a winding current output unit that outputs a current to a winding based on the corrected rotor position signal.

公开(公告)号：US20160285326A1

公开(公告)日：2016-09-29

申请号：US14778575

申请日：2014-03-20

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： KIYOMI KAWAMURA ,  HIROAKI KAWASAKI ,  YUICHI YOSHIKAWA ,  YASUSHI KATO ,  HARUHIKO KADO ,  NORITAKA ASO

IPC: H02K1/27 ,  H02K1/02 ,  H02K3/12 ,  H02K15/03 ,  H02K1/14 ,  H02K1/16

CPC classification number: H02K1/2706 ,  H02K1/02 ,  H02K1/14 ,  H02K1/16 ,  H02K1/276 ,  H02K3/12 ,  H02K15/03 ,  H02K2213/03

Abstract: A permanent-magnet-embedded electric motor includes a stator having a coil wound on a stator core, and a rotor disposed rotatably inside the stator through a gap to an inner circumferential surface of the stator core. The rotor is provided with a rotor core formed of laminated steel plates having a plurality of magnet-embedding holes, and a permanent magnet housed and retained in each of the magnet-embedding holes. A thickness of the bridge portions formed between edges of the magnet-embedding holes and an outer circumference of the rotor core, and a thickness of a thinned link portion connecting adjoining two of the bridge portions are thinner than a thickness of the steel plates.

Abstract translation: 永久磁铁嵌入式电动机包括具有卷绕在定子铁芯上的线圈的定子和通过与定子铁芯的内周面的间隙可旋转地设置在定子内的转子。 该转子设置有由具有多个磁体埋入孔的层叠钢板形成的转子铁芯和容纳并保持在每个磁体埋入孔中的永磁体。 形成在磁体埋入孔的边缘与转子芯的外周之间的桥接部分的厚度以及连接两个桥接部分的连接部分的薄壁部分的厚度比钢板的厚度薄。

公开(公告)号：US20200235628A1

公开(公告)日：2020-07-23

申请号：US16483050

申请日：2017-12-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YASUSHI KATO ,  YUICHI YOSHIKAWA ,  HIROKAZU YAMAUCHI ,  KEIICHIRO NUKADA ,  MITSUOKI HISHIDA

IPC: H02K3/28 ,  H02K3/12

Abstract: A motor includes a stator core, teeth respectively protruding from the stator core, and coils respectively wound onto the teeth n (n is an integer of 2 or greater) turns including first to n-th turns. Within each of ranges respectively wound with the coils onto the teeth in directions of protrusion of the teeth from the stator core, the first turn of each of the coil lies adjacent to a center of the motor. A k-th (k is an integer, 1

公开(公告)号：US20150357947A1

公开(公告)日：2015-12-10

申请号：US14654548

申请日：2013-12-10

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： TOSHIKI TUBOUCHI ,  TOMOYA HOSOKAWA ,  YASUSHI KATO

IPC: H02P6/14

CPC classification number: H02P6/16 ,  H02P6/153 ,  H02P6/17

Abstract: A motor drive device of the present invention includes a speed signal generator that generates a rotation speed signal indicating rotation speed; a PWM signal generator that acts on the power switch unit to control the power switch unit so as to generate coil-applied voltage; and a phase advance information generator that has characteristic curve information representing changes of rotation speed of and load on a brushless motor, preliminarily set. The phase advance information generator generates phase advance information according to the load characteristic curve to variably control the phase advance (the phase of voltage applied to the coils of the brushless motor, relative to the induced voltage phase) according to the load characteristic curve.

Abstract translation: 本发明的电动机驱动装置包括：速度信号发生器，其生成表示转速的转速信号; PWM信号发生器，其作用于功率开关单元以控制功率开关单元，以产生线圈施加电压; 以及预先设定的具有表示无刷电动机的转速和负载的变化的特性曲线信息的相位超前信息发生器。 相位提前信息发生器根据负载特性曲线产生相位提前信息，以根据负载特性曲线可变地控制相位提前（施加到无刷电动机的线圈的相位相对于感应电压相位）的相位。