JP7435482B2 - 回転電機用ロータ - Google Patents
回転電機用ロータ Download PDFInfo
- Publication number
- JP7435482B2 JP7435482B2 JP2021001635A JP2021001635A JP7435482B2 JP 7435482 B2 JP7435482 B2 JP 7435482B2 JP 2021001635 A JP2021001635 A JP 2021001635A JP 2021001635 A JP2021001635 A JP 2021001635A JP 7435482 B2 JP7435482 B2 JP 7435482B2
- Authority
- JP
- Japan
- Prior art keywords
- axis
- magnet
- magnetic flux
- magnets
- rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000004907 flux Effects 0.000 claims description 151
- 230000004888 barrier function Effects 0.000 claims description 50
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000001816 cooling Methods 0.000 description 70
- 230000007423 decrease Effects 0.000 description 9
- 230000005347 demagnetization Effects 0.000 description 4
- 238000013021 overheating Methods 0.000 description 4
- 230000036544 posture Effects 0.000 description 4
- 239000012809 cooling fluid Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Description
第1磁石の逆V字形状の頂点S1の角度は第2磁石の逆V字形状の頂点S2の角度よりも大きくされ、第1磁石よりもロータコアの外周側に配設された第2磁石の逆V字形状の頂点S2を中心として一対の第1磁石の内周側角部を起点及び終点として結ぶ円弧が境界仮想線Lmであるため、その境界仮想線Lmは第1磁石の磁石磁束の境界線に近似し、上記発明の効果が適切に得られる。
Wb=Wd+Wq2 ・・・(1)
(1/2)Wq1≦Wq2<Wq1 ・・・(2)
Claims (3)
- 円筒形状のロータコアを有するとともに、該ロータコアには、磁石取付部を有する一対のフラックスバリアがq軸を挟んで周方向の両側に対称的に設けられ、前記磁石取付部に磁石が配設されているとともに、前記q軸上に空洞部が設けられており、前記q軸に沿ってステータ磁束が通過させられる回転電機用ロータにおいて、
前記一対のフラックスバリアには、前記磁石として第1磁石と該第1磁石よりも外周側の第2磁石とが前記q軸を挟んで対称的にそれぞれ一対設けられているとともに、該第1磁石及び該第2磁石はロータ軸の中心線と直角な断面が長方形断面で、前記ロータコアの内周側へ向かうに従って拡開する逆V字形状を成す姿勢でそれぞれ配置され、前記第1磁石の前記逆V字形状の頂点S1の角度は前記第2磁石の前記逆V字形状の頂点S2の角度よりも大きくされている一方、
前記q軸の両側に設けられた前記一対のフラックスバリアの相互間の最短距離を、前記ステータ磁束が通過するq軸突極幅Wq1とし、
前記一対の第1磁石の各々の角部のうち前記ロータコアの最も内周側に位置する内周側角部を起点及び終点として結び且つ前記頂点S2を中心とする円弧を、前記第1磁石の磁束である磁石磁束の境界仮想線Lmとして、
前記空洞部は前記境界仮想線Lmよりも前記ロータコアの内周側に設けられているとともに、
前記第1磁石と前記空洞部との間の距離が最も近い部分を結んだ線分を最短線分Lsとして、該最短線分Ls上において前記境界仮想線Lmとの交点Pよりも前記空洞部側の長さをq軸磁束通過幅Wq2とした場合に、該q軸磁束通過幅Wq2が前記q軸突極幅Wq1よりも小さい
ことを特徴とする回転電機用ロータ。 - 前記ロータコアには、少なくとも2つのフラックスバリアが外周側へ向かうに従って拡開するように設けられたV字形状乃至はU字形状を成すV字配置パターンを1組として、前記ロータ軸の中心線まわりに等角度間隔で複数組設けられており、
周方向に隣接する2組のV字配置パターンの中間線が前記q軸で、該q軸の両側に最も近接して位置する一対のフラックスバリアが、前記q軸を挟んで周方向の両側に対称的に設けられた前記一対のフラックスバリアである
ことを特徴とする請求項1に記載の回転電機用ロータ。 - 前記q軸磁束通過幅Wq2は、前記q軸突極幅Wq1よりも小さく且つ該q軸突極幅Wq1の1/2以上である
ことを特徴とする請求項1又は2に記載の回転電機用ロータ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021001635A JP7435482B2 (ja) | 2021-01-07 | 2021-01-07 | 回転電機用ロータ |
US17/518,088 US20220216751A1 (en) | 2021-01-07 | 2021-11-03 | Rotor for rotating electric machine |
CN202210005462.7A CN114726127A (zh) | 2021-01-07 | 2022-01-05 | 旋转电机用转子 |
EP22150432.7A EP4027491A1 (en) | 2021-01-07 | 2022-01-06 | Rotor for rotating eletric machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021001635A JP7435482B2 (ja) | 2021-01-07 | 2021-01-07 | 回転電機用ロータ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2022106548A JP2022106548A (ja) | 2022-07-20 |
JP7435482B2 true JP7435482B2 (ja) | 2024-02-21 |
Family
ID=79269807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2021001635A Active JP7435482B2 (ja) | 2021-01-07 | 2021-01-07 | 回転電機用ロータ |
Country Status (4)
Country | Link |
---|---|
US (1) | US20220216751A1 (ja) |
EP (1) | EP4027491A1 (ja) |
JP (1) | JP7435482B2 (ja) |
CN (1) | CN114726127A (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022107335A (ja) * | 2021-01-08 | 2022-07-21 | トヨタ自動車株式会社 | モータの磁石油冷構造及びモータ |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007104888A (ja) | 2005-09-07 | 2007-04-19 | Toshiba Corp | 回転電機 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6042976B2 (ja) | 1977-03-11 | 1985-09-26 | 日本電気株式会社 | デ−タ処理装置 |
JP2006314152A (ja) * | 2005-05-06 | 2006-11-16 | Nissan Motor Co Ltd | 永久磁石型電動機 |
JP2015053822A (ja) * | 2013-09-09 | 2015-03-19 | トヨタ自動車株式会社 | ロータ、および、ロータの製造方法 |
US20170229933A1 (en) * | 2016-02-10 | 2017-08-10 | Ford Global Technologies, Llc | Utilization of Magnetic Fields in Electric Machines |
DE102018215864A1 (de) * | 2018-09-18 | 2020-03-19 | Robert Bosch Gmbh | Rotor eines Elektromotors sowie Elektromotor |
-
2021
- 2021-01-07 JP JP2021001635A patent/JP7435482B2/ja active Active
- 2021-11-03 US US17/518,088 patent/US20220216751A1/en active Pending
-
2022
- 2022-01-05 CN CN202210005462.7A patent/CN114726127A/zh active Pending
- 2022-01-06 EP EP22150432.7A patent/EP4027491A1/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007104888A (ja) | 2005-09-07 | 2007-04-19 | Toshiba Corp | 回転電機 |
Also Published As
Publication number | Publication date |
---|---|
US20220216751A1 (en) | 2022-07-07 |
EP4027491A1 (en) | 2022-07-13 |
CN114726127A (zh) | 2022-07-08 |
JP2022106548A (ja) | 2022-07-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5757281B2 (ja) | 回転電機のロータ | |
US9231445B2 (en) | Rotor for the electric machine | |
JP7107243B2 (ja) | 回転電機 | |
JP6331506B2 (ja) | 回転電機のロータ構造 | |
JP6215041B2 (ja) | モータ | |
JP6879140B2 (ja) | 回転電機 | |
US9882441B2 (en) | Motor | |
KR20170043464A (ko) | 회전 전기 기기, 회전자 철심의 제조 방법 | |
WO2020027338A1 (ja) | 回転電機の回転子 | |
US20150380996A1 (en) | Motor and its rotor | |
JP5073692B2 (ja) | 回転電機 | |
JP7435482B2 (ja) | 回転電機用ロータ | |
JP2017201849A (ja) | 埋め込み永久磁石式同期電動機 | |
WO2020100675A1 (ja) | 回転子およびそれを備えた回転電気機械 | |
JP2018085877A (ja) | 回転電機 | |
JP2019068574A (ja) | 永久磁石 | |
JP2009296841A (ja) | 回転電機 | |
JP7396311B2 (ja) | 回転電機用ロータ | |
JP7458699B2 (ja) | 可変磁束型回転電機 | |
JP2011193627A (ja) | 回転子鉄心および回転電機 | |
JP5679695B2 (ja) | 永久磁石式回転電機 | |
JP5089325B2 (ja) | 電動モータ | |
CN212486223U (zh) | 转子及马达 | |
US20240014702A1 (en) | Rotor apparatus for an electric machine | |
WO2023105701A1 (ja) | 回転電機の回転子 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20230223 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20231025 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20231107 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20231214 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20240109 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20240122 |
|
R151 | Written notification of patent or utility model registration |
Ref document number: 7435482 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |