|
Affiliation Department |
Department of Electrical and Mechanical Engineering
|
|
Title |
Professor |
|
Contact information |
|
|
Homepage |
|
|
External Link |
|
KOSAKA Takashi
|
|
|
Degree
-
Master (Engineering) ( Nagoya Institute of Technology )
-
Doctor (Engineering) ( Nagoya Institute of Technology )
Research Areas
-
Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Control and system engineering
-
Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Power engineering
From School
-
Nagoya Institute of Technology Faculty of Engineering Department of electrical and computer engineering Graduated
- 1994.03
Country：Japan
From Graduate School
-
Nagoya Institute of Technology Graduate School, Division of Engineering Department of electrical and computer engineering Doctor's Course Completed
- 1999.03
Country：Japan
-
Nagoya Institute of Technology Graduate School, Division of Engineering Department of electrical and computer engineering Master's Course Completed
- 1996.03
Country：Japan
External Career
-
Faculty of Engieering, University of Leicester, United Kingdom, Studies on Computer Aided Optimum Design for Application Specific Electric Motors
2002.11 - 2004.10
Country：United Kingdom
Professional Memberships
-
IEEE(Institute of Electrical and Electronic Engineers)
2003.10
-
The Institute of Electrical Engineers of Japan
1994.07
-
The Japna Institute of Power Electronics
2001.04
-
The Insititute of Electrical Installation Engineers of Japan
2009.10
-
科学技術交流財団
2005.04
Research Career
-
SMCコアを利用したハイブリッド界磁モータの研究開発
Contract Research
Project Year： 2008.07
ハイブリッド自動車駆動用モータとして適した可変界磁磁束制御機能を有し，省レアアース磁石で高出力密度を実現するハイブリッド界磁モータの研究開発
-
小型・軽量ネオジム系永久磁石モータの省希土構造設計法の研究
Grant-in-Aid for Scientific Research
Project Year： 2007.04 - 2010.03
-
用途指向形低コスト位置センサレスブラシレスACモータドライブの最適システム設計
Grant-in-Aid for Scientific Research
Project Year： 2005.04 - 2007.03
Papers
-
GaN Based Modified Integrated On-Board Charger Configuration Using Minimum Additional Active and Passive Components Reviewed
Shohei Funatsu, Hiroaki Matsumori, Takashi Kosaka, Nobuyuki Matsui, Keisuke Nakamura, Mitsuru Takahashi, Shin Taguchi and Saha Subrata
Proc. of 2023 IEEE Energy Conversion Conference & EXPO(ECCE2023) 1976 - 1981 2023.10
Language：English Publishing type：Research paper (international conference proceedings)
-
Alternative PWM Switching Strategy Implementation for a Dual Inverter Fed Open Winding Motor Drive System for an Electric Vehicle Application Reviewed
Hiroaki Matsumori, Takashi Kosaka, Nobuyuki Matsui and Subrata Saha
IEEE Transactions on Industry Applications 59 ( 5 ) 5957 - 5970 2023.07
Language：English Publishing type：Research paper (scientific journal)
Other Link： https://ieeexplore.ieee.org/abstract/document/10171394
-
Study on Electric Motor Vibration Suppression by Active Dynamic Vibration Absorber Reviewed International coauthorship
Takeshi Okada, Makoto Isobe, Takashi Kosaka, Paul Steinmann, Hiroaki Matsumori and Nobuyuki Matsui
Proc. of 2023 IEEE International Electric Machines & Drives Conference (IEMDC) 2023.05
Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings)
DOI： 10.1109/IEMDC55163.2023.10238866
DOI： 10.1109/IEMDC55163.2023.10238866
Other Link： https://ieeexplore.ieee.org/document/10238866
-
Design Study on Light-weight Quasi-coreless SPMSM using CFRP, Small Amount of SMC Core and Aluminum Winding Reviewed
Takashi Kosaka, Chika Higashihama, Teruchika Ishihara, Hiroaki Matsumori and Nobuyuki Matsui
Proc. of 2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia) 2338 - 2343 2023.05
Authorship：Lead author, Corresponding author Language：English Publishing type：Research paper (international conference proceedings)
DOI： 10.23919/ICPE2023-ECCEAsia54778.2023.10213851
DOI： 10.23919/ICPE2023-ECCEAsia54778.2023.10213851
Other Link： https://ieeexplore.ieee.org/document/10213851/authors#authors
-
Inverter Power Device Fault Detection and Fail Safe Action Strategy for Electric Vehicle with a Dual Inverter Fed Open Winding Motor Reviewed
Hiroaki Matsumori, Takashi Kosaka, Nobuyuki Matsui and Subrata Saha
IEEE Transactions on Industry Applications 59 ( 3 ) 3875 - 3888 2023.03
Language：English Publishing type：Research paper (scientific journal)
Other Link： https://ieeexplore.ieee.org/document/10068823
-
High Speed Homopolar Type Permanent Magnet Motor Designed for Fast Acceleration Response Reviewed International journal
Hideaki Arita, Kazuhiro Nishiwaki, Masahiro Iezawa, Takashi Kosaka
IEEJ Journal of Industry Applications 11 ( 6 ) 763 - 770 2022.11
Authorship：Last author, Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers in Japan
This paper presents design studies on a rotor for a high-speed homopolar type permanent magnet motor that can be applied to super chargers for automobiles, cordless stick vacuum cleaners and so forth. The stator comprises a core and a permanent magnet. The rotor is composed of only a core, resulting in enabling the removal of a retaining ring on the surface. Firstly, acceleration performance simulation using a prototype motor with a load blade was developed based on the data measured in an air compressor drive. Subsequently, the rotor shape design refinements based on three-dimensional (3D) finite element analysis were conducted to achieve the maximum torque and power required from a target application under a constraint of core stack length. The design refinement results proven by the acceleration performance of the developed simulation reveal that following the refinements to the rotor design, the homopolar type permanent magnet motor meets the requirement of the target application.
Other Link： https://www.jstage.jst.go.jp/article/ieejjia/11/6/11_21013346/_article/-char/en
-
Comparative Study on Insulation Lifetime of Stator Winding of Dual Inverter Fed Open Winding IPMSM and Single Inverter Fed Star-Connected IPMSM for EV Reviewed International journal
Yuto Maeda, Teppei Hayakawa, Hiroaki Matsumori, Takashi Kosaka, Nobuyuki Matsui, Yoichi Miyoshi, Kiyotaka Koga and Subrata Saha
Proc. of 2022 IEEE Energy Conversion Conference & EXPO(ECCE) 2022.10
Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings) Publisher：IEEE
In this paper, the winding insulation lifetime of a dual inverter fed open winding interior permanent magnet synchronous motor (OWIPMSM) is compared with a conventional single inverter fed star-connected interior permanent magnet synchronous motor (SCIPMSM) for an EV traction application. A twisted pair coil (TP) is connected between the line-to-line terminal of windings of an OWIPMSM and a SCIPMSM and the effect of the line-to-line terminal surge voltage on the turn-to-turn insulation lifetime using the TP is investigated. From the present preliminary insulation lifetime testing results using the TP, it is found that for motors with the same ratings, an OWIPMSM could be designed with a lower insulation level winding than the SCIPMSM for an EV traction application.
-
New Experimental System and Procedure for On-line Insulation Life Testing of Stator Winding of Automotive Traction PMSM without using Dynamo System Reviewed International journal
Teppei Hayakawa, Yuto Maeda, Hiroaki Matsumori, Takashi Kosaka, Nobuyuki Matsui, Yoichi Miyoshi, Kiyotaka Koga and Subrata Saha
Proc. of 2022 IEEE Energy Conversion Conference & EXPO(ECCE) 2022.10
Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings) Publisher：IEEE
This paper proposes an experimental procedure using a new experimental system for on-line insulation turn-to-turn life testing of a stator winding without a rotor of permanent magnet synchronous motor. Without using any expensive large capacity dynamo set-up, the system and procedure make it possible to test the insulation life of the stator winding under steady state operation of the motor even though at high temperatures more than 200 ℃. The line-to-line surge voltage applied to the motor under inverter’s PWM control at running state of the motor can be identically replicated by the proposed
static system. Suitable control blocks are given to describe the experimental procedure for an automotive traction application. -
Design Optimization Study on HEFSM with Flat Aspect Ratio for Enhancing Power Density and Efficiency Reviewed
Takeshi Okada, Mitsuru Saito, Toru Aikoh, Takashi Kosaka, Hiroaki Matsumori, Nobuyuki Matsui
Proc. of 2022 International Conference on Electrical Machines (ICEM) 122 - 128 2022.09
Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings) Publisher：IEEE
This paper focuses on a hybrid excitation flux switching motor (HEFSM) as one of the variable flux motors for EV/HEV propulsion. HEFSMs have the advantage in that all the active components are concentrated in the stator, which provides ease of cooling, whereas causes the drawback of being likely to occur severe magnetic saturation on the stator side. Therefore, a low L/D ratio, i.e., a flat aspect ratio, was selected, which offers a wide two-dimensional cross-section and mitigation of the magnetic saturation. In this paper, optimization of permanent magnet arrangement and grades under a low L/D ratio is addressed to enhance efficiency and power density over the entire speed range while satisfying design constraints and required performance for EV/HEV propulsion applications. The experimental verification shows that the motor efficiency of the newly designed HEFSM significantly exceeded that of the previously designed one, which reaches over 92% at the frequent operating point.
DOI： 10.1109/ICEM51905.2022.9910636
Other Link： https://ieeexplore.ieee.org/document/9910636
-
Comparative Study of High-Current-Density High-Speed Vernier Permanent Magnet Machines for Electric Vehicle Traction Application Reviewed International coauthorship
Yuting Gao, Takashi Kosaka, Ronghai Qu
Proc. of 2022 International Conference on Electrical Machines (ICEM) 1899 - 1905 2022.09
Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings) Publisher：IEEE
So far, vernier permanent-magnet machines (VPMs) are mostly applied in natural-cooling slow-speed applications, such as wind power generation, servo system, etc., which are designed with low current density and rotation speed. However, for high current density and rotation speed application, such as electric vehicle (EV) traction, the performances of VPMs are unknown. This paper will validate the feasibility of VPMs in EV traction application, and comparatively study the performances of high-current-density high-speed VPMs at different working conditions. These VPMs share the same stator core and winding, but with different rotor PM configurations, which include surface-mounted, embedded, V-shape and spoke-shape. Besides, the optimal VPM is also compared with a regular interior V-shape PM machine, which is commonly used in EV traction application. It shows that the VPM has higher torque density and efficiency, lower cogging torque and torque ripple than the regular PM machine.
DOI： 10.1109/ICEM51905.2022.9910876
Other Link： https://ieeexplore.ieee.org/document/9910876
Books and Other Publications
-
高効率モーター用磁性材料とモーター設計 国立研究開発法人新エネルギー・産業技術総合開発機構（ＮＥＤＯ） 委託事業未来開拓研究プログラム 「次世代自動車向け高効率モーター用磁性材料技術開発」 モーターに関する成果報告
尾崎 公洋、他（ Role： Joint author , 第４章3節）
高効率モーター用磁性材料技術研究組合 2020.05
Total pages：118 Responsible for pages：PP.103-110 Language：jpn Book type：Scholarly book
-
Masatsugu Takemoto, et.al.（ Role： Joint author , Chapter 3 section 2）
The Institute of Electrical Engineering Japan 2022.05
Total pages：63 Responsible for pages：PP.16-17 Language：jpn Book type：Report
This technical report surveys technical trend of electric drive assisted system for mobility toward realize low carbon society. Elemental technologies for mobilities such as automobiles, railway vehicles, construction machineries, vessels and aircraft and inherent technologies behind and materials are surveyed and overviewed. Those technologies are classified from viewpoints of mutual usage of technologies between each mobility.
-
Takashi Kosaka, et.al.（ Role： Joint author , 1st Chapter, 7th Chapter）
The Institute of Electrical Engineering Japan 2021.02
Total pages：64 Responsible for pages：3-4, 64ページ Language：jpn Book type：Report
In this technical report, historical progress of the application-specific electric motors (ASEM), which specialize in motor structures or mechanisms for the machine or mechanism of the target applications to satisfy application-specific requirements, surveyed by the R&D committee is overviewed. Furthermore, with rare earth free or less rare earth and variable magnetic force as keywords, peculiar motors expected as candidates for next generation's ASEM are presented in addition with magnetic materials and inverter technologies supporting them.
-
Yoshiaki Kano, et.al.（ Role： Joint author , 3rd Chapter, Section 3.4）
The Institute of Electrical Engineering Japan 2020.08
Total pages：56 Responsible for pages：21-23ページ Language：jpn Book type：Report
Application-specific electric motors (ASEMs) have been widely utilized in a variety of variable-speed motor drive applications, such as factory automation, home appliances, and automobiles. In these applications, reluctance torque assisted permanent magnet (PM) motors represented by interior PM motors achieve high levels of resource and energy savings using electromechanical integration technology. The committee performed an extensive survey on the electromechanical integration technology for each application. This technical report covers the following topics. Technical trends of electromechanical integration technology in traction drives and auxiliary motors for automobiles as well as home and consumer appliances. Component technologies supporting ASEMs.
-
Technical Trend of Electric Drive Assisted System for Mobility toward Creating Sustainable Society
Takashi Kosaka, et.al.（ Role： Joint author , 1st Chapter, 7th Chapter）
The Institute of Electrical Engineering Japan 2019.02
Total pages：73 Responsible for pages：3-4ページ，73ページ Language：jpn Book type：Report
This technical report surveys technical trends of electric drive assisted system for Mobility toward creating sustainable society. Recent electrifications introduced to railway vehicles, construction machineries, vessels, aircrafts and automobiles have been reviewed. For each electric drive assisted system employed in each mobility, the survey has been made from viewpoints of inherent feature to be considered, the system configuration corresponding to the inherent feature and the technology behind.
-
Next-Generation Application-Specific Electric Motors and Component Technology
Yuji Enomoto, et.al.（ Role： Contributor , 2.2.6 Hybrid Excitation Motor (Permanent Magnet on Stator)）
The institute of Electrical Engineers in Japan 2017.08
Total pages：66 Responsible for pages：13-15 Language：jpn Book type：Report
Application Specific Electric Motor was defined as "motor based on the structure of the motor and a way of the so-called "hardware" like approach by which an organization changes itself and achieves component performance of a machine or an organization" in around 1994. Today Reluctance torque assisted motors represented by IPMSM are the effective means of reducing global warming ,while applying expansion of it to the motor for driving of household electrical appliance, an electric car and a hybrid car of room air -conditioning is advancing. Meanwhile, The Inst. of Electrical Engineers in Japan has done the investigation of the research and development of motors such as the motor efficiency improvements and the rare earth reductions. Main investigation ad hoc committee expanded the investigation area and investigated about the variable magnetic flux to expand the rated performance of the motor and the driving range and technology of using three-dimensional space. Moreover it can report that investigated about necessary peripheral technology to compose a high performance motor. This technical report shows the result of the next-generation motor which makes the directionality of future's motor development clear, and of the support component technology development trend.
-
A Technology Trend of Electric Motors for EV/HEV
Nobuyuki Matsui, Kan Akatsu et.al.（ Role： Contributor , General Remarks）
The Institute of Electrical Engineers in Japan 2017.05
Total pages：55 Responsible for pages：3-4 Language：jpn Book type：Report
Application Specific Electric Motor was defined as "motor based on the structure of the motor and a way of the so-called "hardware" like approach by which an organization changes itself and achieves component performance of a machine or an organization" in around 1994. Today Reluctance torque assisted motors represented by IPMSM are the effective means of reducing global warming ,while applying expansion of it to the motor for driving of household electrical appliance, an electric car and a hybrid car of room air -conditioning is advancing. Meanwhile, The Inst. of Electrical Engineers in Japan has done the investigation of the research and development of motors such as the motor efficiency improvements and the rare earth reductions. Main investigation ad hoc committee expanded the investigation area and investigated about the variable magnetic flux to expand the rated performance of the motor and the driving range and technology of using three-dimensional space. Moreover it can report that investigated about necessary peripheral technology to compose a high performance motor. This technical report shows the result of the next-generation motor which makes the directionality of future's motor development clear, and of the support component technology development trend.
-
Reluctance Torque Assisted Motors
Masayuki Morimoto, Takashi Kosaka, et.al（ Role： Joint author , Chapter 2 Section 4, Chapter 7）
The Institute of Electrical Engineers of Japan 2016.01 （ ISBN:978-4-88686-299-0 ）
Total pages：212 Responsible for pages：44-49, 152-188 Language：jpn Book type：Scholarly book
-
Less Rare-Earth and Rare-Earth Free Motors
Nobuyuki Matsui, Takashi Kosaka, et.al.（ Role： Joint author）
THE NIKKAN KOGYO SHIMBUN. LTD 2013.12 （ ISBN:978-4-526-07171-3 ）
Language：jpn Book type：Scholarly book
-
Latest Trends of Technologies and Applications of Permanent Magnet Synchronous Machines
Akio Toba, Takashi Kosaka, etc.（ Role： Joint author）
The Institute of Electrical Engineering Japan 2013.05
Language：jpn Book type：Report
Misc
-
Trends in Traction Motor for Automobile ~ Efforts of NITech at MagHEM ~ Invited
Takashi Kosaka
Technical Review of Tamagawa 2021.12
Authorship：Lead author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (other) Publisher：TAMAGAWA SEIKI Co.,Ltd.
-
Noise and Vibration Reduction in SR Motor Invited
Takashi Kosaka
The Journal of The Institute of Electrical Engineers of Japan 137 ( 12 ) 825 - 828 2017.12
Authorship：Lead author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：The Institute of Electrical Engineers of Japan
Other Link： https://www.jstage.jst.go.jp/browse/ieejjournal/-char/ja/
-
Technical Trend in Motor s for xEV Electrical Propulsion Invited
Takashi Kosaka
Die and Mould Technology 33 ( 1 ) 2017.12
Authorship：Lead author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media) Publisher：THE NIKKAN KOGYO SHIMBUN,LTD
Other Link： http://pub.nikkan.co.jp/magazine_series/detail/0005
-
Introduction of Researches and Deveploments on Motors as Electric Machines Invited
Takashi Kosaka
( 360 ) 2 - 4 2016.10
Authorship：Lead author Language：Japanese Publishing type：Rapid communication, short report, research note, etc. (bulletin of university, research institution) Publisher：The Japan Research and Development Center for Metals
-
Latest Technologies of SR Motos, PM Motors and Variable Magnetization Motors for Three Major Domestic Appliances Invited
Takashi Kosaka
Transistor Gijutsu 52 ( 12 ) 131 - 136 2015.12
Authorship：Lead author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media) Publisher：CQ Publishing Co.,Ltd.
Other Link： http://www.cqpub.co.jp/hanbai/books/MTR/MTR201512.htm
Presentations
-
GaN Based Modified Integrated On-Board Charger Configuration Using Minimum Additional Active and Passive Components International conference
Shohei Funatsu
2023 IEEE Energy Conversion Conference & EXPO (ECCE2023) 2023.10 Institute of Electrical and Electronics Engineers
Event date： 2023.10 - 2023.11
Language：English Presentation type：Poster presentation
Venue：Nashvilee, TN, USA Country：United States
-
Design Study on Light-weight Quasi-coreless SPMSM using CFRP, Small Amount of SMC Core and Aluminum Winding International conference
Teruchika Ishihara
2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia) 2023.05 Korean Institute of Power Electronics
Event date： 2023.05
Language：English Presentation type：Poster presentation
Venue：Jeju, Korea Country：Korea, Republic of
DOI： 10.23919/ICPE2023-ECCEAsia54778.2023.10213851
Other Link： https://ieeexplore.ieee.org/document/10213851/authors#authors
-
Study on Electric Motor Vibration Suppression by Active Dynamic Vibration Absorber International coauthorship International conference
Takashi Kosaka
2023 IEEE International Electric Machines & Drives Conference (IEMDC) 2023.05 Institute of Electrical and Electronics Engineers
Event date： 2023.05
Language：English Presentation type：Oral presentation (general)
Venue：San Francisco, CA, USA Country：Japan
DOI： 10.1109/IEMDC55163.2023.10238866
Other Link： https://ieeexplore.ieee.org/document/10238866
-
Variable Flux Motor (Hybrid Excitation Flux Switching Motor)
Takashi Kosaka
The 2023 Annual Meeting IEE of Japan 2023.03 The Institute of Electrical Engineering of Japan
Event date： 2023.03
Language：Japanese Presentation type：Symposium, workshop panel (nominated)
Venue：Nagoya University Country：Japan
-
ナノクリスタル材料を用いた EMI フィルタの性能評価
北原 和輝
電気学会 半導体電力変換研究会 2023.07 一般社団法人電気学会
Event date： 2023.07
Language：Japanese Presentation type：Oral presentation (general)
Venue：神戸 Country：Japan
-
Iron loss characteristics for various magnetic materials under PWM inverter excitation International conference
Taisei Yamaguchi
IEEE INTERMAG 2023 2023.05 Institute of Electrical and Electronics Engineers
Event date： 2023.05
Language：English Presentation type：Oral presentation (general)
Venue：sendai Country：Japan
-
Hybrid Excitation Flux Switching Motor Invited
Takashi Kosaka
2022.06 NEDO
Event date： 2022.06
Language：Japanese Presentation type：Oral presentation (invited, special)
Venue：Online Country：Japan
-
Latest Technical Trend of Miniaturization, Weight Reduction, and High Efficiency of Electric Motors by Increasing the Rotational Speed Invited International conference
Takashi Kosaka
2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia) 2022.05 The Institute of Electrical Engineering of Japan
Event date： 2022.05
Language：English Presentation type：Oral presentation (invited, special)
Venue：Himeji City Culture and Convention Center (Arcrea HIMEJI) Country：Japan
-
Hybrid Excitation Flux Switching Motor Employing Variably Magnetizable Permanent Magnet ~Touching the Best Paper Awards (First Place) of the IEMDC2021 ~ Invited
Takashi Kosaka
Technical Meeting on "Rotating Machinery", IEE Japan The Institute of Electrical Engineering of Japan
Event date： 2021.11
Language：Japanese Presentation type：Oral presentation (invited, special)
Venue：Online
-
R&D on Hybrid Excitation Motors for Electrified Vehicle Traction Drive under MagHEM Project Invited International conference
Takashi Kosaka
2021 International Conference on Electric Machines and Systems The Koran Institute of Electrical Engineers
Event date： 2021.10 - 2021.11
Language：English Presentation type：Oral presentation (keynote)
Venue：Gyeongju, Korea
To develop high performance magnetic materials in pursuit high efficiency motor, the future pioneering program “Development of Magnetic Material Technology for High-efficiency Motors” commissioned by the New Energy and Industrial Technology Development Organization (NEDO) has been launched in Japan since 2012. Technology research association of magnetic materials for high-efficiency motors (MagHEM) has been organized to proceed various R&D projects. As one of R&D projects, various types of hybrid excitation motors employing new magnet materials for electrified vehicle traction drive has been pursued by our research group in Nagoya Institute of Technology for a last decade. In this keynote lecture, historical progress in R&D of hybrid excitation motors as a possible candidate of high efficiency motor for vehicle propulsion is presented.
Industrial Property Rights
-
回転電機制御装置
サハ スブラタ、岩井 宏起、小坂 卓、松盛 裕明、齋藤 尚登、伊藤 悦申、藤原 勲
Applicant：株式会社アイシン、国立大学法人名古屋工業大学
Application no：2021-566826 Date applied：2020.09
Announcement no：WO-A1-2021/131203 Date announced：2021.07
Patent/Registration no：7269576 Date registered：2023.04 Date issued：2023.05
Rights holder：株式会社アイシン、国立大学法人名古屋工業大学
-
Motor
Takashi Kosaka, Yoshiaki Kano, Yoshihisa Hojo
Applicant：TOYO DENKI SEIZO K.K., Nagoya Institute of Technology
Application no：特願2018-058261 Date applied：2018.03
Announcement no：2019-170128 Date announced：2019.10
Country of applicant：Domestic Country of acquisition：Domestic
-
Rotating Electric Machine
Yoshinari Asano, Takashi Kosaka
Applicant： DAIKIN INDUSTRIES, LTD., Nagoya Institute of Technology
Application no：2016-166428 Date applied：2016.08
Announcement no：2017-63597 Date announced：2017.03
Patent/Registration no：6139007 Date registered：2017.05 Date issued：2017.05
Country of applicant：Domestic Country of acquisition：Domestic
-
Rotating Electric Machine
Yoshinari Asano, Takashi Kosaka
Applicant：DAIKIN INDUSTRIES, LTD., Nagoya Institute of Technology
Application no：2016325752 Date applied：2016.08
Patent/Registration no：AU2016325752 Date registered：2019.06 Date issued：2019.06
Country of applicant：Foreign country Country of acquisition：Foreign country
【技術課題】従来型の磁石内側配置型HEFSM(1)では，増磁制御時に界磁巻線起磁力が永久磁石に対して逆磁界として働く。そのため，高保磁力磁石が必要となり，Dy 添加量の点で難を有する。これに対し，磁石外側配置型HEFSM(2)では，前述の関係が逆転し，低保磁力磁石の使用が可能となるが，最大トルク・効率の低下が問題となる。このことは文献(3)で既に報告したように，磁石外側配置型HEFSM では永久磁石磁束がトルク発生に寄与しにくいことが一因であり，改善策として界磁巻線スロットバックヨーク部の磁気抵抗増加を提案している。以上から，Dy 添加量低減と高効率化の両立のためには，永久磁石への逆磁界を生じず，同バックヨーク部の磁気抵抗を高くできる構造とすればよいことが示唆される。
【解決手段】界磁巻線を磁石の上下に分配
した磁石中央配置型HEFSM を提案する。界磁巻線非通電時には同図(a)のように磁石磁束は固定子内で短絡して低ギャップ磁束密度に，界磁巻線増磁制御時は同図(b)のように磁束経路が形成され，磁石磁束に界磁巻線磁束が重畳し，高ギャップ磁束密度化を図れる。本構造により，磁石に対する上下の界磁巻線起磁力が打ち消しあうのに加え，界磁スロットバックヨークの磁気抵抗増加が可能となる。 -
Electric Motor
Yoshinari Asano, Takashi Kosaka
Applicant：Daikin Industries Ltd., Nagoya Institute of Technology
Application no：15/500014 Date applied：2015.06
Patent/Registration no：10348174 Date registered：2019.07 Date issued：2019.07
Country of applicant：Foreign country Country of acquisition：Foreign country
An electric motor includes a rotor and a stator including a stator core, a plurality of armature windings, a plurality of field windings, and a plurality of bonded magnets. The stator core has a plurality of teeth alternately defining field slots and armature slots along a circumferential direction, and a stator yoke magnetically coupling the plurality of teeth opposite the rotor. Each armature winding is wound around two of the teeth sandwiched between an adjacent pair of the armature slots. Each field winding is wound around two of the teeth sandwiched between an adjacent pair of the fieldslots. The magnets are individually located in the field slotswhile opposing the field windings in the radial direction. Each adjacent pair of the magnets along the circumferential direction respectively has an adjacent pair of pole surfaces,with the adjacent pair of pole surfaces having a same polarity.
-
Control Unit of Switched Reluctance Motors
Hiroshi Shimada, Takashi Kosaka
Applicant：Fuji Electric Co., Ltd.
Application no：2012-185300 Date applied：2012.08
Announcement no：2014-14552 Date announced：2014.03
Patent/Registration no：6069953 Date registered：2017.01 Date issued：2017.01
Country of applicant：Domestic Country of acquisition：Domestic
-
Rotating Machine
Yoshinobu Kamada, Masami Fujitsuna, Hiroaki Kajiura, Takashi Kosaka, Takafumi Matsumoto, Nobuyuki Matsui
Application no：2012-69859 Date applied：2012.03
Announcement no：2013-201869 Date announced：2013.10
Patent/Registration no：5798072 Date registered：2015.08 Date issued：2015.08
Country of applicant：Domestic Country of acquisition：Domestic
-
Rotating Electric Machine
Kazuki Tonogi, Toshihiko Yoshida, Norimoto Minoshima, Nobuyuki Matsui, Takashi Kosaka, et.al.
Application no：13/407472 Date applied：2012.02
Patent/Registration no：9083225 Date registered：2015.07 Date issued：2015.07
Country of applicant：Foreign country Country of acquisition：Foreign country
-
Rotating Electric Machine
Kazuki Tonogi, Toshihiko Yoshida, Norimoto Minoshima, Nobuyuki Matsui, Takashi Kosaka, et.al.
Application no：201210047825.X Date applied：2012.02
Patent/Registration no：ZL201210047825.X Date registered：2014.11 Date issued：2014.11
Country of applicant：Foreign country Country of acquisition：Foreign country
-
Rotating Machine
Kaoru Yoshikawa, Kasuki Tonogi, Nobuyuki Matsui, Takashi Kosaka
Application no：2012-3336 Date applied：2012.01
Announcement no：2013-14386 Date announced：2013.07
Country of applicant：Domestic Country of acquisition：Domestic
Awards
-
Excellent Technical Activity Award Group Writing Award
2019.05 The Institute of Electrical Engineers of Japan Reluctance Torque Assisted Motors
Technical Committee on Technologies of Reluctance Torque Assisted Motors
Award type：Award from Japanese society, conference, symposium, etc. Country：Japan
-
Best Paper Award (The First Prize) in the 20th International Conference on Electric Machines and Systems (ICEMS2017)
2017.08 The 20th International Conference on Electric Machines and Systems (ICEMS2017) Study on Commutation Control Method for Reducing Noise and Vibration in SRM
Sungyong Shin, Naoki Kawagoe, Takashi Kosaka and Nobuyuki Matsui
Award type：Award from international society, conference, symposium, etc. Country：Australia
In order to reduce noise and vibration in switched reluctance motors (SRM), many kinds of commutation methods have been proposed. One of them is well-known as 2-stage commutation method. However, it has a defect which is revealed particularly when SRM is operated at high speed and high load condition. In this study, through the magnetic-structural coupled analysis using FEM and the mathematical analysis of exciting force in 4-phase 8/6 SRM, the reason why vibration reduction based on the 2-stage commutation does not work is investigated. According to the investigations, a modified method to reduce vibration and noise independent from operating condition is proposed.
-
中部経済産業局感謝状
2012.12 中部経済産業局
小坂 卓
Country：Japan
-
第30回永井奨励賞
2013.03 公益財団法人永井科学技術財団
小坂 卓
Award type：Award from publisher, newspaper, foundation, etc. Country：Japan
-
First Paper Prize Award of the 2010 International Power Electric Conference
2010.06 電気学会産業応用部門
Takashi Kosaka, Takaaki Hirose, Nobuyuki Matsui
Award type：Award from international society, conference, symposium, etc. Country：Japan
-
電気学会学術振興賞進歩賞
2009.05 電気学会
松井信行, 小坂卓, 青木康明
Award type：Honored in official journal of a scientific society, scientific journal Country：Japan
-
Committee Prize Paper Award (Third Prize), The Electric Machine Committee of the IEEE Industry Applications Society
2007.12
Award type：Award from international society, conference, symposium, etc. Country：United States
-
技術部門貢献賞
2016.08 公益社団法人 自動車技術会
小坂 卓
Country：Japan
技術会議モータ技術部門委員会への多大なる貢献
-
平成19年度電気学会全国大会優秀論文発表賞
2007.04 -
-
Country：Japan
-
Outstanding Paper Award, Internationa Conference on Electric Machine and Systems
2007.04
Committee Memberships
-
電気学会 電気学会東海支部活動推進員
2010.04
Committee type：Academic society
-
電気学会 自動車技術委員会１号委員
2010.04
Committee type：Academic society
-
パワーエレクトロニクス学会 評議員
2001.04
Committee type：Academic society