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Energy-efficient lightweight drives by multi-parametric machine-inverter co-design and split-mid-point modularization

Research Project

Project/Area Number 20H02138
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 21010:Power engineering-related
Research InstitutionKyoto University of Advanced Science

Principal Investigator

カステッラッズィ アルベルト  京都先端科学大学, 工学部, 教授 (70866897)

Co-Investigator(Kenkyū-buntansha) 中村 武恒  京都大学, 工学研究科, 特定教授 (30303861)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Granted (Fiscal Year 2021)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2022: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2021: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Fiscal Year 2020: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
KeywordsElectric drives / Multi-level inverters / WBG semiconductors / High density machines / WBG efficiency boost / comprehensive design / energy efficiency / modular design / high power density / iron-less machines / PWM schemes
Outline of Research at the Start

The research is designed around 5 work-packages, covering a period of 3 years. Year 1 is mainly dedicated to developing a novel joint design framework, leading to prototyping and demonstration of each component in Year 2.
Year 3 is for system level demonstration and dissemination of results.

Outline of Annual Research Achievements

To date the project has achieved the following objectives: selection of candidate machine and inverter topology for proof-of-concept demonstration purposes; preliminary assessment of PWM options and selection of implementation platform; consolidated parametric design options for both inverter and machine; preliminary demonstration of Split-Mid-Point inverter modular design (one paper published on this topic at ECCE Asia 2021) yielding same power density and full load efficiency as traditional design; prototype power cell and gate driver development with ongoing experimental functional demonstration; preliminary formulation of theoretical joint design framework, summarised in an abstract submitted for publication at an upcoming specialist conference (ICEMS2021).

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

The project has advanced as planned in the first year and has also moved the first steps in the second year according to the original workplan.
The consolidation of the joint design framework is still in progress, but all major intended goals were met at least at a preliminary stage. Notwithstanding some Corona related difficulties (e.g. remote supervision of researchers), we managed to stay on track and make regular progress. The results of the first year have been summarised in one accepted publication at the IEEE ECCE-Asia2021 conference and in one abstract submitted for consideration at ICEMS2021.

Strategy for Future Research Activity

The project is now entering the most scientifically enthusing phase, consisting in the development of hardware prototypes of machine and inverter, separately. Results of experiments will be used in iteration with design optimization to consolidate and validate the joint design framework proposal.
The second year we expect to be rich in both experimental and theoretical results, which will be mutually underpinning their significance.
We expect that in the second year we will have sufficient material in quantity and quality for considering a journal publication, next to a couple more conference publications.

Report

(1 results)
  • 2020 Annual Research Report

Research Products

(2 results)

All 2021 2020

All Presentation (2 results) (of which Int'l Joint Research: 2 results)

  • [Presentation] Multi-parameter machine-inverter co-design for energy-efficient electric drives2021

    • Author(s)
      Jaedon Kwak, Alberto Castellazzi, Taketsune Nakamura
    • Organizer
      ICEMS2021 (submitted for review - review ongoing)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Split-Mid-Point Modular Design for Low-Load Efficiency Boost in WBG Power Converters2020

    • Author(s)
      Yu Shiogai, Alberto Castellazzi, Takashi Hikihara
    • Organizer
      ECCE Asia 2021
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2022-04-19  

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