2020 Fiscal Year Annual Research Report
Novel High Reliability DC/DC Modular Multilevel Converter as a Power Router for Next Generation Medium Voltage DC Power Network
| Project/Area Number |
19K14963
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| Research Institution | Kyoto Institute of Technology |
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Principal Investigator |
黄 品諭 京都工芸繊維大学, 電気電子工学系, 助教 (70835313)
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| Project Period (FY) |
2019-04-01 – 2021-03-31
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| Keywords | Ripple Cancel / Multilevel Converter / Medium voltage / Solid state transformer / Reliability / Energy management / DC microgrid / DAB/TAB |
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| Outline of Annual Research Achievements |
Future medium voltage DC distributed microgrid is expected to be a high reliability power system. The power converters are one of the most critical parts in terms of failure rate, lifetime, etc. Especially, the DC-link capacitor has highest failure ratio because of the high ripple current.
To solve these problems, three prototypes of power routers with different input/output voltage ranges were proposed and implemented. All proposed converters have the ripple cancel characteristic of DC-link capacitors. The ripple current of DC-link capacitors is reduced to nearly zero. Thus, the reliability improvement of power routers in DC power distributed system can be expected. In addition, the modular multilevel configuration was proposed for future 6.6kV to 400V medium voltage applications.
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Research Products
(6 results)
