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Kazuhiro Umetani
Kazuhiro Umetani
Associate Professor, Okayama University
Verified email at okayama-u.ac.jp
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Year
A current sharing method utilizing single balancing transformer for a multiphase LLC resonant converter with integrated magnetics
M Noah, S Endo, H Ishibashi, K Nanamori, J Imaoka, K Umetani, ...
IEEE Journal of Emerging and Selected Topics in Power Electronics 6 (2), 977-992, 2017
642017
Evaluation of the Lagrangian method for deriving equivalent circuits of integrated magnetic components: A case study using the integrated winding coupled inductor
K Umetani, S Arimura, T Hirano, J Imaoka, M Yamamoto
2013 IEEE Energy Conversion Congress and Exposition, 495-502, 2013
422013
Characteristics analysis and performance evaluation for interleaved boost converter with integrated winding coupled inductor
J Imaoka, M Yamamoto, K Umetani, S Arimura, T Hirano
2013 IEEE Energy Conversion Congress and Exposition, 3711-3718, 2013
392013
Magnetic Design and Experimental Evaluation of a Commercially Available Single Integrated Transformer in Three-Phase LLC Resonant Converter
M Noah, S Kimura, J Imaoka, W Martinez, S Endo, M Yamamoto, ...
IEEE Transactions on Industry Applications 54 (6), 6190-6204, 2018
352018
Lagrangian dynamics model and practical implementation of an integrated transformer in multi‐phase LLC resonant converter
M Noah, K Umetani, J Imaoka, M Yamamoto
IET Power Electronics 11 (2), 339-347, 2018
352018
Measurement of the common source inductance of typical switching device packages
K Aikawa, T Shiida, R Matsumoto, K Umetani, E Hiraki
2017 IEEE 3rd International Future Energy Electronics Conference and ECCE …, 2017
322017
A novel three-phase LLC resonant converter with integrated magnetics for lower turn-off losses and higher power density
M Noah, S Kimura, S Endo, M Yamamoto, J Imaoka, K Umetani, ...
2017 IEEE Applied Power Electronics Conference and Exposition (APEC), 322-329, 2017
322017
Prevention of oscillatory false triggering of GaN-FETs by balancing gate-drain capacitance and common-source inductance
K Umetani, R Matsumoto, E Hiraki
IEEE Transactions on Industry Applications 55 (1), 610-619, 2018
282018
Total volume evaluation of high‐power density non‐isolated DC–DC converters with integrated magnetics for electric vehicles
W Martinez, C Cortes, M Yamamoto, J Imaoka, K Umetani
IET Power Electronics 10 (14), 2010-2020, 2017
282017
Analytical investigation on design instruction to avoid oscillatory false triggering of fast switching SiC-MOSFETs
Y Sugihara, K Nanamori, S Ishiwaki, Y Hayashi, K Aikawa, K Umetani, ...
2017 IEEE Energy Conversion Congress and Exposition (ECCE), 5113-5118, 2017
272017
Autonomous system concept of multiple-receiver inductive coupling wireless power transfer for output power stabilization against cross-interference among receivers and …
M Ishihara, K Fujiki, K Umetani, E Hiraki
IEEE Transactions on Industry Applications 57 (4), 3898-3910, 2021
262021
Straightforward measurement method of common source inductance for fast switching semiconductor devices mounted on board
K Umetani, K Aikawa, E Hiraki
IEEE Transactions on Industrial Electronics 64 (10), 8258-8267, 2017
262017
Analysis of coupled-inductor configuration for an interleaved high step-up converter
W Martinez, J Imaoka, Y Itoh, M Yamamoto, K Umetani
2015 9th International Conference on Power Electronics and ECCE Asia (ICPE …, 2015
252015
Automatic active compensation method of cross-coupling in multiple-receiver resonant inductive coupling wireless power transfer systems
M Ishihara, K Fujiki, K Umetani, E Hiraki
2019 IEEE Energy Conversion Congress and Exposition (ECCE), 4584-4591, 2019
242019
A generalized method for Lagrangian modeling of power conversion circuit with integrated magnetic components
K Umetani
IEEJ Transactions on Electrical and Electronic Engineering 7 (S1), S146-S152, 2012
242012
A design guideline of parasitic inductance for preventing oscillatory false triggering of fast switching GaN‐FET
K Umetani, K Yagyu, E Hiraki
IEEJ Transactions on Electrical and Electronic Engineering 11, S84-S90, 2016
222016
Driving circuit
K Umetani
US Patent 8,723,564, 2014
222014
Optimization of the balance between the gate-drain capacitance and the common source inductance for preventing the oscillatory false triggering of fast switching GaN-FETs
R Matsumoto, K Umetani, E Hiraki
2017 IEEE Energy Conversion Congress and Exposition (ECCE), 405-412, 2017
212017
Strategy of topology selection based on quasi-duality between series–series and series–parallel topologies of resonant inductive coupling wireless power transfer systems
M Ishihara, K Umetani, E Hiraki
IEEE Transactions on Power Electronics 35 (7), 6785-6798, 2019
202019
Design optimization method for the load impedance to maximize the output power in dual transmitting resonator wireless power transfer system
T Koyama, K Umetani, E Hiraki
IEEJ Journal of Industry Applications 7 (1), 49-55, 2018
202018
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Articles 1–20