Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
EE |
2024-03-11 10:40 |
Tokyo |
(Primary: On-site, Secondary: Online) |
Experimental Comparison of Soft Charging Operation in Always-Dual-Path Hybrid DC-DC Converter Katsuhiro Hata (Univ. of Tokyo), Shinsaku Tanaka, Toru Ashikaga, Yasuhiro Rikiishi (Sanken Electric) EE2023-61 |
An always-dual-path hybrid (ADPH) DC-DC converter with soft charging simultaneously reduces inductor current and suppres... [more] |
EE2023-61 pp.26-31 |
EE, WPT (Joint) |
2023-10-05 13:00 |
Osaka |
(Primary: On-site, Secondary: Online) |
[Invited Talk]
Design and Implementation of Near-Field Wireless Power Transfer Systems for e-Mobility Katsuhiro Hata (UTokyo) WPT2023-19 |
System design and implementation related to wireless power transfer technology for e-mobility, such as electric vehicles... [more] |
WPT2023-19 p.1 |
EE, WPT (Joint) |
2023-10-05 13:50 |
Osaka |
(Primary: On-site, Secondary: Online) |
[Invited Talk]
Optimal Locaion Model of In-motion Wireless Power Transfer System Based on Discrete Optimization
-- Numerical Examples in Urban-scale and Regional-scale Regions -- Yudai Honma, Daisuke Hasegawa, Katsuhiro Hata, Takashi Oguchi (Univ. of Tokyo) WPT2023-20 |
The popularization of electric vehicles (EVs) is limited by their driving range and long charging times. To address this... [more] |
WPT2023-20 pp.2-7 |
SDM, ICD, ITE-IST [detail] |
2023-08-03 14:40 |
Hokkaido |
Hokkaido Univ. Multimedia Education Bldg. 3F (Primary: On-site, Secondary: Online) |
Real-Time Gate Current Change Gate Driver IC to Adapt to Operating Condition Variations of SiC MOSFETs Dibo Zhang, Kohei Horii, Katsuhiro Hata, Makoto Takamiya (UTokyo) SDM2023-52 ICD2023-31 |
A digital gate driver IC with real-time gate current (IG) change by sensing drain current (ID) is applied to SiC MOSFETs... [more] |
SDM2023-52 ICD2023-31 pp.70-73 |
SDM, ICD, ITE-IST [detail] |
2023-08-03 15:05 |
Hokkaido |
Hokkaido Univ. Multimedia Education Bldg. 3F (Primary: On-site, Secondary: Online) |
Gate Driver IC with Fully Integrated Overcurrent Protection Function by Measuring Gate-to-Emitter Voltage Haifeng Zhang, Dibo Zhang, Hiromu Yamasaki, Katsuhiro Hata (Univ. of Tokyo), Keiji Wada (Tokyo Metropolitan Univ.), Kan Akatsu (Yokohama National Univ.), Ichiro Omura (Kyusyu Institute of Technology), Makoto Takamiya (Univ. of Tokyo) SDM2023-53 ICD2023-32 |
[more] |
SDM2023-53 ICD2023-32 pp.74-78 |
WPT |
2022-03-07 15:50 |
Kyoto |
(Primary: On-site, Secondary: Online) |
Basic study of wireless power transmission using electric field coupling over Multi-Layer Insulation and its application to lunar exploration rovers Koki Ichiyanagi, Takehiro Imura, Yoichi Hori (TUS), Katsuhiro Hata (UT), Sayuri Honda, Syuhei Shimada (JAXA) WPT2021-30 |
[more] |
WPT2021-30 pp.46-49 |
SDM |
2020-11-20 10:30 |
Online |
Online |
[Invited Talk]
Power Device Degradation Estimation by Machine Learning of Gate Waveforms Hiromu Yamasaki, Koutaro Miyazaki, Yang Lo, A. K. M. Mahfuzul Islam, Katsuhiro Hata, Takayasu Sakurai, Makoto Takamiya (Univ. of Tokyo) SDM2020-29 |
A method to detect bonding wire lift-off of SiC MOSFETs using machine learning from the gate voltage waveform is propose... [more] |
SDM2020-29 pp.32-35 |
WPT |
2020-03-06 10:05 |
Kyoto |
(Cancelled but technical report was issued) |
Comparative Research on PV Powered Lunar Rover Wireless Power Transfer System MPPT Control with Sweep and Metaheuristic Methods Bingcheng Ji, Mingyang Chen, Katsuhiro Hata (UTokyo), Takehiro Imura (TUScience), Yoichi Hori (UTokyo), Sayuri Honda, Shuhei Shimada, Osamu Kawasaki (JAXA) WPT2019-60 |
[more] |
WPT2019-60 pp.15-20 |
WPT, EE (Joint) |
2019-10-09 11:45 |
Shiga |
Ryukoku Extension Center, Ryukoku University |
PV MPPT Control under Partial Shading Conditions in Lunar Rover Wireless Power Transfer System Bingcheng Ji, Katsuhiro Hata (UTokyo), Takehiro Imura (TUScience), Yoichi Hori (UTokyo), Sayuri Honda, Shuhei Shimada, Osamu Kawasaki (JAXA) WPT2019-29 |
[more] |
WPT2019-29 pp.13-18 |
WPT, EE (Joint) |
2019-10-09 12:05 |
Shiga |
Ryukoku Extension Center, Ryukoku University |
Frequency Optimization of Lunar Rover Wireless Power Transfer System with Multi-layer Insulation Mingyang Chen, Bingcheng Ji, Katsuhiro Hata (UTokyo), Takehiro Imura (TUS), Hiroshi Fujimoto, Yoichi Hori (UTokyo), Shuuhei Shimada., Sayuri Honda, Osamu Kawasaki (JAXA) WPT2019-30 |
In the lunar rover wireless power transfer system, the heat leakage caused by the wire connection between the solar pane... [more] |
WPT2019-30 pp.19-24 |
WPT, MW |
2019-04-22 13:30 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
Study on Power Factor of Wireless Power Transfer Systems with Resonance Frequency Mismatch Helanka Weerasekara, Katsuhiro Hata, Takehiro Imura, Yoichi Hori (Univ. of Tokyo) WPT2019-2 MW2019-2 |
Wireless Power Transfer (WPT) for Electric Vehicles (EV) is one of an admirable solution to some obstacles of charging E... [more] |
WPT2019-2 MW2019-2 pp.7-11 |
WPT, EE (Joint) |
2018-10-04 09:20 |
Kyoto |
Kyoto Univ. Uji Campus |
A Comparison Study of Transmission Efficiency and Transmitting and Receiving Power with Constant Power Supply in Wireless Power Transfer via Magnetic Resonant Coupling Haruko Nawada, Katsuhiro Hata, Takehiro Imura, Hiroshi Fujimoto, Yoichi Hori (The Univ. of Tokyo) WPT2018-37 |
Previously, in dynamic wireless power transfer, constant voltage control of the transfer-side has been performed so that... [more] |
WPT2018-37 pp.45-50 |
WPT, EE (Joint) |
2018-10-04 13:20 |
Kyoto |
Kyoto Univ. Uji Campus |
Fundamental Study on Wireless Power Transfer to Unsprung Receiver Coil Using In-Tire Magnetic Circuit Takashi Utsu, Kensuke Hanajiri, Katsuhiro Hata, Osamu Shimizu, Takehiro Imura, Hiroshi Fujimoto, Yoichi Hori (The Univ. of Tokyo), Keizo Akutagawa (Bridgestone), Daisuke Gunji (NSK ltd.) WPT2018-41 |
Wireless power transfer to electric vehicles has attracted a great deal of attention, however, many problems have remain... [more] |
WPT2018-41 pp.69-74 |
EE, WPT, IEE-SPC |
2018-07-03 09:50 |
Hokkaido |
Hokkaido University |
Experimental Verification of Capacitor- and Ferrite-less 85kHz Self-resonant Coil Considering Dielectric Loss for In-motion Wireless Power Transfer Yoshiaki Takahashi, Katsuhiro Hata, Takehiro Imura, Yoichi Hori (The Univ. of Tokyo) WPT2018-21 |
In magnetic resonance coupling S/S topology of wireless power transfer, low coupling can cause to breakdown the resonanc... [more] |
WPT2018-21 pp.61-66 |
EE, WPT, IEE-SPC |
2018-07-03 15:00 |
Hokkaido |
Hokkaido University |
MPPT Mode Controlled Solar Battery Assisted Lunar Rover Wireless Power Transfer System with Constant Voltage Load Experiment Bingcheng Ji, Katsuhiro Hata, Takehiro Imura, Yoichi Hori (The Univ. of Tokyo), Shuuhei Shimada, Sayuri Honda, Osamu Kawasaki, Satoshi Ichikawa (JAXA) WPT2018-27 |
For conventional Lunar rover, the solar battery module is directedly connected to rover body through wire, and at lunar ... [more] |
WPT2018-27 pp.105-110 |
MW, WPT |
2018-04-27 13:05 |
Tokyo |
Kikai-Shinko-Kaikan Building |
Comparison of Soft-Starting Methods for Suppressing Start-up Current Overshoot in Wireless Power Transfer via Magnetic Resonance Coupling Katsuhiro Hata, Takehiro Imura, Hiroshi Fujimoto, Yoichi Hori (Univ. of Tokyo) WPT2018-1 MW2018-1 |
Although in-motion wireless charging of electric vehicles has attracted a great deal of attention, its transient charact... [more] |
WPT2018-1 MW2018-1 pp.1-4 |
WPT (2nd) |
2017-12-09 - 2017-12-11 |
Overseas |
National University of Singapore(AWPT2017) |
Identification of kQ Product for Wireless Power Transfer System with Open End Coils Based on Input Impedance Measurement Katsuhiro Hata, Takehiro Imura, Yoichi Hori (The Univ. of Tokyo) |
Efficiency characteristics of wireless power transfer (WPT) via magnetic resonance coupling are determined by kQ product... [more] |
|
EE, WPT, IEE-SPC [detail] |
2017-07-27 13:50 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
Transient Analysis of Wireless Power Transfer via Magnetic Resonance Coupling at Loosely Coupled Condition and Its Application to Soft Start Operation Katsuhiro Hata, Takehiro Imura, Hiroshi Fujimoto, Yoichi Hori (Univ. of Tokyo) EE2017-16 WPT2017-21 |
A transfer function from an input voltage to an input current of wireless power transfer is characterized by resonance f... [more] |
EE2017-16 WPT2017-21 pp.43-48 |
AP, WPT (Joint) |
2017-01-19 09:20 |
Hiroshima |
Hiroshima Institute of Technology |
Simplified Measuring Method of kQ Product for Wireless Power Transfer via Magnetic Resonance Coupling Katsuhiro Hata, Takehiro Imura, Yoichi Hori (The Univ. of Tokyo) WPT2016-43 |
An efficiency characteristics of wireless power transfer via magnetic resonance coupling is expressed by $kQ$ product, w... [more] |
WPT2016-43 pp.5-10 |
EE, WPT (Joint) |
2016-10-07 09:00 |
Kyoto |
|
Maximum Efficiency Control of Wireless Power Transfer Based on Simultaneous Estimation of Generalized Secondary-Side Parameters Katsuhiro Hata, Takehiro Imura, Yoichi Hori (The Univ. of Tokyo) WPT2016-30 |
Secondary-side efficiency control for wireless power transfer systems has been proposed to simplify the primary-side str... [more] |
WPT2016-30 pp.61-66 |