Marine Engineering Faculty in Tokyo University of Marine Science and Technology
Electric Power System Lab. 
Estimation and evaluation of the battery system applying to onboard AC electric system for improving fuel economy
Journal paper
- Jan, 2026
- Norichika Nagayama,Hiroyasu Kifune: "Impact Of Rated Power of Power Converter in Energy Storage System on Fuel Consumption to Improve Efficiency of Onboard Generators", IEEJ Transaction on Electrical and Electronic Engineering Vol.21,No.1,2026,Access DOI: 1002/TEE.70132
- Dec, 2020
- HIROYASU KIFUNE, MEHDI KARBALAYE, HIDETSUGU SASAKI: "Efficiency Estimation of Synchronous Generators for Marine Applications and Verification With Shop Trial Date and Real Ship Operation Data", IEEE Access DOI: 10. 1109/ACCESS. 2020. 3033404 pp. 195541-195550
conference
- Sep, 2023
- Norichika Nagayama,Hiroyasu Kifune, "Fuel Saving Effects Using ESS for Shipbord Generators and Influence of Load Demand Variations", The 93st Annual Marine Engineering Accademic Conference hosted by Japan Institute of Marine Engineering(302)pp.262-262
- Dec, 2022
- Norichika Nagayama,Hiroyasu Kifune: "Fuel Saving Effects Using ESS
for Shipboard Generators and Influence of Load Demand Variations",
IEEJ Research meeting materials(Semiconductor power exchange)SPC-22-226
- Oct, 2020
- Hiroyasu Kifune, Kazunori Hiraga, Shohei Komeda: "Efficiency estimation
method of synchronous generator in low power factor condition", The
90th Annual meeting The JAPAN INSTITUTE OF MARINE ENGINEERING (323) pp.
271-272
- Apr, 2019
- Hiroyasu Kifune, Mehdi Zadeh: "Overview of Electric Ship Propulsion
and Fuel Consumption", Journal of the JAPAN INSTITUTE OF MARINE ENGINEERING,
Vol. 54, No. 4, pp. 95-100
Invited lecture
- May, 2022
- Investing R&D Committee on Elemental Technology Related to Electric Drive Assisted System for Mobility: "Development Trend and Prospect of Elemental Technology for Electric Drive Assisted System for Mobility", IEEJ Technical Report