Jan. 2010, IEEE PES Japan Chapter 学生優秀論文賞, IEEE PES Japan Chapter
International academic award

〔Major achievements〕Estimation method of the horizontal global solar radiation using short-circuit current and open-circuit voltage of PV module　　　　　　　　　　　　　　　
Kosuke Uchida; Kazuhito Tomita; Sayaka Suzuki, Lead, Japan Solar Energy Society
Journal of Japan Solar Energy Society, 31 Mar. 2022, [Reviewed]

Development of a cordless electric impact driver with Li-ion capacitor pack as an energy storage device
Kosuke Uchida; Takatoshi Hayashi; Tadashi Tanaka, Lead, Elsevier
Journal of Energy Storage, 10 Jun. 2020, [Reviewed]

Optimal Scheduling Method of Controllable Loads in Smart Home Considering Re-Forecast and Re-Plan for Uncertainties　　　　　　　　　　　　　　　
Akihiro Yoza; Kosuke Uchida; Shantanu Chakraborty; Narayanan Krishna; Mitsunaga Kinjo; Tomonobu Senjyu; Zengfeng Yan, MDPI
Applied Science, Sep. 2019, [Reviewed]

LC直列回路方式セル電圧均等化回路における蓄電セル電圧の大小関係推定を利用した均等化時間低減法
佐藤 大記; 星 伸一; 内田 晃介,

The authors have proposed a cell voltage equalizer with an LC series circuit in a previous work. The proposed circuit, however, has the disadvantage that the equalization time tends to be longer than that of other conventional equalizers. Therefore, the authors have studied some control methods to reduce the equalization time. This paper proposes a novel equalization time reduction method using the magnitude relation of each cell voltage estimated from the equalization current for the proposed equalizer. The proposed method can reduce the equalization time without an additional voltage sensor, so the size of the equalizer is not changed and the cost is not higher than an equalizer using the conventional control method. In addition, the characteristics and the effectiveness of the proposed method were verified by the simulations and the experiments. It was confirmed that the proposed method could reduce the equalization time to about 67.7% of that of the conventional control method by the experiments.

, 一般社団法人 電気学会
電気学会論文誌Ｄ（産業応用部門誌）, Jun. 2019, [Reviewed]

三相インターリーブ方式双方向昇降圧型DC-DCコンバータの直流リンク電流検出によるインダクタ電流推定法
水主村 賢吾; 星 伸一; 内田 晃介; 秋山 和成; 樋口 久,

In interleaved DC-DC converters, current control is required to solve the problem of unbalanced inductor current. Generally, the same number of current sensors as the number of phases are required for inductor current control, and it increases the cost and circuit volume. In previous work, inductor current control of three-phase interleaved bidirectional boost converters was achieved by high-side DC-link current detection using a current sensor. This paper proposes an inductor current estimation method for three-phase interleaved bidirectional buck-boost converters using a current sensor on a DC bus. In addition, the effectiveness of the proposed method is verified by experimental results. As a result, this paper shows that each inductor current can be estimated with our proposed method in bidirectional buck-boost operation. Experimental results showed that the proposed method could estimate the inductor current with an error rate of 0.146% or less.

, 一般社団法人 電気学会
電気学会論文誌Ｄ（産業応用部門誌）, May 2019, [Reviewed]

電磁誘導型非接触給電システム用二次側コンバータのスイッチング周波数制御による高効率化手法　　　　　　　　　　　　　　　
太田涼介; 星伸一; 内田晃介, 電気学会
電気学会論文誌D, Feb. 2017, [Reviewed]

Multi-Objective Optimization for Equipment Capacity in Off-Grid Smart House
Y.Miyazato,S.Tobaru; K. Uchida; C. C. Muarapaz; A. M. Howlader; T. Senjyu, Recently, the off-grid smart house has been attracting attention in Japan for considering global warming. Moreover, the selling price of surplus power from the renewable energy system by Feed-In Tariff (FIT) has declined. Therefore, this paper proposes an off-grid smart house with the introduced Photovoltaic (PV) system, Solar Collector (SC) system, Hot Water Heat Pump (HWHP), fixed battery and Electric Vehicle (EV). In this research, a multi-objective optimization problem is considered to minimize the introduced capacity and shortage of the power supply in the smart house. It can perform the electric power procurement from the EV charging station for the compensation of a shortage of power supply. From the simulation results, it is shown that the shortage of the power supply can be reduced by the compensation of the EV power. Furthermore, considering the uncertainty for PV output power, reliable simulation results can be obtained., MDPI AG
Sustainability, Jan. 2017, [Reviewed]

Optimal Operation Method of Smart House by Controllable Loads based on Smart Grid Topology　　　　　　　　　　　　　　　
A. Yoza; K. Uchida; A. Yona; T. Senjyu
Emerging Electric Power Systems, Aug. 2013, [Reviewed]

日射量および給湯負荷に応じた太陽熱利用電気温水器の運転方法に関する一検討
内田 晃介; 千住 智信; 與那 篤史; 浦崎 直光, 日本太陽エネルギー学会
太陽エネルギー = Solar energy, 30 Nov. 2012, [Reviewed]

A Study on Energy Reduction of Solar Desiccant Air-Conditioning System　　　　　　　　　　　　　　　
K. Uchida; T. Senjyu; A. Yona; N. Urasaki
Journal of International Council on Electrical Engineering, Jan. 2012, [Reviewed]

長時間先日射量予測による大規模太陽光発電設備の最適運用計画
與那 篤史; 内田 晃介; 千住 智信; 舟橋 俊久, Photovoltaic (PV) systems are rapidly gaining acceptance as some of the best alternative energy sources. Usually the power output of PV system fluctuates depending on weather conditions. In order to control the fluctuating power output for PV system, it requires control method of energy storage system. This paper proposes an optimization approach to determine the operational planning of power output for PV system with battery energy storage system (BESS). This approach aims to obtain more benefit for electrical power selling and to smooth the fluctuating power output for PV system. The optimization method applies genetic algorithm (GA) considering PV power output forecast error. The forecast error is based on our previous works with the insolation forecasting at one day ahead by using weather reported data, fuzzy theory and neural network(NN). The validity of the proposed method is confirmed by the computer simulations., 一般社団法人 電気学会
電気学会論文誌C, 01 Oct. 2011, [Reviewed]

Robust Position Control for Ultrasonic Motor Using Variable Structure System Observer in Non-linear Observer
S. Odomari; N. T. Hieu; K. Uchida; T. Senjyu; A. Yona, The intrinsic properties of an ultrasonic motor (high torque for low speed, high static torque, compact in size, no electromagnetic interference, etc.) offer great advantages for industrial applications. However, when load torque is applied, a dead-zone occurs in control input. Therefore, a sliding-mode controller, which is a non-linear controller, is adopted for the ultrasonic motor. The state quantities, such as acceleration, speed, and position, are needed to apply the sliding-mode controller for position control. However, a rotary encoder causes quantization errors in the speed information. This article presents a robust position control method for an ultrasonic motor by using a variable structure system observer. The state variables for the sliding-mode controller are estimated by the variable structure system observer. A small, low-cost, and good response sliding-mode controller is designed in this work by using a microcomputer that is essential in an embedded system for the development of industrial equipment. The effectiveness of the proposed method is verified by experimental results., TAYLOR & FRANCIS INC
Electric Power Components and Systems, Oct. 2011, [Reviewed]

A New Phase Detection Method by Using Kalman Filter
H. Yamauchi; K. Uchida; A. Yona; T. Senjyu, This paper proposes a phase detection method for harmonics and unbalanced voltage conditions. The proposed method uses harmonics and unbalanced voltage compensation circuit in addition to basic PLL (Phase Locked Loop) circuit. In the harmonic compensation circuit, the harmonic voltage component are eliminated from the input voltages using specific harmonic detection method. Besides, frequency information of power system used in the specific harmonic detection method is estimated by an extended complex Kalman filter. In the unbalanced voltage compensation circuit, the input voltage is normalized after the calculated positive sequence component. By means of the proposed method, excellent phase detection performance can be achieved under harmonics and unbalanced voltage conditions. Moreover, detection of positive sequence voltage component becomes possible under voltage drop conditions due to faults in power systems. The effectiveness of the proposed method is verified by simulation results. © 2011 De Gruyter. All rights reserved.
Emerging Electric Power Systems, Oct. 2011, [Reviewed]

Optimal Operation by Controllable Loads Based on Smart Grid Topology Considering Insolation Forecasted Error
Kenichi Tanaka; Kosuke Uchida; Kazuki Ogimi; Tomonori Goya; Atsushi Yona; Tomonobu Senjyu; Toshihisa Funabashi; Chul-Hwan Kim, From the perspective of global warming mitigation and depletion of energy resources, renewable energy such as wind generation (WG) and photovoltaic generation (PV) are getting attention in distribution systems. Additionally, all electric apartment houses or residence such as dc smart houses are increasing. However, due to the fluctuating power from renewable energy sources and loads, supply-demand balancing of power system becomes problematic. The smart grid is a solution to this problem. This paper presents a methodology for optimal operation of a smart grid to minimize the interconnection point power flow fluctuation. To achieve the proposed optimal operation, we use distributed controllable loads such as battery and heat pump. By minimizing the interconnection point power flow fluctuation, it is possible to reduce the electric power consumption and the cost of electricity. This system consists of a photovoltaic generator, heat pump, battery, solar collector, and load. To verify the effectiveness of the proposed system, results are used in simulation presented., IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
IEEE TRANSACTIONS ON SMART GRID, Sep. 2011, [Reviewed]

Coordinated Control of Energy Storage System and Diesel Generator in Isolated
T. Goya; K. Uchida; Y. Kinjo; T. Senjyu; A. Yona; T. Funabashi, Nowadays, renewable energy systems such as wind turbine generators and photovoltaic systems are introduced to power systems. However, the renewable energy system is influenced by weather conditions, and the generated power of the renewable energy system is deviated. For the provision of deviated power, the battery energy storage system is introduced to suppress the deviation of the frequency and voltage in power system. However, it needs the large capacity of a battery system, which increases the capital cost. In this paper, we propose a coordinated control strategy between the diesel generator and the battery system to reduce the capital cost of battery, inverter capacity and storage capacity. The proposed control system incorporates the H-infinity control theory, which enables intuitive controller design in frequency domain. Effectiveness of the proposed control system is validated by simulation results. © 2011 Berkeley Electronic Press. All rights reserved.
Electric Power Components and Systems,, 13 Jan. 2011

PV・SCを用いたDCエコハウスの最適運用法　　　　　　　　　　　　　　　
與那篤史; 長木勇介; 内田晃介; 千住智信
太陽エネルギー = Solar energy, 31 May 2010, [Reviewed]

Stochastic inequality constrained closed-loop model-based predictive control of MW-class wind generating system in the electric power supply
E. B. Muhando; T. Senjyu; K. Uchida; H. Kinjo; T. Funabashi, Wind turbines have become the most cost-effective renewable energy systems available today and are now completely competitive with essentially all conventional generation systems. However, wind stochasticity results in fluctuations in output power as well as undesirable dynamic loading of the drive train during high turbulence. A model-based predictive control strategy for the field-oriented control of a doubly fed induction generator is presented. The control region is defined over two wind profiles: average wind speeds below and above equipment rating, subject to assigned constraints of the maximum allowable system frequency fluctuations and the power limit of the wind generating system. To meet the control objectives of maximising energy capture and alleviation of drive train fatigue loads, each of the WGS component blocks is modelled separately so as to explore the associated trade-offs. Simulations, carried out under a Matlab (R) environment, serve to verify that the proposed paradigm performs better than the classical linear proportional-integral controller in achieving the regulation of torsional dynamics while maintaining optimal operation., INST ENGINEERING TECHNOLOGY-IET
IET RENEWABLE POWER GENERATION, Jan. 2010, [Reviewed]

Parameter Identification of Wind Turbine for Maximum Power-point Tracking Control
Abdul Motin Howlader; Naomitsu Urasaki; Kousuke Uchida; Atsushi Yona; Tomonobu Senjyu; Chul-Hwan Kim; A. Y. Saber, In this article, a technique is proposed for maximum power-point tracking control of a wind generation system. The optimal operation speed to which the wind turbine output power maximizes is determined with parameters identified by an iterative least squares technique. The effectiveness of the maximum point tracking control with identified parameters of wind turbine is verified by computer simulation. In addition, the article discusses how to address rotational speed and output power in the case when the wind turbine parameters used for determining the optimum rotational speed have errors., TAYLOR & FRANCIS INC
ELECTRIC POWER COMPONENTS AND SYSTEMS, 2010, [Reviewed]

亜熱帯地域における熱電ハイブリッドシステムの導入効果
内田 晃介; 千住 智信; 與那 篤史; 浦崎 直光, 日本太陽エネルギー学会
太陽エネルギー = Solar energy, 30 Nov. 2009, [Reviewed]

PVモジュールを用いた水平面全天日射量推定における直散分離モデルと散乱モデルについての検討　　　　　　　　　　　　　　　
鈴木沙耶香、内田晃介
令和4年度電気学会東京支部茨城支所研究発表会, 07 Mar. 2023
20230306, 20230307

負荷インピーダンス推定を用いた電動工具向けマルチ定格バッテリーのワイヤレス充電戦略　　　　　　　　　　　　　　　
篠塚遼太郎、内田晃介、田中正志
令和4年度電気学会東京支部茨城支所研究発表会, 06 Mar. 2023
20230306, 20230307

中継コイルを用いた100W級電磁誘導方式非接触給電システムの設計手法に関する一研究　　　　　　　　　　　　　　　
栗原里和、内田晃介
令和4年度電気学会東京支部茨城支所研究発表会, 17 Dec. 2022

一次側インバータの制御に過電圧・過電流を防止する機能を実装したワイヤレス電動工具のネジ緩め試験　　　　　　　　　　　　　　　
篠塚遼太郎、内田晃介
令和4年度電気学会東京支部茨城支所研究発表会, 17 Dec. 2022

曇天日における斜面全天日射量から水平面全天日射量を推定する２種類の直散分離モデルの比較　　　　　　　　　　　　　　　
鈴木沙耶香、内田晃介
令和4年度電気学会東京支部茨城支所研究発表会, 17 Dec. 2022

ラズベリーパイを用いた日射観測装置の開発　　　　　　　　　　　　　　　
益田武留、長谷川湧哉、海野勇紀、内田晃介
令和4年度電気学会東京支部茨城支所研究発表会, 17 Dec. 2022

学生食堂への太陽光発電及びヒートポンプ給湯器の導入効果の検討　　　　　　　　　　　　　　　
長谷川湧哉、内田晃介
令和4年度電気学会東京支部茨城支所研究発表会, 17 Dec. 2022

一次側インバータの制御に過電圧・過電流を防止する機能を実装したワイヤレス電動工具のねじ締め試験
篠塚遼太郎、内田晃介、田中正志
2022年電気学会産業応用部門大会, 30 Aug. 2022, 電気学会
20220830, 20220901

2種類の直散分離モデルを用いた斜面全天日射量から水平面全天日射量推定の比較
鈴木沙耶香,内田晃介
電力技術・電力系統技術合同研究会, Aug. 2022, 電気学会
20220824, 20220825

直列共振コンデンサを用いた電磁誘導方式非接触給電システムの 過電圧・過電流保護を目的とした制御手法の一検討　　　　　　　　　　　　　　　
篠塚遼太郎; 内田晃介; 田中正志
電力技術/電力系統技術/半導体電力変換合同研究会, 10 Mar. 2022, 電気学会
20220310, 20220311

太陽光発電モジュールの開放電圧係数を用いた全天日射量推定に関する研究　　　　　　　　　　　　　　　
内田晃介
電力技術・電力系統技術 合同研究会, 21 Sep. 2021, 電気学会
20210921, 20210922

PVモジュールより推定した斜面全天日射量から水平面全天日射量への変換に関する一研究　　　　　　　　　　　　　　　
冨田和仁、内田晃介
令和2年度電気学会東京支部茨城支所研究発表会, 06 Feb. 2021, 電気学会

The estimation of horizontal global solar radiation from the global solar radiation on tilted surfaces : The estimation results obtained from PV module considering tilt angles　　　　　　　　　　　　　　　
Kazuhito Tomita; Kosuke Uchida
電力技術研究会, 04 Feb. 2021

設置角を考慮したPVモジュールからの日射量推定　　　　　　　　　　　　　　　
高柿黎; 内田晃介
第27回電気学会東京支部茨城支所研究発表会, Dec. 2019, 電気学会

太陽光発電システムの設置条件を考慮した日射量推定手法に関する一検討　　　　　　　　　　　　　　　
内田晃介
令和元年度電気学会電力エネルギー部門大会, Sep. 2019, 電気学会

太陽光パネルを用いた秒オーダー日射推定に関する一研究　　　　　　　　　　　　　　　
内田晃介
第26回電気学会東京支部茨城支所研究発表会, Dec. 2018, 電気学会

データシートを用いた太陽電池モジュールの温度及び日射強度の推定　　　　　　　　　　　　　　　
平岡学之; 内田晃介; 星伸一
電気学会 新エネルギ－・環境研究会, Feb. 2018

出力制御下における太陽電池モジュール間の温度平均化　　　　　　　　　　　　　　　
平岡学之; 内田晃介; 星信一
電気学会 平成29年スマートファシリティ研究会, Jan. 2017

SBH-FCを有するスマートハウスの最適運転に関する一検討　　　　　　　　　　　　　　　
内田晃介
電気学会 電力技術・電力系統技術・半導体電力変換合同研究会, Mar. 2016

Study on Fair Battery Control in Residential Sector Considering with Grid Operator's Request　　　　　　　　　　　　　　　
K. Uchida; E. Arai; M. Koike; I. Muto; T. Sadamoto; T. Ishizaki; Y. Ueda; J. Imura
SICE Annual Conference, Jul. 2015

PV出力予測を用いた住宅群の公平なピークカット負担を目的とした充放電手法の検討　　　　　　　　　　　　　　　
内田晃介; 植田譲; 大関崇; 井村順一
電気学会 新エネルギー環境メタボリズム社会環境システム合同研究会, Jan. 2015

Study on BESS Operation Planning Considering with SOC of Individual Houses for Harmonized EMS　　　　　　　　　　　　　　　
K. Uchida; Y. Ueda
The 6th World Conference on Photovoltaic Energy Conversion 2014, Nov. 2014

Study on SOC Schedule and BESS Control for Harmonized EMS in Power Grid with PV　　　　　　　　　　　　　　　
K. Uchida; Y. Ueda
The 2014 IEEE Innovative Smart Grid Technologies, May 2014

Optimum Design of PV and SWH for All-Electric House　　　　　　　　　　　　　　　
K. Uchida; T. Senjyu; A. Yona; N. Urasaki
The International Conference on Renewable Energy Research and Applications, Nov. 2012

全電化住宅における太陽エネルギー利用機器の最適設備容量に関する一検討　　　　　　　　　　　　　　　
内田晃介; 千住智信
電気学会九州支部沖縄支所講演会, 2012

予測誤差を考慮したスマートハウスにおける可制御負荷の最適運用法　　　　　　　　　　　　　　　
與座明泰; 内田晃介; 與那篤史; 千住智信
電気学会九州支部沖縄支所講演会, 2012

スマートハウスにおける太陽電池および蓄電池の設備拡張計画最適化　　　　　　　　　　　　　　　
與座明泰; 内田晃介; 與那篤史; 千住智信
電気関係学会九州支部連合大会資料, 2012

EVを導入したスマートハウスにおける可制御負荷の最適運用法　　　　　　　　　　　　　　　
與座明泰; 内田晃介; 與那篤史; 千住智信
電気学会 電力技術・電力系統技術合同研究会, 2012

EVを搭載した防災対応型スマートハウスの自立運転　　　　　　　　　　　　　　　
山内勇人; 内田昇介; 與那篤史; 千住智信
電気学会 電力技術・電力系統技術・半導体電力変換合同研究会, 2012

A Study on Energy Reduction of Solar Desiccant Air-Conditioning System　　　　　　　　　　　　　　　
K. Uchida; T. Senjyu; A. Yona; N. Urasaki
17th International Conference on Electrical Engineering, Jul. 2011

ヒートポンプ/ガスエンジンを導入したスマートハウスにおける運用コストの比較検討　　　　　　　　　　　　　　　
與座明泰; 内田晃介; 與那篤史; 千住智信
電気学会九州支部沖縄支所講演会, 2011

オフィスビルにおける太陽熱利用デシカント空調システムのエネルギー削減効果　　　　　　　　　　　　　　　
内田晃介; 千住智信; 與那篤史; 浦崎直光
電気学会 電力・エネルギー部門大会, 2011

Optimal Operation of Solar Collector System Complied with Hot Water Supply Load　　　　　　　　　　　　　　　
K Uchida; T. Senjyu; A. Yona; N. Urasaki
16th International Conference on Electrical Engineering, Jul. 2010

Effect of Energy Conservation by Adopted PV/SC System inSubtropical Regions　　　　　　　　　　　　　　　
K. Uchida; T. Senjyu; A. Yona; N. Urasaki
IEEE Conference on Industrial Electronics and Applications, Jun. 2010, [Invited]

モンテカルロシミュレーションを用いた太陽熱利用給湯器の省エネルギー効果に関する一検討　　　　　　　　　　　　　　　
内田晃介; 千住智信; 與那篤史; 浦崎直光
電気学会 電力・エネルギー部門大会, 2010

Installation Effect by Solar Heater System using Solar Radiation Forecasting　　　　　　　　　　　　　　　
K. Uchida; T. Senjyu; N. Urasaki; A. Yona
IEEE Transmission & Distribution Conference in Asia 2009, Oct. 2009

沖縄県における太陽エネルギー利用システムの導入効果
内田 晃介; 千住 智信
電気関係学会九州支部連合大会講演論文集, 2009, 電気・情報関係学会九州支部連合大会委員会

日射量予測による太陽熱利用給湯システムの導入効果　　　　　　　　　　　　　　　
内田晃介; 千住 智信; 浦崎直光; 與那篤史
電気学会 電力・エネルギー部門大会, 2009

全電化住宅における熱電ハイブリッドシステムの導入効果　　　　　　　　　　　　　　　
内田晃介; 千住智信
電気学会 電力・エネルギー部門大会, 2009

次世代電動工具ワイヤレス給電システムの開発　　　　　　　　　　　　　　　
Apr. 2021 - Mar. 2023

次世代電動工具用充電器の開発　　　　　　　　　　　　　　　
Apr. 2020 - Mar. 2021

特願2022-01135, 電池パックおよび電気機器
発明者:石川祐樹・松浦生・田中正志・内田晃介

特開2021-119731, 特願2020-13269, コードレス作業機器およびアダプタ
発明者:石川祐樹、西河智雅、田中正志、内田晃介