Hirofumi Akagi

49.6k total citations · 20 hit papers
579 papers, 39.6k citations indexed

About

Hirofumi Akagi is a scholar working on Electrical and Electronic Engineering, Control and Systems Engineering and Electronic, Optical and Magnetic Materials. According to data from OpenAlex, Hirofumi Akagi has authored 579 papers receiving a total of 39.6k indexed citations (citations by other indexed papers that have themselves been cited), including 524 papers in Electrical and Electronic Engineering, 156 papers in Control and Systems Engineering and 71 papers in Electronic, Optical and Magnetic Materials. Recurrent topics in Hirofumi Akagi's work include Multilevel Inverters and Converters (225 papers), Silicon Carbide Semiconductor Technologies (159 papers) and HVDC Systems and Fault Protection (153 papers). Hirofumi Akagi is often cited by papers focused on Multilevel Inverters and Converters (225 papers), Silicon Carbide Semiconductor Technologies (159 papers) and HVDC Systems and Fault Protection (153 papers). Hirofumi Akagi collaborates with scholars based in Japan, Malaysia and United States. Hirofumi Akagi's co-authors include Akira Nabae, Hideaki Fujita, Makoto Hagiwara, Isao Takahashi, Satoshi Ogasawara, Shigenori Inoue, Maurício Aredes, Edson H. Watanabe, Laxman Maharjan and Nadia M. L. Tan and has published in prestigious journals such as SHILAP Revista de lepidopterología, Proceedings of the IEEE and IEEE Transactions on Industrial Electronics.

In The Last Decade

Hirofumi Akagi

558 papers receiving 37.0k citations

Hit Papers

5 papers align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

A New Neutral-Point-Clamped PWM Inverter

1981 4.1k citations Akira Nabae, Hirofumi Akagi et al. profile →
Instantaneous Reactive Power Compensators Comprising Switching Devices without Energy Storage Components

1984 2.7k citations Hirofumi Akagi, Akira Nabae et al. profile →
Instantaneous Power Theory and Applications to Power Conditioning

2006 1.8k citations Hirofumi Akagi et al. profile →
Control and Experiment of Pulsewidth-Modulated Modular Multilevel Converters

2009 1.3k citations Makoto Hagiwara, Hirofumi Akagi profile →
New trends in active filters for power conditioning

1996 1.3k citations Hirofumi Akagi profile →
Classification, Terminology, and Application of the Modular Multilevel Cascade Converter (MMCC)

2011 982 citations Hirofumi Akagi profile →
The unified power quality conditioner: the integration of series- and shunt-active filters

1998 798 citations Hideaki Fujita, Hirofumi Akagi profile →
Active Harmonic Filters

2005 766 citations Hirofumi Akagi profile →
A Bidirectional DC–DC Converter for an Energy Storage System With Galvanic Isolation

2007 622 citations Hirofumi Akagi et al. profile →
Control Strategy of Active Power Filters Using Multiple Voltage-Source PWM Converters

1986 577 citations Hirofumi Akagi, Akira Nabae et al. profile →
A Medium-Voltage Motor Drive With a Modular Multilevel PWM Inverter

2010 573 citations Makoto Hagiwara, Hirofumi Akagi et al. profile →
A Bidirectional Isolated DC–DC Converter as a Core Circuit of the Next-Generation Medium-Voltage Power Conversion System

2007 560 citations Hirofumi Akagi et al. profile →
A new approach to harmonic compensation in power systems-a combined system of shunt passive and series active filters

1990 537 citations Hirofumi Akagi, Akira Nabae et al. profile →
Control and Performance of a Transformerless Cascade PWM STATCOM With Star Configuration

2007 531 citations Hirofumi Akagi et al. profile →
A practical approach to harmonic compensation in power systems-series connection of passive and active filters

1991 497 citations Hideaki Fujita, Hirofumi Akagi profile →
Trends in active power line conditioners

1994 487 citations Hirofumi Akagi profile →
State-of-Charge (SOC)-Balancing Control of a Battery Energy Storage System Based on a Cascade PWM Converter

2009 473 citations Hirofumi Akagi et al. profile →
Multilevel Converters: Fundamental Circuits and Systems

2017 398 citations Hirofumi Akagi profile →
An approach to position sensorless drive for brushless DC motors

1991 368 citations Satoshi Ogasawara, Hirofumi Akagi profile →
Instantaneous Power Theory and Applications to Power Conditioning

2017 336 citations Hirofumi Akagi et al. profile →

Peers

Countries citing papers authored by Hirofumi Akagi

Since Specialization

Citations

This map shows the geographic impact of Hirofumi Akagi's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Hirofumi Akagi with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hirofumi Akagi more than expected).

Fields of papers citing papers by Hirofumi Akagi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hirofumi Akagi. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Hirofumi Akagi. The network helps show where Hirofumi Akagi may publish in the future.

Co-authorship network of co-authors of Hirofumi Akagi

This figure shows the co-authorship network connecting the top 25 collaborators of Hirofumi Akagi. A scholar is included among the top collaborators of Hirofumi Akagi based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Hirofumi Akagi. Hirofumi Akagi is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Low-Voltage-Ride-Through (LVRT) Performance of an HVDC Transmission System Using two Modular Multilevel Double-Star Chopper-Cells (DSCC) Converters 2016 ·IEEJ Transactions on Industry Applications ·(unknown), Hirofumi Akagi	0
2	Decoupled Control of a Modular Multilevel Cascade Converter Based on Triple-Star Bridge-Cells (MMCC-TSBC) 2013 ·IEEJ Transactions on Industry Applications ·Wataru Kawamura, Hirofumi Akagi	5
3	A Speed-Sensorless Start-Up Method for an Induction Motor Driven by a Modular Multilevel Cascade Inverter Based on Double-Star Chopper Cells (MMCI-DSCC) 2013 ·IEEJ Transactions on Industry Applications ·Yuhei Okazaki, Makoto Hagiwara, Hirofumi Akagi	3
4	Decoupled Control of a Three-Phase Modular Multilevel Cascade Converter Based on Double-Star Chopper-Cells 2012 ·IEEJ Transactions on Industry Applications ·(unknown), Hirofumi Akagi	23
5	Low-Speed Operation of a Medium-Voltage Motor Drive Using a Modular Multilevel Cascade Inverter (MMCI-DSCC) 2012 ·IEEJ Transactions on Industry Applications ·Makoto Hagiwara, Isamu Hasegawa, Hirofumi Akagi	11
6	Power Flow Analysis and DC-Capacitor Voltage Regulation for the MMCC-DSCC 2012 ·IEEJ Transactions on Industry Applications ·Hideaki Fujita, Makoto Hagiwara, Hirofumi Akagi	25
7	Discussions on Switching-Ripple Voltages on the Common DC Link of the Modular Multilevel Cascade Inverter (MMCI-DSCC) 2011 ·IEEJ Transactions on Industry Applications ·Makoto Hagiwara, (unknown), Hirofumi Akagi	4
8	A Parameters Extraction Procedure Based on Integrated Evaluation of Static and Dynamic Characteristics -Application to a pin Diode Model- 2011 ·IEEJ Transactions on Industry Applications ·Takashi Toyama, S. Tominaga, Hiroaki Urushibata, Hideaki Fujita, Hirofumi Akagi, Shin-ichi Kinouchi, (unknown)	1
9	Theoretical Analysis and Control of the Modular Multilevel Cascade Converter Based on Double-Star Chopper-Cells (MMCC-DSCC) 2011 ·IEEJ Transactions on Industry Applications ·Makoto Hagiwara, Ryo Maeda, Hirofumi Akagi	12
10	Torque and Suspension Force in a Bearingless Switched Reluctance Motor 2004 ·IEEJ Transactions on Industry Applications ·Masatsugu Takemoto, Akira Chibá, Hirofumi Akagi, Tadashi Fukao	3
11	A Passive EMI Filter with Access to the Ungrounded Motor Neutral Line-The Case that a General-Purpose Inverter is Directly Connected to a Three-Phase Grounded Voltage Source- 2004 ·IEEJ Transactions on Industry Applications ·Takafumi Doumoto, Hirofumi Akagi	1
12	A Proposal of a Load/Source Simulator Based on the UPFC (Unified Power Flow Controller) and Operating Performance of a 200-V, 1O-kW Laboratory System 2003 ·IEEJ Transactions on Industry Applications ·(unknown), Hirofumi Akagi	2
13	System Configurations and Operating Performance of a Dynamic Voltage Restorer 2003 ·IEEJ Transactions on Industry Applications ·(unknown), Hirofumi Akagi	16
14	Voltage Regulation Performance of a Shunt Active Filter Intended for Installation on a Power Distribution System 2003 ·IEEJ Transactions on Industry Applications ·Hiroshi Yamashita, P. Jintakosonwit, Hideaki Fujita, Hirofumi Akagi, (unknown), (unknown)	117
15	DC Magnetic Deviation, and its Suppression, of a Matching Transformer in a Series Active Filter 2002 ·IEEJ Transactions on Industry Applications ·Hiroshi Hasegawa, Sunt Srianthumrong, Hirofumi Akagi, Hideaki Fujita	5
16	Considerations of a Fully-Digital-Controlled Active Filter for Installation on Power Distribution Systems 2001 ·IEEJ Transactions on Industry Applications ·P. Jintakosonwit, Hideaki Fujita, Hirofumi Akagi	6
17	A Simulation Method for High-Speed and High-Accuracy Calculation 2001 ·IEEJ Transactions on Industry Applications ·(unknown), Satoshi Ogasawara, Hirofumi Akagi	1
18	The Theory of Instantaneous Power in Three-Phase Four-Wire Systems and its Applications 1999 ·IEEJ Transactions on Industry Applications ·Hirofumi Akagi, Satoshi Ogasawara, Hyosung Kim	5
19	Modeling and Analysis of High-Frequency Leakage Currents Caused by Voltage-Source PWM Inverters. 1995 ·IEEJ Transactions on Industry Applications ·Satoshi Ogasawara, Hideaki Fujita, Hirofumi Akagi	39
20	On the current balance of phase-controlled thyristor converter having interphase reactors. 1990 ·IEEJ Transactions on Industry Applications ·Toshihiko Tanaka, Satoshi Ogasawara, Hirofumi Akagi, Akira Nabae	1

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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