Introduction (English)

The Power Electronic Systems (PELS) Laboratory has a comprehensive research policy on the broad topic of power electronics and power systems. In particular, we are aiming for applications in the areas of sustainable, renewable energy-derived distributed power sources, high-precision data analysis, and earth-friendly mobility for future zero-emissions.

【Faculty】

Yuko Hirase, Ph. D.
Professor
Program of Electrical and Electronic Engineering, School of Engineering

Technical Committee Member of Electricity and Gas Market Surveillance Commission, Ministry of Economy, Trade and Industry
【Career Summary】
Ph.D. in Engineering, March 2016, Osaka University, Suita, Osaka, Japan
M.A in Engineering, March 1996, Osaka Prefecture University, Sakai, Osaka, Japan
B.A in Science, March 1995, National Institution for Academic Degrees, Tokyo, Japan
Before the current position, she worked for Mitsubishi Electric Corporation, Hitachi Maxell, Ltd. and Kawasaki Technology Co., Ltd

From 2019 to 2025, she was an associate professor at Toyo University.

From 2025, she is currently a professor at Kwansei Gakuin University.
【Academic Affiliations】
IEEJ (The Institute of Electrical Engineers of Japan)
JIPE (The Japan Institute of Power Electronics)
IEEE
CIGRE

【Research Thrusts】

1. A Study on Advanced Control Methods of the Virtual Synchronous Generator (VSG)
Virtual Synchronous Generator (VSG) control is a type of grid-forming inverter control that contributes to maintaining a robust power system in the event of a disaster or accident. In this laboratory, we are working not only to extract and improve the characteristics of the existing VSG control, but also to develop a new control method that can replace it.

2. A study of circuit topology and control methods for high-power, high-efficiency power converters that can be connected to single-phase grids
To use power efficiently regardless of the type of load, single-phase AC systems connected to homes and electric railroads require circuits that differ from three-phase AC. In this laboratory, we study circuit topologies and control methods to achieve high power output and high efficiency in power conversion devices that can be connected to both single-phase two- and three-wires systems.

3. A Research on a new data-driven power system analysis method for on-line measurement and control
The electricity generated and consumed by power electronics equipment contains many nonlinear elements, and analysis using only conventional linear modeling methods are not enough. Therefore, this laboratory aims to achieve highly accurate power system analysis using various data-driven methods such as impedance-based analysis, Koopman mode analysis, and Hilbert fan transformation.

4. A Study on High Voltage Direct Current (HVDC) Transmission System with Doubly Fed Induction Generator (DFIG)
Doubly fed induction generators (DFIG) are commonly used in wind turbines. High-voltage direct current (HVDC) power transmission systems with low power loss are attracting attention in offshore wind power generation. This laboratory will utilize DFIG's experimental equipment to study the construction of power systems for zero emissions.

5. A Research on safe, secure, and highly efficient energy management systems (EMS)
A safe, secure, and highly efficient energy management system (EMS) will be constructed using the power distribution system of the Kawagoe Campus, combining various distributed power sources such as solar power, wind power, and storage batteries with advanced power conversion equipment.

6. Other (Flying Capacitor Control，Solar Power Generation Control，etc.)

Place of Employment

Tokyo Electric Power Company Holdings, Incorporated
SHIMIZU CORPORATION
Electric Power Development Co.,Ltd. (J-POWER)
Toshiba Mitsubishi-Electric Industrial Systems Corporation (TMEIC）
DAIICHI TECHNO CO.,LTD.
etc.

Awards

Publications

Contacts