Student written Research Laboratory Guidebook 2023Nagaoka University of Technology

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Power Engineering Laboratory

Professor / MIURA Yushi

ProfessorMIURA Yushi

profiles and activiities profiles and activiities at nagaoka university of technology
  • Large, sophisticated, and stable power systems
  • Approach energy problems with power electronics
  • Progress. Not perfection.


Professor / MIURA Yushi
Prof.Miura is an expert in power engineering, especially semiconductor converters in power systems. By working with him, we learn not only professional knowledge but also broad perspective. He is very friendly and considerate, and we get great advice from him. He is also an Aikido Sensei and from him we can learn a positive and relaxed state of mind and body.

Research Content

Electric power systems are at a major turning point. The increase in renewable energy sources such as solar or wind power makes it necessary to compensate those power fluctuations with energy storage devices. Alternatively, DC power systems or ICT-based smart grids are also anticipated.
The key to these new systems is power electronics technology.
With the emergence of new devices such as silicon carbide (SiC) and gallium nitride (GaN), the application of semiconductor power converters in power systems is expected to expand. However, power systems with many of them have specific problems such as frequency fluctuations. Our research is aimed at solving these problems.

Experimental system with real-time simulation device

A Day in the Lab

Our motto is "the integral of the time you spend in the lab is proportional to your ability," but basically, you are free to manage your time as you wish. By sharing time and space with your colleague, you can acquire "the skills to ask others for advice and help," which is necessary in social life.
Research begins with the sharing of ideas. Next, circuits and control systems are designed and examined through computer simulations. Then, experiments are conducted in small experimental facilities, and the results are discussed.
Although the research is sometimes rigorous, we also have fun in our laboratory, just like in a club activity.

The experiment of AC series power supply system with semiconductor power converters

Thesis Subjects

  • (M)Overcurrent Suppression Method by Power Feedback Angular Frequency Control for Energy Storage System with Virtual Synchronous Generator Control
  • (M)Virtual Synchronous Machine Control of SST Using Power Disturbance Detection Method Based on Swing Equation
  • (M)Heat Output Control of Induction Generators Used as Heat Generators in Thermal Storage System

The number of
PhD Graduates


Major employers of Graduates

  • Daikin Industries
  • The Kansai Electric Power Company
  • Toshiba Plant Systems & Services
  • Nexco-Engineering Niigata
  • Tokyo Power Technology
Writer : NOGI Shogo, Electrical, Electronics and Information Engineering
(National Institute of Technology, Numazu College)