Syunichi Hirose

Title: Syunichi Hirose: Innovator in Inverter Control Technology

Introduction

Syunichi Hirose is a prominent inventor based in Tokyo, Japan, known for his significant contributions to inverter control technology. With a total of eight patents to his name, Hirose has made remarkable advancements in the field of electrical engineering, particularly in the development of control devices for system interconnection inverters.

Latest Patents

Hirose's latest patents include a control device for a system interconnection inverter. This innovative control device features an active/reactive current reference generator and an active/reactive current detector that monitors the output AC current of the inverter. Additionally, it incorporates a phase detector, frequency detector, and voltage amplitude detector to ensure optimal performance. The device also includes a frequency reference generator and a voltage amplitude reference generator, along with correction computing circuits for both frequency and voltage amplitude. Furthermore, it utilizes an adder to produce active and reactive current correction signals, ultimately generating an output voltage reference signal for the inverter through a current control circuit.

Another notable patent is an inverter control device designed to suppress DC magnetization in a three-phase transformer connected to an AC power system. This device includes a current DC component detecting circuit and a DC magnetization suppressor signal generating circuit, which work together to balance the voltage DC components in the three-phase output AC voltage of the inverter. The gate control circuit then regulates the three-phase output AC voltages based on the corrected output references.

Career Highlights

Throughout his career, Syunichi Hirose has worked with esteemed companies such as Toshiba Corporation and The Tokyo Electric Power Company, Incorporated. His experience in these organizations has greatly influenced his innovative work in inverter technology.

Collaborations

Hirose has collaborated with notable colleagues, including Haruhisa Inokuchi and Osamu Higa, contributing to the advancement of inverter control systems.

Conclusion

Syunichi Hirose's contributions to inverter control technology have established him as a key figure in the field. His innovative patents and collaborations reflect his dedication to enhancing electrical engineering solutions.