Koji Toba

Title: Koji Toba: Innovator in Power Conversion Technologies

Introduction

Koji Toba is a prominent inventor based in Tama, Japan. He has made significant contributions to the field of power conversion, holding a total of 7 patents. His work focuses on enhancing the efficiency and stability of power systems, particularly in microgrid applications.

Latest Patents

One of Toba's latest patents is a power conversion device designed to reduce cross current. This innovative power converter includes a phase controller that calculates a phase angle reference value based on the difference between a commanded active power reference value and the output active power supplied to a distribution line. Additionally, it features a voltage controller that computes voltage reference values, which are then used by a power conversion unit to convert electric power from a power supply source into AC power for distribution.

Another notable patent is a microgrid startup method and program. This method enables a stable startup of microgrids without causing frequency fluctuations. It involves a master-slave configuration of inverter power supplies, where the master starts up first in a Constant Voltage Constant Frequency (CVCF) mode, followed by the slave in a grid interconnection mode. The method includes control mode changes based on output fluctuations, ensuring a smooth operation of the microgrid.

Career Highlights

Throughout his career, Koji Toba has worked with notable companies such as Toshiba Corporation and Toshiba Energy Systems & Solutions Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in power conversion technologies.

Collaborations

Toba has collaborated with esteemed colleagues, including Takenori Kobayashi and Yoshihiro Ogita. Their combined expertise has contributed to advancements in the field of power systems.

Conclusion

Koji Toba's contributions to power conversion technologies have made a significant impact on the industry. His innovative patents and collaborative efforts continue to shape the future of microgrid systems and power efficiency.