Shozuchi Miura

Title: Innovations of Shozuchi Miura

Introduction

Shozuchi Miura is a notable inventor based in Hitachi, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of control systems for electric locomotives. With a total of three patents to his name, Miura's work has had a substantial impact on the efficiency and performance of electric power systems.

Latest Patents

One of Miura's latest patents is a control system for an electric locomotive that utilizes AC to DC converters. This innovative system features two AC-DC converters connected in cascade, along with a power factor controller linked to one of the converters. The design includes two automatic pulse phase shifters that are controlled by a signal responding to the difference between the current flowing in the converters and a reference signal. Additionally, the system regulates one of the input signals of the automatic pulse phase shifter using a bias signal. The output from each phase shifter is switched when the locomotive's speed exceeds a predetermined reference speed signal.

Another significant patent by Miura is a power factor improving apparatus for power converters. This invention involves a transformer with two secondary windings, each equipped with a controlled rectifying circuit. The DC sides of these circuits are connected in series to supply power to DC motors. One of the secondary windings can be detachably connected to a capacitor bank, which is selected to improve the power factor of the converter when both rectifying circuits produce output voltages. The capacitor bank connects in response to the primary winding's current reaching a predetermined value.

Career Highlights

Miura has dedicated his career to advancing electric locomotive technology. His work at Hitachi, Ltd. has positioned him as a key figure in the development of innovative electrical systems. His patents reflect a deep understanding of electrical engineering principles and a commitment to enhancing the performance of electric locomotives.

Collaborations

Throughout his career, Miura has collaborated with various professionals in the field. One notable coworker is Kyozo Tachibana, with whom he has likely shared insights and expertise in electrical engineering.

Conclusion

Shozuchi Miura's contributions to electric locomotive technology through his innovative patents demonstrate his expertise and commitment to advancing the field. His work continues to influence the efficiency and performance of electric power systems.