Hideaki Kunisada

Title: Innovations of Inventor Hideaki Kunisada

Introduction

Hideaki Kunisada is a notable inventor based in Hitachi, Japan. He has made significant contributions to the field of electric power conversion, holding a total of 4 patents. His work focuses on enhancing the efficiency and safety of electric power systems.

Latest Patents

Among his latest patents is an innovative electric power converter. This device features an AC input and AC output, incorporating a power rectifier and a power inverter with a DC three-wire circuit. It includes means for detecting current or voltage, which is connected between the AC power source and ground. When a current or voltage is detected, an alarm is triggered or the apparatus is halted. This functionality allows for the assessment of whether the power inverter can produce an excessively large potential. Another significant patent is for an electric power conversion apparatus. This sine wave input converter is equipped with a phase sequence computation unit that inputs two line voltages or two phase voltages from a three-phase AC power supply. It computes the phase of a sine wave voltage from one of these inputs and determines the phase sequence based on the computation results.

Career Highlights

Throughout his career, Hideaki Kunisada has worked with prominent companies such as Hitachi, Ltd. and Hitachi Engineering Co., Ltd. His experience in these organizations has contributed to his expertise in electric power technologies.

Collaborations

He has collaborated with notable coworkers, including Keizo Shimada and Hideyasu Umetsu. Their joint efforts have further advanced the innovations in electric power systems.

Conclusion

Hideaki Kunisada's contributions to electric power conversion technology are significant and impactful. His patents reflect a commitment to improving the safety and efficiency of power systems. His work continues to influence the field of electrical engineering.