Company Filing History:
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1 out of 832,843 Years Active: 2001-2009
Title: The Innovations of Toshihiko Shikata
Introduction
Toshihiko Shikata is a notable inventor based in Kyoto, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of inverter technology and harmonic measurement methods. With a total of 2 patents, his work has had a considerable impact on power systems.
Latest Patents
One of his latest patents is an "Inverter apparatus comprising switching elements." This invention addresses the problem of eliminating variation in potential during the turn-off time period of each Gate Turn-Off (GTO) element. It stabilizes the gate drawing current by ensuring the reliable turn-off of the GTO element. The inverter apparatus features a three-phase inverter that includes paired GTO elements, with a control portion designed to prevent simultaneous switching. This function delays the turn-on operation of GTO elements corresponding to phases other than the one being activated, thereby enhancing performance.
Another significant patent is the "Harmonic component measuring method for power system." This method involves determining frequencies between the measurement harmonic and adjacent harmonics. It allows for the injection of inter-harmonic currents into a power system, facilitating the measurement of voltage and currents at the inject point. The results enable the calculation of admittances for inter-harmonics, which are crucial for understanding power system behavior.
Career Highlights
Throughout his career, Toshihiko Shikata has worked with prominent companies, including Kansai Electric Power Co., Inc. His expertise in electrical engineering has led to advancements in inverter technology and power system analysis.
Collaborations
Shikata has collaborated with notable colleagues such as Isao Koda and Masakazu Tsukamoto. Their combined efforts have contributed to the development of innovative solutions in the field.
Conclusion
Toshihiko Shikata's contributions to inverter technology and harmonic measurement methods highlight his importance as an inventor. His patents reflect a commitment to improving electrical systems and enhancing their efficiency.