Akira Nabae is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of inverter technology, holding a total of 3 patents. His work focuses on enhancing the efficiency and functionality of inverter apparatuses, which are crucial in various electronic applications.

Latest Patents

Nabae's latest patents include innovative designs for inverter apparatuses. One of his patents describes an inverter that comprises a plurality of branch circuits connected across a DC source. Each branch circuit includes a pair of main controlled semiconductor switching elements, a diode, and a smoothing reactor. A commutating circuit, which includes a commutating capacitor, a commutating reactor, and an auxiliary reverse conduction type controlled semiconductor switching element, is connected in parallel with each main controlled semiconductor switching element. Additionally, a pair of circulating diodes are provided for each branch circuit, connecting the respective commutating capacitors to the positive and negative sides of the DC source.

Another patent details an inverter apparatus that includes multiple parallel branch circuits connected across a DC source. Each branch circuit features a pair of serially connected controllable switching elements and a variety of semiconductor elements connected in parallel opposition with the respective switching elements. A DC reactor is connected on either the DC side or AC side of the inverter, along with a circuit designed to prevent attenuation of the current flowing through the DC reactor during the OFF period of the switching elements. This design includes a source of control pulses that renders ON the controllable switching elements for a 120-degree interval of the output alternating current.

Career Highlights

Akira Nabae is currently employed at Tokyo Shibaura Denki Kabushiki Kaisha, a company known for its advancements in electrical engineering and technology. His work at the company has allowed him to develop and refine his innovative ideas in inverter technology.

Collaborations

Nabae has collaborated with notable coworkers, including Takeo Shimamura and Ichirou Shimizu. These collaborations have contributed to the development of cutting-edge technologies in their field.

Conclusion

Akira Nabae's contributions to inverter technology through his patents and work at Tokyo Shibaura Denki Kabushiki Kaisha highlight his role as an influential inventor. His innovative designs continue to impact the efficiency

Profile summary based on public USPTO records.

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