Location History:
- Hitachinaka, JP (2002 - 2010)
- Mito, JP (2014)
Company Filing History:
10 out of 42,485 
2 out of 493 Years Active: 2002-2014
Title: Kouki Yamamoto: Innovator in Motor Control Technology
Introduction
Kouki Yamamoto is a prominent inventor based in Hitachinaka, Japan, known for his significant contributions to motor control technology. With a total of 12 patents to his name, he has made remarkable advancements in the field of alternating current motors and electric vehicles.
Latest Patents
Yamamoto's latest patents include a drive device for alternating current motors and an induction motor controller. The drive device enables vector control on sensorless driving of alternating current motors at extremely low speeds without the need for intentionally applied harmonic voltage. This innovation maintains an ideal PWM waveform while accurately estimating the magnetic flux position within the motor. The induction motor controller he developed features a circuit that generates a d-axis current reference signal and controls the d-axis motor current to match this reference. It also includes parameter determining means to calculate motor parameters based on current deviations, enhancing the control of voltage applied to the induction motor.
Career Highlights
Throughout his career, Kouki Yamamoto has worked with notable companies such as Hitachi, Ltd. and Hitachi Industrial Equipment Systems Co., Ltd. His experience in these organizations has allowed him to refine his expertise in motor technology and contribute to various innovative projects.
Collaborations
Yamamoto has collaborated with esteemed colleagues, including Miyoshi Takahashi and Haruo Koharagi. Their combined efforts have led to advancements in motor control systems and have furthered the development of efficient electric vehicles.
Conclusion
Kouki Yamamoto's work in motor control technology has significantly impacted the industry, showcasing his innovative spirit and dedication to advancing electric motor systems. His contributions continue to influence the future of motor technology and electric vehicles.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.