Company Filing History:
Years Active: 1998-1999
Title: Hiroshi Tetsutani: Innovator in AC Motor Control Technologies
Introduction
Hiroshi Tetsutani is a notable inventor based in Hyogo, Japan. He has made significant contributions to the field of electrical engineering, particularly in the area of AC motor control. With a total of 4 patents to his name, Tetsutani's work has advanced the efficiency and functionality of AC motors.
Latest Patents
Tetsutani's latest patents include a "Variable-speed control method and apparatus for AC motor." This innovative apparatus computes the leakage inductance of an AC motor, compensates for it accurately, and controls the variable speed of the motor. The system features an AC signal generation circuit that generates an AC signal, allowing for precise calculations of leakage inductance based on actual current measurements. This technology effectively compensates for voltage drops caused by leakage inductance, enhancing the performance of AC motors.
Another significant patent is the "Variable speed controller for an AC motor." This invention provides a trans-vector controller that allows for the operation of the secondary resistance of an AC motor without the need for experimental rotation. The variable speed control circuit includes a secondary resistance value generating device that modifies the direct current exciting current, facilitating the operation of induction motors with improved efficiency.
Career Highlights
Hiroshi Tetsutani is currently employed at Fuji Electric Co., Ltd., where he continues to innovate in the field of electrical engineering. His work has been instrumental in developing advanced technologies that improve the performance of AC motors.
Collaborations
Tetsutani has collaborated with notable colleagues such as Hirokazu Tajima and Hidetoshi Umida. Their combined expertise has contributed to the successful development of various technologies in the field.
Conclusion
Hiroshi Tetsutani's contributions to AC motor control technologies have made a significant impact on the industry. His innovative patents reflect his dedication to enhancing the efficiency and functionality of electrical systems.