Location History:
- Austin, TX (US) (1991 - 1993)
- Round Rock, TX (US) (1994)
Company Filing History:
Years Active: 1991-1994
Title: Innovations of John S Hsu
Introduction
John S Hsu is a notable inventor based in Austin, TX (US). He has made significant contributions to the field of electrical engineering, particularly in the generation of harmonics and the performance of AC machines. With a total of 4 patents to his name, Hsu's work has advanced the understanding and application of power electronics.
Latest Patents
One of Hsu's latest patents focuses on the generation of multi-phase multiple-order harmonics of a fundamental frequency. This invention provides improved techniques and circuit arrangements for generating gating signals for firing switching devices in inverter circuits. The method involves generating line-frequency sine wave signals from a multi-phase fundamental input voltage and producing firing pulses by detecting zero-crossings of these signals. Additionally, a digital technique utilizing logic counters is employed to generate the required gate timing signals.
Another significant patent by Hsu is a method and apparatus for improving the performance of polyphase AC machines. This innovation excites the machines with both a fundamental frequency and an odd harmonic, facilitating the redistribution of flux densities and increasing the total flux per pole in the machine.
Career Highlights
Hsu is affiliated with the University of Texas System, where he continues to contribute to research and development in electrical engineering. His work has not only advanced theoretical knowledge but also practical applications in the industry.
Collaborations
Hsu has collaborated with esteemed colleagues such as Herbert H Woodson and Amr M Amin, further enhancing the impact of his research through teamwork and shared expertise.
Conclusion
John S Hsu's innovative contributions to electrical engineering, particularly in harmonics generation and AC machine performance, highlight his role as a leading inventor in his field. His patents reflect a commitment to advancing technology and improving efficiency in power electronics.