Company Filing History:
Years Active: 1995-1997
Title: Innovations by Inventor Li Chen
Introduction
Li Chen is a notable inventor based in Milwaukee, WI (US). She has made significant contributions to the field of motor control technology. With a total of 3 patents, her work focuses on improving the efficiency and functionality of induction motors.
Latest Patents
One of her latest patents is titled "Method and apparatus for RMS current measurement in induction motors." This invention provides a method and apparatus to be used with a motor controller for determining RMS line current during a start-up period or a stalled period using electrical values known to the controller. Various equations relate RMS line current to monitored thyristor and source voltages, as well as the duration of non-conducting periods in line voltages to determine the RMS line current. Another significant patent is the "Method and apparatus for current rebalance in induction motor." This invention is designed to determine if phase currents in a three-phase AC motor are balanced. The phase angles between current zero crossing times for consecutive phase currents are compared to assess current balance, and thyristor switches are employed to adjust phase angles and rebalance unbalanced currents.
Career Highlights
Li Chen is currently employed at Allen-Bradley Company, LLC, where she continues to innovate in the field of motor control. Her work has been instrumental in advancing technologies that enhance the performance of induction motors.
Collaborations
Li collaborates with her coworker, Peter J. Unsworth, to further develop and refine her inventions. Their teamwork has led to significant advancements in their projects.
Conclusion
Li Chen's contributions to motor control technology through her innovative patents demonstrate her expertise and commitment to improving industrial applications. Her work continues to influence the field positively.