This inventor holds 4 USPTO granted patents and 1 published patent application. Top assignee: Caterpillar Inc.. Active years: 2013-2015.
Company Filing History:
Years Active: 2013-2015
Title: Lewei Qian: Innovator in Ground Fault Protection and Temperature Regulation
Introduction
Lewei Qian is a notable inventor based in Peoria, IL (US), recognized for his contributions to electrical engineering. He holds a total of 4 patents that focus on enhancing the safety and efficiency of power systems. His innovative work has made significant strides in the field of ground fault protection and temperature regulation for electronic components.
Latest Patents
One of Lewei Qian's latest patents is for a ground fault protection system and methods. This system includes a controller designed to receive signals representing ground fault detection voltage and DC link voltage. The controller determines a ground fault detection percentage value and a worst-case component insulation voltage. It compares the absolute value of this insulation voltage with the rated insulation voltage of the machine's components. If the insulation voltage exceeds the rated voltage, the controller adjusts the DC link voltage accordingly to ensure safe operation.
Another significant patent involves a method for regulating the temperature of a transistor-based component within a power system. This method operates the power system to supply electric power to the component while managing heat generation. By controlling various operations during specific system conditions, the method ensures that the temperature of the transistor-based component remains optimal for performance.
Career Highlights
Lewei Qian is currently employed at Caterpillar Inc., a leading company in the manufacturing of construction and mining equipment. His role at Caterpillar allows him to apply his innovative ideas in practical applications, contributing to the company's reputation for quality and safety in engineering.
Collaborations
Lewei has collaborated with notable coworkers, including Donald John Gilmore and David Marchand. Their combined expertise fosters a creative environment that encourages innovation and the development of advanced technologies.
Conclusion
Lewei Qian's work exemplifies the spirit of innovation in electrical engineering. His patents not only enhance safety in power systems but also improve the efficiency of electronic components. Through his contributions at Caterpillar Inc., he continues to make a lasting impact in the field.