Qihua Z Zhao

Title: Qihua Z Zhao: Innovator in DC Voltage Power Supply Technologies

Introduction

Qihua Z Zhao is a notable inventor based in Mississauga, Canada. He has made significant contributions to the field of electrical engineering, particularly in the area of DC voltage power supply technologies. With a total of 4 patents to his name, Zhao continues to push the boundaries of innovation.

Latest Patents

Zhao's latest patents include an "Advanced inrush/transient current limit and overload/short circuit protection method and apparatus for DC voltage power supply." This invention provides a single circuit that may have multiple protection functions for a DC voltage power supply. It includes separate circuit modules that can be employed individually or in various combinations. These modules consist of a temperature and input voltage variation compensated current limit circuit, an inrush and transient current limit combined with an overload and short circuit protection circuit, and a self-adaptive short circuit turn-off timing circuit.

Another significant patent is the "Multi-stage dynamic braking resistor network." This invention features a plurality of dynamic brake resistors designed to dissipate regenerative energy as heat, which is inputted onto a system bus by a motor or actuator. The network includes multiple switches for connecting the dynamic brake resistors to and from the system bus, along with a control circuit that manages the switches based on predetermined voltage thresholds and rotation patterns.

Career Highlights

Qihua Z Zhao is currently employed at Honeywell International Inc., where he applies his expertise in electrical engineering to develop innovative solutions. His work has been instrumental in enhancing the safety and efficiency of power supply systems.

Collaborations

Zhao collaborates with talented individuals such as Louis Cheng and Yang Ye, who contribute to his projects and innovations. Their teamwork fosters a creative environment that leads to groundbreaking advancements in technology.

Conclusion

Qihua Z Zhao is a distinguished inventor whose work in DC voltage power supply technologies has made a lasting impact. His innovative patents and collaborations highlight his commitment to advancing electrical engineering.