This inventor holds 3 USPTO granted patents and 1 published patent application. Top assignees: Shandong Jianzhu University, Shandong University. Active years: 2022-2025.
Company Filing History:
Years Active: 2022-2025
Title: **Innovative Contributions of Changwei Qin in Inverter Technology**
Introduction
Changwei Qin is a notable inventor based in Jinan, China, recognized for his significant advances in inverter technology. With a total of three patents to his name, Qin's work focuses on methods of suppressing common-mode voltage and current harmonics, which are critical for improving the efficiency and performance of electrical systems.
Latest Patents
Qin's most recent patents contribute innovative techniques to enhance the operation of inverters. The first patent, titled "Method and system for cooperatively suppressing common-mode voltage and current harmonics of coupled three-level inverter," lays out a detailed approach for managing common-mode voltages through strategic voltage vector selection and duty cycle adjustments. This patent outlines steps to analyze voltage sectors, synthesize reference voltage vectors, and optimize switching sequences for coupled inverters.
Another significant patent is the "Common-mode voltage suppression method and system for quasi-Z-source simplified three-level inverter." This invention details a methodology for selecting appropriate voltage vectors and designing a neutral-point voltage balance controller to efficiently manage the voltage balance in quasi-Z-source inverters. Both patents reflect Qin's commitment to advancing inverter technology and addressing issues related to voltage harmonics.
Career Highlights
Changwei Qin has held influential positions at renowned institutions such as Shandong Jianzhu University and Shandong University. His academic and research contributions have helped propel advancements in electrical engineering, particularly in the design and performance optimization of inverters.
Collaborations
Throughout his career, Qin has collaborated with distinguished coworkers including Xiaoyan Li and Zhiyuan Chu. These collaborations have not only fostered innovation through shared expertise but have also contributed to the successful development and application of his patented technologies.
Conclusion
In summary, Changwei Qin's inventive contributions to the field of inverter technology have made a meaningful impact on electrical engineering. His patents serve as valuable resources for future advancements in managing inverter operations and improving efficiency, positioning him as a significant figure in the landscape of innovation in this domain.