Location History:
- Jiangsu, CN (2019 - 2024)
- Zhenjiang, CN (2022 - 2024)
Company Filing History:
Years Active: 2019-2025
Title: Innovations of Jinghua Ji in Electromagnetic Motor Technology
Introduction
Jinghua Ji is a prominent inventor based in Jiangsu, China, known for his significant contributions to the field of electromagnetic motor technology. With a total of 10 patents to his name, Ji has focused on developing methods that enhance the performance and efficiency of permanent magnet motors.
Latest Patents
One of his latest patents is titled "Method for reducing electromagnetic vibration of permanent magnet motor with fractional slot concentrated winding." This innovative method aims to reduce electromagnetic vibrations in fractional slot concentrated winding (FSCW) permanent magnet motors. The approach utilizes the Nyquist Shannon sampling theorem to analyze the modulation effects of electromagnetic forces in the air gap. By establishing an equivalent analytical model of PM flux density, Ji identifies the phase relationships between different flux density harmonics. This research leads to the design of a new magnet structure that effectively reduces electromagnetic force and vibration.
Another notable patent is the "Model predictive decomposition control method and device for open-winding five-phase permanent magnet synchronous motor." This method involves obtaining voltage components in a stationary coordinate system aligned with the rotor magnetic field. Ji synthesizes a virtual voltage vector to eliminate harmonic voltage vectors, ensuring the normal operation of the open winding system through innovative inverter management.
Career Highlights
Jinghua Ji is affiliated with Jiangsu University, where he continues to advance research in motor technology. His work has garnered attention for its practical applications in reducing vibrations and improving the efficiency of electric motors.
Collaborations
Ji collaborates with notable colleagues, including Wenxiang Zhao and Guohai Liu, who contribute to his research endeavors. Their combined expertise enhances the development of innovative solutions in the field of electromagnetic motors.
Conclusion
Jinghua Ji's contributions to electromagnetic motor technology through his patents reflect his commitment to innovation and excellence. His work not only addresses critical challenges in motor design but also paves the way for future advancements in the industry.