Hualong Yu

Title: Hualong Yu: Innovator in VSC-HVDC Technology

Introduction

Hualong Yu is a prominent inventor based in Beijing, China. He has made significant contributions to the field of high-voltage direct current transmission systems. His innovative approach focuses on enhancing the efficiency and reliability of Voltage Source Converter-High Voltage Direct Current (VSC-HVDC) systems.

Latest Patents

Hualong Yu holds a patent for a "Suppression method of high-frequency resonance for VSC-HVDC system based on nonlinear filter in voltage feed-forward control." This invention addresses the challenge of high-frequency resonance in VSC-HVDC systems by utilizing a nonlinear filter in the voltage feed-forward control. The method involves extracting each sequence component of the AC voltage, calculating the average value at multiple sample points, and comparing it with previous outputs from the nonlinear filter. This process results in a fixed value that varies according to gradient, effectively suppressing high-frequency resonance without compromising system responsiveness. The invention is particularly advantageous as it can be implemented in existing secondary control software without the need for additional equipment, making it a cost-effective solution for engineering practices.

Career Highlights

Hualong Yu's career is marked by his dedication to advancing VSC-HVDC technology. His innovative methods have the potential to significantly reduce the risk of over-current in converter valves during voltage disturbances. His work is recognized for its practicality and low-cost implementation, which is crucial for widespread adoption in the industry.

Collaborations

Hualong Yu has collaborated with notable colleagues, including Yu Wang and Fengmei Cao. Their combined expertise contributes to the ongoing development and refinement of innovative solutions in the field of electrical engineering.

Conclusion

Hualong Yu's contributions to VSC-HVDC technology exemplify the impact of innovative thinking in addressing complex engineering challenges. His patent not only enhances system performance but also offers a practical solution for real-world applications.