Yongchun Yang

Title: Innovations of Yongchun Yang in Power Systems

Introduction

Yongchun Yang is a notable inventor based in Zhejiang, China, recognized for his contributions to power system technologies. He has been instrumental in developing innovative solutions that enhance the efficiency and performance of electrical systems. With a total of three patents to his name, Yang's work focuses on improving inverter technologies.

Latest Patents

Yongchun Yang's latest patents include a three-phase inverter and a control method for the same. This invention features resonant capacitors positioned between the midpoints of three bridge arms and the positive and negative poles of a DC bus. This configuration creates resonant units with output inductors, establishing a resonant network that facilitates soft switching without the need for additional switching transistors. Compared to conventional soft-switching technologies, this innovation reduces circuit device requirements, simplifies the control process, and minimizes system overheads. By enabling the three-phase inverter to operate in continuous mode, it effectively reduces switching and conduction losses, thereby improving conversion efficiency and reducing electromagnetic noise.

Another significant patent is the control method and system for a three-phase grid-connected inverter. This invention includes a three-phase three-leg grid-connected inverter, which connects a filter capacitor to the negative electrode of a DC input bus. This setup forms a filter loop that effectively filters harmonic waves, ensuring high-quality grid-connected current at low power levels without increasing inductance values. The inverter operates in a discontinuous conduction mode, which further reduces switching losses, making it suitable for photovoltaic microinverters.

Career Highlights

Yongchun Yang is currently employed at Altenergy Power System, Inc., where he continues to innovate in the field of power systems. His work has significantly impacted the efficiency and reliability of grid-connected systems, making them more accessible for renewable energy applications.

Collaborations

Yang collaborates with talented individuals such as Biaojie Qi and Yuhao Luo, contributing to a dynamic team focused on advancing power system technologies.

Conclusion

Yongchun Yang's innovative patents and contributions to power systems demonstrate his commitment to enhancing electrical efficiency and performance. His work not only addresses current technological challenges but also paves the way for future advancements in renewable energy applications.