Jinghan He

Title: Innovations in Electrical Engineering: The Contributions of Jinghan He

Introduction

Jinghan He, an accomplished inventor based in Beijing, China, has made significant contributions to the field of electrical engineering. With a total of three patents to his name, He has demonstrated a remarkable ability to innovate in areas related to DC transmission networks and modular multilevel converters.

Latest Patents

One of Jinghan He's latest patents is entitled "Method for Protecting DC Line Impedance Phase Based on Protection and Control Coordination." This method employs high controllability of a converter after a fault occurrence by injecting a characteristic signal at a specific frequency. It effectively calculates the phase angle of input impedance to identify a fault interval, thereby enhancing protection performance and proactively addressing faults without being hindered by the nonlinearity of the converter. This method notably allows for reliable fault identification using a half-bridge Modular Multilevel Converter (MMC), which does not require additional equipment or fault ride-through identification, resulting in improved fault identification speed and economic benefits.

Another significant patent is the "Steady State Fault Current Calculation Method for Modular Multilevel Converter," which involves a systematic approach to calculate the steady-state fault current of an MMC. This method analyzes various parameters such as bridge arm inductance coefficients and DC-side critical resistance values to determine steady-state DC fault current and conduction overlap angles. The innovative approach also considers AC-side resistance, providing enhanced accuracy in fault current amplitude and phase angle calculations.

Career Highlights

Jinghan He is currently affiliated with Beijing Jiaotong University, where he continues to push the boundaries of research and innovation in electrical engineering. His academic background and ongoing research contribute significantly to the university's reputation as a leading institution in technology and engineering disciplines.

Collaborations

In his innovative journey, Jinghan He works alongside esteemed colleagues, including Meng Li and Yin Xu. These collaborations foster a creative environment that encourages the development of cutting-edge technologies and patentable inventions in their respective fields.

Conclusion

Jinghan He's work exemplifies the ingenuity and forward-thinking approach essential in today’s technological landscape. Through his patents, he not only resolves critical issues in electrical engineering but also sets a benchmark for future innovations in DC transmission and modular multilevel converter technology. With a promising career ahead, Jinghan He continues to inspire future inventors and researchers in the field.