Jong-Yun Choi

Title: Innovations of Jong-Yun Choi

Introduction

Jong-Yun Choi is a prominent inventor based in Hwaseong-si, South Korea. He has made significant contributions to the field of electrical engineering, particularly in the development of modular multilevel converters. With a total of 7 patents to his name, Choi's work has had a substantial impact on power control systems.

Latest Patents

One of his latest patents is the Modular Multilevel Converter, which includes multiple sub-modules connected in series. This innovative design features a controller that manages the on/off switching of the sub-modules. The converter is equipped with N sub-modules for operation and M redundant sub-modules to replace any failing N sub-modules. The controller activates a sub-module based on a carrier signal compared to a preset reference signal.

Another notable patent is the Power Control Apparatus for Sub-Module of MMC Converter. This apparatus ensures a stable power supply to sub-modules connected to high-voltage direct current (HVDC) systems and static synchronous compensators (STATCOM). It includes a series of resistors, a switch, a Zener diode, and a DC/DC converter, all working together to control the current flowing through the Zener diode based on the switch's ON/OFF status.

Career Highlights

Jong-Yun Choi has worked with notable companies such as Hyosung Heavy Industries Corporation and Hyosung Corporation. His experience in these organizations has allowed him to refine his expertise in electrical engineering and power systems.

Collaborations

Choi has collaborated with several professionals in his field, including June-Sung Kim and Hong-Ju Jung. These collaborations have contributed to the advancement of his innovative projects and patents.

Conclusion

Jong-Yun Choi's contributions to the field of electrical engineering through his patents and collaborations highlight his role as a leading inventor. His work continues to influence the development of advanced power control systems.