Ju Young Chang

Title: Ju Young Chang: Innovator in Grid-Connected Inverter Technology

Introduction

Ju Young Chang is a notable inventor based in Pohang-si, South Korea. He has made significant contributions to the field of grid-connected inverter technology, holding a total of 3 patents. His work focuses on enhancing the reliability and efficiency of energy systems.

Latest Patents

Chang's latest patents include innovative solutions for protecting grid-connected inverters from low grid voltage and controlling overcurrent due to abnormal grid voltage. The first patent describes an apparatus and method for protecting a grid-connected inverter from low grid voltage. This invention features a first output current sensor, a first output current calculator, and a first output current controller that work together to ensure the inverter operates safely under varying conditions. The second patent addresses the issue of overcurrent in grid-connected inverters caused by abnormal grid voltage. It includes a grid voltage sensor, a voltage variation calculator, and an output current controller that effectively manage the inverter's output current in response to grid voltage fluctuations.

Career Highlights

Throughout his career, Ju Young Chang has worked with prominent companies such as Posco Energy Co., Ltd. and Posco Energy, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in the energy sector.

Collaborations

Chang has collaborated with several professionals in his field, including Jeong Heum Lee and Sang Ho Moon. These partnerships have contributed to the advancement of his projects and the successful implementation of his inventions.

Conclusion

Ju Young Chang is a distinguished inventor whose work in grid-connected inverter technology has the potential to significantly impact energy systems. His patents reflect a commitment to innovation and safety in the energy sector.