Francisco Daniel Freijedo Fernández

Title: Francisco Daniel Freijedo Fernández: Innovator in Power Electronics

Introduction

Francisco Daniel Freijedo Fernández is a notable inventor based in Nuremberg, Germany. He has made significant contributions to the field of power electronics, holding a total of 4 patents. His work focuses on advanced control systems and power sharing regulation, which are essential for modern power converters.

Latest Patents

One of his latest patents is a "Controller for controlling a balancer circuit." This innovative controller is designed to manage a balancer circuit by determining the difference between two DC link voltage values in a power converter. It calculates the phase-angle and magnitude of this difference for an integer harmonic of a predetermined grid frequency. The controller also provides a switching signal to alternate between the two DC links based on these calculations. Additionally, it regulates the mid-point current at a terminal of the power converter, ensuring optimal performance.

Another significant patent is for "Power sharing regulation for solid state transformer by embedded digital equalization." This invention involves a multilevel converter with multiple phase legs, each containing several cells. Each cell includes an AC/DC converter, closed-loop control, and a DC/DC converter. The closed-loop control is responsible for regulating the power transmitted to the DC link based on a cell power reference, which is adjusted according to deviations from the average power per cell.

Career Highlights

Francisco has worked with prominent companies in the technology sector, including Huawei Technologies Co., Limited and Huawei Digital Power Technologies Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in power electronics.

Collaborations

Throughout his career, Francisco has collaborated with talented individuals such as Piniwan Thiwanka Bandara Wijekoon and Mauro Valente. These collaborations have contributed to the advancement of his projects and innovations.

Conclusion

Francisco Daniel Freijedo Fernández is a distinguished inventor whose work in power electronics has led to several impactful patents. His contributions continue to shape the future of power conversion technology.