Stefan Almer

Title: The Innovations of Stefan Almer

Introduction

Stefan Almer is a notable inventor based in Zurich, Switzerland. He has made significant contributions to the field of electrical engineering, particularly in the development of advanced control systems for power grids. With a total of five patents to his name, Almer's work focuses on enhancing the efficiency and reliability of energy systems.

Latest Patents

One of Almer's latest patents is titled "Grid Forming Vector Current Control." This innovative system is designed to emulate a virtual synchronous machine (VSM) and includes a droop control unit, a current control unit, a virtual admittance unit, and a phase-locked loop (PLL) unit. The virtual admittance unit and the PLL unit work together to simulate the inertia of the VSM, while a virtual current source is connected in parallel to the VSM.

Another significant patent is "Multi-Port Grid Forming Control for Grid Interties." This system is utilized for controlling grid interties, with a first terminal connected to one power grid and a second terminal to another. Each terminal comprises a current control unit, a virtual admittance unit, and a PLL unit, all configured to emulate the inertia of a VSM. The controller in this system uses transient power consumed by the first VSM to generate a power-equivalent current reference for the second virtual current source, and vice versa.

Career Highlights

Stefan Almer has worked with prominent companies in the energy sector, including ABB Schweiz AG and Hitachi Energy Switzerland AG. His experience in these organizations has allowed him to develop and refine his innovative ideas in power control systems.

Collaborations

Throughout his career, Almer has collaborated with talented professionals such as Mario Schweizer and Lennart Harnefors. These partnerships have contributed to the advancement of his projects and the successful implementation of his inventions.

Conclusion

Stefan Almer's contributions to the field of electrical engineering through his patents and collaborations highlight his innovative spirit and dedication to improving energy systems. His work continues to influence the development of advanced control technologies in the power industry.