This inventor holds 1 USPTO granted patent and 1 published patent application. Top assignee: Hitachi Energy Ltd. Active years: 2026.
Company Filing History:
Years Active: 2026
Title: Ann Palesjo: Innovator in Energy Storage Systems
Introduction
Ann Palesjo is a notable inventor based in Vasteras, Sweden. She has made significant contributions to the field of energy storage systems. Her innovative approach has led to the development of a patented method that enhances the safety and efficiency of energy storage solutions.
Latest Patents
Ann Palesjo holds a patent for a "Method for detecting a ground fault, a control unit and an energy storage system." This invention discloses a method for detecting a ground fault in an energy storage system comprising at least one string with multiple energy storage modules. The string connects between a first direct current (DC) pole and a second DC pole, which are linked to an AC side through respective converters. The method involves determining a first co-phasal harmonic component based on at least one phase-to-ground voltage measured at the AC side. It also includes determining a second co-phasal harmonic component based on at least one pole-to-ground voltage measured at the DC side. A ground fault is identified if the first co-phasal harmonic component increases and/or the second co-phasal harmonic component decreases. This patent showcases her expertise in enhancing energy storage systems.
Career Highlights
Ann Palesjo is currently employed at Hitachi Energy Ltd. Her work focuses on advancing technologies that improve energy storage and management. With her innovative mindset, she has contributed to the development of safer and more efficient energy systems.
Collaborations
Ann collaborates with talented individuals such as Hongyang Zhang and Saran Teja Malladi. These partnerships enhance her research and development efforts, leading to groundbreaking advancements in energy technology.
Conclusion
Ann Palesjo is a pioneering inventor whose work in energy storage systems is making a significant impact. Her patented method for detecting ground faults exemplifies her commitment to innovation and safety in energy management.