Annika Lokrantz

Title: Annika Lokrantz: Innovator in RC-IGBT Technology

Introduction

Annika Lokrantz is a notable inventor based in Ludvika, Sweden. She has made significant contributions to the field of electrical engineering, particularly in the development of advanced semiconductor technologies. Her innovative work has led to the creation of a patented method that enhances the performance of insulated gate bipolar transistors.

Latest Patents

Annika holds a patent for her invention titled "RC-IGBT switching pulse control." This method involves controlling a first and a second reverse-conducting insulated gate bipolar transistor (RC-IGBT) that are electrically connected in series. The design includes a collector of the first RC-IGBT connected to a positive pole of a direct current voltage source, while the emitter of the second RC-IGBT is linked to the negative pole. The configuration allows for the formation of an alternating current terminal, with gate voltage applied to the respective gates of both RC-IGBTs. The gate voltage is controlled based on the magnitude and direction of the output current on the AC terminal, along with a command signal that alternates between two values. Annika's innovative approach has the potential to improve the efficiency and reliability of power electronics.

Career Highlights

Annika Lokrantz is currently employed at Abb Schweiz AG, where she continues to push the boundaries of technology in her field. Her work at Abb Schweiz AG has allowed her to collaborate with other talented professionals and contribute to groundbreaking projects in the semiconductor industry.

Collaborations

Throughout her career, Annika has worked alongside notable colleagues such as Kristoffer Nilsson and Ying Jiang-Häfner. These collaborations have fostered an environment of innovation and creativity, leading to advancements in their respective fields.

Conclusion

Annika Lokrantz is a pioneering inventor whose work in RC-IGBT technology exemplifies the spirit of innovation. Her contributions to the field of electrical engineering are significant, and her patented methods are set to influence the future of power electronics.