This inventor holds 6 USPTO granted patents. Top assignees: Aros Electronics Ab, Iro Ab, Aktiebolaget Iro. Active years: 1986-2020.
Location History:
- Brandsbovaegen, SE (2004)
- Nol, SE (1986 - 2006)
- Molndal, SE (2020)
Company Filing History:
3 out of 10 
2 out of 62 
1 out of 53 
Years Active: 1986-2020
Title: Jerker Hellstroem: Innovator in Electric Motor Systems
Introduction
Jerker Hellstroem is a notable inventor based in Nol, Sweden. He has made significant contributions to the field of electric motor systems, holding a total of 6 patents. His work focuses on enhancing the efficiency and functionality of multiphase electric machines.
Latest Patents
One of his latest patents is titled "DC bus ripple elimination for multiphase electric machines." This invention discloses a multiphase electric motor system and a method for controlling it. The method involves modulating a plurality of carrier signals with modulation signals to generate a multiphase motor supply signal. This signal includes a modulated phase signal for each phase of the electric motor. The invention defines a set of time windows in each period of the multiphase motor supply signal, allowing for the modification of selected modulated phase signals by delaying the associated carrier signal. This results in a shifted multiphase motor supply signal, which effectively reduces DC bus ripple. This innovation enables the use of smaller filter capacitors in electrical motor systems. Additionally, an analogous multiphase electric generator system and method for controlling it are also disclosed.
Another significant patent is related to a "yarn processing system and yarn feeding device." This invention comprises a textile machine and at least one yarn feeding device connected to peripheral auxiliary devices. The yarn feeding device features a computerized control device that communicates with the auxiliary devices. Certain auxiliary devices are designed to generate and/or receive signals, and the yarn feeding device includes a local, autonomous communication bus system for transmitting serial data to and from the auxiliary devices.
Career Highlights
Throughout his career, Jerker Hellstroem has worked with several companies, including Aros Electronics AB and IRO AB. His experience in these organizations has contributed to his expertise in electric motor systems and related technologies.
Collaborations
Jerker has collaborated with notable individuals in his field, including Lars Helge Gottfrid Tholander and Niklas Wahlgren. These collaborations have likely enriched his work and led to further innovations.
Conclusion
Jerker Hellstroem is a distinguished inventor whose contributions to electric motor systems have made a significant impact in the industry. His innovative patents reflect his commitment to advancing technology in this field.