Zobrazeno 1 - 10
of 854
pro vyhledávání: '"W. Kolar"'
Publikováno v:
Electronics Letters, Vol 60, Iss 13, Pp n/a-n/a (2024)
Abstract Three‐phase ac choppers feature output voltage amplitude controllability and enable more compact system realizations compared to autotransformers. For the practical realization advantageously standard power transistor with unipolar voltage
Externí odkaz:
https://doaj.org/article/339ede1b7de04c32924096cd5168539f
Autor:
Rosario V. Giuffrida, Andreas Horat, Dominik Bortis, Tim Bierewirtz, Krishnaraj Narayanaswamy, Marcus Granegger, Johann W. Kolar
Publikováno v:
IEEE Open Journal of the Industrial Electronics Society, Vol 5, Pp 359-375 (2024)
A novel implantable total artificial heart, hereinafter referred to as the ShuttlePump, is currently under development in a research collaboration between the Medical University of Vienna, the Power Electronic Systems Laboratory of ETH Zurich and Cha
Externí odkaz:
https://doaj.org/article/60a27d899f074e0089beff1196ec26a0
Autor:
Gwendolin Rohner, Tino Gfrorer, Pascal S. Niklaus, Dominik Bortis, Mario Schweizer, Johann W. Kolar
Publikováno v:
IEEE Access, Vol 12, Pp 7356-7371 (2024)
Integrated Motor Drives (IMDs) are gaining popularity in industrial Variable Speed Drive (VSD) applications, thanks to their more compact realization and simpler installation. However, mission profiles of, e.g., servo applications, demand overload to
Externí odkaz:
https://doaj.org/article/8b6adea6e94a4135b289d1e1da4b2e72
Publikováno v:
Actuators, Vol 13, Iss 4, p 122 (2024)
This paper provides a comparative analysis between a force sensor and an eddy current sensor, focusing on their usability to determine the position of a circular levitating permanent magnet (PM) mover within an axially symmetric magnetic levitation p
Externí odkaz:
https://doaj.org/article/f86f19239d6d4c6cbadf11575cc7a56a
Publikováno v:
Machines, Vol 12, Iss 4, p 223 (2024)
This paper presents a decoupled bearingless cross-flow fan (CFF) that operates at a supercritical speed, thereby increasing the maximum achievable rotational speed and fluid dynamic power. In magnetically levitated CFF rotors, the rotational speed an
Externí odkaz:
https://doaj.org/article/4381e7df9efb45a585c19e374dabfd8a
Publikováno v:
Actuators, Vol 13, Iss 3, p 114 (2024)
This work introduces a novel sensing concept based on reaction forces for determining the position of the levitating magnet (mover) for magnetic levitation platforms (MLPs). Besides being effective in conventional magnetic bearings, the applied appro
Externí odkaz:
https://doaj.org/article/f4b8054e4a1b4925b7749dd1da96af34
Autor:
Rosario V. Giuffrida, Raffael Senti, Dominik Bortis, Tim Bierewirtz, Krishnaraj Narayanaswamy, Marcus Granegger, Johann W. Kolar
Publikováno v:
IEEE Open Journal of the Industrial Electronics Society, Vol 4, Pp 732-747 (2023)
In the context of a collaboration between the Medical University of Vienna, the Power Electronic Systems Laboratory of ETH Zurich, and Charité Berlin, the novel implantable total artificial heart ShuttlePump is currently being developed. Its novel l
Externí odkaz:
https://doaj.org/article/7e03fe24290b44ff92885e7a0f96cfe5
Autor:
Gwendolin Rohner, Tino Gfrorer, Pascal S. Niklaus, Jonas Huber, Dominik Bortis, Mario Schweizer, Johann W. Kolar
Publikováno v:
IEEE Open Journal of Power Electronics, Vol 4, Pp 934-944 (2023)
With today's demand for increased industrial process automation a trend towards Integrated Motor Drives (IMDs) has evolved allowing a low complexity and compact installation of the drive system. Especially servo applications with high short-term over
Externí odkaz:
https://doaj.org/article/2ca5208bef6e477f97da990481ec4e68
Publikováno v:
IEEE Open Journal of Power Electronics, Vol 4, Pp 674-686 (2023)
Realizing an isolated three-phase Power Factor Correction (PFC) ac-dc converter as a phase-modular system, i.e., by star-connecting three single-phase PFC rectifier front-ends with individual isolated dc-dc converter stages generating a common dc out
Externí odkaz:
https://doaj.org/article/4aa87611b2ec4e238171f940a54b06b1
Publikováno v:
IEEE Open Journal of Power Electronics, Vol 4, Pp 450-462 (2023)
Compared to state-of-the-art IGBTs, SiC power semiconductors allow to achieve ever higher system efficiencies and higher power densities in next-generation Variable Speed Drives (VSDs), thanks to their smaller relative chip size, ohmic on-state chara
Externí odkaz:
https://doaj.org/article/dc1b00c450bc4810a1c54c89efe5845c