Harald Schmidt

TL;DR: In this paper, an optical module consisting of a circuit support (10), a cased semiconductor element (12) placed on the circuit support, and a lens unit (14, 16, 18, 20, 21) for projecting electromagnetic radiation onto the semiconductor elements was described.

TL;DR: In this paper, a test facility was constructed at Forschungszentrum Julich (FZJ) to evaluate the performance and dynamic behavior of a test drive system for vehicles with polymer electrolyte membrane fuel cells (PEMFC).

TL;DR: The report describes the 1-MVA transformer's detailed design, and presents the results of electrical and thermal transformer routine tests (e.g., measurement of load losses and no-load losses) that highlights the future perspective of HTS transformers for railway applications.

TL;DR: In this article, the authors summarized world-wide efforts in the development of superconducting transformers and reports on the progress achieved at Siemens, where they developed a 1-MVA demonstrator transformer for laboratory testing, exhibiting innovative features like horizontal design, cabled-conductor windings and closed cooling cycle with sub-cooled nitrogen.

TL;DR: In this article, the effective interface between the electrolyte layer and an electrode layer is increased by a suitably treated surface of the electrolytes layer or by a porous and/or rough interlayer.