A top-down approach that enables readers to master and apply core principles Using an innovative top-down approach, this text makes it possible for readers to master and apply the principles of contemporary power electronics and electromechanic power conversion, exploring both systems and individual components. First, the text introduces the role and system context of power conversion functions. Then the authors examine the building blocks of power conversion systems, describing how the components exchange power. Lastly, readers learn the principles of static and electromechanic power conversion. The Principles of Electronic and Electromechanic Power Conversion opens with a chapter that introduces core concepts in electrical systems and power conversion, followed by a chapter dedicated to electrical power sources and energy storage. Next, the book covers: * Power, reactive power, and power factor * Magnetically coupled networks * Dynamics of rotational systems * Power electronic converters * DC machines * AC machines The text offers readers a concise treatise on the basic concepts of magnetic circuits. Its simple approach to machines makes the principles of field-oriented control and space vector theory highly accessible. In order to help readers fully grasp power electronics, the authors focus on topologies that use a series transistor and diode combination connected to a DC source, a standard building block of today s power conversion systems. Problem sets at the end of each chapter enable readers to fully master each topic as they progress through the text. In summary, The Principles of Electronic and Electromechanic Power Conversion provides the most up-to-date, relevant tools needed by today s power engineers, making it an ideal undergraduate textbook as well as a self-study guide for practicing engineers.

Die Verstandnisse, die uns das Leben vertraut machen und uns in ihm situieren, sind stimmungsmassig erschlossen. Dieses Buch analysiert die systematische und die methodische Rolle der Stimmung in Heideggers Existenzialanalyse.

Zentral sind dabei phanomenologische Analysen:

• des Verhaltnisses zwischen einer unauffalligen Grundgestimmtheit und den extremen Stimmungen, die sie durch Kontrast erst sehen lassen;
• des Wechselspiels zwischen Sichzeigen von Fraglichkeit in Bruchen und fragendem Aufgreifen dieser Fraglichkeit; und
• der eigentumlichen Endlichkeit unseres existenzialen Verstehens, die im Nichtverstehen des Verstandenen selbst liegt. Dass die Verstandnisse, die unser hermeneutisches Geschehen bestimmen, unthematisch sind, verdeckt ihre Fraglichkeit, die sich erst in einer Annaherung zeigt. Es ist eine radikale Heidegger-Interpretation, die unser Geschehen als absolut fragliches herausstellt.