Analysis of synchronous machines

Analysis of Synchronous Machines, Second Edition is a thoroughly modern treatment of an old subject. Courses generally teach about synchronous machines by introducing the steady-state per phase equivalent circuit without a clear, thorough presentation of the source of this circuit representation, which is a crucial aspect. Taking a different approach, this book provides a deeper understanding of complex electromechanical drives. Focusing on the terminal rather than on the internal characteristics of machines, the book begins with the general concept of winding functions, describing the placem

Induction machine based flywheel energy storage system

WOS: 000181569700011This study introduces a field oriented controlled (FOC) induction machine based flywheel energy storage (FES) system fed from a 20 kHz high frequency (I-IF) ac link and pulse density modulated (PDM) Converter. The feasibilty of FES system is investigated both in software and hardware and is demonstrated succesfully in both cases. The investigated system offers a good potential as a temporary energy storage system for various applications from automobile industry to aerospace applications

Starter/generator employing resonant-converter-fed induction machine - Part I: Analysis

WOS: 000166078300024A new procedure to start a jet engine (JE) and to generate power by means of a single induction machine (IM) directly coupled to the turbine is presented. The JE is brought to an initial speed by the motoring operation of the IM. Later, the IM is taken into generating mode and the turbine is applied its excitation. The turbine catches up and starts to drive the induction generator (IG). The generated power is converted to a three-phase (3 empty set), 400 Hz voltage-regulated bus via a double stage power conversion utilizing a 20 kHz parallel resonant high frequency (HF) ae link and pulse density modulated (PDM) converter technology. Independent of the engine speed, a constant amplitude and constant frequency 3 empty set voltage-regulated ac bus is formed and maintained by the proper control of the power converters. Here the feasibility of operation of such a system has been demonstrated in software where the JE turbine is modeled and replaced by a de machine. An introduction, background, operation priciples of the overall system, and the related software simulations are presented and discussed