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The development of a flywheel uninterruptible power supply incorporating electrolytic capacitorless inverters and converters, optocouplerless power device drive circuits, loss reduction of high-frequency insulated-gate bipolar transistor (IGBT) inverters, and high-response regeneration control of the induction motor is described. Results from experiments(More)
In general, it is well known that the induction type magnetic levitation (Maglev) has advantages of a contactless support and a passive control for the levitation and propulsion of a conductive sheet metal. However, heat loss caused by the eddy current inside the sheet metal decreases the efficiency remarkably. In order to use that eddy current more(More)
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