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A novel real time simulation (RTS) system for high power rail traction is developed. It includes simulation models of high power back-to-back converter and a synchronous motor (SM). The system runs on a dSPACE based platform connected to real converter and motor controllers by actual hardware interface. An algorithm of decoupling discrete event of converters and continuous time systems of SM is proposed...
A new electronic ballast circuit for High Intensity Discharge (HID) lamps to achieve an "ultra" high efficiency of 95% is proposed In this paper. The first stage of the ballast which Is the power factor correction boost converter has demonstrated an efficiency of >97% using SI MOSFET as the switch. The second stage of the ballast, a DC to high frequency Inverter has been designed to achieve...
Controlling of a specific harmonic by a switching converter with switching frequency lower than 1 kHz was originally implemented by two-level optimal pulse pattern with unsymmetrical switching angles, namely by OPUS-technique. That means, given a desired fundamental and one or more specific harmonics, the problem is to find the switching times (angles) that produce the fundamental while generating...
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