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Reliability of Active Front End (AFE) converter can be improved if converter faults can be identified before startup. Startup diagnostics of the LCL filter can be an useful tool to accomplish this. An algorithm based on Fast Fourier Transform (FFT) of the filter step response is shown to be able to detect variation of filter components. This is extended to consider conditions of short circuit and...
Improvement in the reliability of grid-connected inverters is desirable with their increasing use. Inverter reliability tests usually focus on thermal testing of semiconductor devices. Regenerative methods are adopted to minimize the energy consumed during these tests. Regeneration requires additional systems — converters or passive components. In this paper, a novel method for thermal testing of...
An attractive feature of grid interactive single-phase to three-phase converters is the ability to deliver a fraction of total load power directly from the source. A fixed frequency single-phase to three-phase converter is explored in this paper which reduces the size and cost of the system, and results in better efficiency. This paper proposes control strategy for a three leg single-phase to three-phase...
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