System for power conversion with reactive power compensation
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United States of America Patent
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May 15, 2018
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N/A
app pub date -
Jan 18, 2017
filing date -
Dec 23, 2016
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Abstract
A power conversion system can be implemented to actively control a load while compensating for reactive power which may be sourced or consumed by an input filter circuit. In one aspect, the power conversion system can receive externally supplied multi-phase AC electric power, such as three-phase power from a power grid, and use a converter circuit to generate a DC bus. The power conversion system can then use an inverter circuit to generate multi-phase AC electric power from the DC bus for driving the load with adjustable frequencies and/or amplitudes as desired. The input filter circuit can be coupled to the converter circuit to filter out harmonics resulting from switching of the converter circuit. The power conversion system can receive feedback signals which may be used to determine reactive power sourced or consumed by the filter circuit, and can adjust the converter circuit to compensate for such reactive power.
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