Resonant load power conversion device and time division operation method for resonant load power conversion device
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United States of America Patent
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Nov 7, 2017
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app pub date -
Jun 17, 2015
filing date -
Jun 17, 2014
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Abstract
A resonant load power conversion apparatus is provided to lower a switching frequency of each switching device and to reduce the number of main circuit conductors. The conversion apparatus includes a single-phase inverter having a dc input side (Vdc) connected with a dc voltage source and an output side (Vout) connected with a resonant load and outputting a rectangular wave voltage with a resonance frequency. Upper and lower arms on the input side and output side of the single-phase inverter are connected, respective, with switch group circuits 100U, 100V, 100V and 100V each of which includes N series combinations (N is an integer equal to or greater than 2) of two switching devices, connected in parallel with each other by main circuit conductors. The switching devices of the switch group circuits are controlled in a time division switching control mode with a control section.
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