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A fully digital, non-linear, wide bandwidth, current controller for DC-AC and DC-DC voltage source converters is presented in this paper. Exploiting oversampling, the controller mimics an analog hysteresis current controller, but does not employ analog comparators and digital to analog converters. Indeed, it fully virtualizes the hysteresis controller's operation and, based only on a non linear, efficient,...
Common mode voltage reduction is one of the most important issues for transformerless PV grid-connected inverters. Many interesting single-phase inverter topologies have been reported to reduce the common mode voltage. However, three-phase PV inverter topologies with reduced common mode voltage are not well explored. In this paper, a novel three-phase seven-switch (H7) inverter is proposed to reduce...
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