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The objective of this paper is to propose a constant-frequency asynchronous sigma-delta modulation (CF-ASDM) control strategy for the transformerless H5™ inverter. By comparing to the conventional asynchronous sigma-delta modulation (ASDM) with variable switching frequency, the proposed CF-ASDM can simplify the filter design and reduce the computational burden of the digital signal processor while...
The objective of this paper is to propose a modularized bi-directional grid-tied inverter (BGI) with asynchronous sigma-delta modulation (ASDM) control for the renewable energy (RE)-supplied DC power system. The proposed BGI can be operated either in the grid-tied mode (GTM) or the power factor correction mode (PFCM) which is necessary features for the RE-supplied DC power system. The proposed BGI...
The objective of this paper is to propose a current-mode asynchronous sigma-delta modulation (CASDM) control strategy for grid-tied inverters. The proposed CASDM has the merits of circuit simplicity and low harmonic components which is especially good for grid-tied inverter applications. The major contribution of this paper includes that developing the CASDM control scheme thoroughly and applying...
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