Improved finite set model prediction control method suitable for inverter
A finite set model and predictive control technology, applied in the direction of output power conversion device, AC power input conversion to DC power output, electrical components, etc., can solve the problem of affecting the power quality of the inverter, the switching frequency is not fixed, and endangering the safety of the grid and stability issues, to achieve good adaptability, less calculation, and improve power quality
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[0025] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0026] Such as figure 1 As shown, the topology of a single-phase grid-connected inverter consists of four parts: input DC source, single-phase inverter bridge, output filter, and AC grid. S 1 ~S 4 represent four metal-oxide-semiconductor field-effect transistors with antiparallel diodes, V in is the DC bus voltage, i is the grid-connected current of the inverter, L is the grid-side filter inductance, r is the equivalent series impedance of the circuit, v g is the grid voltage (grid-side voltage). In order to simply and clearly illustrate the technical solution of this invention, the filter adopts an L-shaped filter, but it is not limited to an L-shaped filter. Depen...
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