Model predictive current control for four-switch three-phase rectifiers in balanced grids

Model predictive current control for four-switch three-phase rectifiers in balanced grids

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A model predictive current control scheme with dc-link capacitor voltages fluctuation suppression for the four-switch three-phase rectifier (FSTPR) in balanced grids is presented. The proposed control scheme is a type of the finite-control-set model predictive control scheme and is based on the discrete-time model of the system. From this model, the values of input currents and dc-link capacitor voltages are predicted for all switching states of the FSTPR. On the basis of a predefined cost function, the switching state, which minimises the errors between input currents and their references as well as the difference between two dc-link capacitor voltages at the next sampling instant, is selected. Simulation results are presented to confirm the effectiveness of the proposed control scheme.


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      • 4. Zeng, Z., Zheng, W., Zhao, R., et al: ‘Modeling, modulation, and control of the three-phase four-switch PWM rectifier under balanced voltage’, Trans. Power Electron., 2016, 31, (7), pp. 48924905.
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      • 5. Rodriguez, J., Cortes, P.: ‘Predictive control of power converters and electrical drives’ (Wiley-IEEE Press, New York, 2012).

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