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This work presents a dead-time compensation technique for robust predictive current control of grid-connected voltage source inverter. Among current controls, dead-beat predictive controllers are one of the fastest, but are extremely sensitive to inconsistencies between the model and the actual plant. Dead-time modifies the plant model and is one of the main sources of distortion in high dynamic range...
A new type of linear-programming based Model Predictive Control (LP-MPC) is presented in this work. The MPC optimization process is reformulated as a linear programming problem and solved using the Simplex method. The optimization result is the duty cycle of a fixed-frequency pulse width modulator (PWM) which switches the transistors of a three-phase grid-connected voltage source inverter. In opposition...
A simple algorithm has been developed to control small and large multilevel inverters using Space Vector Modulation. It looks for a suitable hexagon near the reference voltage rather than the usual three nearest vectors. Then, switching vectors and their duty cycles are computed using straightforward equations, independent of the number of levels and easy to use in digital microprocessors. Several...
A graphical method, easy to understand and easy to implement, has been developed for two-level and multi-level space vector modulation. Switching sequences can be computed with no need of solving neither multi-variable inverse problems nor expensive trigonometric functions. Proposed method has been validated through simulations and physical implementations.
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