This paper presents a synchronous current control method for a three-level neutral point clamped inverter. Synchronous reference\nframe control based on two decoupled proportional-integral (PI) controllers is used to control the current in direct and quadrature\naxes. A phase disposition pulse width modulation (PDPWM) method in regular symmetrical sampling is used for generating the\ninverter switching signals. To eliminate the harmonic content with no phase errors, two first-order low pass filters (LPFs) are used\nfor the dq currents. The simulation of closed-loop control is done inMatlab/Simulink. The Vertex-5 field programmable gate array\n(FPGA) in Labview/CompactRio is used for the implementation of the control algorithm. The control and switch pulse generation\nare done in independent parallel loops. The synchronization of both loops is achieved by controlling the length of waiting time for\neach loop.The simulation results are validated with experiments. The results show that the control action is reliable and efficient\nfor the load current control
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