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Three-Phase Boost Rectifier Control Implemented Using Hardware-In-The-Loop
In this paper, constant switching frequency current control of a three-phase boost rectifier is presented and implemented on a hardware-in-the-loop platform. The applied algorithm is capable of minimizing the harmonic content in both grid-side currents and output voltage, even under significant unbalance in supply voltages and input impedances. The constant switching frequency facilitates filtering of grid-side currents, thereby reducing the volume and cost of the filter components. While control algorithms similar to this one have been tested in simulations, no experimental verification has been offered so far. The hardware-in-the-loop implementation presented in this paper is a valuable in bridging the gap between simulation and the experiment. The control algorithm is implemented on an actual FPGA-based controller board, whereas all power components are simulated in real time on the hardware-in-the-loop platform. Various operating modes are analyzed to demonstrate the excellent performance of the algorithm regardless of the grid-side conditions.