Abstract
The power supply of micro grid is less stable than of conventional grid, and the harmonic pollution is more severe, aiming at this situation, in order to increase dynamic response performance, and the steady-state compensation accuracy of an active power filter (APF), a new design scheme of APF applied to AC micro grid is proposed. In this scheme, ip −iq algorithm is used to detect the harmonics, and the hysteresis control method is applied to control the compensation current, and the fuzzy adaptive PI controller is applied to maintain the DC-side voltage. An test platform using FPGA EP3C55F484C8N as the controller is established. The effectiveness and correctness of the proposed control method are verified in the simulation and experiment.
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