New Current Control Structure for Shunt Active Power Filters
作者： Ion Boldea , Lucian Asiminoaei , Cristian Lascu , Frede Blaabjerg
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摘要: The paper describes a new current control structure for active power filters. proposed controller uses an array of resonant controllers, one the fundamental, and each harmonic, to achieve zero phase-shift unity gain in close-loop transfer function selected harmonics. complete is superposition all individual harmonic controllers. novelty consists on design, which based pole-zero cancellation technique, taking into account load at frequency. An important feature that cross-coupling between d- q-axis considered compensated within controller. This gives stable operation higher frequencies filter compared similar existing A comparative theoretical experimental analysis with provided. results are supported by measurement 7 kVA laboratory setup, indicating reduction total distortion factor from 27 % less than 2
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