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Static Compensators are used to improve power quality. In order to achieve this objective the control system requires accurate knowledge of the positive and negative sequences and user selected harmonics. This paper presents a technique based on an unusual PLL that simultaneously estimates the sequence components and several harmonics. Both simulation and experimental results demonstrating the technique...
In this work a phase-locked loop (PLL) is presented, which is able to provide an estimation of the angular frequency, and both the positive and negative sequences of the fundamental component of a three-phase signal. These sequences are provided in fixed reference frame coordinates, and thus the proposed algorithm is referred as fixed reference frame PLL (FRF-PLL). In fact, the FRF-PLL does not require...
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