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The main circuit topology of active power filter is mainly based on the conventional phase-leg cell. The dead-time control should be introduced to avoid the “shoot-through” phenomenon. It may lead to the decrease of compensation performance. Another combination form of the conventional phase-leg cell, interleaved buck cell, is studied in this paper. Moreover, an interleaved buck cell based full-bridge...
With the progress of “more electric aircraft,” introducing active power filter (APF) technology into the aircraft power system to improve its quality and reliability catches growing interest. In this paper, based on the analysis and modeling of the shunt APF with close-loop control, a feedforward compensation path of load current is proposed to improve the dynamic performance of the APF. The two H-bridge...
With the progress of “More Electric Aircraft”, power capacity of aircraft electric power system is increased. It is not easy for the power-quality characteristics of the system to be in compliance with the harmonic standards by using traditional method to compensate the harmonics introduced by the nonlinear load. Active power filter (APF) gets increasing usage in 50Hz power system for its high performance...
Regular control of parallel active power filter (PAPF) based on the p-q theory is studied in this paper. After evolutional reduction of the control diagram and mathematic derivation of the p-q theory, a generalized conclusion is drawn: regular control scheme could be regarded as a composite control with feedback of dc-link voltage and feedforward of the fundamental load current; under different compensation...
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