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A circuit topologies family of single-stage parallel uninterruptible AC/DC converter with high power factor are presented. The topology includes four sections, i.e. full bridge rectifier, parallel converter with power factor correction(PFC), uninterruptible power supply and fast output voltage regulation. The converter has lots of advantages such as: single stage power conversion, uninterruptible...
In this paper, based on the analysis of the equivalent output impedance and parallel model of single phase SPWM inverter, a decoupling control strategy of parallel inverter system is proposed. The output power is decomposed into active power and reactive power to regulate the amplitude and phase of the reference signal. A three-phase balanced current is constructed according to the instantaneous reactive...
The conventional method by power regulation to restrain the circulating current is affected by the parallel impedance and has other disadvantages in the response speed and harmonic component of circulating current, etc. The strategy to restrain circulating current based on tracing transient average current feedback was proposed in the paper by the combination of tracing transient average current feedback...
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