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For the energy storage is so large, heavy and not easily integrated, economical AC/AC converters, without DC energy storages, are used to dynamic voltage restore. The virtual rectifying and inverter topology, whose structure is compact and can naturally current commutate, is easily controlled and more reliable. Since that the dynamic voltage restorer (DVR) has strict demand of quick dynamic responses...
This paper provides a zero-current-switching (ZCS)-pulse width modulation (PWM) half-bridge boost rectifier with output voltage balance control using ZCS auxiliary resonant circuits. In the proposed ZCS-PWM half-bridge boost rectifier, ZCS in the active switches and ZCS in passive switches are performed without additional current stress. In addition to reduce switching losses, significant reductions...
This paper provides a hybrid maximum power point tracker (MPPT) with both perturbation and observation method and open circuit voltage method in solar power system. The open circuit voltage method is initially used to retrieve the open circuit voltage corresponding to maximum power point. The perturbation and observation method starts up instead while the input voltage of the power converter reaches...
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