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A novel modulation technique for single phase grid-tied inverter is proposed in this paper. In normal discontinuous current mode (DCM) operation, the output current becomes distorted due to the resonant between parasitic output capacitors of switching devices and inductor during zero current periods if no current control method is applied. This low frequency distortion can be improved in the boundary...
This paper introduces the optimal design of a output filter for a Single-Phase Grid-Tied Inverter considering Continuous and Discontinuous Conduction Modes (CCM and DCM). An optimal design procedure has been proposed, which enables to consider different technologies on the inductor design. Technologies on magnetic materials and wire types has been considered and their benefits for CCM and DCM solutions...
In this paper the Continuous Current Mode (CCM) and Discontinuous Current Mode (DCM) operations of a Single-Phase Grid-Tied Inverter are compared regarding efficiency and power density. Main design guidelines and component models are introduced for both operation modes. Optimal design is used to perform the comparative analysis. It was found that for range of switching frequencies from 10kHz to 100kHz,...
This paper proposes an improved impedance (Z) source inverter topology. Compared to the traditional impedance-source inverter, it can reduce Z-source inverter device voltage stress significantly to perform the same voltage boost, and provides the controllable and stable output power in all load condition. The control strategy of the proposed Z-source inverter is exactly the same as the traditional...
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