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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...
This paper discusses suitable short-through mode for a Z-source inverter using SiC-MOSFET to achieve high switching frequency operation. The Z-source inverter has short-through mode for boost operation and several control techniques about short-through mode have been discussed from points of device stress and boost ratio; however, loss analysis from perspective of short-through mode implementation...
An improved circuit topology of Z-source inverter is presented that will meet the requirements and features of the Hybrid/Electric vehicle power control system. It is able to perform rectangular wave modulation for motor drive control depending on the drive condition of a motor which cannot be achieved from the conventional Z-source inverter.
This paper proposes a “complementary inverter”, which consists of p-channel and n-channel MOSFETs in a leg. This configuration can minimize dead time; therefore, harmonics generated by the dead time can be eliminated, without any compensation controls. Possible leg configurations and appropriate gate driver are discussed. Model for estimating dead time is shown and was confirmed by experiments with...
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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