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This paper proposes a single-stage inverter topology for grid connected PV systems. Isolated voltage generated by the solar modules is effectively used in a neutral point clamped multilevel inverter to generate high quality AC voltage for feeding into the grid. The control scheme is implemented in synchronously rotating reference frame for independent control of active and reactive power. Loss calculation...
Output dc voltage from Fuel Cell (FC)/Photo Voltaics (PV) needs to be conditioned and converted into ac form before integrating to grid. Normally, two stage converters are used for this purpose. Two stage converters have several disadvantages like low efficiency, more number of components, big size, etc. especially when they are operated at low input voltages. In this paper, a coupled inductor based...
A computing comparison of the conduction losses and switching losses between three-level and two-level inverters is proposed under SVPWM (Space Vector Pulse Width Modulation). The model of simulation is established. Partial results are verified in the experiment. This paper compares the efficiency of three-level and two-level inverter under SVPWM. The simulation and experimental results demonstrate...
Photovoltaic (PV) energy generation is becoming an increasingly prevalent means of producing clean, renewable power. PV is renewable, reliable, and domestically secure. One of the most important components of PV systems is the inverter technology that converts the direct current (DC) power output from the PV panel or array to alternating current (AC) used on both the individual end-user and centralized...
This paper presents a method for characterizing the average error voltage in the zero-crossing region of the inductor current during the dead time. The analysis makes use of an existing analytical solution to model the reverse recovery of the power diodes in this region. The proposed analytical solution is verified by experimental results.
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