This paper develops the photovoltaic bidirectional inverter (BI) operated in dual mode for the seamless power transfer to DC and AC loads. Normal photovoltaic (PV) output voltage is fed to boost converter, but in space application, boost converter is not so preferable. To overcome this, buck and boost converters are proposed in this paper.
The bidirectional inverter works in dual mode, i.e., grid-connected mode and rectifier mode. During the both conditions, the load must be critical. Power distribution between PV system, grid, and load is illustrated in Figure 15. From 0-0.8 sec, there is no PV generation, but to meet the load requirement, the total power is supplied from the grid.
And the inverter current is in individual axis. The active power loop is controlled by the dc link voltage. Then, the dc link voltage and the reactive power loop is controlled by the reactive component of the grid current. Perfect decoupling can be obtained by the proper design of the control.
Since the output of bidirectional inverter (BI) be absolutely matched with grid, therefore, the control gate pulses for BI which controls the parameters of BI is the modulating signal. These modulating signals are obtained from 3-phase voltage and current is converted to synchronous dq rotating frame by using Park transformation.
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This paper develops the photovoltaic bidirectional inverter (BI) operated in dual mode for the seamless power transfer to DC and AC …
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