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96 Hybrid-Renewable Energy Systems in Microgrids

In this method during zero state, all switches are disconnected, and the extra
switches that are inserted in the output (S+, S−) are connected to short circuit the
output. Therefore, there will be no path between the output and the PV panels during
this state and the leakage current does not happen.
It is worth mentioning that many approaches have been proposed since then that
all of them work on the same principle. They avoid the current path to the PV panels
during zero state [14].

References

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[12] M. Victor, US 2005/0286281 A1, 2005
[13] H. Schmid, 7046534, 2006
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