| 摘要 |
<p>The system (1) has a transformer (12) to feed electrical energy from bus conductors (8, 9) into a power grid (2), and a controller (11) to adjust the voltage drop between the bus conductors. A current sensor (10) of each of a set of strings (5) reports whether a reverse current is flowing to the string. The controller reduces system voltage present between the bus conductors to stop the reverse current. The other strings provide electrical energy over the transformer to the power grid, as long as the reduced system voltage is sufficient for supplying the electrical energy to the power grid. An independent claim is also included for a device for supplying electrical power to a power grid from a set of series-connected photovoltaic modules.</p> |
