摘要:
The invention relates to a circuit arrangement for a photovoltaic inverter (1), said arrangement comprising two bus lines (8, 9), input terminals (6) for connecting at least one photovoltaic generator (7) to the bus lines (8, 9), one or more DC to AC converter(s) (10) connected to the bus lines (8, 9), a respective circuit-breaker (11) between each DC to AC converter (10) and the bus lines (8, 9) and a number of short-circuit paths (16 to 18) for short-circuiting a voltage present between the bus lines (8, 9), a short-circuit switch (19) being arranged in each path. In said arrangement, at least one (18) of the short-circuit paths between the bus lines (8, 9) runs in front of all circuit-breakers (11) and the short-circuit switch (19) in the at least one short-circuit path (18) between the bus lines (8, 9) is connected in series to a safety fuse (20).
摘要:
A device for optimizing the electric power produced by direct current electric power generators, specifically photovoltaic panels, can be interposed between the generators of a string and its inverter and it includes a DC/DC conversion module suitable to implement an algorithm of MPPT, bypass means and a reactive energy compensation module. By measuring the voltage and current at input and output of the device a suitable algorithm activates and manages the above modules to extract from the panels the maximum amount of energy.
摘要:
Sicherheitssystem für PV-Kraftwerke, das kostengünstig herstellbar ist, und bei dem die DC-Seite eines PV-Kraftwerks in kleinere Modulgruppen eingeteilt wird, innerhalb derer gefährliche Fehlerströme detektiert werden und sofern die Fehlerströme einen bestimmten Schwellwert überschreiten die betreffende Modulgruppe vom Gesamtsystem abgetrennt wird mit Hilfe eines Sicherheits-Trennschalters, der ein schnelles Abschalten einschließlich des Verlöschens des dabei entstehenden Lichtbogens gewährleistet.
摘要:
A solar cell module includes a plurality of solar cells each including a semiconductor substrate, and first electrodes and second electrodes formed on the semiconductor substrate, a plurality of lines connected to the first and second electrodes of first and second solar cells, which are positioned adjacent to each other among the plurality of solar cells, the plurality of lines using a conductive adhesive or insulated from the first and second electrodes of the first and second solar cells through an insulating layer, and a connector positioned between the first and second solar cells and connected to the plurality of lines. A width of the connector is equal to or greater than at least one of a first distance between the first solar cell and the connector or a second distance between the second solar cell and the connector.
摘要:
A power generation amount prediction apparatus includes a first detector, acquisition unit, database, and controller. The first detector detects a measured value of the power generation amount of a photovoltaic power generation device. The acquisition unit acquires a predicted value of the power generation amount by the photovoltaic power generation device at specific times. The database stores the measured value and the predicted value for each of the specific times for a plurality of days. The controller calculates a corrected predicted value for each of the specific times based on a maximum measured value, a maximum predicted value, and a predicted value newly received by the acquisition unit. The maximum measured value and the maximum predicted value are respectively the maximum value, for each of the specific times, of the measured value and of the predicted value for a predetermined number of days.
摘要:
At least one of a message indicating a spec of a PV apparatus 130 and a message indicating a status of the PV apparatus 130 is standardized between an EMS 200 and the PV apparatus 130.