Schneider Electric Industries Sas

Jacques Ecrabey

Sébastien Carcouet

Christian Petit

Antonio Almeida

Yves Jeanjean

A system for controlling photovoltaic electricity production equipment having photovoltaic modules each equipped with a DC/DC microconverter connected to a DC bus, a DC bus manager, and an inverter for converting the direct current from the photovoltaic panels into alternative current intended for an electrical distribution network. Power is injected into the DC bus when the voltage of the DC bus is less than a minimum voltage until the minimum voltage is reached. Each of the microconverters injects a maximum power from the photovoltaic modules into the DC bus when the voltage of the DC bus is between a first voltage and a second voltage. The injecting of power from the photovoltaic modules into the DC bus is stopped when the voltage of the DC bus is less than a low threshold voltage or greater than a high threshold voltage.

Secure control mechanism for distributed photovoltaic system

The invention relates to an alternating voltage generator () comprising a direct voltage source () that supplies a power bus, a bus capacitor () connected to the power bus, an inverter module () supplied by the power bus and equipped with several normally-on JFET power transistors () in order to deliver an alternating voltage. The generator () comprises a current limiting normally-on JFET transistor () which is located on the power bus in series between the bus capacitor () and the inverter module (), the limiting current of the limiting transistor () being less than the limiting current of each of the power transistors ().

Growing community of inventors

Guilherand Granges, France

Jacques Ecrabey