VARIABLE DIRECT VOLTAGE MICRO-GRID AND METHOD FOR CONTROLLING THE SAME

摘要

The invention relates to a micro-grid supplied with direct current, with variable voltage distributed at the level of the common supply bus (1), and to a method for controlling this micro-grid. According to the invention, the micro-grid includes unidirectional sources (2, 4), which inject energy into the micro-grid based on electronic power converters (3, 5), and bidirectional sources (6, 8), which inject or absorb energy from the micro-grid based on power converters (7, 9) with two conversion stages (10, 11), in which a plurality of alternating current consumers (13) and direct current consumers (15) absorb the energy transported in the micro-grid using electronic power converters (14, 16), and in which a central control unit (17) provides at the output the voltage reference (12) necessary to supply the common bus (1) of the micro-grid.