Methods and devices for the AC electric supply of a load without interruption of the AC signal
Abstract
Abstract Translated from French L'invention concerne l'alimentation électrique alternative, sans discontinuité, d'une charge, à partir d'une source principale alternative (bornes 13, 14) ou d'une source auxiliaire de secours (bornes 15, 16). Lorsque la source principale est à nouveau reliée aux bornes (13, 14) à la fin d'une coupure, on commande (en 26) une diminution de la fréquence de l'oscillateur (19) de l'onduleur statique (19, 20, 3), fréquence qui est comparée (en 27) à celle de la source principale. A la coïncidence, on raccorde, avec des interrupteurs (28, 24), la source principale au primaire du transformateur (1) et on bloque (en 23) l'onduleur statique. The invention relates to an alternative, uninterruptible power supply of a load from an alternative main source (terminals 13, 14) or from an auxiliary backup source (terminals 15, 16). When the main source is again connected to the terminals (13, 14) at the end of a cut-out, a reduction (26) in the frequency of the oscillator (19) of the static inverter (19, 20) is commanded , 3), frequency which is compared (in 27) to that of the main source. At the coincidence, one connects, with switches (28, 24), the main source to the primary of the transformer (1) and one blocks (in 23) the static inverter.
Inventors
- 👤 Michel Claude Legoult
Bibliographic Details
Claims Analysis
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