NO-BREAK POWER SUPPLY SYSTEM

摘要

FIELD: electrical engineering; AC power supply to important loads. SUBSTANCE: system has n single-phase synchronous power supplies each incorporating series-connected emf source and unidirectional AC component; like-polarity outputs of single-phase synchronous power supplies are combined and connected to common load; novelty is that each unidirectional AC component is built up of four unidirectional electric switches of two types; every two different-type switches are interconnected in parallel and connected between one pole of emf source and load and their control inputs are connected to other pole of same emf source. EFFECT: improved reliability due to parallel connection of n single-phase synchronous power supplies with unidirectional AC components preventing transmission of power from load back to power supply in case of disconnection or failure of respective AC supply. 3 cl, 2 dwg