A Modular U.P.S Design with Multiple Interphase Reactor and Double PLL Control

다중인터페이스 리액터와 Double PLL제어를 이용한 Modular U.P.S 설계

A high power U.P.S system utilizing the parallel connection of low power U.P.S is developed. For the purpose of elimination the circular current between U.P.S.s, a digital circuit is employed. Furthermore a double phase synchronization and an interphase reactor are used to eliminate the circular current and the voltage ripples caused by the system parameter unbalances of parall connected U.P.S.s. The digital controller is implemented with ADSP21061 as aspect of a functional convenience.