초록 ▼

An uninterruptible power supply (UPS) for supplying DC power to a load and a method of providing uninterruptible DC power to a load. In one embodiment, the UPS includes: (1) a first stage rectifier that rectifies AC input power received from a primary power source into DC power at an intermediate vo

An uninterruptible power supply (UPS) for supplying DC power to a load and a method of providing uninterruptible DC power to a load. In one embodiment, the UPS includes: (1) a first stage rectifier that rectifies AC input power received from a primary power source into DC power at an intermediate voltage, (2) a second stage rectifier, coupled to the first stage rectifier, that converts the DC power at the intermediate voltage into DC power for the load at an output voltage that is lower than the intermediate voltage and (3) a solid state transfer switch, coupled between the first stage rectifier and the second stage rectifier, that transfers secondary input power received from a secondary power source to the second stage rectifier only when a voltage of the secondary input power exceeds the intermediate voltage.

대표청구항 ▼

[ What is claimed is:] [1.] An uninterruptible power supply (UPS) for supplying DC power to a load, comprising:a first stage rectifier that rectifies AC input power received from a primary power source into DC power at an intermediate voltage;a second stage rectifier, coupled to said first stage rec

[ What is claimed is:] [1.] An uninterruptible power supply (UPS) for supplying DC power to a load, comprising:a first stage rectifier that rectifies AC input power received from a primary power source into DC power at an intermediate voltage;a second stage rectifier, coupled to said first stage rectifier, that converts said DC power at said intermediate voltage into DC power for said load at an output voltage that is lower than said intermediate voltage; anda solid state transfer switch, coupled between said first stage rectifier and said second stage rectifier, that transfers secondary input power received from a secondary power source to said second stage rectifier only when a voltage of said secondary input power exceeds said intermediate voltage.