Method and apparatus for providing battery charging in a backup power system

摘要: A battery in a back-up power system is charged during the time that available from main AC by utilizing transformer and inverter. When source, an voltage appears across primary of transformer, which connected to Switches bridge inverter are turned on for relatively brief period short causing current through leakage inductances rapidly build up. switching devices off, induce continue flow into anti-parallel diodes, normally back biased battery, thereby charging with energy stored inductances. The reaches zero when inductance fully discharged. cycle may be repeated turning at periodic points time, allowing dwell periodically zero, or immediately again zero.