Design of an portable emergency power supply with multi input sources

This paper presents design guideline of portable emergency power supply with multi input and output requirements. The available structures which satisfy design considerations are proposed and analyzed. Based on the chosen structure, suitable topology and controller of each part applied to charge a battery in a wide range of input condition. In addition, system operation algorithm is proposed according to input and battery voltage condition. The verification of designed prototype for portable emergency power supply is carried out by experiment results in various operation modes.