The control and operation of electronic systems relies and depends on the availability of the power supply. Rechargeable batteries have been more pervasively used as the energy storage and power source for various electrical and electronic systems and devices, such as communication systems, electronic devices, renewable power systems, electric vehicles, etc. However, the rechargeable batteries ...

This paper presents a new line-interactive UPS (uninterruptible power supply) system with active power-line conditioning capability. This system uses one power electronic inverter to implement two functions: maintaining uninterruptible power for critical loads, and suppressing power-line harmonics. The system offers efficient and economical power conditioning. Experimental validation is given.

System reliability greatly improved because Push-in terminal block adopted for the power input and Cooling method Diagram of the Input/output circuit block. FET devices, refer to the graph of the backup time to obtain an estimation of the initial value of the stop using it, disconnect the input power supply. Nevertheless, uninterruptible power supply requires a large amount of batteries, discha...

this paper presents the new topology of three phase on line uninterruptible power supply (ups) by employing t-source inverter (tsi) with maximum constant boost pulse width modulation (pwm) control and the results are compared with the conventional uninterruptible power supply (ups). the conventional ups consists of voltage source inverter (vsi) with step up transformer or dc-dc booster which de...

Uninterruptible Power Supplies (UPS) are finding increased applications with the advent of sophisticated electronic equipment. Low power equipment like FAX machines, Personal Computers, etc., form the major portion of the applications. There is a need for cost-effective, light and sleek UPS in the low power range. In low power UPS, the presence of line frequency magnetic components makes the sy...

Generally uninterruptible power supply (UPS) is used to maintain a stable electric power supply to critical loads with high quality power protecting them against unexpected power failure. For example, medical facilities and data-storage computer systems require fast response, compensation and immediate availability of electrical power. Considerably affect these characteristics is energy storage...

The given paper deals with uninterruptible power supplies utilizing supercapacitors (ultracapacitors). Different types of supercapacitor are described. Various opportunities of supercapacitor implementation are discussed, pros and cons are compared. Experimental comparison of lead-acid battery with supercapacitor is done.