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SEMINAR ON Uninterrupted power supply which is very useful during electricity cut.pptx
- 1. SEMINAR ON UNINTRRUPTED POWER SUPPLY NAME:-PAWANKUMAR YADAV ROLL NO:-080621054
- 2. OUTLINE:- UNINTRRUPTED POWERSUPPLY BASIC PRINCIPLES COMMON POWER PROBLEMS TYPES OF UPS APPLICATIONS OF UPS RESEARCH TOPICS REFERECES
- 3. BASIC PRINCIPLES Anuninterruptible power supply (UPS) is an electronic device that continues to supply electricity to the load for a certain period of time during the utility failure or when the line voltage varies outside the normal limits. A UPS differs from an auxiliary or emergency power system or standby generator in that it will provide instantaneous or near- instantaneous protection from input power interruptions by means of one or more attached batteries and associated electronic circuitry for low power users, and or by means of diesel generators and flywheels for high power users.
- 4. COMMON POWER PROBLEMS The primary role of any UPS is to provide short-term power when the input power source fails. However, most UPS units are also capable in varying degrees of correcting common utility power problems: Power failure Surge Reduction in input voltage Brief high voltage excursion Noise
- 5. TYPES OF UPS OFFLINE/STAND BY UPS:-The offline / standby UPS (SPS) offers only the most basic features, providing surge protection and battery backup. The protected equipment is normally connected directly to incoming utility power. When the incoming voltage falls below a predetermined level the SPS turns on its internal DC-AC inverter circuitry, which is powered from an internal storage battery. The SPS then mechanically switches the connected equipment on to its DC-AC inverter output. The UPS will be designed to power certain equipment, such as a personal computer, without any objectionable dip or brownout to that device.
- 6. CIRCUIT DIAGRAM OFOFFLINE UPS
- 7. LINE-INTERACTIVE UPS:- *The line-interactive upsconsist of a multi- tap variable-voltage autotransformer *This type of UPS is able to tolerate continuous undervoltage brownouts and overvoltage surges without consuming the limited reserve battery power. *it is easier to do the switching on the line-voltage side of the transformer because of the lower currents on that side.
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- 9. APPLICATIONS OF UPS:- N+1 Multiple redundancy Outdoor use Internal systems
- 10. RESEARCH TOPICS:- Single-PhaseUninterruptible Power Supply Based on Z- Source Inverter A grid-interactive photovoltaic uninterruptible power supply system using battery storage and a back up diesel generator.
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