Inverter TESTING.pptx ENGINEER REPORT ELECTRICAL

Inverter TESTING.pptx ENGINEER REPORT ELECTRICAL

1. SEMINAR ON INVERTER Submitted To:- Submitted By:- Er . Kapil Sethi Chandan Kr. Sharma H.O.D of E.E.E Deptt . Roll No:-1710897 Sem. 7 th (EEE Branch) Course:- B.Tech SWAMI PARMANAND COLLEGE OF ENGINEERING & TECHNOLOGY

2. Contents Introduction History Classification of Inverter Square wave Inverter Sine wave inverter Modified Sine wave Inverter Block Diagram of Inverter Batteries Advantages and Disadvantages Applications

3. Introduction An inverter is a device that changes or inverts direct current (DC) input to alternating current (AC) output. It doesn't "create" or "make" electricity, just changes it from one form to another. DC in is changed to AC out. Output is usually 120 or 240 volts at 50-cycle alternating current to match line power.

4. Introduction(continued ..)

5. HISTORY

6. Classification of Inverter The Inverters can be classified in to following types based on output Waveform and according to charging process -. According to wave form Square wave Inverter Sine wave Inverter Modified Sine wave Inverter

7. Classification of Inverter

8. Square wave Inverter

9. Sine wave Inverter A power inverter device which produces a multiple step sinusoidal AC waveform is referred to as a sine wave inverter. To more clearly distinguish the inverters with outputs of much less distortion than the "modified sine wave" (three step) inverter designs, the manufacturers often use the phrase pure sine wave inverter.

10. Modified sine wave The modified sine wave output of such an inverter is the sum of two square waves one of which is phase shifted 90 degrees relative to the other. The result is three level waveform with equal intervals of zero volts; peak positive volts; zero volts; peak negative volts and then zero volts. This sequence is repeated. The resultant wave very roughly resembles the shape of a sine wave. Most inexpensive consumer power inverters produce a modified sine wave rather than a pure sine wave.

11. Block Diagram of an inverter

12. BA T TE R IES The runtime of an inverter is dependent on the battery power and the amount of power being drawn from the inverter at a given time. When attempting to add more batteries to an inverter, there are two basic options for installation: Series configuration Parallel Configuration

13. Series configuration If the goal is to increase the overall voltage of the inverter, one can daisy chain batteries in a series configuration. In a series configuration, if a single battery dies, the other batteries will not be able to power the load.

14. Parallel Configuration If the goal is to increase capacity and prolong the runtime of the inverter, batteries can be connected in parallel. This increases the overall ampere-hour (Ah) rating of the battery set. If a single battery is discharged though, the other batteries will then discharge through it. This can lead to rapid discharge of the entire pack, or even an over-current and possible fire. To avoid this, large paralleled batteries may be connected via diodes or intelligent monitoring with automatic switching to isolate an under-voltage battery from the others .

15. ADVANTAGES The price is very cheap; can work with ordinary light bulbs, fans, etc.(Square Sine wave inverter) High quality and inexpensive; using modified square wave; output correction waveform; relatively stable; suitable for ordinary personal users with TV, fan, lamp, computer, hot pot etc.(Modified Sine wave Inverters) Full power output; protection functions; improved modified sine wave output steady; low-power machines also built in fan, you can keep your machine to use for long time; no similar products on the market; can bring printers, rice cookers, vacuum cleaners, small refrigerators and a lot of small appliances (Sine wave Inverters) Pure sine wave inverter output waveform is good; low distortion; low interference to radio and equipment; low noise. In addition, protective functions; high efficiency; suitable for use in the communications , industrial electricity by enterprises and other users

16. DI S AD V ANT A GES Square wave output waveform and not stable enough. (Square Sine wave inverter) Lack of power, cannot run the appliances with same power labeled; it’s easy to damage the machine if customers are not familiar with the operation, the user needs to strictly follow the manufacturers’ instructions. (Modified Sine wave Inverters) Higher prices, the domestic customers know less about it. (Sine wave Inverters) line is relatively complex; high technically demanding for maintenance; more expensive.( Pure sine wave inverter)

17. APPLICATIONS Used in UPS with batteries Used in Solar panels Used in HVDC Transmission Used as a backup purpose