Multi-Level inverter

Multi-Level inverterA multilevel inverter is a power electronic device which is capable of providing desired alternating voltage level at the output using multiple lower level DC voltages as an input.

Group membersHAMZA SAEED KHAN SP14-EPE-096-6AMUJTABA HUSSAIN SP14-EPE-092-6AWALI-SHAH AFRIDI SP14-EPE-110-6AWASIF ALI SP14-EPE-013-6AAMIR SHAHZAD SP14-EPE-003-6A

dc to ac inverter block diagram

What is inverterDirect current/voltage (DC) converted to alternating current/voltage (AC).

abstractsThis project generates AC sinusoids up to multilevel.It compares existing 2-level inverter with that of our multilevel inverter. ( VSI means Voltage level Inverter )We study their effects on voltagesExisting topologies are same but we get good output from DC i/p

Why this project?

GoalTo get sinusoidal voltage Up to some extent for appliances.Because smoothness for every system is very importantAbrupt change dose not accepted by inductors and capacitorsSo Square wave is not required for us only sinusoidal smooth wave.

What is multi level inverter

Multi level invertersPreferred to conventional inverters we haveCapable of producing stepped stair case form as shown next slide;Gives us wave nearer to pure sinusoidal wave we require for our appliancesWe achieve such a desired output as shown after calculations. fast switching of DC signal giving us multiple levels.

Why Multi level inverters?Because ,In every industry and also in domestic applications, Its output is good nearer to sinusoidal voltage as given example;

Structure of our work

Importance of MLI.Used in every field.It gives us higher powerOperated through multiple switchesPower conditioningIndustrial Motor DrivesPower Grids Transportation

DrawbacksHaving complex structures Stresses along the switches.Utilizes along the switchesUtilizes more input sources

Demo of inverters

Any questions please?

Sources Source: http://engineering.electrical-equipment.org/electricaldistribution/introduction-to-multilevel-inverter.htmlhttps://www.youtube.com/watch?v=jCNDRb8dda4https://www.google.com.pk/search?q=what+is+Voltage+inverter&biw=1024&bih=648&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjEzrz7o5XRAhWBbhoKHXFPDCMQ_AUIBigB#tbm=isch&q=dc+to+ac+inverter+block+diagramhttps://www.google.com.pk/search?q=importance+multilevel+inverter&biw=1024&bih=599&source=lnms&sa=X&ved=0ahUKEwjyj9KKn5bRAhWGPxoKHav_A5MQ_AUIBSgA&dpr=1#q=importance+of+multilevel+inverter+pdf