Prof. Ebrahim Babaei2026-05-072026-05-07https://dspace.academy.edu.ly/handle/123456789/1968A voltage source inverter is an inverter in which the source voltage (dc) amplitude is constant and it is not affected by the current of the load. Basically the output voltage is dependent on the characteristics of the inverter and the current value is dependent on the type of load. Voltage source inverters have wide areas of applications because the input is voltage source and it is suitable for many applications which require voltage source as the input. Variable or adjustable speed drives and FACTS devices are some major the major applications of voltage source inverters. Although VSI can be applied high power system, it is most suitable in medium power applications because they are able to generate output voltage with very high quality waveforms.The process of changing dc voltage/power to ac voltage/power is known as inversion; this process is realized by the use of principal device called an inverter. The first inverter is commonly known as the conventional 2-level inverter which is a voltage source inverter- VSI. The function of the conventional 2-level inverter is to utilize a fixed source voltage to provide changeable frequency/voltage at the inverter output for use by varied applications such as adjustable speed drive etc. inverters are classified into two groups from the input/source point of view and these categories are current source inverter CSI and voltage source inverter VSI.ANALYSIS AND PWM CONTROL