Comparative performance analysis of network independent sinusoidal pulse width and space vector pulse width modulation

Alternating current is widely used in many systems and industrial applications. It is therefore desirable to convert the direct current input voltage to a symmetrical alternating current output voltage at the desired amplitude and frequency. The circuits that perform this transformation are called inverters. Due to the increase of switching losses in high powerapplications of inverters, circuit structures called multi-level inverters have emerged. Multilevel inverter circuits, low output voltage is less degraded, low switching frequency and high-efficiency emerges. In addition to these developments occurring in inverter circuit structures, many studies have been done regarding the control of voltage and frequency at the inverter output. As a result of these studies, various pulse width modulation techniques have been developed. Sinusoidal Pulse Width Modulation technique and Space Vector Pulse Width Modulation technique are among the most commonly used techniques in these techniques. In this thesis, firstly general information about inverters and multi-level inverters is given. Then, general information about pulse width modulation techniques is given and the Space Vector Pulse Width Modulation technique is explained in detail with Sinusoidal Pulse Width Modulation technique. Finally, two-level sinusoidal pulse width independent of the network and three-level Space Vector Pulse Width Modulation methods on an inverter circuit with R and R-L are applied to simulate the advantages and disadvantages of pulse width modulation methods. Key Words: Inverters, Multi-Level Inverters, Harmonics, Sinusoidal Pulse Width Modulation, Space Vector Pulse Width Modulation