Anti-APOD polyclonal antibody

Modular structured multilevel inverter is very useful for electrical application especially in high voltage and high power applications. The main function of this multilevel inverter is to produce multilevel AC output voltage from several separate DC sources. This project is to derive a newmathematical formulation of multilevel voltage source inverter switching instants. The proposed method for this project is based on the sinusoidal natural sampling PWM (SPWM) by comparing several modified modulation signal with a triangular carrier signal. This resulting intersection points between this modulation and carrier signal become the switching instants of the PWM pulses. Derivation also based on Alternative Phase opposition disposition (APOD). A cascaded multilevel inverter is selected as a topology for this project due to major advantages compare with other topology. The derived formula is analyzed by using MATLAB simulation software. It is found that the results that use the derived formula are almost identical to simulation result.

Several control strategies have been proposed for diode clamped and flying capacitor multilevel inverters topologies which have their advantages. The observation for multicarrier modulation is quite similar for the above mentioned topologies, where as phase disposition technique has a superior line-to-line harmonic performance over alternative phase opposition disposition and phase opposition disposition techniques. Marx multilevel inverter derived from the Marx generator topology with the features of voltage balancing and boosting capability may find various applications in the field of renewable applications. This paper analyzes and propose the most suitable control strategy for the aforementioned topology. The detailed mathematical analysis and simulation results for various control algorithms for Marx inverter are presented in the paper.