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In order to avoid the use of an additional circuit to balance the six capacitor voltages of the seven level NPC inverter, redundant states are exploited. The study is so complex because of the huge number of vectors. 720 cases are studied using the selective harmonics elimination PWM instead of space vector PWM. The proposed algorithm is validated in the case of inductive AC load.
In this paper, a comparative analysis of with and without injecting the harmonics in switching techniques for multilevel inverter was carried out. The multilevel inverter are said to be the power converter systems where the by controlling the power semiconductor sources properly a controlled multistep voltage waveform will generate. The first approach on multilevel inverter is carried out in Simulink...
The major concern in the design of inverters is dealing with harmonics. Harmonics in inverter are generated due to improper selection of switching angles to the gates of the inverter switches. The presence of harmonics in inverter output will affect the loads connected to it. This paper deals with the selective harmonic elimination problem in multilevel inverter using Artificial Neural Networks (ANN)...
The Optimized Harmonic Stepped Waveform (OHSW) technique is an effective method for reduction of multi-level inverter's harmonics. This technique is very efficient for improving the quality of multi-level inverter output voltage. It is usually assumed that cascaded multi-level inverters have equal DC sources. In practice, however, this will not be happened even if the DC sources are nominally equal...
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