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A multilevel Power converter structure is based on the concept of High power and medium voltage situations. Its concept is to use a series of power and medium voltage situations. Its concept is to use a series of power semiconductor switches with several layer voltage dc sources to perform the power conversion by synthesizing a staircase voltage waveform. Multilevel converter operates both in inverter...
The important features of modular multilevel inverters(MMLIs) are lower power dissipations in the switches, low harmonic contents, modularity and outputs with lower electromagnetic interference (EMI). The MMLI discussed is based on the half-bridge topology. A comparative study of two level VSI and 3, 5 level MMLI is discussed in the context of their total harmonic distortion in simulink models.
Multidimensional scaling is a technique for exploratory analysis of multidimensional data, whose essential part is optimization of a function possessing many adverse properties including multi objectivities, multimodality, and non differentiability etc.,. In this paper, global optimization algorithms for multi Objective problems are chosen for different kind of problems especially in the power Industry...
A two step gate dielectric deposition technique on GaN, viz. thermal oxidation of Low Pressure Chemical Vapor Deposited (LPCVD) silicon is reported. Current-Voltage (I-V) and Capacitance-Voltage (C-V) characterization of the Metal Insulator Semiconductor (MIS) capacitors are carried out to assess the interface properties. MIS devices with thermal oxide show improved I-V characteristics compared to...
Rapid development of high power semiconductor devices with fast control features have given birth to several Flexible AC Transmission Systems (FACTS) controllers for improving power system performances. One of the advanced FACTS Controllers is Unified Power Flow Controller (UPFC), which can control power flows, both real and reactive in Transmission line. This paper presents performance analysis of...
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