On the improved computational speed and convergence of the Newton Raphson iteration method for selective harmonics elimination PWM applied to cascaded multilevel inverter with equal and non‐equal DC sources

2013 ◽  
Vol 32 (3) ◽  
pp. 901-922 ◽  
Author(s):  
Zainal Salam ◽  
Seh Soon Yee ◽  
Yasir Saleem
Keyword(s):  
Iteration Method ◽  
Multilevel Inverter ◽  
Computational Speed ◽  
Newton Raphson ◽  
Cascaded Multilevel Inverter ◽  
Raphson Iteration

scholarly journals Calculation of Flight Data Fusion Coefficients Using Newton–Raphson Iterations

2020 ◽  
pp. 100-103
Author(s):  
Elkhan Nariman Sabziev
Keyword(s):  
Differential Equations ◽  
Data Fusion ◽  
Boundary Value Problem ◽  
Iteration Method ◽  
Measurement Errors ◽  
Continuous Model ◽  
System Of Differential Equations ◽  
Flight Data ◽  
Newton Raphson ◽  
Raphson Iteration

The problem of plotting the flight path of an aircraft based on flight data containing numerous measurement errors is investigated. A theoretical (continuous) model of the flight data fusion problem is proposed in the form of a boundary value problem for a system of differential equations with unknown coefficients. The application of the Newton–Raphson iteration method for calculating the sought-for coefficients is described.

scholarly journals Modeling and Parameter Extraction of PV Cell Using Single- and Two-Diode Model

2017 ◽  
Vol 2 (2) ◽  
pp. 06
Author(s):  
Bouchra Benabdelkrim ◽  
Ali Benatillah
Keyword(s):  
Iteration Method ◽  
Accurate Determination ◽  
Parameter Extraction ◽  
Solar Pv ◽  
Mathematical Methods ◽  
Pv System ◽  
Accurate Performance ◽  
Newton Raphson ◽  
Using Data ◽  
Raphson Iteration

Photovoltaic modules operate under a large range of conditions. This combined with the fact that manufacturers provide electrical parameters at specific conditions (STC). The present study proposes a comparison between single and double diode models of solar PV system and ensures the best suited model under specific environmental condition for accurate performance prediction. An important feature of these models is that its parameters can be determined using data commonly provided by module manufacturers on their published datasheets. Accurate determination of these parameters which arose from a diversification of models and methods dedicated to their estimations is still a challenge for researchers. In this paper the single and two diode models have been studied by mathematical methods based on simulated Newton-Raphson iteration method. Newton-Raphson iteration method is solved by MATLAB simulation. 

scholarly journals Switching Angles Optimization of Cascaded Multilevel Inverter with Newton-Raphson Methhod

2018 ◽  
Author(s):  
Asnil ◽  
krismadinata ◽  
Irma Husnaini ◽  
Syahril
Keyword(s):  
Single Phase ◽  
Higher Order ◽  
Multilevel Inverter ◽  
Output Waveform ◽  
Harmonic Elimination ◽  
Newton Raphson ◽  
Cascaded Multilevel Inverter ◽  
Raphson Method

This paper recounts an approach to optrmize the switching angles or single-phase live-level cascaded H-bridgc multilevel inverter. Optimized Harmonic Elimination Stepped Waveform (OHESW) technique was engaged to enhance the output waveform quality. Newtcn-Raphson method is employed to determine the switching angles for the inverter which eliminates specified higher order harmonics while maintaining the required fundamental voltage. Computation resulting from the optimized switching angle was simulated Its results indicated the proposed method's effectiveness

scholarly journals Unconditional Applicability of Lehmer’s Measure to the Two-Term Machin-like Formula for π

2021 ◽  
Vol 23 ◽  
Author(s):  
Sanjar Abrarov ◽  
Rehan Siddiqui ◽  
Rajinder Jagpal ◽  
Brendan Quine
Keyword(s):  
Computational Efficiency ◽  
Iteration Method ◽  
Irrational Numbers ◽  
Tangent Function ◽  
Newton Raphson ◽  
The Given ◽  
Raphson Iteration

Lehmer defined a measure depending on numbers beta_i used in a Machin-like formula for pi. When the beta_i are integers, Lehmer's measure can be used to determine the computational efficiency of the given Machin-like formula for pi. However, because the computations are complicated, it is unclear if Lehmer's measure applies when one or more of the beta_i are rational. In this article, we develop a new algorithm for a two-term Machin-like formula for pi as an example of the unconditional applicability of Lehmer's measure. This approach does not involve any irrational numbers and may allow calculating pi rapidly by the Newton-Raphson iteration method for the tangent function.

DESIGN OF 63 LEVEL OPTIMAL NOVEL CASCADED MULTILEVEL INVERTER WITH REDUCED NUMBER OF SWITCHES AND THD

2017 ◽  
Vol 5 (4) ◽  
pp. 20
Author(s):  
MADHUSUDANA REDDY BOLLA ◽  
REDDY Y.V. SIVA ◽  
KUMAR M. VIJAYA ◽  
◽  
◽  
...  
Keyword(s):  
Multilevel Inverter ◽  
Cascaded Multilevel Inverter

Symmetrical Five Level Cascaded Multilevel Inverter With Reduced Switch for Various Unipolar PWM Strategies

2014 ◽  
Vol 8 (2) ◽  
pp. 32-37
Author(s):  
C. R. Balamurugan ◽  
◽  
S. P. Natarajan ◽  
M. Arumugam ◽  
R. Bensraj ◽  
...  
Keyword(s):  
Multilevel Inverter ◽  
Cascaded Multilevel Inverter
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