scholarly journals Efficient Transient Simulation of Single-Phase Grid-Feeding Converter System Using Frequency Response Optimized Integrators Considering Second Order Derivative

2021 ◽  
Author(s):  
Sheng Lei ◽  
Alexander Flueck
Keyword(s):  
Smart Grid ◽  
Frequency Response ◽  
Computational Efficiency ◽  
Single Phase ◽  
Second Order ◽  
Transient Simulation ◽  
Order Derivative ◽  
The Novel ◽  
Numerical Integrators ◽  
Simulation Scheme

<p>A novel power system transient simulation scheme based on frequency response optimized integrators considering second order derivative is applied to a single-phase grid-feeding converter system in this paper. The converter system under study is introduced in detail as well as how the different numerical integrators are utilized for each constituting component. Numerical case studies show that the novel transient simulation scheme is able to achieve computational efficiency without sacrificing accuracy.</p><p><br></p><p></p><p>This paper has been accepted by the 2021 IEEE PES Innovative Smart Grid Technologies Conference.</p><p></p>

scholarly journals Efficient Transient Simulation of Single-Phase Grid-Feeding Converter System Using Frequency Response Optimized Integrators Considering Second Order Derivative

2021 ◽  
Author(s):  
Sheng Lei ◽  
Alexander Flueck
Keyword(s):  
Smart Grid ◽  
Frequency Response ◽  
Computational Efficiency ◽  
Single Phase ◽  
Second Order ◽  
Transient Simulation ◽  
Order Derivative ◽  
The Novel ◽  
Numerical Integrators ◽  
Simulation Scheme

<p>A novel power system transient simulation scheme based on frequency response optimized integrators considering second order derivative is applied to a single-phase grid-feeding converter system in this paper. The converter system under study is introduced in detail as well as how the different numerical integrators are utilized for each constituting component. Numerical case studies show that the novel transient simulation scheme is able to achieve computational efficiency without sacrificing accuracy.</p><p><br></p><p></p><p>This paper has been accepted by the 2021 IEEE PES Innovative Smart Grid Technologies Conference.</p><p></p>

scholarly journals Plasma parameter profile inference from limited data utilizing second-order derivative priors and physic-based constraints

2021 ◽  
Vol 28 (3) ◽  
pp. 032504
Author(s):  
T. Nishizawa ◽  
M. Cavedon ◽  
R. Dux ◽  
F. Reimold ◽  
U. von Toussaint ◽  
...  
Keyword(s):  
Plasma Parameter ◽  
Second Order ◽  
Order Derivative ◽  
Limited Data ◽  
Parameter Profile

scholarly journals Estimation of Tadalafil Using Derivative Spectrophotometry in Bulk Material and in Pharmaceutical Formulation

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Zamir G. Khan ◽  
Amod S. Patil ◽  
Atul A. Shirkhedkar
Keyword(s):  
Wavelength Range ◽  
Area Under Curve ◽  
Pharmaceutical Formulation ◽  
Second Order ◽  
Order Derivative ◽  
Uv Spectrophotometry ◽  
First Order ◽  
Beer's Law ◽  
Beer’S Law ◽  
Derivative Uv Spectrophotometry

Four simple, rapid, accurate, precise, reliable, and economical UV-spectrophotometric methods have been proposed for the determination of tadalafil in bulk and in pharmaceutical formulation. “Method A” is first order derivative UV spectrophotometry using amplitude, “method B” is first order derivative UV spectrophotometry using area under curve technique, “method C” is second order derivative UV spectrophotometry using amplitude, and “method D” is second order derivative UV spectrophotometry using area under curve technique. The developed methods have shown best results in terms of linearity, accuracy, precision, and LOD and LOQ for bulk drug and marketed formulation as well. In N,N-dimethylformamide, tadalafil showed maximum absorbance at 284 nm. For “method A” amplitude was recorded at 297 nm while for “method B” area under curve was integrated in the wavelength range of 290.60–304.40 nm. For “method C” amplitude was measured at 284 nm while for “method D” area under curve was selected in the wavelength range of 280.80–286.20 nm. For methods A and B, tadalafil obeyed Lambert-Beer’s law in the range of 05–50 μg/mL while for “methods C and D”, tadalafil obeyed Lambert-Beer’s law in the range of 20–70 μg/mL, and-for “methods A, B, C, and D” the correlation coefficients were found to be > than 0.999.

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