Nonactive Current Components Compensation of Low-Voltage Power Supply Systems


Mykhaylo V. Zagirnyak, Mariia S. Maliakova, and Andrii P. Kalinov
Kremenchuk Mykhailo Ostrohradskyi National University, Kremenchuk, Ukraine

Series: Energy Science, Engineering and Technology
BISAC: TEC031020

The monograph has solved an actual scientific problem, improving the efficiency of electricity networks by developing methods of compensation current non-active components under harmonic distortions and unbalance of mains supply voltage. The research of the compensation system working processes in time- and frequency-domain allows to reach the positive effect for the developed method. The necessity of the analytical methods for analysis of nonlinear elements of electrical systems in the frequency-domain development have been grounded. The expediency and efficiency of the usage of small parameter method, which is realized in frequency-domain using instantaneous admittance components, have been grounded. It is shown that application of a small parameter method with its realization in frequency domain enables significant simplification of the process of the analysis of electric circuits with semiconductor converters in an analytical form and facilitation of calculation automation. Based on this, the algorithm for calculation of the passive filter parameters have been proposed. This allows to reach the desired voltage total harmonic distortion coefficient. The analysis of energy consumption and conversion in electrical systems with semiconductor converters based on the instantaneous power components analysis allowed to make important conclusions. Based on the analysis in analytical form in the frequency domain by numerical analysis and mathematical modeling of compensation, non-active components of current improvement methods were proposed as compensation non-active components under the non-sinusoidal and supply voltage unbalance and proved the effectiveness of its implementation. (Imprint: Nova)



Table of Contents


Abbreviations List

Main Symbols

Chapter 1. Analysis of the Problem of Compensation for Nonlinear Equipment Influence on Efficiency of the Operation of Electricity Supply System

Chapter 2. Theory of Research in Energy Processes in Electromechanical Systems with Nonlinear Elements

Chapter 3. Analytical Method for Determination of Harmonic Composition of Load Current for Calculation and Choice of Passive Filters

Chapter 4. Analysis of Electric Circuits with Semiconductor Transducers

Chapter 5. Analysis of Operation of the Compensation Systems in an Analytical Form in Electricity Supply Networks with a Nonlinear and Unbalanced Load

Chapter 6. Mathematical Modeling and Analysis of the Operation of Systems of the Compensation for Current Nonactive Components under Conditions of Harmonic Distortions and Unbalance of Supply Network Voltage




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