COMPARATIVE ANALYSIS OF AMPLITUDE-MODULATION TYPE FREQUENCY CONVERTERS
Sakhmetova G.E. Uralov B.K. Shinibekova R.A. Sherov K.T. Sikhimbayev M.R.
2025National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2025#2025Issue 2277 - 289 pp.
Relevance. Currently, the problem of environmental pollution from traditional energy sources is particularly relevant. In gas turbine installations with an amplitude-modulating frequency converter, precise control of the power and speed of the GTI is performed, reducing the amount of fuel burned at incomplete loads and, most importantly, leads to a reduction in pollutant emissions. The additional load on the electrical components of a gas turbine installation due to current distortion has negative consequences affecting the efficiency, reliability and service life of the equipment. Despite the existing research and development work on AMPF, the task of recording the output current spectrum remains unresolved, which complicates the optimal design of the GTI. Thus, the issue of optimal design of the GTI using an amplitude-modulated frequency converter, which would ensure the least distortion and stable operation of the GTI, is relevant. Goal. The aim of the work is to develop scientifically based recommendations to stabilize the load on the electrical components of the GTI to reduce emissions, noise and thermal pollution. An amplitude-modulation frequency converter in the form of a modulation generator with a sinusoidally pulsating excitation current was chosen as the object of the study. Methods. The article proposes a method for determining the distortion of the load current of amplitude-modulating frequency converters with direct coupling to optimize the control system of the GTI. The paper provides a comparative analysis of an amplitude-modulating frequency converter and a frequency converter with direct coupling and artificial switching of thyristors to determine load current distortions. Results and conclusions. The analysis and calculation results show that the amplitude-modulation frequency converter ensures the least distortion and stable operation of the GTI and, as a result, a reduction in emissions of pollutants into the atmosphere. The methods and conclusions can be applied to solve actual practical problems in the design of geoecological, energy-efficient energy supply systems.
frequency converter , gas turbine installations , harmonics , load distortion , modulation generator
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South Kazakhstan University named after M. Auezov, Shymkent, Kazakhstan
Kazakh Agrotechnical Research University named after S. Seifullin, Astana, Kazakhstan
Karaganda University of Kazpotrebsoyuz, Karaganda, Kazakhstan
South Kazakhstan University named after M. Auezov
Kazakh Agrotechnical Research University named after S. Seifullin
Karaganda University of Kazpotrebsoyuz
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