Construction of multi-level inverters for an autonomous power supply system for responsible electric receivers of mining industry enterprises

The paper addresses the issues of creating an autonomous power supply system for mining enterprises remote from the central electric power system. The proposed system should contain high-capacity electric energy storage devices and multilevel inverters built on the basis of semiconductor switches and multi-winding power transformers operating at a frequency of 50 Hz industrial network. The possibility of obtaining AC voltages close to a sinusoidal shape using amplitude modulation of currents and magnetic fluxes in branched electric and magnetic circuits without using the pulse-width modulation generally accepted for conventional inverters is investigated, taking into account its negative impact. The evaluation of the efficiency of the obtained inverters is carried out both analytically based on the calculation of the harmonic coefficients, and by conducting model experiments.

Myatezh S. V., Lisitsyn P. S. Construction of multi-level inverters for an autonomous power supply system for responsible electric receivers of mining industry enterprises. MIAB. Mining Inf. Anal. Bull. 2023;(10-1):110—126. [In Russ]. DOI: 10.25018/0236_1493_2023_101_0_110.

Myatezh S. V., Cand. Sci. (Eng.), Associate Professor of the Department of Electrical Engineering Complexes, Novosibirsk State Technical University (NSTU-NETI);
Lisitsyn P. S., assistant of the department of “Electrotechnical complexes” of the Novosibirsk State Technical University (NSTU-NETI), master.

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