%0 Conference Article %T COMPARATIVE ANALYSIS OF AUTOMATIC AC REGULATION SYSTEMS IN MOBILE ELECTRICAL UNIT APA–5D AND APA–100 %A Penkov, N.A. %A Prokofiev, M.A. %K mobile power units, automatic control system, magnetic amplifiers, pulse–width modulation %J MODERN SYSTEMS AND TECHNOLOGIES IN TRANSPORT: PROBLEMS AND PROSPECTS - 2025 %D 2025 %P 3 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov