FIELD: electricity.
SUBSTANCE: direct three-phase frequency converter with natural commutation includes loading pattern, output filter and control system, differs by the fact that converter includes three-phase loading pattern, voltage transformer, current transformer unit, measuring device of voltage deviation, master generator, cosine synchronisation unit and three control signal shaping units; at that, inputs of loading pattern of converter, which contains thyristor switches, are connected to source of three-phase high-frequency voltage, and its outputs are connected through output filter, current transformer unit and voltage transformer to output terminals of converter.
EFFECT: frequency stabilisation in non-symmetrical operating modes.
2 dwg
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