FIELD: electrical energy conversion. SUBSTANCE: multilevel converter has, among other things, capacitor and two switches provided. for example, in each of its components. These components function sequentially within time period repeated at rate of conversion. Filter circuit is connected in parallel with load to dissipate energy of any component whose fundamental frequency corresponds to converter period. Filter has one or more series resistance- inductance-capacitance circuits. EFFECT: improved stability. 5 cl, 7 dwg
