| 摘要 |
FIELD: electricity.SUBSTANCE: invention relates to power industry. Converting one type of current in the other (DC, AC), and thus binding AC network 1 and DC line 14, 15. Three-phase thyristor bridges 10, 11 operate in rectifier or inverter modes. Transformer of one unit has a shift relative to transformer of the other unit at an angle 30/n=15 electrical degrees. Therefore, 6n times harmonics of rectified voltage of one unit are in anti-phase to harmonics of the other unit and are mutually compensated or considerably weakened, because grounding 16 and extension line 17 have their own inductance. Simultaneously, current harmonics are reduced.EFFECT: reduction of noise and energy losses, increased reliability.1 cl, 2 dwg |
