| 摘要 |
An AC drive/drives system is meant for application in electric power industry, specifically in middle or low-voltage voltage AC electric drive. The drive provides survivability of drive mechanisms if one of supply mains linear phases breaks and other failures of phase voltages. The said survivability is obtained by creation of a rigid between-phase electromagnetic connection between phases of the supply mains, which is implemented using a zero-sequence current filter, as well as introduction of a zero phase of the distributing mains. The utility: parametric generation of a voltage close to nominal voltage in a dead phase of the AC drive/drives system, which occurs momentary and without current and voltages transient processes. Increase of electric voltages quality in the event of non-symmetric mode of power supply; zero sequence high harmonics muting; high-voltage pulses muting; decrease of high-voltage pulses oscillations; protection of drive system against constant component of current in the AC drive/drives system, protection of the AC drive/drives system against electromagnetic emission. |
