| 摘要 |
FIELD: electric engineering and force industrial electronics, namely - powerful high voltage frequency-adjusted electro-drives. ^ SUBSTANCE: in frequency-adjusted electric drive, containing force transformer with at least four three-phased secondary windings, group of rectifier-inverter frequency transformers and driving electric engine with 2P number of poles, connected serially, in accordance to invention, winding of driving electric engine is made of 2P identical coil groups, each one of which is connected to separate three-phased rectifier-inverter frequency transformer, each one of which in its turn is connected to appropriate secondary windings of force transformer with transformation coefficient, equal to 2P. ^ EFFECT: high reliability of proposed frequency-adjusted electric drive due to decreased working voltages of driving electric engine and decreased total number of rectifier-inverter frequency transformers. ^ 2 cl, 2 dwg |
