MULTILEVEL POWER CONVERTER SUPPLYING SYNCHRONOUS AND ASYNCHRONOUS MOTORS FROM HIGH DC VOLTAGE SOURCE

摘要

FIELD: electricity.SUBSTANCE: multilevel power converter supplying synchronous and asynchronous motors from a high DC voltage source includes output inverter-recovery modules, each of them containing the first high-frequency bridge and the second bridge and a capacitor. DC current circuits of the first and second bridges are connected in parallel to the capacitor, AC current circuit of the second bridge is connected in series to AC current circuits of the second bridges of another output inverter-recovery modules so that wye-connected groups and the first and second high-frequency transformers and input inverter-recovery modules as well are formed, each of the latter containing a high-frequency bridge and a capacitor. The DC current circuits of the bridge are connected in parallel to the capacitor. The AC current circuits of the bridges in input inverter-recovery modules and the first bridges in output inverter-recovery modules are interconnected in parallel through the high-frequency transformers; the DC current circuits of the bridges in the input inverter-recovery modules are connected in series while outputs of the received circuit are connected to the high DC voltage source.EFFECT: invention allows the technical result that lies in the reduced weight and dimensions and increased efficiency factor of the converter at operation from the line of high direct voltage.1 dwg