FREQUENCY MULTIPLIER OF THE THREE-PHASE NETWORK Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: frequency multiplier has single-phase bridge rectifiers. Their inputs are connected to the feeding three-phase network with a neutral terminal, their outputs are connected to the corresponding winding of the primary circuit of the integrating node through the corresponding regulated valves. One part of the rectifiers is turned on the line voltage of the feeding network, the other part to the phase voltage. The primary windings of the interacting node are connected in pairs in series into the corresponding branches. The common points of connecting the windings of the stated branches are switched on to the common bus of the bridge rectifiers. The device is used for the current transformation. EFFECT: increased velocity range of electric machines with the reservation of high efficiency and raised power at the same dimensions. 1 dwg