METHOD FOR SWITCHING PHASE RECTIFIER WITH insulated-gate bipolar transistor (IGBT) With reverse conduction

摘要

An automatic transmission with a hydraulic control device (2) and with a plurality of hydraulically actuatable gear units (3, 4, 31, 61), wherein the transmission as a twin-clutch transmission, which is constructed as a hydraulically actuatable gear units (3, 4, 31, 61) a first clutch (3) for the coupling and uncoupling of a first partial transmission with or of a drive, a second clutch (4) for the coupling and uncoupling of a second partial transmission from the drive, and a switching system (31, 61) for shifting of gears of both partial transmissions, wherein the hydraulic control device (2) a control unit (5) for setting the operating pressures (17, 18, 32, 63) on the gear units, as a rule, and a base pressure valve (8) for setting a hydraulic base (16) of the hydraulic control device (2) and wherein the hydraulic control device (2) a hydraulic device (9) for an actuating pressure control as a rule, which is dependent on the basis of pressure valve (8), characterised in that the means (23) to the hydraulic switching through of an activation pressure (17, 18, 32, 63) to the base generally pressure valve (8) are provided, with the base pressure by means of the hydraulic control device (2) at least temporarily actuating pressure on a smaller shift, and wherein the actuating pressure (17, 18, 32, 63) directly on the basis of pressure acts as a rule, valve.