DEVICE FOR CONNECTING INDEPENDENT VOLTAGE INVERTER TO DIRECT CURRENT VOLTAGE SOURCE (VERSIONS)

摘要

FIELD: electricity. ^ SUBSTANCE: invention refers to electric engineering. Device (1) for connecting independent voltage inverter (2) to direct current voltage source (3) includes the main elements: reactor (4), inlet capacitor (5) of inverter, control unit (6) of charge of inlet capacitor of inverter, circuit (16) for limiting excess voltages in the form of damping circuit containing first (17) and second (18) resistors and damping capacitor (19). Switch (20) is connected in parallel to first resistor (17) into circuit (16). Circuit (16) can be used of one or several unipolar voltage limiters. ^ EFFECT: decreasing the following parametres and values of charging process of inlet capacitor by several times: inductivity of reactor and its weight; deviations of maximum values of charging current from average; deviations of maximum voltage values on outlet capacitor and other elements of independent inverter from direct current voltage source; energy losses in reactor and line connecting input terminals of independent voltage inverter to DC voltage source. ^ 3 cl, 3 dwg