FIELD: electrical engineering.
SUBSTANCE: invention relates to the field of electric engineering and can be used in the electric power distribution and conversion system as the wells well pumps controlled electric drive, including submersible electric centrifugal pumps arranged on one cluster and intended for lifting from formation to surface of well fluid containing oil, as well as for extraction of water from water-bearing formations and for pumping water into productive oil formations in order to maintain formation pressure, can also be used as controlled electric drive of drilling rig mechanisms and for other mechanisms. As electric motors there can be used asynchronous motors, synchronous motors, valve motors and DC motors. Energy-efficient and reliable electrical complex consists of input transformer (3) with triangle-connected primary winding (4) and splitted secondary winding (5, 6) receiving electric power from three-phase AC voltage source (1) via power transmission line (2), outputs of secondary windings of input transformer (5, 6) are connected to inputs of two semiconductor rectifiers (7, 7'), assembled according to Larionov scheme, to outputs of which there connected is direct current distributor (8) consisting of positive potential bus (9), bus of negative potential (9"), bus of zero potential (9'), to buses of direct current is connected at least one independent voltage inverter (11) with individual capacitor (10), supplying alternating voltage to consumer (12) connected to it, automatic control system (13) consisting of direct current (16) and voltage (17) sensors, alternating current (18) sensors and voltage (19), controller (14) and semiconductor device drivers (15) measures voltage and current at inverter input and output and controls period and pulse duration of voltage pulses generated by autonomous voltage inverter.
EFFECT: technical result is providing electromagnetic compatibility of power supply system with frequency-controlled electric drive.
13 cl, 8 dwg
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|---|---|---|---|
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