FIELD: drives of submersible pumps for oil production. SUBSTANCE: unit includes converter consisting of rectifier mounted on ground and provided with control system and inverter with control system for supply of electric motor of submersible pump. Pump, motor and inverter are arranged in well. One power lead of inverter is connected with respective power lead of converter by means of core of single-core cable. Second leads of rectifier and inverter are connected to ground and/or to casing string of well and metal braiding of cable. Unit is provided with sensor showing position of motor rotor. Rectifier and inverter are provided with programmed control. Control system of inverter is connected with rotor position sensor and with inverter output by means of respective inputs. Input of programmer of inverter is connected with inverter input and output is connected with third inputs of inverter control system. Programmer of rectifier sets angle of delay more than 90 deg at start. EFFECT: reduced mass and overall dimensions of unit; reduced usage of materials. 3 dwg
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