METHOD AND DEVICE FOR SUBMERGED PUMP ELECTRIC MOTOR SUPPLY Russian patent published in 2019 - IPC H02J3/34 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering for power supply and control of asynchronous electric motors of submersible pumps for lifting liquids from deep wells and can be used in water supply systems and oil industry. Objective of the proposed invention is to increase efficiency of using the resonant method of electric power supply to the electric motor of the submersible pump by high-voltage single-core supply cable, reduced weight of power supply cable, consumption of non-ferrous metal and metal consumption of the whole electrical installation, reduction of power losses in current-conducting cable, reduction of operating costs, improving operational reliability of operation of submersible pumping unit electrical equipment system. Proposed electric power supply circuit of electric motor allows to generate electric energy from low-voltage electric circuit of power supply source at occurrence of high-frequency resonance oscillations of 0.5–100 kHz at voltage of 1–10 kV through high-voltage single-core supply cable for receiving and conversion of voltage in low-voltage electric circuit for power supply of submersible pump motor.

EFFECT: possibility to implement resonant method of electric power supply to electric motor of submersible pump on high-voltage single-core supply cable, reduced many times its mass, consumption of nonferrous metal and energy loss, increased efficiency of use, operational reliability and electrical safety of operation of electrical equipment of submersible pumping unit.

2 cl, 1 dwg