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Title:
SUPERCAPACITOR-BASED AUTOMATIC ENERGY-SAVING SYSTEM OF DIRECT-CURRENT HIGH-VOLTAGE BEAM PUMPING UNIT
Document Type and Number:
WIPO Patent Application WO/2020/182220
Kind Code:
A1
Abstract:
Disclosed is a supercapacitor-based automatic energy-saving system of a direct-current high-voltage beam pumping unit. The system comprises a frequency converter, wherein a direct-current bus of the frequency converter, a direct-current contactor, a BUCK/BOOST power conversion circuit and an energy storage unit are combined to form a series loop; and the system further comprises a single-chip microcomputer system mainboard, which is in communication connection with the energy storage unit, wherein the single-chip microcomputer system mainboard is connected to a BUCK/BOOST pre-stage PWM processing circuit, and the BUCK/BOOST pre-stage PWM processing circuit includes a dead zone logic processing circuit, an optical coupling isolator and an IGBT power drive and protection circuit. After a supercapacitor module is used as an energy storage unit to recycle the power generation electric quantity of an electric motor, when the electric motor is in a power consumption state once again, the system preferentially uses recycled electric energy for the interior of a beam pumping unit, such that more energy is saved, and an external power grid is not affected.

Inventors:
ZHAO BO (CN)
Application Number:
CN2020/079543
Publication Date:
September 17, 2020
Filing Date:
March 16, 2020
Export Citation:
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Assignee:
AVX NEW ENERGY CHENGDU CO LTD (CN)
International Classes:
H02J7/34; H02M3/156; H02P27/08
Foreign References:
CN109950963A2019-06-28
CN105119311A2015-12-02
CN107453449A2017-12-08
CN107591864A2018-01-16
JP2001086661A2001-03-30
Attorney, Agent or Firm:
KING & WOOD MALLESONS (CN)
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