US 2024/0405679 A1 · Supercapacitor-Based Automatic Energy-Saving System of Direct-Current High-Voltage Beam Pumping Unit

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 is combined with a direct-current contactor, a BUCK/BOOST power conversion circuit and an energy storage unit to form a series loop. The system further comprises a single-chip microcomputer system mainboard, which is in communication connection with the energy storage unit. A BUCK/BOOST pre-stage PWM processing circuit is connected to the single-chip microcomputer system mainboard and the BUCK/BOOST pre-stage PWM processing circuit includes a dead zone logic processing circuit, an optical coupling isolator, an IGBT power drive and protection circuit. After a supercapacitor module is used as an energy storage unit to recycle power generated by an electric motor, the system first uses the recycled power in the beam pumping unit when the electric motor is in a power consumption state once again, such that more energy is saved, and an external power grid is not affected.

Claims11

Dependent claims

1-10. (canceled)

A supercapacitor based automatic energy-saving system of a direct-current high-voltage beam pumping unit, characterized in that the system comprises a frequency converter connected to a three-phase power grid and a three-phase alternating-current contactor;

a direct-current bus of the frequency converter is combined with a direct-current contactor, a BUCK/BOOST power conversion circuit and an energy storage unit to form a series loop;
the system further comprises a single-chip microcomputer system mainboard connected to the direct-current contactor and the BUCK/BOOST power conversion circuit;
the single-chip microcomputer system mainboard is in communication connection with the energy storage unit;
a BUCK/BOOST pre-stage PWM processing circuit is connected between the single-chip microcomputer system mainboard and the BUCK/BOOST power conversion circuit;
the BUCK/BOOST pre-stage PWM processing circuit comprises a BUCK module PWM processing circuit and a BOOST module PWM processing circuit which are connected to the single-chip microcomputer system mainboard;
a dead zone logic processing circuit is connected between the BUCK module PWM processing circuit and the BOOST module PWM processing circuit;
and the BUCK module PWM processing circuit and the BOOST module PWM processing circuit are connected to the BUCK/BOOST control ends of the BUCK/BOOST power conversion circuit, respectively, after being connected to an optical coupling isolator and an IGBT power drive and protection circuit, respectively.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/439,209Filed 16 Mar 2020

Priority

CN 201910194430.414 Mar 2019

Published

5 Dec 2024

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

H02M 3/1582
Including plural semiconductor devices as final control devices for a single load: buck-boost converters
G06F 1/3234
Power management, i.e. event-based initiation of a power-saving mode: power saving characterised by the action undertaken
H02J 7/34
Circuit arrangements for charging or discharging batteries or for supplying loads from batteries: parallel operation in networks using both…
H02M 3/158
With automatic control of output voltage or current, e.g. switching regulators: including plural semiconductor devices as final control devices…

Supercapacitor-Based Automatic Energy-Saving System of Direct-Current High-Voltage Beam Pumping Unit

Life of this patent

Supercapacitor-Based Automatic Energy-Saving System of Direct-Current High-Voltage Beam Pumping Unit

Life of this patent

Abstract

Claims11