Title:
VARIABLE-FREQUENCY DRIVE SYSTEM, FREQUENCY CONVERSION AND SPEED REGULATION ALL-IN-ONE MACHINE, PUMPING SYSTEM AND WELL SITE ARRANGEMENT
Document Type and Number:
WIPO Patent Application WO/2023/221386
Kind Code:
A1
Abstract:
The present invention aims to reduce the requirement of a variable-frequency drive system for the withstand voltage of a single power unit, and also aims to avoid the shutdown of the variable-frequency drive system caused by the damage of individual power units in the variable-frequency drive system. A variable-frequency drive system in one embodiment of the present invention comprises: a motor; and a plurality of power units connected in series for subjecting electric power from a power supply facility to voltage regulation and/or frequency conversion and then supplying same to the motor, so as to drive the motor to operate to generate power. A frequency conversion and speed regulation all-in-one machine in one embodiment of the present invention comprises the variable-frequency drive system. A pumping system in one embodiment of the present invention comprises the variable-frequency drive system or the frequency conversion and speed regulation all-in-one machine. A well site arrangement in one embodiment of the present invention comprises the pumping system.
Inventors:
LI SHOUZHE (CN)
ZHONG JIFENG (CN)
LV LIANG (CN)
LI XINCHENG (CN)
ZHONG JIFENG (CN)
LV LIANG (CN)
LI XINCHENG (CN)
Application Number:
PCT/CN2022/125638
Publication Date:
November 23, 2023
Filing Date:
October 17, 2022
Export Citation:
Assignee:
YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD (CN)
International Classes:
H02P27/08; H02J3/00; H02K7/18; H02M5/458; H02M7/797; H02P25/18
Foreign References:
| CN114977970A | 2022-08-30 | |||
| CN106712648A | 2017-05-24 | |||
| CN103795323A | 2014-05-14 | |||
| CN205193194U | 2016-04-27 | |||
| CN104953806A | 2015-09-30 | |||
| CN2899282Y | 2007-05-09 | |||
| US20170244325A1 | 2017-08-24 |
Attorney, Agent or Firm:
BEIJING SUNHOPE INTELLECTUAL PROPERTY LTD. (CN)
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