US 12,395,110 B2
Multi-winding-motor driving system, variable-frequency electric driving system, pumping system, fracturing device and wellsite equipment
Shouzhe Li, Yantai (CN); Jifeng Zhong, Yantai (CN); and Yuanjie Xie, Yantai (CN)
Assigned to YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD., Yantai (CN)
Filed by YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD., Yantai (CN)
Filed on May 11, 2023, as Appl. No. 18/315,888.
Application 18/315,888 is a continuation of application No. PCT/CN2022/101882, filed on Jun. 28, 2022.
Claims priority of application No. 202210053618.9 (CN), filed on Jan. 18, 2022.
Prior Publication US 2023/0283215 A1, Sep. 7, 2023
Int. Cl. E21B 43/26 (2006.01); E21B 33/13 (2006.01); F04B 17/03 (2006.01); F04B 49/00 (2006.01); G08B 21/18 (2006.01); H02P 25/22 (2006.01)
CPC H02P 25/22 (2013.01) [E21B 43/2607 (2020.05); F04B 17/03 (2013.01); E21B 33/13 (2013.01); F04B 49/00 (2013.01); G08B 21/187 (2013.01)] 19 Claims
OG exemplary drawing
 
5. A pumping system, comprising:
a multi-winding-motor driving system, wherein the multi-winding-motor driving system comprises:
a motor having multi-branch windings independent from each other; and
a power unit including a rectifier unit and a plurality of inverter units, wherein the inverter units correspond to the multi-branch windings of the motor one to one, and each of the inverter units supplies power to a corresponding one branch of the multi-branch windings of the motor;
a power distribution unit; and
at least one plunger pump, wherein the plunger pump is integrally installed with the multi-winding-motor driving system, and the plunger pump is driven by the motor,
wherein a transmission output shaft of the motor is directly mechanically connected to a transmission input shaft of the plunger pump, or
wherein the transmission output shaft of the motor is indirectly mechanically connected to the transmission input shaft of the plunger pump through a clutch or a coupler.