US 12,345,133 B2
High efficiency power system for electric submersible pumps
George Knost, Baton Rouge, LA (US); and Michael Gallagher, Clemson, SC (US)
Appl. No. 18/281,719
Filed by George Knost, Baton Rouge, LA (US); and Michael Gallagher, Clemson, SC (US)
PCT Filed Mar. 10, 2022, PCT No. PCT/US2022/019712
§ 371(c)(1), (2) Date Sep. 12, 2023,
PCT Pub. No. WO2022/192516, PCT Pub. Date Sep. 15, 2022.
Claims priority of provisional application 63/160,026, filed on Mar. 12, 2021.
Prior Publication US 2024/0309735 A1, Sep. 19, 2024
Int. Cl. H02M 7/06 (2006.01); E21B 41/00 (2006.01); E21B 43/12 (2006.01); H02P 27/06 (2006.01)
CPC E21B 41/0085 (2013.01) [E21B 43/128 (2013.01); H02P 27/06 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A system for supplying power to an electric submersible pump, said system comprising:
a. a variable frequency drive electrically connected to a motor;
b. said electric submersible pump mechanically connected said motor;
c. a generator electrically connected to said variable frequency drive;
d. a battery electrically connected to said variable frequency drive, said battery being sized to power said variable frequency drive during startup operations of said electric submersible pump and during generator maintenance periods;
e. a means for detecting when power from said generator is insufficient to meet the load demand of said electric submersible pump, and then sending power from said battery to said variable frequency drive to meet said load demand of said electric submersible pump; and
f. a means for charging said battery using said generator when said battery has dropped below a threshold level.