Apparatus and methods for electric power management

1 . A system comprising:

a pressure control equipment;

a hydraulic power unit comprising:

a fluid reservoir; and

at least one pump comprising an electric motor configured to power the pump;

a programmable logic controller (PLC) in electric communication with the hydraulic power unit; and

a power management system connected to the PLC, wherein the power management system comprises:

a capacitor management system connected to a supercapacitor; and

a stored electrical energy system,

wherein the at least one pump of the hydraulic power unit is in direct fluidic communication with the pressure control equipment,

wherein the PLC is configured to evaluate a power need of the hydraulic power unit,

wherein the PLC is configured to send instructions to discharge the supercapacitor if the power need of the hydraulic power unit aligns with a first operational status of the hydraulic power unit,

wherein the PLC is configured to send instructions to use the stored electrical energy system if the power need of the hydraulic power unit aligns with a second operational status of the hydraulic power unit, and

wherein the first operational status requires a higher power demand than the second operational status.

2 . The system of claim 1 , wherein the pressure control equipment comprises a blowout preventer stack.

3 . The system of claim 1 , wherein the stored electrical energy system comprises a battery management system connected to a battery pack.

4 . The system of claim 1 , wherein the stored electrical energy system comprises a hydrogen fuel cell.

5 . The system of claim 1 , wherein the power management system is connected to the PLC via a bi-directional converter of the power management system, wherein the bi-directional converter is electrically connected to the supercapacitor.

6 . The system of claim 5 , wherein the bi-directional converter is electrically connected to the stored electrical energy system.

7 . The system of claim 1 , wherein the first operational status of the hydraulic power unit is start-up of the electric motor.

8 . The system of claim 7 , wherein the second operational status of the hydraulic power unit is normal operation of the hydraulic power unit after start-up of the electric motor.

9 . The system of claim 1 , wherein the first operational status of the hydraulic power unit is an emergency mode.

10 . The system of claim 9 , wherein the second operational status of the hydraulic power unit is normal operation of the hydraulic power unit in a non-emergency mode.

11 . The system of claim 1 , further comprising:

at least one of a solid-state starter or a variable frequency drive that is configured to control inrush current to the electric motor.

12 . The system of claim 1 , further comprising:

at least one human machine interface connected to the capacitor management system, wherein the at least one human machine interface is in electric communication with the PLC.

13 . The system of claim 1 , further comprising:

at least one human machine interface connected to the capacitor management system and the stored electrical energy system, wherein the at least one human machine interface is in electric communication with the PLC.

14 . The system of claim 1 ,

wherein the pressure control equipment comprises at least one sensor that monitors at least one condition,

wherein the PLC is configured to process feedback received from the at least one sensor, and

wherein the PLC is configured to evaluate the power need of the hydraulic power unit based on the feedback.

15 . The system of claim 14 , wherein the at least one condition is at least one wellbore condition.