Energy transfer and storage apparatus for delivery of pulsed power

Patent metadata

Field	Value
Publication number	US-9373963-B2
Application number	US-201313902621-A
Country	US
Kind code	B2
Filing date	May 24, 2013
Priority date	May 24, 2013
Publication date	Jun 21, 2016
Grant date	Jun 21, 2016

Abstract

A method and system supply pulsed power. The system includes an inertial energy storage device configured to store inertial energy and an electrochemical energy storage system configured to store electrochemical energy. The system includes a bidirectional energy transfer system. The energy transfer system is configured to receive energy from an energy source. The energy transfer system is configured to transfer at least a portion of the received source energy to the inertial energy storage device. The energy transfer system is configured to transfer at least a portion of the received energy in the inertial energy storage device to the electrochemical energy storage system while controlling a rate at which energy is transferred to the electrochemical energy storage system based on a prescribed charging rate associated with the electrochemical energy storage system. Additionally, the energy transfer system is configured to supply power to one or more loads using the stored energy.

First claim

What is claimed is:

1. A pulse power supply system comprising:
an inertial energy storage device configured to store inertial energy;
an electrochemical energy storage system configured to store electrochemical energy; and
a bidirectional energy transfer system configured to:
receive energy from one or more input power sources;
transfer at least a portion of the received energy to the inertial energy storage device;
transfer at least a portion of the received energy in the inertial energy storage device to the electrochemical energy storage system while controlling a rate at which energy is transferred to the electrochemical energy storage system based on a prescribed charging rate associated with the electrochemical energy storage system; and
supply pulses of power to one or more loads using the stored energy.

2. The pulse power supply system of claim 1 , wherein the bidirectional energy transfer system comprises a synchronous modulator bidirectional electrical machine.

3. The pulse power supply system of claim 2 , wherein the synchronous modulator bidirectional electrical machine comprises a tertiary stator winding for machine excitation and voltage control having an input from a polyphase pulsed excitation system.

4. The pulse power supply system of claim 1 , wherein the bidirectional energy transfer system is configured to directly transfer energy from an energy source to the electrochemical energy storage system.

5. The pulse power supply system of claim 1 , wherein the bidirectional energy transfer system is configured to transfer energy that is unused by the one or more loads to the inertial energy storage device and, after a time delay, transfer a portion of the energy from the inertial energy storage device to the electrochemical energy storage system.

6. The pulse power supply system of claim 1 , wherein the bidirectional energy transfer system comprises a pulse forming network configured to supply the pulses of power to the one or more loads with multiple time constraints using the stored energy.

7. The pulse power supply system of claim 1 , wherein the bidirectional energy transfer system comprises multiple power outputs, the bidirectional energy transfer system configured to supply pulses of steady-state power to a first load and supply transient power to a second load having a different electrical characteristic impedance or different time constraint.

8. The pulse power supply system of claim 1 , wherein the electrochemical energy storage system comprises an electrostatic capacitor array configured to store the electrochemical energy.

9. The pulse power supply system of claim 8 , wherein the electrostatic capacitor array includes a nonflammable liquid dielectric.

10. The pulse power supply system of claim 9 , wherein the nonflammable liquid dielectric is a hydro-fluoro-ether liquid dielectric.

11. A method for supplying pulsed power, the method comprising:
receiving energy from an energy source;
transferring at least a portion of the received energy to an inertial energy storage device to store inertial energy;
transferring at least a portion of the received energy to an electrochemical energy storage system while controlling a rate at which energy is transferred to the electrochemical energy storage system based on a prescribed charging rate associated with the electrochemical energy storage system to store electrochemical energy; and
supplying pulses of power to one or more loads using the stored energy.

12. The method of claim 11 further comprising:
generating the pulses of power using a synchronous modulator electrical machine comprising a tertiary stator winding having an input from a polyphase pulsed excitation system.

13. The method of claim 11 , wherein transferring at least the portion of the received energy to the electrochemical energy storage system comprises directly transferring the energy from the energy source to the electrochemical energy storage system.

14. The method of claim 11 , wherein transferring at least the portion of the received energy to the electrochemical energy storage system comprises transferring energy that is unused by the one or more loads to the electrochemical energy storage system.

15. The method of claim 11 , further comprising:
receiving energy from a plurality of input power sources; and
supplying transient power to the one or more loads.

16. A synchronous modulator electrical machine comprising:
a primary stator winding having an input configured to couple to one or more input Dower sources;
a secondary stator winding having an output configured to provide output power to one or more pulsed loads;
a third stator winding having an output configured to couple to a phase delay rectifier for rectification of output power to a high-voltage pulsed power system; and
a tertiary stator winding having an input configured to couple to a polyphase pulsed excitation system, the tertiary stator winding configured to provide pulsed direct current excitation to the third stator winding in the synchronous modulator electrical machine.

17. The synchronous modulator electrical machine of claim 16 , further comprising:
a rotor configured to provide steady state direct current excitation in the synchronous modulator electrical machine.

18. A system comprising the synchronous modulator electrical machine of claim 16 and further comprising:
the polyphase pulsed excitation system operably connected to the tertiary stator winding;
an inertial energy storage device configured to store inertial energy and operably connected to the synchronous modulator electrical machine;
an electrochemical energy storage system configured to store electrochemical energy and operably connected to the synchronous modulator electrical machine; and
a bidirectional energy transfer system configured to:
receive energy from an energy source;
transfer at least a portion of the received energy to the inertial energy storage device;
transfer at least a portion of the received energy to the electrochemical energy storage system while controlling a rate at which energy is transferred to the electrochemical energy storage system based on a prescribed charging rate associated with the electrochemical energy storage system; and
supply power to at least one of the one or more pulsed loads and the high-voltage pulsed power system using the stored energy.

19. The system of claim 18 , wherein the bidirectional energy transfer system comprises the synchronous modulator bidirectional electrical machine.

20. The system of claim 18 , wherein the bidirectional energy transfer system is configured to directly transfer energy from the energy source to the electrochemical energy storage system.

21. The system of claim 18 , wherein the bidirectional energy transfer system is configured to transfer energy that is unused by the one or more loads to the inertial energy storage device and, after a time delay, transfer a portion of the energy from the inertial energy storage device to the electrochemical energy storage system.

22. The system of claim 18 , wherein the bidirectional energy transfer system comprises a pulse forming network configured to supply pulses of power to the one or more loads using the stored energy.

23. The system of claim 18 , wherein the bidirectional energy transfer system comprises multiple power outputs, the bidirectional energy transfer system configured to supply pulses of steady-state power to a first load

Assignees

• Raytheon Co

Inventors

• Kuznetsov Stephen B

Classifications

• H02J1/002

  using intermediate DC-AC-DC conversion · CPC title

• H02J4/00 Primary

  Circuit arrangements for mains or distribution networks not specified as AC or DC; Circuit arrangements for mains or distribution networks combining AC and DC sections or sub-networks (arrangements using intermediate DC-AC-DC conversion H02J1/002; arrangements using high-voltage DC [HVDC] links H02J3/36) · CPC title

• H02J3/30

  using dynamo-electric machines coupled to flywheels · CPC title

• H02J3/28

  Arrangements for balancing of the load in networks by storage of energy · CPC title

• Y02E60/16

  Mechanical energy storage, e.g. flywheels or pressurised fluids · CPC title