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Patent 8018096 Click For Printable Version of This Patent
Patent Information:  USPTO Site Listing

Patent Number: 8018096
Case ID: 0
Patent Title: Inductive pulse forming network for high-current, high-power applications
Status: ACTIVE
Status Date: 9/23/2011 8:40:35 AM
Issue Date: 9/13/2011
Filed Date: 1/19/2010
Serial #: 2/689,848
Assignee Name: The United States of America as represented by the Secretary of the Navy (Washington, DC)
Inventor(s): Maier, II, William Bryan
Lab Information:  View Lab Profile

Lab Name: Naval Postgraduate School
Location: Halligan Hall, Room 222
Monterey, CA 93493-5000
Contact: Contact Lab About This Patent

1. Field of the Invention

The present invention generally relates to pulse forming networks. More particularly, the present invention relates to high-current, high-power, inductive pulse forming network for use with electromagnetic launchers such as railguns and electromagnetic aircraft launchers.

2. Description of the Related Art

A Pulse forming network (PFN) is an electrical circuit or device that provides a high-power, short-duration pulse of electrical energy of desired waveform. The elements of a PFN are electrically coupled and configured to make a transient current pulse of specific waveform across a load when a load switch is closed.

PFNs have applications, well known to those of skill in the art, in high-power, short-duration power supplies used, for example, in pulsed lasers, pulsed magnetic plasma confinement machines, high-powered microwave weapons, pulsed accelerators for flash x-ray and pulsed el . . . . More
An inductive pulse forming network stores electrical energy delivered from an outside prime power supply in the electric field of a low-voltage, high-energy density network capacitor. Through timed actuation of a series of one or more switches, the energy stored in the electric field of the network capacitor is subsequently converted to electrical energy stored in the magnetic field of a network inductor. The energy stored in the network inductor supplies high-current, high-power electrical energy to drive an electromagnetic launcher such as a railgun.
What is claimed is:

1. A method of using an inductive pulse forming network comprising: providing a network capacitor; coupling a network switch, a second network switch, and a load switch in series with said network capacitor; coupling a network inductor in parallel with a load at a point between said second network switch and said load switch and at a point between said load and said network capacitor; providing an arc suppression system switch; coupling in parallel with said network inductor an arc suppression system impedance device, through said arc suppression system switch, at a point between said first network switch and said second network switch and at a point between said network capacitor and said network inductor; and initially setting switches comprising: setting said network switch open; setting said load switch open; setting said second network switch closed; setting said arc suppression system switch open; charging said network capacitor from an outsi . . . . More