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OPERATIONAL EM RAILGUN / 700k AMP SWITCHED CAP PULSED POWER SUPPLIES​

This is a fully operational "turn-key" electromagnetic railgun system capable of launching a projectile to well over 3900 feet per second. The
system is based on a capacitor-discharge pulse-forming network (PFN). Capacitors are charged to 400V. To fire the gun, the capacitors are
discharged into the rails by closing thyristor switches in rapid succession. There are 32 capacitor-thyristor switch modules that can
each be individually controlled. The current profile and projectile acceleration is programmable. The system includes an electromechanical
loader to inject the projectile (armature) into the barrel at the breech end. It also includes an arc-flash chamber with integrated catch
assembly to contain the blast and projectile. A cabinet with power supplies and controls hardware is included. Manuals and safety equipment
are also included. From loading to firing - everything is controlled from a remote PC terminal (included). This system can be used with 1 PFN cabinet (described below), or with 2 PFN cabinets for the full 1 mega amp capacity.

EML Composed of 3 subsystems:

1. PFN (Pulse Forming Network) -
2. Control Cabinet
3. Launcher

MODULAR >500,000 POWER CURRENT CABINET (PFN)
1x cabinet contains
16x Type 1 modules, each module has:
400V rated capacitor bank, 1.6kJ energy storage per module
150A/us rate of rise for current
30kA peak short circuit current
1200V rated thyristor and two diodes in semiconductor clamp assembly
2.2uH pulse power inductor with 500 microOhm ESR, rated for 30kA
Ultra fast gate drive units for each module
Fully independent control
4x Type 2 modules
2kV rated capacitor bank, 5kJ energy storage per module
Up to 22kA/us rate of rise for current
45kA rated peak current under full load
4500V rated pulsed power thyristor and two diodes in semiconductor assembly
High voltage ultra fast fully isolated gate drive units for each module
500A peak gate current with 200ns rise time
Optical signal isolation
Fully independent control
1x Type 3 Modules
400V rated, 18.5kJ total energy storage
Bus Bar Assembly, 6" tall and 2" wide
Four layer laminated bus bar with 0.25" thick al
Instrumentation
5x four channel 400V fully differential voltage divider
1x four channel 2kV fully differential voltage divider
Relay System routes power

Control Cabinet
1x TDK three phase capacitor charging power supply, rated for 2kV at 9kW
continuous
Optically isolated fiber optic communication to remote location
Logic power supply distribution to all EML subsystems
5V, 12V, 15V, -15V, 24V
Microprocessor control of PFN
40 channel control
12.5ns timing resolution
Microprocessor control of all other subsystems
40 channel independent relay control
Control of loader, three phase power supply
Multiplexor system for real time data collection of PFN voltages, power
supply status, loader status
60 channel capacity
Launcher
1cm x 1cm bore size
1m length
Rated for >200kA continuous peak launch current
Steel containment structure, 8" x 9" cross sectional area
Copper rails connect coaxial cable clamps
Loader assembly
18" insertion length with swappable tips
Up to 200lbs of insertion force
Manual and full auto control
Real time position and force measurement
Launcher stand, 120cm length, 80cm height, 60cm width
Sliding table with shock absorbers to mitigate recoil
Instrumentation
Signal conditioner and digital signal processing for B-Dot probes
Dimensions:
(L x W x H in inches)
PFN Cabinets (2): 40" x 34" x 93" without relays & resistors. Add 24" to
height with relays & resistors.
EML Gun Assembly: 47" x 24" x 43"
Loader: 56" x 18" x 42"
Catch: 39" x 23" x 41" minimum. Add 32" for optimal length with added
insert (included)
Controls Cabinet: 34" x 24" x 95"
Computer and Control Software (remote via optic fiber)
Two emergency shut-down push-button switches.

Circuit Schematics

Mechanical Drawings Accessories:
HV Safety equipment (on dolly):
- Shorting + Resistor sticks
- Capacitor safety shorting straps (crocodile clip) & rack
- HV rescue hook
- Electrical Safety Gloves

Requirements:
110V Single Phase for small Power Supplies for controls.
The main power supply (for charging capacitors in modules) can operate from single phase or 208V 3-phase.

MODULAR 700,000 AMP PULSED POWER SUPPLY

Item Description:
This is a modular programmable high-current pulsed power supply capable of delivering a current of up to 700,000 Amperes. The system is a
switched capacitor-discharge pulse-forming network (PFN). There are 32 thyristor-switched capacitive modules that can each be individually
controlled to deliver 32kA each, and 4 modules capable of delivering 45kA each. The system comes with voltage dividers and a relay network
with resistors for safe discharging

Dimensions:
(L x W x H in inches)
PFN Cabinets (2): 40" x 34" x 93" without relays & resistors. Add 24" to
height with relays & resistors.

Circuit Schematics

Accessories:
- Capacitor safety shorting straps (crocodile clip)
​

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