Switching power pulse system

Patent · Sat Jan 01 04:00:00 EST 1983

OSTI ID:864658

Aaland, Kristian ^[1]

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1. Livermore, CA

A switching system for delivering pulses of power from a source (10) to a load (20) using a storage capacitor (C3) charged through a rectifier (D1, D2), and maintained charged to a reference voltage level by a transistor switch (Q1) and voltage comparator (12). A thyristor (22) is triggered to discharge the storage capacitor through a saturable reactor (18) and fractional turn saturable transformer (16) having a secondary to primary turn ratio N of n:l/n=n.sup.2. The saturable reactor (18) functions as a "soaker" while the thyristor reaches saturation, and then switches to a low impedance state. The saturable transformer functions as a switching transformer with high impedance while a load coupling capacitor (C4) charges, and then switches to a low impedance state to dump the charge of the storage capacitor (C3) into the load through the coupling capacitor (C4). The transformer is comprised of a multilayer core (26) having two secondary windings (28, 30) tightly wound and connected in parallel to add their output voltage and reduce output inductance, and a number of single turn windings connected in parallel at nodes (32, 34) for the primary winding, each single turn winding linking a different one of the layers of the multilayer core. The load may be comprised of a resistive beampipe (40) for a linear particle accelerator and capacitance of a pulse forming network (42). To hold off discharge of the capacitance until it is fully charged, a saturable core (44) is provided around the resistive beampipe (40) to isolate the beampipe from the capacitance (42) until it is fully charged.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: Aaland, Kristian (Livermore, CA)
• Patent Number(s): US 4398156
• OSTI ID: 864658
• Country of Publication: United States
• Language: English

Related Subjects

/315/327/331/336/
10
12
16
18
20
22
26
28
30
32
34
40
42
44
accelerator
add
beampipe
c3
c4
capacitance
capacitor
charge
charged
charges
comparator
comprised
connected
core
coupling
d1
d2
delivering
discharge
dump
forming
forming network
fractional
functions
hold
impedance
inductance
isolate
layers
level
linear
linear particle
linking
load
maintained
multilayer
network
nodes
output
output voltage
parallel
particle
particle accelera
particle accelerator
power
power pulse
primary
primary winding
provided
pulse
pulse forming
pulses
q1
ratio
reaches
reactor
rectifier
reduce
reference
reference voltage
resistive
saturable
saturable reactor
saturation
secondary
secondary winding
secondary windings
single
soaker
source
storage
storage capacitor
switch
switches
switching
switching power
thyristor
tightly
transformer
transistor
transistor switch
triggered
voltage
voltage comparator
voltage level
winding
windings
wound