SU1392615A1 - Linear induction accelerator power supply source - Google Patents

Abstract

The invention is intended for .1 2 powering of forming lines and demagnetization circuits of ferromagnetic cores of linear induction accelerators (LIAs). The power source of LIA contains charging inductance 2, capacitive storage 7, pulse transformer 13, transformer 10, diodes 6.11, resistor 12, sensor 4 the end of the current pulse, the switching capacitor 5, the thyristor 8, the amplitude comparator 9c. Transformer 10 has an output for connecting to the helical inductances 19 of the demagnetization of the induction system, and an output for connecting the focusing coil 21 of the LIA. Povsharts KPI LIU, 2 Il. a & (L

Description

ten

15

20

11392615

The invention relates to a pulse technique and is intended for feeding the forming lines and demagnetization chains of ferromagnetic cores of linear induction accelerators (LIA).

The aim of the invention is to increase the efficiency and simplify the design

Fig. 1 is a schematic diagram of a power source and a functional diagram of the injection part of a linear induction accelerator; fig2 current and voltage diagrams of

The thyristor 1 is connected to the charge inductance 2, shunted by the switching thyristor 3 and the circuit from the sensor 4 of the current pulse and switching capacitor 5 to which the diode 6 is connected to the cathode, the capacitive drive 7 to which potential output is connected to the thyristor 8 and parallel to the capacitive drive amplitude comparator 9, demagnetization transformer 10, parallel to the part of the primary winding of which the circuit is connected: diode 11, resistor 12, pulse transformer 13, the secondary winding of which is connected to the common the bus through the sensor 14 of the end of the current pulse

In the figure marked spark ca-. Multichannel surge arrays 15, connected to equivalent capacitances 16 of stripline double forming line SDFL), ferromagnetic cores 17 LIA, separation capacitors 18, spiral inductors 19 demagnetization, accelerator case 20 electrically connected to the common bus, and focusing coil 21 "

Fig. 2 shows the main plots of currents and voltages in the power supply and LIA: 22 - voltage of capacitive storage 7; 23 - current inductance 2; 24 is the voltage of the switching capacitor 5; 25 - voltage on the strip DFL capacity; 26 - current charged yes 25

thirty

35

40

constant voltage, for example unmanaged rectifier

The device works as follows

When the thyristor I is turned on, the charge of the capacitive accumulator 7 begins: on the charge inductance 2 ". When the required voltage on the capacitive accumulator is reached by a signal from the amplitude comparator, the switching thyristor 3" turns on. This corresponds to the time t (Fig. 2). Thyristor 1 turns on and shuts off a source of a constant voltage „0ccavity current of the inductance 2 is intercepted into the circuit of the switching capacitor 5 and charges it. Taking into account that the capacitor 5's capacitance is much less than the capacitance of the capacitive storage 7, the voltage of the switching capacitor quickly reaches the voltage capacitive accumulator 7, diode 6 opens, and by the time in inductance 2 drops to zero o At the same time, from the sensor 4 of the current pulse which is a full choke, delivers a signal to the thyristor 8, which connects the capacitive drive 7 and the switching capacitor 5 to the transformer 10 and the pulse transformer 13o. This produces an oscillatory charge of the capacitance 16 of the strip DFL through the scattering transformer inductance and simultaneously through the transformer 10 and the spiral inductance 19 demagnetization of ferromagnetic cores 17o At time point t., when energy from capacitive storage 7 is transferred to capacitance 16 of strip DFL, and the current of the secondary winding of the pulse HC- D5 shaper (aka 26 charge current po- loskonoy TPL) goes to zero, is supplied with pulse sensor; 4 completion of the current pulse on start multichannel surge arrestor 15 and are connected to strip-TPL

howl DFL; 27 - pulse of accelerating magnetization turns ferromagnetic

0

five

0

five

0

five

0

constant voltage, for example unmanaged rectifier

The device works as follows

When the thyristor I is turned on, the charge of the capacitive accumulator 7 begins: on the charge inductance 2 ". When the required voltage on the capacitive accumulator is reached by a signal from the amplitude comparator, the switching thyristor 3" turns on. This corresponds to the time t (Fig. 2). The thyristor 1 turns on and shuts off the source of a constant voltage „0ccavcary current of the inductance 2 is intercepted into the circuit of the switching capacitor 5 and charges it. Considering that the capacitor 5 capacitance is much less than the capacitance of the capacitor 7, the voltage of the commutating capacitor quickly reaches the voltage of capacitive accumulator 7, the diode 6 opens and drops to zero o at the same time as the current pulse from sensor 4 which is a throttle of the end, a signal is supplied to the thyristor 8, which connects the capacitive drive 7 and the switching capacitor 5 to the transformer 10 and the pulse transformer 13o. The charge of the capacitance 16 of the strip DFL through the dissipation inductance of the pulse transformer and simultaneously through the transformer 10 and the spiral inductance 19 degrades the ferromagnetic cores to 17o. At time t., when the energy from the capacitive accumulator 7 is transferred to the capacitance 16 of the strip DFL, the secondary winding the pulse transformer (it is the voltage of the 26 DFL high voltage charge) goes to zero, a pulse is sent from the sensor; 4 current pulses to start the multi-channel discharger 15 and loskovye DFL are connected to

ka in LIU; 28 - current of spiral inductances 19; 29 - demagnetization current of the pulse transformer 13 In the initial state, the energy in all the reactive elements of the power source of the linear induction accelerator is absent, and a source is connected to the input terminals of the source

cores 17 In the time interval t 5 t 4 in the cathode-anode gap K-A, an accelerating current pulse is generated in LIA 27.

In the time interval, the primary winding of the transformer 10 is applied to the voltage of a capacitive macroopitel 7o Under the action of EMF

the secondary winding of the transformer 10, the current in the spiral inductors 19 of the demagnetization circuit is increased to the maximum value. When a multichannel discharger fails or slightly earlier, when the voltage on the capacitive drive 7 changes sign, diode 11 is turned on and part of the primary winding is shorted through the resistor 12. At the same time, the secondary windings of the transformer 10 (inductance current 19) balance the amperages of the short circuit o In the process of forming an accelerating voltage pulse in the cathode-anode gap K-A, the inductance current 19 increases (time interval t4 tj), since the spiral inductances through the separator The capacitors 18 are impacted by the voltage K-A of the gap from Beginning at time t5, TOK in inductance 19 and the secondary winding of transformer 10 are balanced by part of the short-circuited primary winding through diode 11 and resistor 12o. Under the effect of the voltage drop across the resistor 12 in the circuit the primary winding of the transformer 10 - the primary winding of the pulse transformer 13 flows a current 29, which demagnetizes the core of the pulse transformer to create the required demagnetization current Inherent inherent resistance of the shorted winding of the transformer 10 and the diode IK

Similarly to the above, placing another winding in the transformer 10, connected by one lead to the accelerator case, and another lead to the focusing KaT anjKe 21, in the time interval, you can provide the amp twist for the focusing magnetic field in the focusing winding. It is advisable to use at small values

five

five

0

five

0

five

no focusing magnetic fields - up to 0.2 T

Thus, the proposed power source of a linear induction accelerator with a pulse transformer, equipped with an additional transformer for powering the demagnetization circuits of the ferromagnetic cores and the accelerator focusing roll, allows from one power source to charge the strip forming lines, demagnetizing the ferromagnetic cores, creating extension bands, creating extension lines, creating extension lines, creating extension lines, creating extension bands, creating extension bands, creating extension bands, creating extension bands, creating extension bands, creating extension bands, creating extension lines, creating extension lines, creating extension lines, creating extension lines, creating extension lines, creating extension lines. floor and demagnetization of the pulse transformer.

Claims (1)

Invention Formula The power source of a linear induction accelerator containing a charge inductance, a capacitive storage device, switching devices in the primary circuit of a pulse transformer, the secondary winding of which has a lead for connection to a forming line of a linear induction accelerator, characterized in that, in order to improve efficiency and simplify the design, additionally, a transformer and a circuit from a diode and a resistor are introduced, with the primary winding of the additional transformer connected in parallel with the primary winding of the imp a pulse transformer and has an intermediate lead to which a shunt diode resistor circuit is connected, one of the secondary windings of an additional tethannomizer has a terminal designed to be connected to the helical demagnetization inductance of the induction system of the linear induction accelerator, and the other secondary winding has a terminal to connect the focusing coil induction accelerator. 4i