CN102510208A - LR (low-rate) network buffer of neutral beam high-voltage pulse power supply - Google Patents
LR (low-rate) network buffer of neutral beam high-voltage pulse power supply Download PDFInfo
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- CN102510208A CN102510208A CN2011103570785A CN201110357078A CN102510208A CN 102510208 A CN102510208 A CN 102510208A CN 2011103570785 A CN2011103570785 A CN 2011103570785A CN 201110357078 A CN201110357078 A CN 201110357078A CN 102510208 A CN102510208 A CN 102510208A
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Abstract
The invention relates to an LR (low-rate) network buffer of a neutral beam high-voltage pulse power supply. The LR network buffer comprises an embedded type induction coil, wherein high-voltage resistor arrays are connected at the two ends of the embedded type induction coil in parallel, and high-voltage leading-out wires are led out from the two parallel-connection ends of the embedded type induction coil and the high-voltage resistor arrays. When the LR network buffer disclosed by the invention operates normally at high voltage, the current of a main loop passes through the embedded type induction coil and the high-voltage resistor arrays are bypassed; and when a load is in sparking short circuit, the stored energy of a distributed capacitor of a power supply system is released to the load, the high-voltage resistor arrays can absorb most of the stored energy of the power supply output distributed capacitor, the performances of a power supply can be simultaneously kept unchanged, the output current of the high-voltage power supply has no overshooting in any type, and the safety and the reliability of the load and the power supply are ensured. In addition, the LR network buffer disclosed by the invention is simple in structure, low in cost and easy to design and debug.
Description
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Technical field
The present invention relates to neutral beam high-voltage pulse power source field, especially a kind of neutral beam high-voltage pulse power source LR network buffer.
Background technology
Thermonuclear fusion reactor need be given heated by plasma through neutral beam, and the neutral beam high voltage source is the key subsystem of device.Because different service conditionss, sparking takes place often between the high voltage source load electrode, and the short circuit of striking sparks between the pole plate is inevitable, especially draws the stage in high pressure exercise and bundle, and sparking, punch-through frequently take place between electrode.In order to protect ion source, the current peak when energy accumulation on electrode and puncture must limit.When power protection, the energy storage of high-pressure system distributed capacitance can't be broken off through switch, can directly discharge through load, and common discharge time is very fast, and the surge current amplitude is high, must limit.
At present; Some high voltage power supply seals in big inductance in major loop; Be used for limiting current-rising-rate, the energy and the current amplitude that make the high-speed switch action be discharged into load before compensated permissible value, and some then adopts CORE-SNUBBER to absorb the distributed capacitance energy storage.Yet there is the problem that cost is high, parameter discrete property is big, adjustment is difficult with upper type.
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Summary of the invention
The object of the present invention is to provide that a kind of cost is low, reliability is high, be easy to the neutral beam high-voltage pulse power source LR network buffer that designs and debug.
For realizing above-mentioned purpose; The present invention has adopted following technical scheme: a kind of neutral beam high-voltage pulse power source LR network buffer; Comprise the embedded inductor coil; The high-tension resistive array is connected in parallel on the two ends of embedded inductor coil, and two parallel connected end of embedded inductor coil and high-tension resistive array are drawn the high pressure lead-out wire.
Can be known that by technique scheme when the present invention normally moved at high pressure, main circuit current was through the embedded inductor coil, the high-tension resistive array is by bypass; When load sparking short circuit; The distributed capacitance C energy storage of power-supply system releases energy to load; The high-tension resistive array can absorb most energy storage of power supply output distributed capacitance C; Keep power source performance constant simultaneously, the high voltage source output current does not have any overshoot, has guaranteed the safe and reliable of load and power supply.In addition, of the present invention simple in structure, cost is low, be easy to the design and the debugging.
Description of drawings
Fig. 1,2 is structural representation of the present invention;
Fig. 3 is the circuit connection diagram of the present invention in high voltage power supply;
Fig. 4 is a current waveform figure of the present invention.
Embodiment
A kind of neutral beam high-voltage pulse power source LR network buffer; Comprise embedded inductor coil 1; High-tension resistive array 2 is connected in parallel on the two ends of embedded inductor coil 1, and embedded inductor coil 1 is drawn high pressure lead-out wire 3 with two parallel connected end of high-tension resistive array 2, like Fig. 1, shown in 2.Fig. 1 is a front view of the present invention, and Fig. 2 is a left view of the present invention.
Like Fig. 1, shown in 2, described embedded inductor coil 1 is arranged in the epoxy cylinder 5, and described high-tension resistive array 2 is made up of the high-tension resistive of a plurality of parallel connections, and the high-tension resistive of a plurality of parallel connections is connected in parallel on the two ends of embedded inductor coil 1.Described embedded inductor coil 1 adopts copper conductor, and the number of described high-tension resistive is 8.
As shown in Figure 3; Said embedded inductor coil 1 meets distributed capacitance C with the end high pressure lead-out wire 3 that the parallel connected end of high-tension resistive array 2 is drawn; The other end high pressure lead-out wire 3 of drawing connects load; The embedded inductor coil 1 of parallel connection constitutes the loop with high-tension resistive array 2, distributed capacitance C and load, and high voltage source is attempted by on the distributed capacitance C.The LR network buffer is connected in the output loop of power supply of high pressure, and its particular location is between power supply output distributed capacitance C and load.When output short-circuit, the incipient short electric current embedded inductor coil 1 of flowing through, the peak value of electric current be for to be directly proportional with output voltage, is inversely proportional to the square root of L/C.Therefore, under the certain situation of distributed capacitance C,, just can the high voltage source short circuit current be suppressed within certain amplitude as long as enough big embedded inductor coil 1 is arranged.The effect of high-tension resistive array 2 is that damping is carried out in LC vibration, and the energy of distributed capacitance C is fallen at a resonance cycle internal consumption, and the power of its withstand voltage is important index.
Like Fig. 1, shown in 2; Described embedded inductor coil 1 is embedded in the volution trough of epoxy cylinder 5; Cover epoxide-resin glue on the embedded inductor coil 1; Described epoxy cylinder 5, high-tension resistive array 2 all are fixed on the epoxy insulation support 4, and epoxy insulation support 4 is fixedly mounted on and supports on the porcelain vase 6, supports the output that porcelain vase 6 is installed in high voltage power supply.Because the inductance moment in the network is born high voltage, can reach 50KV, therefore adopts the design of embedded inductor coil 1, is about to copper conductor and is embedded in the epoxy cylinder 5 that has volution trough.High-tension resistive array 2 is connected in parallel on the two ends of embedded inductor coil 1, to guarantee the high reliability of LR network when bearing impulse discharge current.
In the neutral beam high voltage power supply; Output rated voltage 50KV; Export specified steady-state current 100A, power supply equivalent load Z=500
, the inductance value that embedded inductor coil 1 in the LR network buffer is set is 100uH; And be the hollow inductance; Stable state 100A, transient current peak value 800A, pulsewidth 2us; The resistance of high-tension resistive array 2 be 10
; Steady-state current 0A; Transient state 3kA; Noninductive, withstand voltage 50kV.When high pressure normally moved, main circuit current was through embedded inductor coil 1, and high-tension resistive array 2 is by bypass.
When load sparking short circuit occurring, prime high-speed switch IGBT can cut off the electricity supply by 3us, the energy that power supply provides to load during the restriction load sparking, however distributed capacitance C is charged to 50kV when prime is turn-offed.Distributed capacitance C releases energy to load; High-tension resistive array 2 can absorb most energy storage of power supply output distributed capacitance C; Keep power source performance constant simultaneously; This is because discharge time is very short, and 1 pair of electric current of embedded inductor coil plays blocking action, and electric current is most of through high-tension resistive array 2.
Fig. 4 has shown when output short-circuit, the electrical quantity that the LR network is relevant, and wherein a is a load current waveform, and b is the current waveform of inductance L, and c is the high voltage source output current wave, and d is the high voltage source output voltage.Can find out that when load sparking or short circuit, the output current peak value is limited in 8 times of steady-state currents, pulsewidth is in 2 microseconds, and the high voltage source output current does not have any overshoot, has guaranteed the safe and reliable of load and power supply.
In a word; The invention solves the output sparking protection problem of all kinds of assistant heating high voltage sourcies of thermonuclear fusion reactor; When high voltage source output short-circuit or sparking, suppress short circuit current, make vacuum device operate in safe service area, more traditional core buffer is compared; Of the present invention simple in structure, cost is low, be easy to the design and the debugging.
Claims (6)
1. neutral beam high-voltage pulse power source LR network buffer; It is characterized in that: comprise embedded inductor coil (1); High-tension resistive array (2) is connected in parallel on the two ends of embedded inductor coil (1), and embedded inductor coil (1) is drawn high pressure lead-out wire (3) with two parallel connected end of high-tension resistive array (2).
2. neutral beam high-voltage pulse power source LR network buffer according to claim 1; It is characterized in that: described embedded inductor coil (1) is arranged in the epoxy cylinder (5); Described high-tension resistive array (2) is made up of the high-tension resistive of a plurality of parallel connections, and the high-tension resistive of a plurality of parallel connections is connected in parallel on the two ends of embedded inductor coil (1).
3. neutral beam high-voltage pulse power source LR network buffer according to claim 1; It is characterized in that: said embedded inductor coil (1) meets distributed capacitance C with the end high pressure lead-out wire (3) that the parallel connected end of high-tension resistive array (2) is drawn; The other end high pressure lead-out wire (3) of drawing connects load; The embedded inductor coil (1) of parallel connection and high-tension resistive array (2), distributed capacitance C and load constitute the loop, and high voltage source is attempted by on the distributed capacitance C.
4. neutral beam high-voltage pulse power source LR network buffer according to claim 2; It is characterized in that: described embedded inductor coil (1) is embedded in the volution trough of epoxy cylinder (5); Embedded inductor coil (1) is gone up and is covered epoxide-resin glue; Described epoxy cylinder (5), high-tension resistive array (2) all are fixed on the epoxy insulation support (4), and epoxy insulation support (4) is fixedly mounted on and supports on the porcelain vase (6), supports the output that porcelain vase (6) is installed in high voltage power supply.
5. neutral beam high-voltage pulse power source LR network buffer according to claim 2, it is characterized in that: the number of described high-tension resistive is 8.
6. neutral beam high-voltage pulse power source LR network buffer according to claim 2 is characterized in that: described embedded inductor coil (1) adopts copper conductor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103570785A CN102510208A (en) | 2011-11-11 | 2011-11-11 | LR (low-rate) network buffer of neutral beam high-voltage pulse power supply |
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| CN2011103570785A CN102510208A (en) | 2011-11-11 | 2011-11-11 | LR (low-rate) network buffer of neutral beam high-voltage pulse power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387859A (en) * | 2018-05-02 | 2018-08-10 | 广州赛宝计量检测中心服务有限公司 | Measurement and calibration fictitious load, measurement and calibration instrument and the measurement and calibration system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101924490A (en) * | 2010-08-24 | 2010-12-22 | 合肥华耀电子工业有限公司 | Inductive energy-storage microsecond-grade high-power pulse current source |
| CN202363892U (en) * | 2011-11-11 | 2012-08-01 | 合肥华耀电子工业有限公司 | Neutral beam high-voltage pulse power supply LR (Long Range) network buffer |
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- 2011-11-11 CN CN2011103570785A patent/CN102510208A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101924490A (en) * | 2010-08-24 | 2010-12-22 | 合肥华耀电子工业有限公司 | Inductive energy-storage microsecond-grade high-power pulse current source |
| CN202363892U (en) * | 2011-11-11 | 2012-08-01 | 合肥华耀电子工业有限公司 | Neutral beam high-voltage pulse power supply LR (Long Range) network buffer |
Non-Patent Citations (1)
| Title |
|---|
| 曹亮等: "直流高压缓冲器的研制", 《高电压技术》, vol. 36, no. 5, 31 May 2010 (2010-05-31), pages 1269 - 1273 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387859A (en) * | 2018-05-02 | 2018-08-10 | 广州赛宝计量检测中心服务有限公司 | Measurement and calibration fictitious load, measurement and calibration instrument and the measurement and calibration system |
| CN108387859B (en) * | 2018-05-02 | 2023-11-21 | 广州赛宝计量检测中心服务有限公司 | Analog load for metering calibration, metering calibration instrument and metering calibration system |
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Application publication date: 20120620 |