CN2185010Y - Silicon control high frequency high voltage dc power source - Google Patents
Silicon control high frequency high voltage dc power source Download PDFInfo
- Publication number
- CN2185010Y CN2185010Y CN 93222104 CN93222104U CN2185010Y CN 2185010 Y CN2185010 Y CN 2185010Y CN 93222104 CN93222104 CN 93222104 CN 93222104 U CN93222104 U CN 93222104U CN 2185010 Y CN2185010 Y CN 2185010Y
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- Prior art keywords
- voltage
- power supply
- current
- frequency
- regulation
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 5
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 5
- 239000010703 silicon Substances 0.000 title claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims abstract description 13
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 3
- 238000004146 energy storage Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000001105 regulatory effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 208000032370 Secondary transmission Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005367 electrostatic precipitation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000007363 regulatory process Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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Abstract
The utility model discloses a silicon control high frequency high voltage DC power source, adopting a multiple voltage rectifying voltage raising circuit to store energy to convert current and the voltage is resonant. The AC voltage is input from a 1 and a 2 ends and conducts the combinatorial regulation through capacitors C0 to Cn, the mechanical switches K0 to Kn are the manual voltage regulating setting switches, and the AC voltage is regulated by the mechanical switches J0 to Jn or a bidirectional thyristor through the automatic control circuit. The capacitance voltage regulation has no new techniques such as the industrial frequency transformer DC power supply, PWM pulse integrated circuit, etc. The switching frequency is 5 to 20KHz, the resonant frequency is 500KHz and the power supply power conversion is over 90%. The utility model can work under the conditions of spark discharge and short circuit due to the high voltage with no need of spark control protection, and can generate high voltage and extra-high voltage DC of high-power multiple voltage rectifying boosting.
Description
The invention belongs to power electronics uses
The new technology in field.Be mainly used in electrostatic precipitation, laser, X-ray production apparatus etc. and require the aspect of DC high-voltage power supply.
Like product has at present:
A, the direct booster type DC high-voltage power supply of Industrial Frequency Transformer;
B, many multiplication of voltages of power transistor switch type DC high-voltage power supply;
C, reverse-blocking tetrode thyristor L-C series voltage resonance DC high voltage source.
The characteristics of above power supply are:
1. operating frequency is low, and power supply conversion efficiency is low;
2. Industrial Frequency Transformer is all arranged, and volume weight is big;
3. sparkover control protection is difficult;
4. high-tension transformer manufacturing process complexity, the cost height.
At the shortcoming of above power supply, the present invention mainly solves:
A, remove Industrial Frequency Transformer, reduce power volume weight;
B, raising power supply sparkover ability to bear improve the power supply dependability;
C, the new switch power technology of employing improve power supply conversion efficiency, improve result of use;
D, simplification regulatory process, convenient quick maintaining, easy to utilize.
The present invention has following characteristics:
1, the reverse-blocking tetrode thyristor circuit is taked the energy storage change of current, and voltage parallel resonance technology by the quick power conversion of voltage parallel resonance, improves the conversion efficiency of power supply with the energy storage electromotive force of the many voltage multiplying rectifiers of conventional transistor switch power supply.
2, the high frequency voltage that utilizes the voltage parallel resonance to many voltage doubling rectifing circuits electric capacity charging rate far faster than the secondary high pressure velocity of discharge; when not adding any safeguard measure; the continuously sparking high voltage short circuit even that discharges, power supply still can operate as normal and are recovered operate as normal automatically.
3, line voltage is regulated and control through capacitor bank, and rectification does not have filtering 100HZ direct voltage, and when the switching circuit commutation failure, the power supply short circuit electric current is not more than rated operational current.
4, adopt frequency synthesis technique that the 100HZ direct voltage is carried out copped wave, synthetic 100HZ high direct voltage contains the peak value pulse voltage of μ S level, obtains result of use preferably with less electric energy.
5, no industrial frequency transformer DC high-voltage power supply, volume weight minimum in existing similar power supply.But low voltage control part and high pressure output part separating device use common cable to do long distance connection, shorten expensive direct current high voltage cable significantly, and high pressure output insulating reliability is improved.
(Fig. 1) alternating voltage carries out combinatorial regulation from 1,2 ends inputs and by capacitor C o-Cn, and mechanical switch Ko-Ku is the manual voltage regulation configuration switch, and Jo-Jn mechanical switch or use bidirectional triode thyristor is implemented alternating voltage by automatic control circuit and regulated and control.
The regulation and control alternating voltage enters rectifier bridge through 3,4 ends, and rectifier bridge is that fast recovery diode is formed, and its function also will provide the quick path of the current of commutation except that AC rectification, rectifier bridge four arms piezo-resistance R in parallel
2-R
5, rectification output 100HZ end is through the direct voltage of filtering.
Do not fill at rectifier bridge output 5,6 ends and to be permitted filtering capacitor in parallel, this special requirement is to guarantee K switch
1, K
2The change of current is normally carried out, otherwise whole high-frequency high-voltage direct-current power supply can't operate as normal and lost performances all in the specification.
5,6 end 100HZ DC power supply are given reverse-blocking tetrode thyristor K by a, b, the c of transformer T at 3
1, K
2Power supply, switch provides trigger impulse to carry out work by TL494 dedicated PWM integrated circuit.Reverse-blocking tetrode thyristor K
1, K
2Be to utilize coil N
3With capacitor C
1-C
8Energy storage carry out change of current work, K
1, K
2Switching frequency 5-20KHZ be modulated into hundreds of kilo hertzs high-frequency electrical pulses by parallel resonance and press to many voltage-multiplying circuits rechargeable energy is provided.
The 100HZ direct voltage is powered to the b of transformer end by the capacitor C and the R of insurance BX and BX parallel connection, and the effect of capacitor C and R is the overshoot current after the absorption BX fusing, components and parts in the protection main circuit.
Below in conjunction with accompanying drawing, provide embodiment and be described in further detail.
Fig. 1 is the utility model schematic diagram
Fig. 2 is this reverse-blocking tetrode thyristor circuit working oscillogram
Fig. 3 is this reverse-blocking tetrode thyristor K
1, K
2Change of current schematic diagram
Fig. 4 is the novel instance graph of this controllable silicon
(Fig. 4) electrical network AC voltage is through C
o-C
n, manual regulating switch K
o-K
nThe auto-control K switch
Ao-K
AnCombinatorial regulation voltage is exported direct voltage+E that 100HZ does not have filtering through bridge full-wave rectifier, and+E is as reverse-blocking tetrode thyristor K
1, K
2Direct-current working volts.K
1, K
2Under the both-end trigger impulse effect of PWM output, general+E be transformed into high-frequency pulse voltage through transformer T to secondary transmission energy, produce high direct voltage supply load more than the negative 100KV by many voltage multiplying rectifiers booster circuit.
K
1, K
2The overcurrent-overvoltage signal S of switching circuit
2, S
3Pass to control circuit, the overcurrent-overvoltage signal of high pressure and the temperature signal S of device for power switching by the photoelectricity isolation
4-S
6Directly pass to control circuit, by setup program power-supply system is implemented the protection regulation and control, guarantee the work that power-supply system is reliable and stable.
Reverse-blocking tetrode thyristor K
1, K
2The change of current course of work.(referring to Fig. 3, waveform is referring to Fig. 2)
1, at t
0Before: K
1End K
2Conducting, equivalent electric circuit such as Fig. 3 (a).Dc power supply+E is through K
1Give coil N
2Inductance L
2With grade capacitor C N
2The antiresonant circuit power supply of forming produces and keeps current i
2, resonance potential U
N2(b point just, c point negative) voltage magnitude is 2E.
∵ U
K2=0(conducting) ∴ U
E=U
N2=2E
Because the effect of autotransformer is at coil N
1Producing amplitude is the induced voltage U of 2E
N1(a point just, b point negative), U
N1=U
N2=2E, U
N1, U
N2Common secondary N to transformer T
3Transmit energy.
2, at t
0Constantly: U
T1Trigger K
1Conducting, level circuitry such as Fig. 3 (b)
K
1Conducting moment, K
1, K
2Short circuit N
1, N
2, the energy of storing in the coil is from N
1A end through K
1, K
2Get back to N
2C end discharge and form current i
3: K flows through
1Branch current i
1=i
3, waveform is seen U among Fig. 2
R1, K flows through
2The reverse current i of branch road
2'=i
3-i
2, (i
2Be t
0Preceding current value), waveform is seen U among Fig. 2
R2, the current i of the DC power supply of flowing through+E branch road
1'=i
3-i
2', coil N meanwhile
1, N
2For stoping i
3Increase produce back-emf U
N1' (a point is negative, and the b point just) and U
N2' (the b point is negative, and the c point just).i
2' at t
1Constantly force K
2Turn-off K
1, K
2Finished commutation course one time.
3, at t
1To t
2Constantly: K
1Conducting K
2End equivalent electric circuit such as Fig. 3 (c)
After energy storage in the coil all discharged and finishes, DC power supply+E was through K
1Give coil N
1Inductance L
1With equivalent capacity C
N1Form the antiresonant circuit power supply, produce and keep current i
1, resonance potential U
N1=2E(a point is negative, and the b point just).Because the effect of autotransformer is at coil N
2Last generation amplitude equals the induced voltage U of 2E
N2(the b point is negative, and the c point is just), U
N2=U
N1=2E
U
K2＝U
N2＋U
E＝2E＋2E＝4E
U
N1, U
N2Common secondary N to transformer T
3Transmit energy.
4, at t
2Constantly: trigger K
2Conducting, the change of current of coil energy storage is at t
3Constantly force K
1Turn-off, finished another time commutation course.Repeat the course of work of above-mentioned 1-3, K switch
1, K
2In turn conducting ends, with 100HZ DC power supply+E become high-frequency pulse voltage through high frequency transformer T to secondary N
3Transmit energy.
Anti-sparkover operation principle
K switch
1, K
2Take turns to operate and DC power supply+E be transformed into the pulse voltage of 5-20KHZ, antiresonant circuit L
1C
N1And L
2C
N2Again the pulse voltage of 5-20KHZ is modulated into the high-frequency pulse voltage of hundreds of KHz, makes the capacitor C of many voltage doubling rectifing circuits
1-C
8Charging rate far faster than electric capacity to the velocity of discharge of high resistance load (high-voltage load is the air load, and general impedance is 20M Ω), promptly charge energy storage much larger than discharge release can, again because the internal resistance of many voltage multiplying rectifiers booster circuit is quite high, (N
3Inductance value be generally tens of Henry, electric capacity is several thousand PF).The discharge exoergic process is to pass to N from high-voltage load one-level one-level
3So the sparkover of high-voltage load needs the long time just can be delivered to N
3, promptly be reflected to the elementary of transformer, and the quick charge meeting of voltage resonant circuit in time replenishes the energy of this sparkover loss, the short circuit current that makes sparkover cause can not be delivered on the primary circuit of transformer.
Aspect in addition, K switch
1, K
2Operating voltage be the end through the 100HZ of filtering direct voltage+E, whenever+E in zero passage place, K switch
1, K
2Can turn-off voluntarily.Pass to primary when load is short-circuited, automatically shut down K at the zero passage place of+E
1, K
2, and after zero passage, recover operate as normal.Therefore say that the anti-sparkover ability of the DC high-voltage power supply of present embodiment is very strong, even we can say that also this power supply does not add the sparkover for a long time of any safeguard measure and can not cause power supply to damage yet.
Present embodiment power technology parameter
1, direct-current working volts 50-200V
2, working direct current 10A
3, high pressure output voltage-20--120KV
4, high pressure output current 5-20MA
5, operating frequency 5-20KHZ
6, voltage resonance frequency 400-800KHZ
8, power supply conversion efficiency＞90%
7, working method is continuous
9, control mode manually, automatically
10, overall dimension, weight (mm, kg)
Low voltage control part 600 * 340 * 250/30kg
High-pressure section 670 * 350 * 350/50kg
11, mounting means low pressure-high pressure common cable
5-50 rice
Low-pressure section and high score are
Wall-hanging installation
Claims (4)
- Controllable silicon high-frequency high-voltage direct-current power supply is characterized in that:(1), alternating voltage is from 1,2 ends inputs and pass through capacitor C 0-C nCarry out combinatorial regulation, mechanical switch K 0-K nBe manual voltage regulation configuration switch, J 0-J nMechanical switch or use bidirectional triode thyristor is implemented the alternating voltage regulation and control by automatic control circuit;
- (2), the regulation and control alternating voltage enters rectifier bridge through 3,4 ends, rectifier bridge is that fast recovery diode is formed, its function also will provide the quick path of the current of commutation except that AC rectification, rectifier bridge four arms piezo-resistance R in parallel 2-R 5, the dc pulse moving voltage of rectification output 100HZ non-filtered;
- (3), 5,6 end 100HZ dc pulse moving voltages are given reverse-blocking tetrode thyristor K by a, b, the c of transformer T at 3 1, K 2Power supply, switch provides trigger impulse by TL494 dedicated PWM integrated circuit.Reverse-blocking tetrode thyristor K 1, K 2The change of current is to utilize coil N 3With capacitor C in the many times of booster circuits 1-C 8Energy storage carries out work.K 1, K 2Switching frequency 5-20KHZ, the high-frequency electrical pulses that is modulated into 500KHZ by parallel resonance is pressed to many voltage-multiplying circuits provides rechargeable energy;
- (4), the 100HZ dc pulse moving voltage goes up capacitor C in parallel and R to the power supply of the b of transformer end by insurance BX and BX, the effect of capacitor C and R is the overshoot current that absorbs BX fusing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93222104 CN2185010Y (en) | 1993-08-21 | 1993-08-21 | Silicon control high frequency high voltage dc power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93222104 CN2185010Y (en) | 1993-08-21 | 1993-08-21 | Silicon control high frequency high voltage dc power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2185010Y true CN2185010Y (en) | 1994-12-07 |
Family
ID=33800782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93222104 Expired - Fee Related CN2185010Y (en) | 1993-08-21 | 1993-08-21 | Silicon control high frequency high voltage dc power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2185010Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346563C (en) * | 2004-03-25 | 2007-10-31 | 南京航空航天大学 | Isolation boost transformer of boosting induction adopting LCD non-loss absorption circuit and having coupled winding |
| CN105305794A (en) * | 2014-07-09 | 2016-02-03 | 德尔福技术有限公司 | Transient voltage protection for bridge rectifier |
| CN110034548A (en) * | 2019-04-15 | 2019-07-19 | Oppo广东移动通信有限公司 | Power supply device and test system |
-
1993
- 1993-08-21 CN CN 93222104 patent/CN2185010Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346563C (en) * | 2004-03-25 | 2007-10-31 | 南京航空航天大学 | Isolation boost transformer of boosting induction adopting LCD non-loss absorption circuit and having coupled winding |
| CN105305794A (en) * | 2014-07-09 | 2016-02-03 | 德尔福技术有限公司 | Transient voltage protection for bridge rectifier |
| CN110034548A (en) * | 2019-04-15 | 2019-07-19 | Oppo广东移动通信有限公司 | Power supply device and test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |