CN1016549B - Dynamic current control method for parallel operation of thyristors - Google Patents
Dynamic current control method for parallel operation of thyristorsInfo
- Publication number
- CN1016549B CN1016549B CN 90100031 CN90100031A CN1016549B CN 1016549 B CN1016549 B CN 1016549B CN 90100031 CN90100031 CN 90100031 CN 90100031 A CN90100031 A CN 90100031A CN 1016549 B CN1016549 B CN 1016549B
- Authority
- CN
- China
- Prior art keywords
- thyristor
- current
- pulse
- resistance
- parallel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000001960 triggered effect Effects 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 14
- 230000010365 information processing Effects 0.000 claims description 11
- 238000005070 sampling Methods 0.000 claims description 11
- 239000013078 crystal Substances 0.000 claims description 8
- 230000009183 running Effects 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract 1
- 230000003321 amplification Effects 0.000 description 6
- 238000003199 nucleic acid amplification method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 102000004245 Proteasome Endopeptidase Complex Human genes 0.000 description 2
- 108090000708 Proteasome Endopeptidase Complex Proteins 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Landscapes
- Power Conversion In General (AREA)
Abstract
The invention provides a parallel thyristor dynamic current control method. Because the internal characteristics are different, the phenomenon of uneven anode current of each thyristor can occur after the thyristors are connected in parallel, according to the method of the invention, the parallel thyristors can be triggered by adopting wide pulse of more than 15 degrees or pulse strings of more than 15 degrees, which are sent by a trigger pulse system CF, a resistance variable impedance which can change the pulse amplitude without changing the pulse liquid shape is connected in series in a control loop of a secondary side or a primary side of a pulse transformer, the dynamic process of the thyristors can be changed by manually and automatically changing the value of the impedance to achieve the aim of current sharing, and the current sharing coefficient can reach 0.9-1.0, thereby obviously improving the operating efficiency of thyristor elements.
Description
The present invention relates to the control method of thyristor parallel running electric current, particularly relate to dynamic current control method of crystal shutter tube shunt.
After the thyristor parallel connection, the element in the brachium pontis in parallel is under the identical external condition, for example load characteristic, anode voltage, cooling condition etc.But their bulk properties, for example voltage-current characteristic, open characteristic, control utmost point characteristic etc. and have nothing in common with each other, make the anode current of thyristor in parallel uneven phenomenon occur thus, thereby reduce the operational efficiency of element.In order to improve the operational efficiency of element, must adopt flow equalize technology.
Currently used current-sharing measure all is static current-equalizing method, for example adopts equalizing reactor, selects the close thyristor element of voltage-current characteristic and forms brachium pontis etc.But effect in practice is unsatisfactory.Current stabilizing factor can only reach 0.7～0.85.
Owing to there is not gratifying flow equalize technology, so when design circuit, always manage to avoid the parallel running of thyristor element, under the situation in parallel of having to,, often to from a large amount of thyristor elements, select the close element parallel connection of voltage-current characteristic as far as possible in order to save the equalizing reactor of trouble.But this selection is not always possible.
In order to address the above problem, the invention provides a kind of thyristor element parallel running dynamic current control method.
According to the present invention, the dynamic process of thyristor parallel kinematic can freely be controlled under given conditions.The result of this control makes the big element of quiescent current have the long time to be in the dynamic process.In this process, the electric current of this element does not almost have direct relation with anode drop.Because it is less to flow through the electric current of element in this process, forces the element in parallel with it to flow through bigger electric current,, just return to the state of big electric current in case this element finishes dynamic process.Because the brachium pontis load is constant, at this moment forces the element in parallel with it to enter the small electric stream mode.Under this condition, the dynamic process of this element can be regulated as required, also can artificially control between its little Current Zone, thereby change the interelement average current relations of distribution in parallel in the angle of flow scope, has adjusted interelement equal stream mode in parallel.
Essence of the present invention is that the load current that the big element of quiescent current is flow through is little in dynamic process, and the little element of quiescent current flows through bigger load current at one time, and the average current that makes element in parallel in angle of flow scope is near equating or equal fully.
According to method of the present invention, broad pulse more than 15 ° or the pulse train more than 15 ° that employing is sent by the CF of trigger impulse system, thyristor is triggered, one of series connection can change pulse amplitude and not change the resistive variableimpedance of impulse waveform in the control loop of the former limit of pulse transformer or secondary, by manually or automatically changing the value of this resistive variableimpedance, change the dynamic process of thyristor element, make thyristor element in parallel enter equal stream mode.
According to method of the present invention, when needs during, unnecessary element is carried out strict selection with the thyristor parallel running, just can make current stabilizing factor reach 0.9～1.0.
Above and other objects of the present invention, novel characteristic and various advantage can obtain more detailed, clearer explanation by examples of implementation given in the following accompanying drawing.The accompanying drawing of these most preferred embodiments is:
Fig. 1 controls the method schematic diagram of the dynamic current of two thyristors in parallel for adopting potentiometer.
Fig. 2 is for adopting the method schematic diagram of adjustable two the thyristor dynamic currents in parallel of transistor controls of base bias current potential.
Fig. 3 is for carrying out information processing according to the conducting electric current that measures, changes series impedance in the control utmost point loop automatically and the method schematic diagram of two the thyristor element dynamic currents in parallel that automatically adjust.
Fig. 4 is a plurality of thyristor elements automatic current equalizing method schematic diagrams when in parallel:
As shown in Figure 1, in the thyristor elements T of two parallel connections
1, T
2The control utmost point potentiometer W that connects respectively
1And W
2The other end of these two potentiometers directly is connected with the CF of pulse-triggered system respectively, change the CF of pulse-triggered system by the resistance that changes potentiometer and present the current value of control impuls, thereby the dynamic process of change thyristor element reaches current-sharing to thyristor.
Adjustment process is performed such, and makes two potentiometer W earlier
1, W
2Resistance be equal to zero; W
1=W
2=0, at this moment measure two thyristor T in parallel
1, T
2Anode current.According to measurement result, the resistance of the control utmost point series connection potentiometer of that thyristor element that increase and anode current are big, measure the current value of two thyristors simultaneously, when the anode current mean value of two thyristors reaches equal or approaching equating, just can think that thyristor element in parallel has entered equal stream mode.
Also can be two potentiometer W
1And W
2Be connected on the former limit of the pulse transformer in the pulse-triggered system, so as isolated high-voltage, assurance adjustment personnel's personal safety.
Fig. 2 is another embodiment of the invention.As shown in Figure 2, two variable potentiometer W
1, W
2And resistance R
1Two transistor T R that form
1, TR
2Biasing circuit, two thyristor T in parallel
1, T
2The control utmost point be connected on respectively on these two transistorized emitters, two transistorized collector electrodes directly are connected with the secondary of the pulse transformer of the CF of pulse-triggered system.By changing the potentiometer W in the biasing circuit
1, W
2Resistance change corresponding crystal pipe TR respectively
1And TR
2Operating state, thereby reach the purpose of control thyristor dynamic process.
Another transistor T R shown in Figure 2
vBe used to control bias supply V
+The negative pole of bias supply and thyristor cathode connection V in parallel
oPoint is connected.A secondary winding B of the pulse transformer among the CF of pulse-triggered system is used for Synchronization Control bias supply V
+The time of dropping into.As trigger impulse from triggering system CF when thyristor is presented, transistor T R
vJust can obtain base stage control voltage simultaneously and saturated, at this moment bias supply V
+To transistor T R
1And TR
2Biasing circuit provide electric current, the operating state that these two transistors is entered into need.
Regulate two potentiometer W
1, W
2, make two transistor T R
1And TR
2Just enter saturation condition, measured two thyristor T then
1, T
2Anode current, adjust the transistor bias circult of that big thyristor element correspondence of anode current, change corresponding potentiometer resistance, make transistor enter the amplification operating state, the anode current mean value of this thyristor reduces thereupon, when the anode current mean value of two thyristor elements reaches equal or approaching equating, adjust and finish.
In this embodiment, also can be with transistor T R
1, TR
2Be connected on the former limit of the pulse transformer of triggering system CF.
Embodiment shown in Figure 3 can be used for adjusting automatically the anode current of two thyristor elements, makes them enter best all stream modes.As shown in Figure 3, here adopt two control channels, each control channel all is made up of interconnective sampling section and amplifier section (also being the information processing part), and the sampling section of first control channel is by the current transformer CT that is connected the thyristor negative electrode, rectifying part and two inverting amplifier F
11, F
12And resistance R
12, R
13, R
14Form Deng interconnecting, rectifying part wherein is by diode D
11, D
12, resistance R
11, capacitor C
1Interconnect and form; Amplifier section is by information processing integrator F
13Form with variableimpedance two parts, wherein variableimpedance bias current potentiometer W
1, input resistance R
15And transistor T R
1With diode D
13, resistance R
16Form.Mode and first passage of second passage formation are just the same, and its sampling section is by current transformer CT
2, rectifying part and amplifier F
21, F
22And resistance R
22, R
23, R
24Form Deng interconnecting, rectifying part wherein is by diode D
21, D
22, resistance R
21, capacitor C
2Interconnect and form; Amplifier section is by information processing integrator F
23Connect into variableimpedance two parts, wherein variableimpedance is by bias current potentiometer W
2, input resistance R
25And transistor T R
2With diode D
23, resistance R
26Form.
The control utmost point of the thyristor of two parallel connections is connected on respectively on two transistorized emitters, and transistorized collector electrode directly connects in the output pulse of triggering system CF and (promptly is connected secondary).
Two capacitor C
1, C
2Depositing T respectively
1, T
2The information of anode current, amplifier F
11, F
21Output output and respective electrical container on anti-phase anode current information, two other amplifier F
12, F
22Then export in-phase information.
At initial time, the thyristor T of two parallel connections
1, T
2All there is not anode current, so each amplifier F
11～F
23Output all should be zero.Adjust two potentiometer W
1, W
2, make two transistor T R
1, TR
2Just entered the saturation region.
After the thyristor variable flow device put into operation, first passage was at capacitor C
1Be upsampled to thyristor T
1Anode current information, this information is through F
11, F
12Twice anti-phase amplification is with capacitor C
1On the information homophase, same amplitude is then with second channel capacitor C
2The thyristor T that samples
2Anode current information is through inverting amplifier F
21Information after the amplification is carried out addition, and its difference is delivered to information processing integrator F
13Carry out integration.When the input difference is zero, F
13Being output as zero changes; When the input difference is timing, F
13Be output as negative the rising; When the input difference is negative, F
13Just be output as and rise.
Second tunnel integrator F
23The situation of input, output procedure and first passage similar.
As thyristor T
1Anode current greater than another thyristor T
2Anode current the time, first tunnel integrator F
13The input difference for just, it is output as negative the rising.This negative output has been offset by potentiometer W
1The forward bias current of determining makes the transistor T R that constitutes variableimpedance
1Base current reduce, thereby transistor T R
1Withdraw from the saturation region, enter the amplification operating state.Such variation makes transistor T R
1Emitter current reduce, thereby thyristor T
1Trigger current reduce, the result makes thyristor T
1Anode current mean value reduces.Thyristor T
1Anode current reduce after, make capacitor C
1On sampled value reduce.Such variation is up to integrator F
13Input just finishes when being zero.F
13Input change to difference value of zero from positive difference, self-regulating process finishes.At this moment F
13Output automatic stabilisation on some negative output level.
Simultaneously, the integrator F of second passage
23Be input as negative difference, it just is output as rises, W has been strengthened in the output of this forward
2Forward bias current, make transistor T R
2Enter dark saturation region, so thyristor T
2Trigger current constant.
When above-mentioned self-regulating process finishes, thyristor T
1And T
2Automatically enter into equal stream mode by uneven stream mode.
Transistor T R among Fig. 3
vWith winding B also is to be used for controlling bias supply V
+, its method of attachment and action principle and embodiment shown in Figure 2 are identical.
Such automatic regulating system also can be configured in the former limit of pulse transformer, and effect is identical.
Fig. 4 is full implementation scheme of the present invention, the current-sharing automatic control system during for a plurality of thyristor parallel running, n the thyristor T that established this system's parallel connection
1, T
2... T
n, n control channel correspondingly is set, each control channel is formed the sampling section cy among Fig. 4 by sampling section cy and amplifier section FD
2..., cy
n26S Proteasome Structure and Function and Cy
1Just the same; Amplifier section FD
2... FD
n26S Proteasome Structure and Function and FD
1Just the same.
The sampling section of the individual passage of the i(1≤i≤n) is by current transformer CT
iRectifying part, amplifier F
11, F
12And resistance R
I2, R
I3, R
I4Deng composition, wherein rectifying part is by diode D
I1, D
I2, resistance R
I1, electric capacity
1, interconnect and form.Amplifier section is by information processing integrator F
I3Connect into variableimpedance two parts, wherein variableimpedance is by bias current potentiometer W
1, input resistance R
I5And transistor T R
4With diode D
13, resistance R
16Form.
The thyristor T of individual parallel connection of the i(1≤i≤n)
iThe control utmost point be connected on the 1st transistor T R
iEmitter on, transistorized collector electrode directly connects the output pulse (being secondary) to pulse trigger CF.
As shown in Figure 4, in the dynamic current equalizing device of polycrystalline brake tube parallel connection, except a said n control channel, also be provided with a 1/n amplifier F
1/nThis amplifier input terminal is the anti-phase information of each thyristor element current, is output as the 1/n information of each element anode current sum, and promptly the arithmetic mean of each element anode current also is the desirable output current value of each element, if thyristor T
1(anode current of 1≤i≤n) equals this arithmetic mean, then F just
I3Input and output be zero.Work as T
iAnode current during less than this arithmetic mean, amplifier F then
13Be input as negatively, just be output as, make corresponding crystal pipe TR
1Deepen saturation; Work as T
iAnode current during greater than this arithmetic mean, amplifier then
I3Just be input as, be output as negatively, the negative voltage of output is offset drift potential device W
iThe drift current value, make TR
iEnter magnifying state, reduce the pulse amplitude of sending here by pulse trigger CF, thereby change thyristor T
iConducting state, reduce the anode current value, reach above-mentioned arithmetic mean until this value, promptly reach equal stream mode.
In the embodiment shown in Fig. 4, be provided with control bias supply V
+Transistor T R
v, the negative pole of this bias supply and thyristor cathode connection V in parallel
oPoint links to each other.A secondary winding B of the pulse transformer of pulse trigger CF is used for Synchronization Control bias supply V
+The time of dropping into.As trigger impulse when CF is fed to thyristor, transistor T R
vJust can obtain base stage control voltage simultaneously and saturated, at this moment bias supply V
+To each transistor T R
iBiasing circuit provide electric current, the operating state that each transistor is entered into need.
As shown in Figure 4, n capacitor C
1, C
2..., C
nDepositing n thyristor T respectively
1, T
2..., T
nAnode current information, n amplifier F
11, F
21..., F
N1Output output and respective electrical container on anti-phase anode current information, n amplifier F in addition
12, F
22..., F
N2Then export in-phase information.
At initial time, this n thyristor T in parallel
1, T
2..., T
nAll there is not anode current, so each amplifier F
11..., F
N3Output all should be zero.Adjust n potentiometer W
1, W
2..., W
nMake n transistor T R respectively
1, TR
2..., TR
nJust entered saturation condition, later adjustment process will be carried out automatically.The same with the situation of two thyristor parallel connections, after the thyristor variable flow device puts into operation, the 1st channel capacitor C
iBe upsampled to thyristor T
iAnode current information, this information via F
I1, F
I2Twice anti-phase amplification is with capacitor C
iOn the information homophase, same amplitude is then with 1/n amplifier F
1/nOutput, promptly the arithmetic mean of the information of the anode current information of each thyristor element after inverting amplifier amplifies compares, its difference is delivered to information processing integrator F
I3Carry out integration, F when the input difference is zero
I3Output is zero variation; When the input difference is timing, F
I3Be output as negative the rising; When the input difference is negative, F
I3Just be output as and rise.
As thyristor T
iAnode current during greater than the arithmetic mean of the anode current of each thyristor, this tunnel integrator F then
I3The input difference for just, it is output as negative the rising, this negative output has been offset by potentiometer W
iThe forward bias current of determining makes the transistor T R that constitutes variableimpedance
iBase current reduce, thereby transistor T R
iWithdraw from the saturation region, enter the amplification operating state.Such variation makes transistor T R
iEmission current reduce, thereby thyristor T
iTrigger current reduce; Make thyristor T
iAnode current mean value reduce.At thyristor T
iAnode current reduce after, make capacitor C
iOn sampled value reduce.Such variation is performed until integrator F
I3Input just finishes when being zero.F
I3The input value of input change to difference value of zero from positive difference, the self-regulating process of this passage finishes, each thyristor enters equal stream mode.
Such automatic regulating equipment also can be configured in the former limit of pulse transformer, and effect is identical.
Claims (5)
1, a kind of dynamic current control method of crystal shutter tube shunt in the circuit of being formed by thyristor in parallel and the CF of pulse-triggered system, it is characterized in that adopting the broad pulse more than 15 ° or the pulse train more than 15 ° that send by the CF of trigger impulse system that thyristor in parallel is triggered, one of series connection can change pulse amplitude and not change the resistive variableimpedance of impulse waveform in the control loop on the secondary of pulse transformer or former limit, change triggering system CF by the value that manually or automatically changes this impedance and present the current value of control impuls, thereby change the dynamic process of thyristor element and make the thyristor element enter equal stream mode to thyristor.
2, the described thyristor parallel running of a kind of claim 1 state current control method is characterized in that the thyristor T two parallel connections
1, T
2The control utmost point potentiometer W that connects respectively
1, W
2, the other end of these two potentiometers directly is connected with the CF of pulse-triggered system, by manual change potentiometer W
1, W
2Resistance change the dynamic process of thyristor element and make the thyristor element reach current-sharing.
3, the described dynamic current control method of crystal shutter tube shunt of a kind of claim 1 is characterized in that two variable potentiometer W
1, W
2With two resistance R
1, R
2Form two transistor T R respectively
1, TR
2Biasing circuit, two thyristor T
1, T
2The control utmost point be connected on said two transistor T R respectively
1, TR
2Emitter on, said transistorized collector electrode is directly connected to the secondary or the former limit of the pulse transformer of the CF of pulse-triggered system, by the potentiometer W in the said biasing circuit of manual change
1, W
2Resistance change corresponding crystal pipe TR respectively
1, TR
2Operating state; With another transistor T R
vControl bias supply, the negative pole of this bias supply and the cathode connection V of thyristor in parallel.Point is connected; A secondary winding B with the pulse transformer among the said pulse-triggered CF of system comes Synchronization Control bias supply V, the time of input; When the anode current of said two thyristor elements reached equal or approaching equating, adjustment process finished.
4, the described control method of a kind of claim 1 is characterized in that the thyristor element of two parallel runnings respectively has a control channel, and each control channel all is made up of interconnective sampling section and enlarging section branch; The sampling section of first control channel is by the current transformer CT that is connected the thyristor negative electrode
1, rectifying part and two inverting amplifier F
11, F
12And three resistance R
12, R
13, R
14Form Deng interconnecting; Said rectifying part is by two diode D
11, D
12, resistance R
11, capacitor C
1Interconnect and form; Said amplifier section is by information processing integrator F
13Form with variableimpedance two parts, this variableimpedance is by bias current potentiometer W
1, input resistance R
15And transistor T R
1With diode D
13, resistance
16Form; The sampling section of second control channel is by the current transformer CT that is connected the thyristor negative electrode
2, rectifying part and two inverting amplifier F
21, F
22And three resistance R
22, R
23, R
24Form Deng interconnecting; Said rectifying part is by two diode D
21, D
22, resistance R
21, capacitor C
2Interconnect and form; Amplifier section is by information processing integrator F
23Connect into variableimpedance two parts, this variableimpedance is by bias current potentiometer W
2, input resistance R
25And transistor T R
2With diode D
23, resistance R
26Form; The control utmost point of said thyristor in parallel is connected on two transistor T R respectively
1, TR
2Emitter on, this transistorized collector electrode directly connects the secondary output to triggering system CF, with another transistor T R
vControl bias supply V
+, the negative pole of this bias supply and the anode connection V of thyristor in parallel
oPoint links to each other, and comes Synchronization Control bias supply V with a secondary winding B of the pulse transformer among the said pulse-triggered CF of system
+The time of dropping into; Adjust said bias current potentiometer W
1, W
2, make two transistor T R
1, TR
2Just entered the saturation region, later adjustment process will be carried out automatically.
5, the described dynamic current control method of crystal shutter tube shunt of a kind of claim 1 is characterized in that controlling n thyristor T in parallel automatically with n control channel
1, T
2... T
nDynamic current, each control channel is formed by sampling section CY and amplifier section FD; The sampling section of the individual passage of the i(1≤i≤n) is by the current transformer CT that is connected the thyristor negative electrode
1, rectifying part is by two amplifier Fi
1, F
I2And three resistance R
12, R
13, R
14Deng composition, said rectifying part is by two diode D
I1, D
I2, resistance R
11, capacitor C
1Interconnect and form; Said amplifier section is by information processing integrator F
I3Connect into variableimpedance two parts, this variableimpedance is by bias current potentiometer W
i, input resistance R
I5And transistor T R
iWith diode D
I3, resistance R
16Interconnect and form; Thyristor T
iThe control utmost point be connected on transistor T R
1Emitter on, this transistorized collector electrode directly connects on pulse trigger CF; 1/n amplifier F
1/nInput be the anti-phase information of said each thyristor element current, be output as the 1/n information of each element anode current sum, connect each information processing integrator F respectively
I3; With another one transistor T R
vControl bias supply V
+, the negative pole of this bias supply and the cathode connection V of thyristor in parallel
oPoint connects; A secondary winding B of the pulse transformer of pulse trigger CF is used for Synchronization Control bias supply V
+The time of dropping into; Adjust each potentiometer W
i, make corresponding thyristor TR respectively
iJust entered saturation condition, later adjustment process will be carried out automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90100031 CN1016549B (en) | 1990-01-08 | 1990-01-08 | Dynamic current control method for parallel operation of thyristors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90100031 CN1016549B (en) | 1990-01-08 | 1990-01-08 | Dynamic current control method for parallel operation of thyristors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1043998A CN1043998A (en) | 1990-07-18 |
| CN1016549B true CN1016549B (en) | 1992-05-06 |
Family
ID=4876433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90100031 Expired CN1016549B (en) | 1990-01-08 | 1990-01-08 | Dynamic current control method for parallel operation of thyristors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016549B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097924B (en) * | 2011-02-11 | 2014-01-01 | 华为技术有限公司 | Drive control circuit for shunt-wound synchronous rectification tubes and switching power supply |
| US10340732B2 (en) * | 2015-12-04 | 2019-07-02 | Schneider Electric It Corporation | Automatic UPS bypass load sharing |
| US10630104B2 (en) | 2017-04-13 | 2020-04-21 | Schneider Electric It Corporation | Automatic current balancing for power systems |
| CN116599328B (en) * | 2023-07-17 | 2023-12-08 | 核工业西南物理研究院 | Module, system and method for parallel current sharing real-time adjustment of thyristor power bridge arm |
-
1990
- 1990-01-08 CN CN 90100031 patent/CN1016549B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1043998A (en) | 1990-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1218461C (en) | Current mode DC/DC inverter possessing controllable output impedance | |
| CN1201470C (en) | DC-DC converter of synchronous rectification type with improved current sensing | |
| CN87101231A (en) | Electrical power transfer apparatus | |
| CN109831262B (en) | Intelligent low temperature stores up grain system signal calibration circuit | |
| DE10061563A1 (en) | Method and device for switching power semiconductors on and off, in particular for speed-variable operation of an asynchronous machine, operation of an ignition circuit for gasoline engines, and switched-mode power supply | |
| CN107623968A (en) | Line voltage compensation circuit, LED drive system and driving method | |
| DE2737796C2 (en) | Circuit arrangement for processing video signals | |
| CN1016549B (en) | Dynamic current control method for parallel operation of thyristors | |
| US3671835A (en) | Motor speed control with droop compensation | |
| US3582807A (en) | Amplifier gain control circuit including diode bridge | |
| JP2828734B2 (en) | Switching device for transferring power between two power sources and method for controlling a switching device in the device | |
| CN113597733A (en) | DC voltage output circuit and method | |
| DE60000626T2 (en) | Circuit arrangement with parallel error detection | |
| DE3200478A1 (en) | "CIRCUIT ARRANGEMENT FOR AN IMAGE DISPLAY ARRANGEMENT FOR GENERATING A SAW TOOTH-SHAPED HORIZONTAL DEFLECTION CURRENT" | |
| EP0980141A1 (en) | Control circuit for a semiconductor component | |
| KR900008886B1 (en) | Transistor driving circuit | |
| CN214380661U (en) | Power supply circuit | |
| CN211321234U (en) | H-bridge rapid linear adjustment driving circuit in probe power supply | |
| CN1577202A (en) | Feedback circuit for multi-channel output switch electric source and realizing method | |
| CN110207836A (en) | A kind of single-photon detector and its high-voltage high-speed adjust circuit | |
| CN212435583U (en) | Shared output voltage adjustable circuit | |
| CN218335746U (en) | Current-limiting protection circuit and switching power supply | |
| SU949647A1 (en) | Versions of method of pulse stabilization of dc voltage of voltage stabilizer | |
| CN113852278A (en) | Accurate voltage regulating circuit of wide range output | |
| Jellison Jr et al. | A simple implementation of a power supply for constant phototube current in light modulation spectroscopy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| 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 |