CN207504783U - A kind of pulse voltage generating means - Google Patents
A kind of pulse voltage generating means Download PDFInfo
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- CN207504783U CN207504783U CN201721631585.2U CN201721631585U CN207504783U CN 207504783 U CN207504783 U CN 207504783U CN 201721631585 U CN201721631585 U CN 201721631585U CN 207504783 U CN207504783 U CN 207504783U
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Abstract
The utility model discloses a kind of pulse voltage generating means, wherein described device includes：Transformer；First AC/DC conversion circuits, exchange side are connect with the high-pressure side of the transformer；Storage capacitor is connect with the DC side of the first AC/DC conversion circuits, for storing electric energy；Charge/discharge control circuit, it is in parallel with the both ends of the storage capacitor, for the storage capacitor to be controlled to discharge to generate high-voltage pulse.The utility model sets storage capacitor in the high-pressure side of transformer, storage capacitor electric discharge is controlled so as to generate high-voltage pulse by charge/discharge control circuit, is avoided by transformer induction changes of magnetic field so that the high-voltage pulse frequency that high-pressure side is exported is restricted is difficult to improve and the problem of the rising edge of high-voltage pulse and longer failing edge time.
Description
Technical field
The utility model is related to signal generator technical fields, and in particular to a kind of pulse voltage generating means.
Background technology
Pulse voltage technology is referred to energy after relatively long time storage, when extremely short in the form of electric energy
Interior quick release, so as to generate high-voltage pulse.The essence of pulse voltage technology is to carry out pulse energy in time scale
Compression is exported with obtaining the peak voltage of (nanosecond to hundred Microsecond grades) in a short time.To have pulse voltage technology
Preferable application effect often requires that the rising edge of pulse voltage and failing edge time are shorter, and pulse width is smaller.
The prior art can obtain higher pulse voltage value by step-up transformer, and used pulse voltage occurs
For device as shown in Figure 1, in direct voltage source both ends parallel connection half-bridge circuit, the output terminal of half-bridge circuit connects the low pressure of transformer
Side, the high-pressure side of transformer is as pulse voltage output terminal, by four controllable switches S10, S20, S30 controlling half-bridge circuit
The double polarity pulse signal of half-bridge circuit output low pressure is controlled with open and close time of S40.For example, control controllable switch
When S10 and S40 closures, S20 and S30 are disconnected, it can cause the current direction of step down side as shown by the arrows in Figure 1；Control
When controllable switch S10 and S40 processed are disconnected, S20 and S30 are closed, it can cause arrow in the current direction and Fig. 1 of step down side
Direction shown in head is opposite.When the low-pressure side of step-up transformer passes to the electric current of alternation, high voltage side of transformer can sense generation electricity
Pressure.The capacitance C of direct voltage source both ends parallel connection is used to filter in Fig. 1.
However, the regular hour is needed due to sensing changes of magnetic field in transformer, the high pressure that high voltage side of transformer is exported
The frequency of pulse, which is restricted, to be difficult to improve, and the rising edge of high-voltage pulse and failing edge time are longer.
Invention content
In view of this, the utility model embodiment provides a kind of pulse voltage generating means, to solve high-voltage pulse frequency
Rate, which is restricted, to be difficult to improve and the problem of the rising edge of high-voltage pulse and longer failing edge time.
The utility model first aspect provides a kind of pulse voltage generating means, including：Transformer；First AC/DC turns
Circuit is changed, exchange side is connect with the high-pressure side of the transformer；Storage capacitor is straight with the first AC/DC conversion circuits
Side connection is flowed, for storing electric energy；Charge/discharge control circuit, it is in parallel with the both ends of the storage capacitor, for controlling the energy storage
Capacitance discharges to generate high-voltage pulse.
Optionally, the charge/discharge control circuit includes：First controllable switch S1, the second controllable switch S2, third are controllably opened
Close S3, the 4th controllable switch S4, discharge resistance and the first controller；The S1 connects with the S2, and the S3 and S4 goes here and there
Connection；One end of the discharge resistance is connected between the S1 and the S2, and the other end is connected between the S3 and the S4；
Output terminal of the both ends of the discharge resistance as the charge/discharge control circuit；First controller for control the S1,
The S2, the S3 and the S4 are closed or disconnect.
Optionally, described device further includes：2nd AC/DC conversion circuits, exchange side are connect with power grid；DC/AC is converted
Circuit, DC side are connect with the DC side of the 2nd AC/DC conversion circuits, exchange side and the low-pressure side of the transformer
Connection.
Optionally, the DC/AC conversion circuits include：5th controllable switch S5, the 6th controllable switch S6, the 7th controllably open
Close S7, the 8th controllable switch S8 and second controller；The S5 connects with the S6, and the S7 connects with the S8；The DC/
One end of AC conversion circuit output terminals is between the S5 and the S6, and the other end is between the S7 and the S8；Institute
Second controller is stated for the S5, the S6, the S7 and the S8 to be controlled to be closed or disconnect.
Optionally, the magnetic core of the transformer includes at least two high-tension coils；Each high-tension coil is correspondingly connected with one
First AC/DC conversion circuits have been correspondingly connected at least one storage capacitor and charge/discharge control circuit；The charge/discharge control circuit
Output terminal of the both ends as the pulse voltage generating means after output terminal parallel connection.
Optionally, the transformer includes at least two magnetic cores；The low-pressure side of each magnetic core is correspondingly connected with a DC/AC and turns
Circuit is changed, the input terminal of multiple DC/AC conversion circuits is connected in parallel to the output terminal of the 2nd AC/DC conversion circuits.
Optionally, the transformer includes at least two magnetic cores；The input terminal parallel connection of the low-voltage side coil of each magnetic core connects
It is connected to the output terminal of DC/AC conversion circuits.
Optionally, controllable switch uses Si-MOSFET or SiC-MOSFET.
The pulse voltage generating means that the utility model embodiment is provided, in the high-pressure side of transformer setting energy storage electricity
Hold, storage capacitor electric discharge is controlled to be avoided so as to generate high-voltage pulse due to transformer induction magnetic field by charge/discharge control circuit
Variation is so that the high-voltage pulse frequency that is exported of high-pressure side is restricted and is difficult to improve and the rising edge of high-voltage pulse and decline
Along the time it is longer the problem of.
Description of the drawings
Can be more clearly understood the feature and advantage of the utility model by reference to attached drawing, attached drawing be schematically without
It is interpreted as carrying out any restrictions to the utility model, in the accompanying drawings：
Fig. 1 shows the circuit diagram of existing pulse voltage generating means；
Fig. 2 shows a kind of functional block diagrams of the pulse voltage generating means according to the utility model embodiment；
Fig. 3 shows the functional block diagram of another pulse voltage generating means according to the utility model embodiment；
Fig. 4 shows the functional block diagram of another pulse voltage generating means according to the utility model embodiment；
Fig. 5 shows the functional block diagram of another pulse voltage generating means according to the utility model embodiment；
Fig. 6 shows the functional block diagram of another pulse voltage generating means according to the utility model embodiment；
Fig. 7 shows the flow chart of a kind of pulse voltage method for generation implemented according to the utility model；
Fig. 8 shows the flow chart of another pulse voltage method for generation implemented according to the utility model；
Fig. 9 shows a kind of functional block diagram of pulse voltage generating means according to the utility model embodiment；
Figure 10 shows the functional block diagram of another pulse voltage generating means according to the utility model embodiment.
Specific embodiment
Purpose, technical scheme and advantage to make the utility model embodiment are clearer, new below in conjunction with this practicality
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, those skilled in the art's all other embodiments obtained without creative efforts, belongs to this reality
With novel protected range.
Embodiment one
Fig. 2 shows a kind of functional block diagrams of the pulse voltage generating means according to the utility model embodiment.The device
Including transformer 10, the first AC/DC conversion circuits 20, storage capacitor 30 and charge/discharge control circuit 40.
The low-pressure side of transformer 10 applies relatively low square-wave voltage.The exchange side and transformation of first AC/DC conversion circuits 20
The high-pressure side connection of device 10.Storage capacitor 30 is a kind of device (can also be referred to as energy-storage capacitor) comprising capacitance, is made
With electric energy is mainly stored, different from the filter action of simple capacitor part.30 and the first AC/DC conversion circuits 20 of storage capacitor
DC side connection.Charge/discharge control circuit 40 is in parallel with the both ends of storage capacitor 30, for storage capacitor 30 being controlled to discharge with production
Raw high-voltage pulse.
Above-mentioned pulse voltage generating means sets storage capacitor in the high-pressure side of transformer, passes through charge/discharge control circuit control
Storage capacitor electric discharge processed is avoided so as to generate high-voltage pulse since transformer induction changes of magnetic field is so that high-pressure side was exported
High-voltage pulse frequency, which is restricted, to be difficult to improve and the problem of the rising edge of high-voltage pulse and longer failing edge time.
Embodiment two
Fig. 3 shows the functional block diagram of another pulse voltage generating means according to the utility model embodiment.With reality
Applying example one, difference lies in charge/discharge control circuit 40 includes the first controllable switch S1, the second controllable switch S2, third controllable switch
S3, the 4th controllable switch S4, discharge resistance R and the first controller 41.Wherein, S1 connects with S2, and S3 connects with S4, discharge resistance
One end of R is connected between S1 and S2, and the other end is connected between S3 and S4, forms H-bridge circuit.Make at the both ends of discharge resistance R
For the output terminal of charge/discharge control circuit 40, also exported the voltage at discharge resistance R both ends as high-voltage pulse.First controller
41 are used to that S1, S2, S3 and S4 to be controlled to be closed or disconnect so that output voltage can be bipolarity, i.e. output voltage both can be
Positive voltage, or negative voltage.
Since the frequency of network voltage is relatively low, it is difficult to if the low-pressure side for being directly connected to transformer quick to storage capacitor 30
Charging, so as to which the pulse voltage generating means is difficult to export the high voltage pulse of higher-frequency.For this purpose, the device can also include second
AC/DC conversion circuits 50 and DC/AC conversion circuits 60.The exchange side of 2nd AC/DC conversion circuits 50 is connect with power grid.DC/AC
The DC side of conversion circuit 60 is connect with the DC side of the 2nd AC/DC conversion circuits 50, exchange side and the low pressure of transformer 10
Side connects.The network voltage of low frequency is first converted to by DC voltage by the 2nd AC/DC conversion circuits, then passes through DC/AC again
Conversion circuit is converted to the square-wave voltage of higher-frequency, to be embodied as storage capacitor quick charge.
As a kind of optional embodiment of the present embodiment, as shown in figure 3, DC/AC conversion circuits 60 include the 5th controllably
Switch S5, the 6th controllable switch S6, the 7th controllable switch S7, the 8th controllable switch S8 and second controller 61.S5 connects with S6,
S7 connects with S8, and one end of 60 output terminal of DC/AC conversion circuits is between S5 and S6, and the other end is between S7 and S8.The
DC voltage can be converted to unipolarity or ambipolar by two controllers 61 for S5, S6, S7 and S8 to be controlled to be closed or disconnect
Square-wave voltage exports.
As a kind of optional embodiment of the present embodiment, as shown in figure 4, the magnetic core of transformer 10 is high including at least two
Crimping circle.Each high-tension coil is correspondingly connected with a first AC/DC conversion circuit (such as 21,22 and 23), be correspondingly connected with to
A few storage capacitor (such as 31,32 and 33) and charge/discharge control circuit 40 (such as 41,42 and 43).Charge/discharge control circuit 40
Output terminal of the both ends as pulse voltage generating means after output terminal parallel connection.
As a kind of optional embodiment of the present embodiment, as shown in figure 5, transformer 10 includes at least two magnetic cores, often
The low-pressure side of a magnetic core is correspondingly connected with a DC/AC conversion circuit (such as 61 and 62), the input of multiple DC/AC conversion circuits 60
End is connected in parallel to the output terminal of the 2nd AC/DC conversion circuits 50.Alternatively, a kind of replaceable reality as the optional embodiment
Mode is applied, as shown in fig. 6, transformer 10 includes at least two magnetic cores, the input terminal parallel connection of the low-voltage side coil of each magnetic core connects
It is connected to the output terminal of DC/AC conversion circuits 60.
Optionally, Si-MOSFET or SiC-MOSFET may be used in the controllable switch in the application.Si-MOSFET or
The conducting resistance and switching loss of SiC-MOSFET are relatively low, switching frequency is higher.The experimental study of inventor shows using Si-
The rising edge for the high voltage pulse that the device is exported and failing edge time can be less than 1 μ s or 100ns during MOSFET, using Si-
The rising edge for the high voltage pulse that the device is exported and failing edge time can be less than 10ns during MOSFET.
Above-mentioned pulse voltage generating means can avoid high-voltage pulse frequency from being restricted and be difficult to improve and high-tension pulse
The problem of rising edge of punching and longer failing edge time, specifically refer to embodiment one.
Embodiment three
Fig. 7 shows the flow chart of a kind of pulse voltage method for generation implemented according to the utility model, and reality may be used
Example one or embodiment two or pulse voltage generating means described in its any one optional embodiment are applied to realize.Such as Fig. 7
Shown, this method comprises the following steps：
S10：The low-pressure side in transformer is controlled to apply square-wave voltage, square-wave voltage is turned after transformer boosts by AC/DC
Circuit conversion is changed to charge for storage capacitor into DC voltage.
S20：The control charge/discharge control circuit in parallel with storage capacitor discharges to generate high-voltage pulse.
Above-mentioned pulse voltage method for generation stores electric energy, by putting by the storage capacitor for being arranged on high voltage side of transformer
Electric control circuit control storage capacitor electric discharge is avoided so as to generate high-voltage pulse since transformer induction changes of magnetic field causes height
The high-voltage pulse frequency that is exported of pressure side, which is restricted, to be difficult to improve and the rising edge of high-voltage pulse and failing edge time are longer
The problem of.
Example IV
Fig. 8 shows the flow chart of another pulse voltage method for generation implemented according to the utility model, may be used
Pulse voltage generating means described in embodiment one or embodiment two or its any one optional embodiment is realized.The party
Difference lies in further include following steps to method with embodiment three：
S30：Obtain the voltage of storage capacitor.
S40：Judge whether the voltage of storage capacitor reaches predetermined value.When the voltage of storage capacitor reaches predetermined value, hold
Row step S50；Otherwise step S10 is continued to execute.
S50：Control stops charging for storage capacitor.Control stop for storage capacitor charging method can there are many, this
Application does not limit this.
The capacity of storage capacitor is larger, above-mentioned steps S30, S40 and S50 when the voltage of storage capacitor reaches predetermined value just
Control stops charging for storage capacitor, so as to adjust the voltage value of the high voltage pulse of final output.
Optionally, charge/discharge control circuit uses circuit structure as shown in Figure 3.Wherein, one end of S1 and one end of S3 connect
It connects.Step S20 so in embodiment three includes the following steps：
S21：The polarity of the pulse voltage exported needed for obtaining.
The demand that the polarity of the pulse voltage of required output can be input by user or other programs generate.
S22：When the pulse voltage of required output is the first polarity chron, control S1, S4 are closed and S2, S3 are disconnected and maintained
Scheduled duration, then S1, S2, S3 and S4 is controlled to disconnect.
S23：When the pulse voltage of required output is to be closed simultaneously with the first opposite polarity second polarity chron, control S2, S3
And S1, S4 are disconnected and are maintained scheduled duration, then S1, S2, S3 and S4 is controlled to disconnect.
For example, right end voltage is higher than as positive voltage using the left end voltage of discharge resistance R in Fig. 3.When the pulse of required output
Voltage be positive voltage when, then can control S1, S4 be closed and S2, S3 disconnect maintain a very short time, then control S1,
S2, S3 and S4 are disconnected, and can export positive high voltage pulse, i.e. step S22 in this way.Step S22 execution can once export
One positive high voltage pulse, optionally, step S22 can also be performed repeatedly so as to continuously export positive high voltage pulse.Step S23
Similar with step S22, those skilled in the art should be understood that step S23 accordingly, and details are not described herein.
By above-mentioned steps S21, S22 and S23, high voltage pulse or the output that can export required polarity as needed are double
The high voltage pulse of polarity additionally can continuously export high voltage pulse.
Optionally, when controlling above-mentioned controllable switch S1, S2, S3 and S4, controllable switch can be controlled to control signal
The frequency of variation, so as to control the duty ratio of the high-voltage pulse of final output.
Above-mentioned pulse voltage method for generation can avoid high-voltage pulse frequency from being restricted and be difficult to improve and high-tension pulse
The problem of rising edge of punching and longer failing edge time, specifically refer to embodiment three.
Embodiment five
Fig. 9 shows a kind of functional block diagram of pulse voltage generating means according to the utility model embodiment, the device
Can be used to implement embodiment three, either example IV or the pulse voltage described in its any one optional embodiment occur
Method.As shown in figure 9, the device includes the first control unit 10 and the second control unit 20.
First control unit 10 applies square-wave voltage for low-pressure side of the control in transformer.Square-wave voltage is through transformer liter
After pressure, DC voltage is converted by AC/DC conversion circuits and is charged for storage capacitor.
Second control unit 20 discharges to generate high-voltage pulse for the control charge/discharge control circuit in parallel with storage capacitor.
Above-mentioned pulse voltage generating means can avoid high-voltage pulse frequency from being restricted and be difficult to improve and high-tension pulse
The problem of rising edge of punching and longer failing edge time, specifically refer to embodiment three.
Embodiment six
Figure 10 shows the functional block diagram of another pulse voltage generating means according to the utility model embodiment, the dress
It puts and can be used to implement embodiment three either example IV or the pulse voltage hair described in its any one optional embodiment
Generation method.As shown in Figure 10, difference lies in further include acquiring unit 30, judging unit 40 and third control with embodiment five
Unit 50.Acquiring unit 30 is used to obtain the voltage of storage capacitor.Judging unit 40 be used for judge storage capacitor voltage whether
Reach predetermined value.Third control unit 50 is used for when the voltage of storage capacitor reaches predetermined value, and control stops as storage capacitor
Charging.
Optionally, charge/discharge control circuit uses circuit structure as shown in Figure 3.Wherein, one end of S1 and one end of S3 connect
It connects.The second control unit 20 so in embodiment five can include obtaining the control subelement 22 and second of subelement 21, first
Control subelement 23.Obtain the polarity that subelement 21 is used to obtain the required pulse voltage exported.First control subelement 22 is used
It is the first polarity chron in the pulse voltage when required output, control S1, S4 are closed and S2, S3 are disconnected and maintained scheduled duration,
S1, S2, S3 and S4 is controlled to disconnect again.For controlling, S2, S3 are closed second control subelement 23 and S1, S4 are disconnected and maintained
Scheduled duration, then S1, S2, S3 and S4 is controlled to disconnect.
Above-mentioned pulse voltage method for generation can avoid high-voltage pulse frequency from being restricted and be difficult to improve and high-tension pulse
The problem of rising edge of punching and longer failing edge time, specifically refer to embodiment three.
The utility model implementation additionally provides a kind of controller, and including memory and processor, wherein memory is stored with
Computer program, realized when which is executed by processor embodiment three either example IV or its any one can
Select the pulse voltage method for generation described in embodiment.
Although being described in conjunction with the accompanying the embodiment of the utility model, those skilled in the art can not depart from this
Various modifications and variations can be made in the case of the spirit and scope of utility model, and such modifications and variations are each fallen within by appended power
Profit is required within limited range.
Claims (8)
1. a kind of pulse voltage generating means, which is characterized in that including：
Transformer；
First AC/DC conversion circuits, exchange side are connect with the high-pressure side of the transformer；
Storage capacitor is connect with the DC side of the first AC/DC conversion circuits, for storing electric energy；
Charge/discharge control circuit, it is in parallel with the both ends of the storage capacitor, for the storage capacitor to be controlled to discharge to generate high pressure
Pulse.
2. pulse voltage generating means according to claim 1, which is characterized in that the charge/discharge control circuit includes：The
One controllable switch S1, the second controllable switch S2, third controllable switch S3, the 4th controllable switch S4, discharge resistance and the first control
Device；
The S1 connects with the S2, and the S3 connects with the S4；
One end of the discharge resistance is connected between the S1 and the S2, the other end be connected to the S3 and S4 it
Between；Output terminal of the both ends of the discharge resistance as the charge/discharge control circuit；
First controller is used to that the S1, the S2, the S3 and the S4 to be controlled to be closed or disconnect.
3. pulse voltage generating means according to claim 1, which is characterized in that further include：
2nd AC/DC conversion circuits, exchange side are connect with power grid；
DC/AC conversion circuits, DC side are connect with the DC side of the 2nd AC/DC conversion circuits, exchange side with it is described
The low-pressure side connection of transformer.
4. pulse voltage generating means according to claim 3, which is characterized in that the DC/AC conversion circuits include：The
Five controllable switch S5, the 6th controllable switch S6, the 7th controllable switch S7, the 8th controllable switch S8 and second controller；
The S5 connects with the S6, and the S7 connects with the S8；One end of the DC/AC conversion circuits output terminal is located at institute
It states between S5 and the S6, the other end is between the S7 and the S8；
The second controller is used to that the S5, the S6, the S7 and the S8 to be controlled to be closed or disconnect.
5. pulse voltage generating means according to claim 3, which is characterized in that the magnetic core of the transformer is included at least
Two high-tension coils；Each high-tension coil is correspondingly connected with a first AC/DC conversion circuit, has been correspondingly connected at least one energy storage
Capacitance and charge/discharge control circuit；Both ends after the output terminal parallel connection of the charge/discharge control circuit are filled as the pulse voltage
The output terminal put.
6. the pulse voltage generating means according to claim 3 or 5, which is characterized in that the transformer includes at least two
A magnetic core；The low-pressure side of each magnetic core is correspondingly connected with a DC/AC conversion circuit, and the input terminal of multiple DC/AC conversion circuits is simultaneously
Connection is connected to the output terminal of the 2nd AC/DC conversion circuits.
7. the pulse voltage generating means according to claim 3 or 5, which is characterized in that the transformer includes at least two
A magnetic core；The input terminal of the low-voltage side coil of each magnetic core is connected in parallel to the output terminal of DC/AC conversion circuits.
8. the pulse voltage generating means according to claim 2 or 4, which is characterized in that controllable switch uses Si-MOSFET
Or SiC-MOSFET.
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| CN201721631585.2U CN207504783U (en) | 2017-11-29 | 2017-11-29 | A kind of pulse voltage generating means |
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| CN201721631585.2U CN207504783U (en) | 2017-11-29 | 2017-11-29 | A kind of pulse voltage generating means |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107809184A (en) * | 2017-11-29 | 2018-03-16 | 苏州博思得电气有限公司 | A kind of pulse voltage generating means, method and controller |
| CN110596443A (en) * | 2019-10-23 | 2019-12-20 | 安徽理工大学 | Electrode spacing adjustable integration aquatic high voltage pulse discharge device |
| WO2023016482A1 (en) * | 2021-08-10 | 2023-02-16 | 苏州艾科脉医疗技术有限公司 | High-voltage generating circuit for catheter and ablation tool |
-
2017
- 2017-11-29 CN CN201721631585.2U patent/CN207504783U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107809184A (en) * | 2017-11-29 | 2018-03-16 | 苏州博思得电气有限公司 | A kind of pulse voltage generating means, method and controller |
| CN110596443A (en) * | 2019-10-23 | 2019-12-20 | 安徽理工大学 | Electrode spacing adjustable integration aquatic high voltage pulse discharge device |
| CN110596443B (en) * | 2019-10-23 | 2024-06-11 | 安徽理工大学 | Electrode spacing adjustable integrated underwater high-voltage pulse discharge device |
| WO2023016482A1 (en) * | 2021-08-10 | 2023-02-16 | 苏州艾科脉医疗技术有限公司 | High-voltage generating circuit for catheter and ablation tool |
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