CN105207515B - A kind of repetitive frequency pulsed power current source - Google Patents
A kind of repetitive frequency pulsed power current source Download PDFInfo
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- CN105207515B CN105207515B CN201510591452.6A CN201510591452A CN105207515B CN 105207515 B CN105207515 B CN 105207515B CN 201510591452 A CN201510591452 A CN 201510591452A CN 105207515 B CN105207515 B CN 105207515B
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Abstract
The present invention relates to technical field of pulse power, more particularly to a kind of repetitive frequency pulsed power current source.The present invention provides a kind of repetitive frequency pulsed power current source, is made of primary energy prime DC/DC or AC/DC converter, intermediate energy storage device and pulse shaping topology three parts.The present invention realizes that pulse power occurs and pulse power interval of rest primary energy automatically controlling to intermediate energy storage device charging current；Power conversion circuit is used as using buck topology of the power switch pipe on low side, circuit is simply easily achieved；Control is accurate, and dynamic response is fast；Porch is precipitous, can realize the feedback regeneration of energy；The repetition rate and pulse width of pulse power generation can be changed.
Description
Technical field
The present invention relates to technical field of pulse power, more particularly to a kind of repetitive frequency pulsed power current source.
Background technology
Impulse power electrical source is a kind of accumulation energy within a relatively long time and by the special electricity of its quick release
Source, the purpose is to improve transient power.The characteristic parameter of pulse includes voltage level, rise time etc. depending on pulse load
Demand.The pulse power of most initial is pulse, for producing high peak power in military and nuclear industry, and repeats frequency
The voltage class of the pulse power of rate is relatively low, be but widely used in food processing, therapeutic treatment, wastewater treatment, at exhaust gas
Reason, ozone manufacture, engine ignition, ion implanting, material processing etc..
There are efficiency is low, very flexible and knot for the schemes such as traditional Marx generators, magnetic pulse compression, pulse forming network
The shortcomings of structure is complicated.In today that Power Electronic Technique and power semiconductor technologies develop rapidly, switch converters are used to make
Make impulse power electrical source.Since there is capacitance-resistance or LC characteristic, current source type to open up for most pulse power application scenario
Flutter and can be used to provide pulse power.
At present pulse current source frequently with topology have：Buck topologys, Buck and bridge-type inverter series connection, synchronization Buck types
Topology and Buck-Boost topologys etc..These buck classes derive topology and usually do voltage adjusting and mistake by feedback control loop
Stream protection.The response time of control loop is more more slowly than the temporal variations of output loading porch.Therefore, power conversion lags
It can form in porch demand and when pulse starts that pulse climbing speed is slow and pulse overshoot, and the meeting in end-of-pulsing
Form pulse stretching.Importantly, control loop cannot respond input voltage and output voltage in a switch periods
Quick change, can not trace pulse load temporal variations edge.In this case, pulse current source can not just meet similar
Requirement of the application scenarios such as laser pump (ing), laser lighting to the steepness of pulse edge.
The content of the invention
For defect existing in the prior art or deficiency, the technical problems to be solved by the invention are：A kind of weight is provided
Complex frequency pulse power current source, possesses automatically controlling for intermediate energy storage device charge power, and pulse generation topological structure is simple,
The features such as control is accurate, and dynamic response is fast, and porch is precipitous, energy feedback regeneration, controllable repetition rate and pulse width.
To achieve these goals, the technical solution that the present invention takes is a kind of repetitive frequency pulsed power current of offer
Source, including primary energy transform part, intermediate energy storage device and pulse shaping topology, the primary energy transform part include becoming
Parallel operation, the first current detection circuit, voltage and current dual-loop control circuit, energy storage device, energy storage device voltage detecting circuit, it is described
Voltage and current dual-loop control circuit is used to control converter to work, and first current detection circuit is used for the voltage and current
Dual-loop control circuit provides detection energy, and the energy storage device is used to receive the energy saved and provide to come from converter, described
Energy storage device voltage detecting circuit is used to carry out voltage detecting to the energy storage device；
The intermediate energy storage device includes capacitance battle array, super capacitor and storage battery；
The pulse shaping topology includes low side buck code converters, Pulse Width Control switch, Hysteresis control circuit, the second electricity
Current detection circuit and sequential control circuit, second current detection circuit are used to provide the Hysteresis control circuit detection energy
Amount, the Hysteresis control circuit control the break-make of the low side buck code converters, and the Pulse Width Control switch includes series connection
First Pulse Width Control switchs and the second Pulse Width Control switch, the first Pulse Width Control switch and second Pulse Width Control switch
It is switched on or off by sequential control circuit control.
As a further improvement on the present invention, the low side buck code converters include main power change switch, topology electricity
Sense, fly-wheel diode, oad freewheels diode, energy feedback diode, the main power change switch are responsible for the centre
The energy of energy storage device obtains the form of energy of pulse load demand by the mode conversion of the switch on and off；The topology inductance
For energy compression of the main power change switch during energy conversion is carried out；The fly-wheel diode is used for main power
When alteration switch turns off continuous current circuit is provided to energy storage inductor；The oad freewheels diode is used for the perceptual portion for pulse load
Divide and continuous current circuit is provided, and cause load to obtain steeper porch；The energy feedback diode, is in the pulse generation phase
Between for the dump energy that is stored in inductance provide circulation path, and by the path by energy feedback into energy storage device；It is described
Oad freewheels diode is switched with first Pulse Width Control and the second Pulse Width Control switch in parallel.
As a further improvement on the present invention, first current detection circuit or second current detection circuit are
Hall current detection circuit, sampling resistor add the sample circuit of instrument amplifier, sampling resistor to add the sample circuit of current mirror.
As a further improvement on the present invention, the converter is AC/DC converters or DC/DC converters.
As a further improvement on the present invention, the energy storage device voltage detecting circuit is resistance pressure-dividing network detection circuit
Or difference ratio voltage detecting circuit.
The beneficial effects of the invention are as follows：Realize that pulse power occurs and pulse power interval of rest primary energy is stored up to centre
Energy device charging current automatically controls；Power conversion circuit is used as using buck topology of the power switch pipe on low side,
Circuit is simply easily achieved；Control is accurate, and dynamic response is fast；Porch is precipitous, can realize the feedback regeneration of energy；It can change
The repetition rate and pulse width that pulse power occurs.
Brief description of the drawings
Fig. 1 is pulse current source system schema block diagram of the present invention；
Fig. 2 is the switching sequence figure of pulse current source of the present invention；
Fig. 3 is the inductive current and load pulse current waveform figure of pulse current source of the present invention；
Fig. 4 is the oscillogram of the pulse command of pulse current source of the present invention, S1, S2 and S3；
Fig. 5 is the pulse command of pulse current source of the present invention, S1 load pulses electric current and inductive current oscillogram；
Wherein digital representation：1st, converter；2nd, the first detection circuit；3rd, energy storage device voltage detecting circuit；4th, energy storage fills
Put；5th, voltage and current double -loop control；6th, the second current detection circuit；7th, Hysteresis control；8th, timing control；9th, pulse load.
Embodiment
The present invention is further described for explanation and embodiment below in conjunction with the accompanying drawings.
The Hysteresis control circuit controls the break-make of the main power change switch
As shown in Figure 1, a kind of repetitive frequency pulsed power current source of present invention offer, including primary energy transform part,
Intermediate energy storage device and pulse shaping topology, the primary energy transform part include converter 1, the first current detection circuit 2,
Voltage and current dual-loop control circuit 5, energy storage device 4, energy storage device voltage detecting circuit 3, the voltage and current double -loop control electricity
Road 5 is used to control converter 1 to work, and first current detection circuit 2 is used to carry to the voltage and current dual-loop control circuit 5
For detecting energy, the energy storage device 4 is used to receive the energy that savings come from the offer of converter 1, the energy storage device voltage
Detection circuit 3 is used to carry out voltage detecting to the energy storage device 4；
As shown in Figure 1, the intermediate energy storage device includes capacitance battle array, super capacitor and storage battery；
As shown in Figure 1, the pulse shaping topology includes low side buck code converters, Pulse Width Control switch, Hysteresis control
Circuit 7, the second current detection circuit 6 and sequential control circuit 8, second current detection circuit 6 are used for the stagnant ring control
Circuit 7 processed provides detection energy, and the Hysteresis control circuit 7 controls the break-make of the low side buck code converters, the pulse
Controlling switch includes the first Pulse Width Control switch S2 and the second Pulse Width Control switch S3 of series connection, the first Pulse Width Control switch
S2 and second Pulse Width Control switch S3 are switched on or off by the sequential control circuit 8 control.The reality of Hysteresis control circuit
It is now detection inductive current, and by it compared with the maximum, minimum setting value of inductive current, and combine pulse command and realize
Control to master power switch pipe S1.
As shown in Figure 1, the low side buck code converters include main power change switch S1, topological inductance L, two pole of afterflow
Pipe D1, oad freewheels diode D3, energy feedback diode D2, S1 are main power change switch, and S2 and S3 are pulse shaping control
System switch, L are topological inductance, and D1 is fly-wheel diode, and D2 is energy feedback diode, and D3 is oad freewheels diode, is prevented
Due to voltage spikes caused by the inductance characteristic of connecting line is loaded when S3 is turned off.
The main power change switch S1 is responsible for the energy by the intermediate energy storage device by way of the switch on and off
Conversion obtains the form of energy of pulse load demand；The topology inductance L is used for the main power change switch S1 and is carrying out energy
Energy compression during change of variable；The sustained diode 1 is used to carry to energy storage inductor when main power change switch S1 is turned off
For continuous current circuit；The oad freewheels diode D3 is used to provide continuous current circuit for the inductive part of pulse load 9, and causes negative
Carry and obtain steeper porch；The energy feedback diode D2, it is the residue stored in inductance during pulse generation to be
Energy provide circulation path, and by the path by energy feedback into energy storage device；The oad freewheels diode D3 and institute
State the first Pulse Width Control switch S2 and second Pulse Width Control switch S3 is in parallel.Pulse shaping topology is with power tube on low side
Based on buck converter, and Pulse Width Control switch and energy feedback diode composition are accessed, with reference to timing control and stagnant ring control
System realize high dynamic response pulse power occur, have it is simple in structure, corresponding speed is fast, porch is precipitous, energy can return
The features such as feedback regeneration.
As shown in Figure 1, first current detection circuit 2 or second current detection circuit 6 are examined for Hall current
Slowdown monitoring circuit, sampling resistor add the sample circuit of instrument amplifier, sampling resistor to add the sample circuit of current mirror.
As shown in Figure 1, it can also be DC power supply that primary energy, which can be AC power, the converter 1 becomes for AC/DC
Parallel operation or DC/DC converters.Converter 1 provides energy to energy storage device, is an energy processes.Converter is detected to storage
The charging current and energy storage device terminal voltage of energy device realize the control to DC/DC or AC/DC converters, in pulse generation rank
Section, energy storage device terminal voltage will be pulled low, and promote voltage and current double -loop control to set converter automatically with maximum current to storage
Energy device provides energy, and provides energy to energy storage device according to the power demand of energy storage device in the pulse interval stage.
As shown in Figure 1, the energy storage device voltage detecting circuit is resistance pressure-dividing network detection circuit or difference ratio electricity
Press detection circuit.
External pulse instructs the time sequence control logic to three switching tubes, as shown in Figure 2.
First stage（t0-t1）：Inductive current ascent stage.Power change switch S1 and Pulse Width Control switch S2 are closed
Close, S2 is by load short circuits, and storage capacitor is only to induction charging, until inductive current reaches setting value.
Second stage (t1-t2)：Pulse current exports the stage.At the t1 moment, inductive current reaches setting value, S2 shut-offs
S3 conductings, inductive current are quickly transferred in load at the same time, and for S1 by Hysteresis control break-make, load current is equal to inductance electricity at this time
Stream, current value change between maximin.
Three phases (t2-t3)：The end-of-pulsing energy feedback stage.At the t2 moment, end-of-pulsing, all switches break
Open, load passes through D3 afterflows, and inductance L gives energy feedback to capacitance C by D1 and D2.
The pulse current waveform obtained via the above three stage is as shown in figure 3, Fig. 4, Fig. 5 give experimental result waveform
Scheme, Fig. 4 shows to be followed successively by the waveform of pulse command, S1, S2 and S3 from top to bottom, and Fig. 5 shows that being followed successively by pulse from top to bottom refers to
Make, S1 load pulses electric current and inductive current waveform.
The pulse power system Scheme Characteristics of this patent are mainly shown as：
1st, intermediate energy storage device charge power automatically controls
Primary energy and pulse power occur, by interconnecting middle energy storage device, to pass through the power to middle energy storage device
Setting is, it can be achieved that pulse power occurs and pulse power interval of rest primary energy is to intermediate energy storage device charging current
Automatically control.
2nd, pulse generation topological structure is simple
Power conversion circuit is used as using buck topology of the power switch pipe on low side, circuit is simply easily achieved.
3rd, control is accurate, and dynamic response is fast
Using hysteretic loop current control, inductive current is limited between maximum current and minimum current, can be to inductive current
Realize accurate control, while can also easily change control of the minimax current value realization to inductive current size, on the one hand
The limitation to load current is realized, while load current change can be responded, it can be achieved that and duty in single cycle
Stablize output and excellent transient response characteristic than unrelated.
4th, porch is precipitous
Controlling switch S2 and S3 are accessed between buck power is changed and is loaded, passes through specific timing control S2's and S3
Break-make.Start initial stage in pulse, S2 closures, S3 shut-offs, when inductive current rises to higher value, turn off S2, close S3, will be compared with
Big inductor current value moment is transferred in load, and load current rising edge is along precipitous；And in end-of-pulsing, control the pass of S3
Disconnected, load current moment reduces, and trailing edge is precipitous.
5th, energy feedback regenerates
In end-of-pulsing, the energy of I^2 L is also saving in inductance L, and the shut-off of S3 causes these energy not to negative
Transmission is carried, while these energy can not be stored in inductance.At this time, sustained diode 2, inductive current warp are increased in circuit
L, D1, D2 and C form closed loop, charge to capacitance C, realize the feedback regeneration of energy.
6th, controllable repetition rate and pulse width
The generation and end of pulse are determined by pulse command, the frequency and duty cycle for changing pulse command can change pulse
The repetition rate and pulse width that power occurs.
Above content is that a further detailed description of the present invention in conjunction with specific preferred embodiments, it is impossible to is assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's
Protection domain.
Claims (4)
- A kind of 1. repetitive frequency pulsed power current source, it is characterised in that：Including primary energy transform part, intermediate energy storage device It is topological with pulse shaping,The primary energy transform part includes converter, the first current detection circuit, voltage and current dual-loop control circuit, energy storage Device, energy storage device voltage detecting circuit, the voltage and current dual-loop control circuit are used to control converter to work, and described first Current detection circuit is used to provide detection energy to the voltage and current dual-loop control circuit, and the energy storage device, which is used to receive, to be stored up The energy for providing to come from converter is stored, the energy storage device voltage detecting circuit is used to carry out voltage inspection to the energy storage device Survey；The intermediate energy storage device includes capacitance battle array, super capacitor and storage battery；The pulse shaping topology includes low side buck code converters, Pulse Width Control switch, the inspection of Hysteresis control circuit, the second electric current Slowdown monitoring circuit and sequential control circuit, second current detection circuit are used to provide the Hysteresis control circuit detection energy, The Hysteresis control circuit controls the break-make of the low side buck code converters, and the Pulse Width Control switch includes the first of series connection Pulse Width Control switchs and the second Pulse Width Control switch, and the first Pulse Width Control switch and second Pulse Width Control switch are by institute Sequential control circuit control is stated to be switched on or off；The low side buck code converters include main power change switch, topological inductance, fly-wheel diode, two pole of oad freewheels Pipe, energy feedback diode, the main power change switch are responsible for the energy of the intermediate energy storage device passing through the main power The mode conversion of alteration switch break-make obtains the form of energy of pulse load demand；The topology inductance is used for the main power and becomes Change energy compression of the switch during energy conversion is carried out；The fly-wheel diode is used to give when main power change switch turns off Energy storage inductor provides continuous current circuit；The oad freewheels diode is used to provide continuous current circuit for the inductive part of pulse load, And load is caused to obtain steeper porch；The energy feedback diode, it is to be stored in inductance during pulse generation to be Dump energy provide circulation path, and by the path by energy feedback into energy storage device；The oad freewheels diode With first Pulse Width Control switch and the second Pulse Width Control switch in parallel.
- 2. repetitive frequency pulsed power current source according to claim 1, it is characterised in that：The first current detecting electricity Road or second current detection circuit are Hall current detection circuit, sampling resistor add instrument amplifier sample circuit, Sampling resistor adds the sample circuit of current mirror.
- 3. repetitive frequency pulsed power current source according to claim 1, it is characterised in that：The converter is AC/DC Converter or DC/DC converters.
- 4. repetitive frequency pulsed power current source according to claim 1, it is characterised in that：The energy storage device voltage inspection Slowdown monitoring circuit is resistance pressure-dividing network detection circuit or difference ratio voltage detecting circuit.
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| CN106655871A (en) * | 2016-12-27 | 2017-05-10 | 杭州天明电子有限公司 | Energy-saving type narrow-pulse high voltage power supply |
| CN110967572A (en) * | 2019-09-04 | 2020-04-07 | 南京理工大学 | On-vehicle pulse power source voltage current fault rapid detection device |
| CN111900895B (en) * | 2020-07-14 | 2022-07-29 | 中国电子科技集团公司第十八研究所 | Multi-phase pulse power supply and pulse forming method |
| CN114598178B (en) * | 2022-03-15 | 2024-07-12 | 清华大学 | Non-ideal characteristic compensation method for power electronic power pulse edge switch Guan Shuntai |
| CN117978133B (en) * | 2024-01-29 | 2024-09-06 | 华中科技大学 | A repetitive frequency pulse current source generating device |
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| CN102412753A (en) * | 2011-11-23 | 2012-04-11 | 华中科技大学 | High-voltage and high-power repetitive pulse power supply |
| CN102624278A (en) * | 2012-04-21 | 2012-08-01 | 吉林大学 | High-power semiconductor laser pulse drive power supply |
| CN103066956A (en) * | 2012-12-28 | 2013-04-24 | 深圳市航天新源科技有限公司 | True random number random triangular wave generating method and device |
| CN104143934A (en) * | 2014-08-19 | 2014-11-12 | 武汉华工激光工程有限责任公司 | Laser welding pulse power supply and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4565773B2 (en) * | 2001-05-31 | 2010-10-20 | 日本碍子株式会社 | High voltage pulse generator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412753A (en) * | 2011-11-23 | 2012-04-11 | 华中科技大学 | High-voltage and high-power repetitive pulse power supply |
| CN102624278A (en) * | 2012-04-21 | 2012-08-01 | 吉林大学 | High-power semiconductor laser pulse drive power supply |
| CN103066956A (en) * | 2012-12-28 | 2013-04-24 | 深圳市航天新源科技有限公司 | True random number random triangular wave generating method and device |
| CN104143934A (en) * | 2014-08-19 | 2014-11-12 | 武汉华工激光工程有限责任公司 | Laser welding pulse power supply and control method thereof |
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