CN108667337A - Highpowerpulse load power source device with fast dynamic response and its control method - Google Patents
Highpowerpulse load power source device with fast dynamic response and its control method Download PDFInfo
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- CN108667337A CN108667337A CN201810544487.8A CN201810544487A CN108667337A CN 108667337 A CN108667337 A CN 108667337A CN 201810544487 A CN201810544487 A CN 201810544487A CN 108667337 A CN108667337 A CN 108667337A
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- 230000002441 reversible effect Effects 0.000 abstract description 4
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/01—Details
- H03K3/012—Modifications of generator to improve response time or to decrease power consumption
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
Abstract
The invention discloses a kind of highpowerpulse load power source devices and its control method with fast dynamic response, the alternating current of power supply is powered after power supply matching network rectifying conversion is direct current to pulse load, pulse load characteristic is eliminated by storage capacitor, super capacitor, two-way Buck/Boost converters and its control circuit, it is combined with super capacitor using reversible transducer, solves the problems, such as the power adaptation of pulse load and power supply.The countermeasures set that the present invention can be used for load pulse frequency and power arbitrarily changes, and arbitrary powersupply system is adapted to, its advantage is that：The utilization rate of power supply is high, adaptable；It is fast to control simple and reliable and transient response speed.
Description
Technical field
The present invention relates to pulse load power technique fields, specially a kind of highpowerpulse with fast dynamic response
Load power source device and its control method.
Background technology
Countermeasures set output signal is generally in wide-band, pulse change characteristic, and the characteristic is to its generator powered
More stringent requirements are proposed for stability.When the pulse change power capacity and generated output power capacity of countermeasures set
When accounting is more than 40% and pulse change frequency consistent with generator closed loop adjusting frequency, generator output voltage amplitude can be caused
The unstable, index of modulation is more than the standard prescribed requirement of GJB181, and then influences countermeasures set stabilization and normal work.
The prior art is utilized in power supply system and increases storage capacitor, resistance, switch and phase inverter to eliminate pulse load
To the adverse effect of power supply, storage capacitor for absorb countermeasures set pulse power variation slope, resistance, switch and
The circuit of phase inverter composition absorbs extra output power, and the program can cause extra output power to fall nothing by resistive dissipation
Method utilizes, and circuit efficiency is low, and calorific value is big.
Invention content
It can be when output power be more than pulse load power in view of the above-mentioned problems, the purpose of the present invention is to provide one kind
Extra power is absorbed, and insufficient power can be supplemented when output power is less than pulse load power, solves high-power arteries and veins
Punching load is with the power adaptation problem of power supply with the highpowerpulse load power source of fast dynamic response and its control
Method processed.Technical solution is as follows：
The alternating current of a kind of highpowerpulse load power source with fast dynamic response, power supply passes through power supply matching network
Rectifying conversion be direct current after to pulse load power, by storage capacitor, super capacitor, two-way Buck/Boost converters and
Its control circuit eliminates pulse load characteristic；The storage capacitor is parallel to the output end of power supply matching network, described two-way
Buck/Boost converters include inductanceL, switching tubeS 1And switching tubeS 2；InductanceLOne end connects DC bus anode, the other end
Connecting valve pipeS 1The poles D, switching tubeS 1The poles S be connected to DC bus cathode；Switching tubeS 2The poles D be connected to switching tubeS 1
The poles D, switching tubeS 2The poles S be connected to the positive plate of super capacitor, the negative plate of super capacitor is connected to switching tubeS 1The poles S；
Switching tubeS 1And switching tubeS 2The poles G be connected respectively to control circuit.
Further, the control circuit includes second-order low-pass filter, subtracter SU1, subtracter SU2, subtracter
SU3, pi regulator, PWM controller, comparator, phase inverter, multiplexer and driving circuit；
Output current sampling end is connected to the negative input end of the input terminal and subtracter SU1 of second-order low-pass filter, second order simultaneously
The output end of low-pass filter is connected to the positive input terminal of subtracter SU1, and the output end of subtracter SU1 is connected to subtracter SU2
Positive input terminal, the negative input end of subtracter SU2 is connected to inductive current sampling end, and the output end of subtracter SU2 connects PI tune
Save the input terminal of device；The output end and sawtooth wave output terminal of pi regulator are connected to the input terminal of PWM controller simultaneously；PWM is controlled
The output end of device processed is connected to multiplexer M1 all the way, and another way is connected to multiplexer M2 after phase inverter；
The in-phase input end of comparator is connected to output current sampling end, and inverting input is connected to the defeated of second-order low-pass filter
Outlet, the output end of the comparator selection signal after phase inverter as multiplexer M1 all the way, another way and subtracter
The output signal of SU3 is passed through and the selection signal behind the door as multiplexer M2；The positive input terminal connection output of subtracter SU3
Current sampling port, negative input end connect the output end of second-order low-pass filter；
The output end of multiplexer M1 is connected to switching tube by driving circuitS 1The poles G, the output end of multiplexer M2
It is connected to switching tube by driving circuitS 2The poles G.
A kind of control method of the highpowerpulse load power source with fast dynamic response, including：
When power supply is constant pressure output, pulse load output is obtained after output current sampling after second-order low-pass filter
Current averageI P_av, output current average valueI P_avSubtract load output current instantaneous valuei pTwo-way Buck/Boost is obtained to become
The reference value of parallel operation inductive currentI ref；
To make two-way Buck/Boost converter inductive currents follow reference value, inductive current instantaneous value is sampled from inductancei LWith
The reference value of electric currentI refPi regulator is sent into after subtracting each other, the error signal after PI is adjustedv cWith PWM is obtained after sawtooth wave
Pulse drive signal；
Pwm pulse drive signal is sent into multiplexer M1；And simultaneously by pwm pulse drive signal after phase inverter negates
It is sent into multiplexer M2；
The selection signal of multiplexer M1 is by output current instantaneous valuei pWith output current average valueI P_avAfter comparator
Electric current comparison signal is obtained to generate using phase inverter；
By output current instantaneous valuei pWith output current average valueI P_avCurrent error signal, current error signal are obtained after subtracting each other
Pass through and the selection signal behind the door as multiplexer M2 with electric current comparison signal；
The output signal of multiplexer M1 and M2 pass through life respectively as two groups of switching drive signals of two-way Buck/Boost
The charge and discharge that super capacitor is controlled at two groups of switching drive signals, realize the compensation of output power.
The beneficial effects of the invention are as follows：
1）The present invention is combined using two-way Buck/Boost converters with super capacitor, both can be negative more than pulse in output power
Extra power is absorbed when carrying power, and can supplement insufficient power when output power is less than pulse load power, is solved
Highpowerpulse loads the power adaptation problem with power supply；
2）When countermeasures set is in standby or invariable power state, control loop not output drive signal, super capacitor
It is disconnected with busbar, bearing power embodies constant output characteristic to output power at this time, needs not compensate for power, is suitable for electronic countermeasure
The various power output mode of equipment；
3）Extra output power is not consumed by other approach, but is stored by super capacitor in case electronics
Countermeasurer uses when working, and improves the utilization rate of power supply, and then improve system effectiveness；
4）When power supply directly connects with pulse load after power supply matching network, control loop only needs sampling to export
Electric current and two-way Buck/Boost converter inductive currents, you can realize the power limitation control of power supply, control loop design
Simply.
Description of the drawings
Fig. 1 is the highpowerpulse load power source structural schematic diagram of the present invention.
Fig. 2 is the two-way Buck/Boost converter and its control circuit schematic diagram of the present invention.
Fig. 3 is the highpowerpulse adaptive load circuit work block diagram of the present invention.
Fig. 4 is to load the time-domain-simulation oscillogram of Switching Power Supply when being exported for pulse power in the embodiment of the present invention one.
Fig. 5 is to load the time-domain-simulation oscillogram of Switching Power Supply when being exported for firm power in the embodiment of the present invention one.
Specific implementation mode
The present invention is described in further details in the following with reference to the drawings and specific embodiments.Fig. 1 is that the present invention proposes circuit
Functional block diagram, the alternating current of power supply supplies after power supply matching network rectifying conversion is direct current to countermeasures set
Electricity eliminates countermeasures set by storage capacitor, super capacitor, two-way Buck/Boost converters and its control circuit
Pulse load characteristic makes the energization input of rectification circuit that constant power load characteristic be presented, to solve countermeasures set and supply
The power adaptation problem of power supply.
Fig. 2 is that the two-way Buck/Boost converters of the present invention and its control circuit, the storage capacitor are parallel to power supply
The output end of matching network.As shown in Fig. 2 (a), two-way Buck/Boost converters include inductanceL, switching tubeS 1And switching tubeS 2；The one end inductance L connects DC bus anode, other end connecting valve pipeS 1The poles D, switching tubeS 1The poles S be connected to direct current mother
Line cathode；Switching tubeS 2The poles D be connected to switching tubeS 1The poles D, switching tubeS 1The poles S be connected to the positive plate of super capacitor, surpass
The negative plate of grade capacitance is connected to switching tubeS 1The poles S；Switching tubeS 1And switching tubeS 2The poles G be connected respectively to control circuit.
Two-way Buck/Boost converters are combined with super capacitor, you can when output power is more than pulse load power
Extra power is absorbed, and insufficient power can be supplemented when output power is less than pulse load power, improves dynamic response speed
It spends while reducing system energy consumption.
Such as Fig. 2（b）Shown, control circuit includes second-order low-pass filter, subtracter SU1, subtracter SU2, subtracter
SU3, pi regulator, PWM controller, comparator, phase inverter, multiplexer and driving circuit.Output current sampling end is same
When be connected to second-order low-pass filter input terminal and subtracter SU1 negative input end, the output end of second-order low-pass filter connects
It is connected to the positive input terminal of subtracter SU1, the output end of subtracter SU1 is connected to the positive input terminal of subtracter SU2, subtracter SU2
Negative input end be connected to inductive current sampling end, the input terminal of the output end connection pi regulator of subtracter SU2；Pi regulator
Output end and sawtooth wave output terminal be connected to the input terminal of PWM controller simultaneously；The output end of PWM controller is connected to all the way
Multiplexer M1, another way are connected to multiplexer M2 after phase inverter.The in-phase input end of comparator is connected to defeated
Go out current sampling port, inverting input is connected to the output end of second-order low-pass filter, and the output end of comparator passes through instead all the way
Selection signal after phase device as multiplexer M1, output signal conduct after phase inverter of another way and subtracter SU3
The selection signal of multiplexer M2；The positive input terminal of subtracter SU3 connects output current sampling end, and negative input end connects second order
The output end of low-pass filter；The output end of multiplexer M1 is connected to switching tube by driving circuitS 1The poles G, multichannel is multiple
Switching tube is connected to by driving circuit with the output end of device M2S 2The poles G.
When power supply is constant pressure output, it is only necessary to it controls electric current and input power limitation control can be realized, it is specific to control
Principle is as follows：Pulse load output current average value is obtained after second-order low-pass filter after output current samplingI P_av, defeated
Go out current averageI P_avSubtract load output current instantaneous valuei pObtain the ginseng of two-way Buck/Boost converter inductive currents
Examine valueI ref.To make two-way Buck/Boost converter inductive currents follow reference value, inductive current instantaneous value is sampled from inductancei LWith the reference value of electric currentI refPi regulator is sent into after subtracting each other, the error signal after PI is adjustedv cIt is obtained with after sawtooth wave
Pwm pulse drive signal is sent into multiplexer M1, and the pwm pulse drive signal of generation is sent into after phase inverter negates
The selection signal of multiplexer M2, M1 are by output current instantaneous valuei pWith output current average valueI P_avAfter comparator
It is generated to electric current comparison signal using phase inverter, by output current instantaneous valuei pWith output current average valueI P_avAfter subtracting each other
To current error signal, current error signal passes through with electric current comparison signal and believes behind the door as the selection of multiplexer M2
Number, the output signal of multiplexer M1 and M2 pass through life respectively as two groups of switching drive signals of two-way Buck/Boost
The charge and discharge that super capacitor is controlled at two groups of switching drive signals, realize the compensation of output power.
As shown in figure 3, when countermeasures set is operated under pulse load quality event, rated output power is with one
Fixed frequency and duty ratio D carries out cyclically-varying.When countermeasures set is in light condition, required bearing power is less than
Output power, at this time extra output power Δ P1It charges for super capacitor；It is required when countermeasures set is in full load condition
Power is more than output power, and super capacitor is with Δ P at this time2Discharge supplementary power power.Surplus power is absorbed by super capacitor
With supplement deficit power, load pulse power demand is constant power for the output end of power supply matching network, in turn
The input power of power supply is also constant, solves highpowerpulse load（Countermeasures set）With the electricity of power supply
Source adaptability problem.Storage capacitor C is used to compensate and response time of smooth super capacitor compensation electric current and thus caused
Busbar voltage V variations, improve the adaptability of circuit.
When countermeasures set is standby or constant power load changes, it is not necessarily to additional control algolithm, you can realize power supply
The power limitation control of power supply is suitable for the various power output mode of countermeasures set.When power supply is matched by power supply
When directly connecting with pulse load after network, control loop only needs sampled output current and two-way Buck/Boost converters electricity
Inducing current, you can realize that the power limitation control of power supply, control loop design are simple.
Analysis of simulation result：
Fig. 4 and Fig. 5 is to present invention progress time-domain-simulation using Psim softwares as a result, Fig. 4（a）、（b）, (c), (d) and (e)
Horizontal axis be time, unit s；（a）The longitudinal axis be respectively input current and load output current, unit A；（b）It is vertical
Axis is input current, unit A；（c）The longitudinal axis be load output current, unit A；（d）The longitudinal axis be inductive current, unit
For A；（e）The longitudinal axis be reversible transducer switching tube drive waveforms, unit V.Fig. 5（a）、（b）, (c), (d) and (e) horizontal axis
It is time, unit s；（a）The longitudinal axis be respectively to load output current and input current, unit A；（b）The longitudinal axis be it is defeated
Enter electric current, unit A；（c）The longitudinal axis be load output current, unit A；（d）The longitudinal axis be inductive current, unit A；
（e）The longitudinal axis be reversible transducer switching tube drive waveforms, unit V.Simulated conditions：Busbar voltageV in=270V, inductanceL=
400uH, super capacitorC=470uF loads frequency 200Hz, loads full-load power 2000W, and the amplitude of variation of pulse power is
10%-100% changes, switching frequency 100kHz.
By Fig. 4 (a) it is found that when load pulse power jumps to 100% by 10%, input current passes through the dynamic of 0.0004s
Reach stable state after response time, rapid dynamic response speed, Fig. 4 (b) and (c) are respectively input current and load current
Waveform amplification.By Fig. 4 (d) it is found that when bearing power is fully loaded 10%, extra output power passes through two-way Buck/Boost
Converter charges for super capacitor, and inductive current is just at this time, and converter works in Boost patterns（Fig. 4 (e)）；When load work(
Rate is full load, and super capacitor electric discharge is by two-way Buck/Boost converters supplementary power power, and inductive current is negative at this time,
Converter works in Buck patterns（Fig. 4 (e)）.By Fig. 5 (a) it is found that when bearing power jumps to firm power by pulsating power,
Input current reaches stable state, rapid dynamic response speed after the dynamic response time of 0.031s, and Fig. 5 (b) and (c) divide
When Wei not load firm power, the waveform amplification of input current and load current, input current is stablized.It can by Fig. 5 (d) and (e)
Know, when loading firm power, switching tube cut-off, inductive current 0, reversible transducer is stopped.Therefore, by simulation result
Known to：Pulse load characteristic can be eliminated using bidirectional energy-storage converter, the power supply for solving countermeasures set and power supply is suitable
Answer sex chromosome mosaicism.Pulse frequency and power when countermeasures set works can arbitrarily change, and be suitable for arbitrary powersupply system.
Claims (3)
1. a kind of highpowerpulse load power source device with fast dynamic response, which is characterized in that the exchange of power supply
Electricity is powered after power supply matching network rectifying conversion is direct current to pulse load, by storage capacitor, super capacitor, two-way
Buck/Boost converters and its control circuit eliminate pulse load characteristic；The storage capacitor is parallel to power supply matching network
Output end, the two-way Buck/Boost converters include inductanceL, switching tubeS 1And switching tubeS 2；InductanceLOne end connection is straight
Flow busbar anode, other end connecting valve pipeS 1The poles D, switching tubeS 1The poles S be connected to DC bus cathode；Switching tubeS 2D
Pole is connected to switching tubeS 1The poles D, switching tube S2The poles S be connected to the positive plate of super capacitor, the negative plate connection of super capacitor
To switching tube S1The poles S；Switching tube S1With switching tube S2The poles G be connected respectively to control circuit.
2. the highpowerpulse load power source device according to claim 1 with fast dynamic response, which is characterized in that
The control circuit includes second-order low-pass filter, subtracter SU1, subtracter SU2, subtracter SU3, pi regulator, PWM controls
Device, comparator, phase inverter, multiplexer and driving circuit；
Output current sampling end is connected to the negative input end of the input terminal and subtracter SU1 of second-order low-pass filter, second order simultaneously
The output end of low-pass filter is connected to the positive input terminal of subtracter SU1, and the output end of subtracter SU1 is connected to subtracter SU2
Positive input terminal, the negative input end of subtracter SU2 is connected to inductive current sampling end, and the output end of subtracter SU2 connects PI tune
Save the input terminal of device；The output end and sawtooth wave output terminal of pi regulator are connected to the input terminal of PWM controller simultaneously；PWM is controlled
The output end of device processed is connected to multiplexer M1 all the way, and another way is connected to multiplexer M2 after phase inverter；
The in-phase input end of comparator is connected to output current sampling end, and inverting input is connected to the defeated of second-order low-pass filter
Outlet, the output end of the comparator selection signal after phase inverter as multiplexer M1 all the way, another way and subtracter
The output signal of SU3 is passed through and the selection signal behind the door as multiplexer M2；The positive input terminal connection output of subtracter SU3
Current sampling port, negative input end connect the output end of second-order low-pass filter；
The output end of multiplexer M1 is connected to switching tube by driving circuitS 1The poles G, the output end of multiplexer M2 is logical
Overdrive circuit is connected to switching tubeS 2The poles G.
3. a kind of controlling party of the highpowerpulse load power source device as claimed in claim 2 with fast dynamic response
Method, which is characterized in that including：
When power supply is constant pressure output, pulse load output electricity is obtained by second-order low-pass filter after output current sampling
Levelling mean valueI P_av, output current average valueI P_avSubtract load output current instantaneous value ipObtain two-way Buck/Boost transformation
The reference value of device inductive currentI ref；
To make two-way Buck/Boost converter inductive currents follow reference value, inductive current instantaneous value is sampled from inductancei LWith
The reference value of electric currentI refPi regulator is sent into after subtracting each other, the error signal after PI is adjustedv cWith PWM is obtained after sawtooth wave
Pulse drive signal；
Pwm pulse drive signal is sent into multiplexer M1；And simultaneously by pwm pulse drive signal after phase inverter negates
It is sent into multiplexer M2；
The selection signal of multiplexer M1 is by output current instantaneous valuei pWith output current average valueI P_avAfter comparator
It is generated to electric current comparison signal using phase inverter；
By output current instantaneous valuei pWith output current average valueI P_avCurrent error signal, current error signal are obtained after subtracting each other
Pass through and the selection signal behind the door as multiplexer M2 with electric current comparison signal；
The output signal of multiplexer M1 and M2 pass through life respectively as two groups of switching drive signals of two-way Buck/Boost
The charge and discharge that super capacitor is controlled at two groups of switching drive signals, realize the compensation of output power.
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Cited By (9)
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| CN109104116A (en) * | 2018-10-16 | 2018-12-28 | 浙江嘉科电子有限公司 | One kind can the smooth input current type pulse power |
| CN110445363A (en) * | 2019-08-21 | 2019-11-12 | 西南交通大学 | It is a kind of for inhibiting the highpowerpulse load power source of bus current spike |
| CN112636585A (en) * | 2020-12-11 | 2021-04-09 | 中国电子科技集团公司第十四研究所 | Power fluctuation suppression system and design method thereof |
| CN112968453A (en) * | 2021-01-25 | 2021-06-15 | 中国电子科技集团公司第二十九研究所 | Method for matching large dynamic load change through BUCK energy storage circuit |
| CN114362524A (en) * | 2021-12-27 | 2022-04-15 | 西南交通大学 | Low-frequency arbitrary-state pulse load power supply power matching method |
| US11316363B2 (en) * | 2019-10-01 | 2022-04-26 | National Technology & Engineering Solutions Of Sandia, Llc | Energy storage systems for electrical microgrids with pulsed power loads |
| CN114844189A (en) * | 2022-03-25 | 2022-08-02 | 中国电子科技集团公司第二十九研究所 | Method for improving voltage modulation of power supply system |
| CN115459596A (en) * | 2022-11-09 | 2022-12-09 | 西南交通大学 | Quasi-proportional resonance control method for inhibiting output voltage fluctuation of pulse load power supply |
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