CN107517002A - Multi-stage adjustment control system for shunting adjustment of frequency-limiting switch of space power supply - Google Patents
Multi-stage adjustment control system for shunting adjustment of frequency-limiting switch of space power supply Download PDFInfo
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- CN107517002A CN107517002A CN201710718886.7A CN201710718886A CN107517002A CN 107517002 A CN107517002 A CN 107517002A CN 201710718886 A CN201710718886 A CN 201710718886A CN 107517002 A CN107517002 A CN 107517002A
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- 230000005611 electricity Effects 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 description 11
- 230000003321 amplification Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 238000003199 nucleic acid amplification method Methods 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- RRNIZKPFKNDSRS-UHFFFAOYSA-N Bensulide Chemical compound CC(C)OP(=S)(OC(C)C)SCCNS(=O)(=O)C1=CC=CC=C1 RRNIZKPFKNDSRS-UHFFFAOYSA-N 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The invention discloses a multistage adjustment control system for shunting adjustment of a frequency limiting switch of a space power supply, which comprises: the system comprises an S3R main circuit, a return difference control circuit and an MEA _ S3R circuit, wherein the S3R main circuit comprises a main circuit positive input terminal and a main circuit negative input terminal; the positive input terminal of the main circuit is connected with the positive terminal of the bus after passing through the isolation diode, the negative input terminal of the main circuit is connected with the negative terminal of the bus, and the positive input terminal of the main circuit is connected with the negative input terminal of the main circuit sequentially through the shunt switch, the inductor and the fuse; the positive output terminal of the main circuit is connected with the negative output terminal of the main circuit through a plurality of shunt branches; the return difference control circuit comprises a comparator; the MEA _ S3R circuit is a two-out-of-three voting circuit; the output terminal of the S3R main circuit is connected with the input terminal of the MEA _ S3R circuit; the output terminal of the comparator is connected with the control terminal of the shunt switch; the output terminal of the MEA _ S3R circuit is connected to the control terminal of the shunt switch.
Description
Technical field
The present invention relates to space power system technical field, and it is multistage to limit the regulation of frequency Switching Shunt more particularly to a kind of space power system
Adjustment control system.
Background technology
S3R limit frequency Switching Shunt regulation technologies are in 20th century the seventies by ESA (European Space Agency)
What latter stage proposed, S3R technologies have simple circuit compared with PWM (pulse width modulation) dividing technology, and heat consumption is low, and reliability is high
The advantages that, and current changing rate and maximum electricity when being turned in S3R (sequence switch parallel regulator) technology to isocon
Stream is limited, and further increases the adaptability of EMC (electromagnetic compatibility) indexs and S3R technologies.
S3R circuit work frequencies are relevant with bus ripple, square formation electric current and bus filtering capacitance：
Wherein, f is working frequency, IsaFor solar battery array single-stage electric current, CbusFor bus capacitor, VrippleFor bus line
Ripple.
Peak frequency more low-heat power consumption is lower, is usually no more than 2kHz.(it is less than 1A) when square formation electric current is smaller, one-level
Square formation regulation can not meet bus requirement, and two-stage or the mode of operation of two-stage above square formation regulation now occurs.Because single-stage
Square formation electric current is smaller, can not change bus ripple slope, causes bus frequencies go lower, and integral adjustment circuit works on and caused more
Multistage square formation input regulation.
When square formation electric current is smaller, busbar voltage rate of change diminishes, when one-level square formation S3Ri is shunted, busbar voltage change
Direction is not changed, and MEA (bus error amplification signal) voltage continues to raise, and causes S3Ri+1, it is also possible to S3Ri+2 or
More stages participates in regulation.
After above-mentioned square formation puts into shunting, busbar voltage declines rapidly, MEA voltage reversals, constantly reduces, now S3Ri
+ 2, S3Ri+1 and S3Ri, terminate shunting and start to power.
When square formation electric current is smaller, the shunting series for participating in regulation is more.Now square formation frequency formula is not suitable for this operating mode.
The content of the invention
The technical problem to be solved in the present invention is：There is provided a kind of control accuracy high space power system limit frequency Switching Shunt regulation
Multistage adjustment control system；By to S3R main circuits, the amplifying circuit of main error controling signal and MEA return difference control circuits
Optimization design, improve gain around feedback characteristic and the stability of a system, eliminate S3R circuits and produce 3 under specific operation
The phenomenon that level or more level adjusts simultaneously.
The present invention is adopted the technical scheme that to solve technical problem present in known technology：
A kind of space power system limit frequency Switching Shunt adjusts multistage adjustment control system, comprises at least：
S3R main circuits, the S3R main circuits include the main circuit positive input terminal electrically connected with cell array positive output terminals
Son, the main circuit negative input terminal electrically connected with cell array negative output terminals；The main circuit positive input terminal passes through isolation
Main circuit positive output terminal, the main circuit negative input terminal and bus negative pole end are connected as after diode with bus positive terminal
Son is connected as main circuit negative output terminal, the main circuit positive input terminal pass sequentially through diverting switch, inductance and fuse with
Main circuit negative input terminal electrically connects；The main circuit positive output terminal passes through multiple diverter branch and main circuit being connected in parallel to each other
Negative output terminal electrically connects；Each diverter branch includes an electric capacity and a fuse；
Return difference control circuit, the return difference control circuit include a comparator；The positive input terminal of the comparator and
Negative input terminal is connected to resistance；The positive input terminal of the comparator is electrically connected by resistance and comparator output terminal
Connect；
MEA_S3R circuits, the MEA_S3R circuits are two from three voting circuit；Wherein：
The bus positive terminal and bus negative terminal electrically connect composition current supply circuit with load；The S3R main circuits
Lead-out terminal electrically connected with the input terminal of MEA_S3R circuits；The control terminal of comparator output terminal and diverting switch
Son electrical connection；The lead-out terminal of the MEA_S3R circuits electrically connects with the control terminal of diverting switch.
Preferably, the present invention additionally uses following technical scheme：
Further：The diverting switch is the enhanced FET of P channel；The drain electrode of the FET and cell array are just
Pole lead-out terminal electrical connection, the source electrode of the FET electrically connect with fuse；The source electrode of the FET passes through resistance
Electrically connected with grid；The grid is the control terminal of diverting switch.
Further：The MEA_S3R circuits include the first amplifying circuit, the first voting circuit, the second amplifying circuit and the
Two voting circuits.
The present invention has the advantages and positive effects of：
1st, the present invention produces the phenomenon that 3 grades or more levels adjust simultaneously due to S3R circuit for eliminating so that busbar voltage is steady
Qualitative raising, fluctuation (bus ripple) are smaller.
2nd, caloric value is larger when switching tube is in switch adjustment, eliminates multistage and adjusts phenomenon simultaneously, advantageously reduces S3R electricity
The heat consumption of way switch pipe, improve the reliability of product.
Brief description of the drawings
Fig. 1 is the circuit block diagram of the preferred embodiment of the present invention；
Fig. 2 is the circuit diagram of S3R main circuits in the preferred embodiment of the present invention；
Fig. 3 is the circuit diagram of MEA_S3R circuits in the preferred embodiment of the present invention；
Fig. 4 is the circuit diagram of return difference control circuit in the preferred embodiment of the present invention；
Fig. 5 is S3R circuits control loop block diagram in the preferred embodiment of the present invention；
Fig. 6 is that MEA controls return difference schematic diagram in the preferred embodiment of the present invention；
Fig. 7 is that S3R circuits are in bus ripple when Mono-pole switch adjusts in the preferred embodiment of the present invention；
Fig. 8 is that S3R circuits are in bus ripple when multiple-pole switch adjusts in the preferred embodiment of the present invention.
Embodiment
In order to further understand the content, features and effects of the present invention, hereby enumerating following examples, and coordinate accompanying drawing
Describe in detail as follows：
Fig. 1 to Fig. 8 is referred to, a kind of space power system limit frequency Switching Shunt adjusts multistage adjustment control system, including：
S3R main circuits, referring to Fig. 2, the S3R main circuits include the main electricity electrically connected with cell array positive output terminals
Road positive input terminal, the main circuit negative input terminal electrically connected with cell array negative output terminals；The main circuit positive input terminal
Son by being connected as main circuit positive output terminal after isolating diode with bus positive terminal, the main circuit negative input terminal with
Bus negative terminal is connected as main circuit negative output terminal, and the main circuit positive input terminal passes sequentially through diverting switch, inductance
Electrically connected with fuse with main circuit negative input terminal；The main circuit positive output terminal passes through multiple shunting branch being connected in parallel to each other
Road electrically connects with main circuit negative output terminal；Each diverter branch includes an electric capacity and a fuse；
Return difference control circuit, referring to Fig. 4, the return difference control circuit includes a comparator；The comparator is just
Input terminal and negative input terminal are connected to resistance；The positive input terminal of the comparator is exported by resistance and comparator
Terminal electrically connects；
MEA_S3R circuits, referring to Fig. 3, the MEA_S3R circuits are two from three voting circuit；The MEA_
S3R circuits include the first amplifying circuit, the first voting circuit, the second amplifying circuit and the second voting circuit；Wherein：
The bus positive terminal and bus negative terminal electrically connect composition current supply circuit with load；The S3R main circuits
Lead-out terminal electrically connected with the input terminal of MEA_S3R circuits；The control terminal of comparator output terminal and diverting switch
Son electrical connection；The lead-out terminal of the MEA_S3R circuits electrically connects with the control terminal of diverting switch.
Preferably, the diverting switch is the enhanced FET of P channel；The drain electrode of the FET and cell array
Positive output terminals electrically connect, and the source electrode of the FET electrically connects with fuse；The source electrode of the FET passes through electricity
Resistance electrically connects with grid；The grid is the control terminal of diverting switch.
The major function of error amplifying circuit is completed to error signal (busbar voltage voltage division signal and circuit reference signal
Difference) proportional integration.MEA output signals are uniformly controlled the shunt regulating of solar battery array, ensure the satellite in-orbit whole longevity
Busbar voltage is stable during life.Fixed corresponding relation, control loop block diagram such as Fig. 5 be present with output impedance in MEA circuit gains
It is shown.
Shown in the mathematic(al) representation of MEA output signals such as formula (2)：
VMEA=A (s) × (Vref-K×Vbus) (2)
Wherein：VMEAFor bus error amplification signal voltage；A (s) is error signal multiplication factor；VrefFor reference voltage；K
Declined for busbar voltage and drop multiple；VbusFor busbar voltage；
MEA circuits use the design of two from three voting circuit.Independent bus voltage division signal and base are respectively provided with per MEA all the way
Quasi- voltage, voting circuit automatically select the median of No. three amplifier outputs as control signal.To improve control accuracy, MEA
Signal carries out secondary amplification based on VMEA_BDR (amplification domain bus error amplification signal), forms VMEA_S3R (shunting domains
Bus error amplification signal) signal.
Solar battery array is divided into N number of identical point battle array, each the anode of point battle array is connected to ground by a diverting switch
Line, positive bus-bar is connected to by an isolating diode.The energy of each point battle array, which passes to bus or consumed, to be depended on
The state of diverting switch.If the electric current that load needs is I0, then control circuit will turn off M diverting switch, and only one
Individual point of battle array is in adjustment state, and dutycycle is D (D ﹤ 1), and remaining individual point of battle array of N- (M+1) is all short-circuited.Then：I0=MISAN+
DISAN, it is ensured that busbar voltage is stable.I0The electric current needed for load, ISANFor the electric current of one-level solar battery array；
All shunt circuits of S3R are identical, are controlled by same bus error amplification signal (MEA).Shunt circuit is patrolled
Collect the comparison that state (on or off) depends on MEA and the reference voltage per fraction current circuit.Every grade of reference voltage passes through bus
Voltage is uniformly distributed through electric resistance partial pressure so that same increment is well-regulated.The effect of isolating diode is to prevent to work as diverting switch pipe N
, inductance is for current spike when limit switch pipe is opened, protection switch to bus current inverse injection to power supply during opening
The trouble free service of pipe.
Adjust the high voltage V of the working condition and this grade of comparator return difference of levelHNWith low-voltage VLNIt is relevant, as shown in Figure 6.
When diverting switch pipe turns off (OFF), the solar cell electric current for injecting bus is higher than load current, and now bus filter capacitor fills
Electricity, busbar voltage rise, control signal voltage VC(MEA) gradually rise.As voltage VCIt is increased to the upper voltage limit V of this gradeHNWhen,
Switching tube turns on (ON), and the solar cell electric current for now injecting bus is less than load current, the electric discharge of bus filter capacitor, bus electricity
Pressure drop is low, control signal voltage VC(MEA) gradually reduce, until voltage VCIt is reduced to the lower voltage limit V of this gradeLNWhen, switch
Pipe turns off, and completes an adjustment cycle.
Limit frequency switching circuit is made up of return difference (Schmidt) comparator, as shown in Figure 4.
Return difference DH expression formula such as formula：DH=VHN-VLN=VA*R1/R2 (3)
Reference voltage VNSetting range be Formula VN-1＜ VN≤VN-1+ DH (N=2,3 ...)
Reference voltage VNAs long as setting theoretically ensure VN＞ VN-1, that is to say, that S3R adjustment areas at different levels
Between can be with juxtaposition, without setting dead band.
Embodiments of the invention are described in detail above, but the content is only presently preferred embodiments of the present invention,
It is not to be regarded as the practical range for limiting the present invention.Any changes and modifications in accordance with the scope of the present application,
All should still it belong within the patent covering scope of the present invention.
Claims (3)
1. a kind of space power system limit frequency Switching Shunt adjusts multistage adjustment control system, comprise at least：
S3R main circuits, the S3R main circuits include electrically connected with cell array positive output terminals main circuit positive input terminal,
The main circuit negative input terminal electrically connected with cell array negative output terminals；The main circuit positive input terminal is by isolating two poles
Guan Houyu bus positive terminals are connected as main circuit positive output terminal, and the main circuit negative input terminal connects with bus negative terminal
Main circuit negative output terminal is connected in, the main circuit positive input terminal passes sequentially through diverting switch, inductance and fuse and main electricity
Road negative input terminal electrical connection；The main circuit positive output terminal is born defeated by multiple diverter branch being connected in parallel to each other with main circuit
Go out terminal electrical connection；Each diverter branch includes an electric capacity and a fuse；
Return difference control circuit, the return difference control circuit include a comparator；The positive input terminal of the comparator and negative defeated
Enter terminal and be connected to resistance；The positive input terminal of the comparator is electrically connected by resistance with comparator output terminal；
MEA_S3R circuits, the MEA_S3R circuits are two from three voting circuit；Wherein：
The bus positive terminal and bus negative terminal electrically connect composition current supply circuit with load；The S3R main circuits it is defeated
The input terminal for going out terminal with MEA_S3R circuits electrically connects；The control terminal electricity of comparator output terminal and diverting switch
Connection；The lead-out terminal of the MEA_S3R circuits electrically connects with the control terminal of diverting switch.
2. space power system limit frequency Switching Shunt according to claim 1 adjusts multistage adjustment control system, it is characterised in that：
The diverting switch is the enhanced FET of P channel；The drain electrode of the FET is electrically connected with cell array positive output terminals
Connect, the source electrode of the FET electrically connects with fuse；The source electrode of the FET is electrically connected by resistance with grid；Institute
State the control terminal that grid is diverting switch.
3. space power system limit frequency Switching Shunt according to claim 1 adjusts multistage adjustment control system, it is characterised in that：
The MEA_S3R circuits include the first amplifying circuit, the first voting circuit, the second amplifying circuit and the second voting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710718886.7A CN107517002A (en) | 2017-08-21 | 2017-08-21 | Multi-stage adjustment control system for shunting adjustment of frequency-limiting switch of space power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710718886.7A CN107517002A (en) | 2017-08-21 | 2017-08-21 | Multi-stage adjustment control system for shunting adjustment of frequency-limiting switch of space power supply |
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| CN107517002A true CN107517002A (en) | 2017-12-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831159A (en) * | 2019-01-28 | 2019-05-31 | 深圳市航天新源科技有限公司 | A kind of method for diagnosing faults of sequence switch parallel regulator |
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|---|---|---|---|---|
| CN102324583A (en) * | 2011-09-01 | 2012-01-18 | 航天东方红卫星有限公司 | Lithium ion storage battery charging method based on sequential shunt switching regulation (S3R) |
| CN102332817A (en) * | 2011-09-14 | 2012-01-25 | 深圳航天科技创新研究院 | Solar energy array sequence parallel regulator |
| CN106428637A (en) * | 2016-10-14 | 2017-02-22 | 深圳航天科技创新研究院 | Integrated electric propulsion power system |
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2017
- 2017-08-21 CN CN201710718886.7A patent/CN107517002A/en active Pending
Patent Citations (3)
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|---|---|---|---|---|
| CN102324583A (en) * | 2011-09-01 | 2012-01-18 | 航天东方红卫星有限公司 | Lithium ion storage battery charging method based on sequential shunt switching regulation (S3R) |
| CN102332817A (en) * | 2011-09-14 | 2012-01-25 | 深圳航天科技创新研究院 | Solar energy array sequence parallel regulator |
| CN106428637A (en) * | 2016-10-14 | 2017-02-22 | 深圳航天科技创新研究院 | Integrated electric propulsion power system |
Non-Patent Citations (1)
| Title |
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| 高金艳: "航天电源***优化设计与可靠性研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑 C031-2226》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831159A (en) * | 2019-01-28 | 2019-05-31 | 深圳市航天新源科技有限公司 | A kind of method for diagnosing faults of sequence switch parallel regulator |
| CN109831159B (en) * | 2019-01-28 | 2020-06-23 | 深圳市航天新源科技有限公司 | Fault diagnosis method for sequential switch shunt regulator |
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Application publication date: 20171226 |