CN105391301A - Power control unit (PCU) control system based on bidirectional multi-port converter with wide voltage range - Google Patents
Power control unit (PCU) control system based on bidirectional multi-port converter with wide voltage range Download PDFInfo
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- CN105391301A CN105391301A CN201510989359.0A CN201510989359A CN105391301A CN 105391301 A CN105391301 A CN 105391301A CN 201510989359 A CN201510989359 A CN 201510989359A CN 105391301 A CN105391301 A CN 105391301A
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- fpga
- main power
- control system
- power model
- current
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Classifications
-
- 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
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
-
- 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
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
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- 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
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The invention provides a spacecraft power controller control system based on a bidirectional multi-port converter with a wide voltage range. The spacecraft power controller control system comprises a main power part, a field programmable gate array (FPGA) part, a digital-to-analog conversion part, a voting circuit and a controlled volume sampling circuit, wherein the main power part is composed of N main power conversion modules, each main power module adopts a bidirectional three-port converter to achieve adjustment and scheduling of energy among a solar array SA, a bus BUS and a battery BAT, and the N main power modules are connected in parallel to achieve power expansion; the FPGA part comprises N FPGA modules corresponding to the N main power modules; the controlled volume sampling circuit is used for sampling the controlled volume of the power part and providing the controlled volume to the FPGA part through the A/D conversion part; driving signals given out by the FPGA are used for respectively controlling the N main power modules through the D/A conversion circuit; and the FPGA part serves as a control core of the system, and the control function of a PCU is achieved by the converters of the main power modules through a control algorithm and a control logic.
Description
Technical field
The present invention relates to electric and electronic technical field, particularly relate to the control system of spacecraft power supply controller.
Background technology
Multiport converter, particularly three Port Translation devices, have important application in various fields such as space industry, vehicle electric field, photovoltaic system fields.Usually, multiple port can only a port one direction transmittability wherein, and can not transferring energy between other ports except this port.
Patent documentation 1(China Patent Publication No.: CN104868551A) propose a kind of moonlet MPPT control system based on FPGA, switching power circuit is connected with solar array, is lithium cell charging; Current sampling circuit, voltage sample circuit gather output current, the voltage signal of solar array respectively, through carrying out analog-to-digital conversion by A/D sample circuit after conditioning filtering, and send in FPGA, realize power tracking by FPGA to control, and export PWM ripple signal, normally worked by power tube drive circuit driving switch power circuit.But the program is applied to the input of sun battle array and battery exports, and is two-port converter, and is only applicable to small-power (moonlet).
Inventor's patent application formerly (China Patent Publication No. CN104993699A) proposes the two-way three Port Translation devices of a kind of novel non-isolated wide-voltage range and two-way multiport converter, as shown in Figures 1 and 2, this converter has the advantage of easily extensible, Width funtion adjustable range, high efficiency, high power density.On this basis, how carrying out the control of the PCU based on two-way three Port Translation devices, is problem demanding prompt solution.
Summary of the invention
In order to solve the problems of the prior art, the invention provides a kind of control system of two-way multiport converter of wide-voltage range.
The present invention realizes especially by following technical scheme:
Based on a PCU control system for the two-way multiport converter of wide-voltage range, described system comprises main power section, FPGA part, digital-to-analogue conversion part, voting circuit and controlled volume sample circuit; Wherein, described digital-to-analogue conversion part comprises A/D change-over circuit and D/A change-over circuit; Described main power section is made up of N number of main power conversion modules, each is the two-way three Port Translation devices of rate module employing initiatively, realize solar energy battle array SA, the adjustment of energy and scheduling between bus BUS and battery BAT, carry out power expansion by parallel connection between described N number of main power model; Described FPGA part comprises N number of FPGA module, corresponding with described N number of active rate module; The controlled volume of power section described in described controlled volume sampling circuit samples, is supplied to described FPGA part by A/D change-over circuit, and the drive singal that described FPGA provides is by controlling described N number of main power model respectively after D/A change-over circuit; Described FPGA part, as the control core of described system, makes the converter of described main power model realize following functions by control algolithm and control logic:
When power output is greater than input power, input SA end carries out MPPT, improves capacity usage ratio, for the Energy control of equal power output, with MPPT function power-supply controller of electric needed for the volume and weight of SA that is equipped with reduce, reduce launch cost;
Bus exports according to setting voltage constant voltage, by the current-sharing of bus current between current-sharing algorithm realization N number of power model, and has same phase poor by each intermodule driving that algorithm makes FPGA export, reduces busbar voltage ripple;
Battery side realizes constant current charge and trickle charge, and each intermodule FPGA being exported by algorithm drives has same phase poor, reduces battery current ripple, extending battery life.
As a further improvement on the present invention, described two-way three Port Translation devices, comprise switching tube element Q
1, Q
2, Q
3, Q
4, Q
5, Q
6, inductance L
1, L
2; Wherein, Q
1collector electrode as the first port of converter, Q
1emitter connect Q
2collector electrode, Q
2grounded emitter; Q
3collector electrode as the second port of converter, Q
3emitter connect Q
4collector electrode, Q
4grounded emitter; Q
5collector electrode as the 3rd port to converter, Q
5emitter connect Q
6collector electrode, Q
6grounded emitter; The L of inductance
1one end connects Q
1emitter, L
1the other end connect Q
3emitter, the L of inductance
2one end connects Q
3emitter, L
2the other end connect Q
5emitter.
As a further improvement on the present invention, provided by the phase shift function module of FPGA and with phase shifting angle be
360/Nthe N group drive singal of degree.
As a further improvement on the present invention, when SA illumination condition is almost consistent, only sample to the controlled volume of a power model, all the other modules only need sample bus current to realize current-sharing; Provided by the phase shift function module of FPGA and with phase shifting angle be
360/Nthe N group drive singal of degree, controls N number of main power model respectively.
As a further improvement on the present invention, arranging one in described N number of main power model is main power model, other N-1 position is from power model, and the drive singal that described FPGA provides is by connecting voting circuit after D/A change-over circuit, and the output of voting circuit controls described N number of main power model respectively; Sample to a main power model, described sampled signal enters corresponding FPGA, and from a power model sampled current value, described N number of FPGA backups each other.
As a further improvement on the present invention, described N is 3, and described voting circuit is three get two voting circuits.
As a further improvement on the present invention, the output of described voting circuit is a switch controlling signal, and this control signal, by equal flow algorithm or Phase-shifting algorithm, obtains the control signal of N number of power model respectively, and outputs to N number of power model by D/A; There is equal phase shifting angle in the switch phase of described N number of module.
As a further improvement on the present invention, described equal flow algorithm, according to each module busbar electric current and bus current mean value, calculates error amount, to this error amount carry out digital PI or separately proportional component obtain correction value
ε i , this correction value acts on output duty cycle.
As a further improvement on the present invention, described controlled volume sampling comprises: SA current sample
i sA , SA voltage sample
u sA , bus current sampling
i bUS , busbar voltage sampling
u bUS , battery current sampling
i bAT , battery voltage sampling
u bAT .
Accompanying drawing explanation
Fig. 1 is three bidirectional port converter topology schematic diagrames of control system of the present invention;
Fig. 2 is many bidirectional ports converter topology schematic diagram;
Fig. 3 is the space power controller control configuration diagram based on FPGA;
Fig. 4 three gets two voting circuit schematic diagrames;
Fig. 5 is FPGA internal control strategy schematic diagram of the present invention;
Fig. 6 (a) is current-sharing algorithm flow chart;
Fig. 6 (b) is the input and output schematic diagram of equal flow algorithm;
Fig. 7 is the PCU control system block diagram based on three Port Translation devices of the present invention.
Embodiment
Illustrate below in conjunction with accompanying drawing and embodiment the present invention is further described.
As shown in Figure 3, the space power controller based on FPGA controls framework primarily of main power section, FPGA part and number, mode convertion part composition.Wherein, main power section has N number of main power conversion modules; Adopt two-way three Port Translation devices of wide-voltage range as shown in Figure 1, realize SA(solar energy battle array), BUS(bus) and BAT(battery) between the adjustment of energy and scheduling, carry out power expansion by parallel connection between N number of main power model.FPGA part comprises N number of FPGA module, and corresponding with N number of active rate module, FPGA, as the control core of this power-supply controller of electric, makes converter realize following functions by control algolithm and control logic:
When u power output is greater than input power, input SA end carries out MPPT(MPPT maximum power point tracking), improve capacity usage ratio, for the Energy control of equal power output, with MPPT function power-supply controller of electric needed for the volume and weight of SA that is equipped with reduce, reduce launch cost;
U bus exports according to setting voltage constant voltage, by the current-sharing of bus current between current-sharing algorithm realization N number of power model, and has same phase poor by each intermodule driving that algorithm makes FPGA export, reduces busbar voltage ripple.
U battery side can realize constant current charge and trickle charge (constant voltage charge), and each intermodule FPGA being exported by algorithm drives has same phase poor, reduces battery current ripple, extending battery life.
As optimal design, when SA illumination condition is almost consistent, only can sample to the controlled volume of a power model, be provided by FPGA and with phase shifting angle be
360/Nthe N group drive singal of degree, control N number of main power model respectively, the bus current that all the other modules only need be sampled is to realize current-sharing.Be main power model by arranging one in N number of main power model, other N-1 position is from power model.Consider in space power controller space motion environment to there is single-particle inversion and Flouride-resistani acid phesphatase risk, have employed Redundancy Design, the drive singal that FPGA provides is by connecting voting circuit after D/A change-over circuit, and the output of voting circuit controls described N number of main power model respectively; Sample to a main power model, described sampled signal enters corresponding FPGA, and from a power model sampled current value, described N number of FPGA backups each other.
For 3 power models, voting circuit is three get two voting circuits, and namely three FPGA module calculate simultaneously, gets two voting circuits export an effective value and be given to converter by three.The output of voting circuit is a switch controlling signal, and this control signal, by equal flow algorithm or Phase-shifting algorithm, obtains the control signal of N number of power model respectively, and outputs to N number of power model by D/A; There is equal phase shifting angle in the switch phase of described N number of module, phase difference equal in other words.
Fig. 4 shows the schematic diagram that three get two voting circuits, give the output state of the circuit as V1>V2>V3.Get two voting circuits by three and can ensure that in three tunnel inputs, effective value, as exporting, improves the reliability of power-supply controller of electric.
Figure 5 provides FPGA internal control strategy schematic diagram, wherein DPLL is digital phase-locked loop, and DPWM is digital modulation module, and phase shift function module realizes the phase shift of multiple intermodule, and relay protective scheme module is carried out Logic judgment and realized defencive function.
It should be noted that the equal flow algorithm of bus current wherein, as accompanying drawing 6(a) shown in, according to each module busbar electric current and bus current mean value, error amount need be calculated, digital PI(or independent proportional component are carried out to this error amount) obtain correction value
ε i , this correction value acts on output duty cycle as shown in Figure 6 (b), and this algorithm can each module busbar electric current of automatic equalization.
Based on the introduction of accompanying drawing 3-6, the present invention gives the PCU control system block diagram of the detailed two-way three Port Translation devices based on wide-voltage range by accompanying drawing 7, it should be noted that, three ports of the two-way three Port Translation devices of wide-voltage range, to input and output SA, BUS and BAT, can select arbitrarily certain Single port to be connected to converter, i.e. not specific order.The present invention gives the control framework that multiple module paralleling realizes, can be applicable to small-power and also can be applicable to high-power.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. based on a spacecraft power supply controller control system for the two-way multiport converter of wide-voltage range, it is characterized in that: described system comprises main power section, FPGA part, digital-to-analogue conversion part, voting circuit and controlled volume sample circuit; Wherein, described digital-to-analogue conversion part comprises A/D change-over circuit and D/A change-over circuit; Described main power section is made up of N number of main power conversion modules, each is the two-way three Port Translation devices of rate module employing initiatively, realize solar energy battle array SA, the adjustment of energy and scheduling between bus BUS and battery BAT, carry out power expansion by parallel connection between described N number of main power model; Described FPGA part comprises N number of FPGA module, corresponding with described N number of active rate module; The controlled volume of power section described in described controlled volume sampling circuit samples, is supplied to described FPGA part by A/D change-over circuit, and the drive singal that described FPGA provides is by controlling described N number of main power model respectively after D/A change-over circuit; Described FPGA part, as the control core of described system, makes the converter of described main power model realize following functions by control algolithm and control logic:
When power output is greater than input power, input SA end carries out MPPT, improves capacity usage ratio, for the Energy control of equal power output, with MPPT function power-supply controller of electric needed for the volume and weight of SA that is equipped with reduce, reduce launch cost;
Bus exports according to setting voltage constant voltage, by the current-sharing of bus current between current-sharing algorithm realization N number of power model, and has same phase poor by each intermodule driving that algorithm makes FPGA export, reduces busbar voltage ripple;
Battery side realizes constant current charge and trickle charge, and each intermodule FPGA being exported by algorithm drives has same phase poor, reduces battery current ripple, extending battery life.
2. control system according to claim 1, is characterized in that: described two-way three Port Translation devices, comprise switching tube element Q
1, Q
2, Q
3, Q
4, Q
5, Q
6, inductance L
1, L
2; Wherein, Q
1collector electrode as the first port of converter, Q
1emitter connect Q
2collector electrode, Q
2grounded emitter; Q
3collector electrode as the second port of converter, Q
3emitter connect Q
4collector electrode, Q
4grounded emitter; Q
5collector electrode as the 3rd port to converter, Q
5emitter connect Q
6collector electrode, Q
6grounded emitter; The L of inductance
1one end connects Q
1emitter, L
1the other end connect Q
3emitter, the L of inductance
2one end connects Q
3emitter, L
2the other end connect Q
5emitter.
3. control system according to claim 2, is characterized in that: described two-way three Port Translation devices also comprise filter capacitor C
1, C
2, C
3, wherein, electric capacity C
1one end connect the first port, C
1other end ground connection, electric capacity C
2one end connect the second port, C
2other end ground connection, electric capacity C
3one end connect the 3rd port, C
3other end ground connection.
4. control system according to claim 1, is characterized in that: provided by the phase shift function module of FPGA and with phase shifting angle be
360/Nthe N group drive singal of degree.
5. control system according to claim 1, is characterized in that: when SA illumination condition is almost consistent, only samples to the controlled volume of a power model, and all the other modules only need sample bus current to realize current-sharing; Provided by the phase shift function module of FPGA and with phase shifting angle be
360/Nthe N group drive singal of degree, controls N number of main power model respectively.
6. control system according to claim 1, it is characterized in that: arranging one in described N number of main power model is main power model, other N-1 position is from power model, the drive singal that described FPGA provides is by connecting voting circuit after D/A change-over circuit, and the output of voting circuit controls described N number of main power model respectively; Sample to a main power model, described sampled signal enters corresponding FPGA, and from a power model sampled current value, described N number of FPGA backups each other.
7. control system according to claim 6, is characterized in that: described N is 3, and described voting circuit is three get two voting circuits.
8. control system according to claim 6, it is characterized in that: the output of described voting circuit is a switch controlling signal, this control signal, by equal flow algorithm or Phase-shifting algorithm, obtains the control signal of N number of power model respectively, and outputs to N number of power model by D/A; There is equal phase shifting angle in the switch phase of described N number of module.
9. control system according to claim 1, is characterized in that: described equal flow algorithm, according to each module busbar electric current and bus current mean value, calculates error amount, to this error amount carry out digital PI or separately proportional component obtain correction value
ε i , this correction value acts on output duty cycle.
10. control system according to claim 1, is characterized in that: described controlled volume sampling comprises: SA current sample
i sA , SA voltage sample
u sA , bus current sampling
i bUS , busbar voltage sampling
u bUS , battery current sampling
i bAT , battery voltage sampling
u bAT .
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|---|---|---|---|
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|---|---|---|---|
| CN201510989359.0A CN105391301B (en) | 2015-12-25 | 2015-12-25 | A kind of PCU control system of the two-way multiport converter based on wide-voltage range |
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| CN105391301B CN105391301B (en) | 2019-03-01 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107896058A (en) * | 2017-11-14 | 2018-04-10 | 深圳市航天新源科技有限公司 | Non-isolated multiport converter |
| CN107919667A (en) * | 2017-10-16 | 2018-04-17 | 深圳市航天新源科技有限公司 | A kind of two domain low ripple control methods of power-supply controller of electric PCU |
| CN107947148A (en) * | 2017-12-13 | 2018-04-20 | 深圳市航天新源科技有限公司 | The more busbar frameworks of power-supply controller of electric |
| CN108023380A (en) * | 2017-12-13 | 2018-05-11 | 深圳市航天新源科技有限公司 | Power-supply controller of electric single busbar framework |
| CN108233421A (en) * | 2018-02-05 | 2018-06-29 | 华为技术有限公司 | Photovoltaic generating system and photovoltaic electric power distribution |
| CN108445800A (en) * | 2018-03-14 | 2018-08-24 | 上海空间电源研究所 | A kind of number PCU power-supply systems |
| CN109672357A (en) * | 2018-12-14 | 2019-04-23 | 苏州诺威特测控科技有限公司 | A kind of bearing calibration of the more power module parallel current imbalances of single crystal growing furnace power supply |
| CN110148995A (en) * | 2019-04-17 | 2019-08-20 | 上海空间电源研究所 | A kind of spacecraft reconstruction power-supply system framework |
| CN111711362A (en) * | 2020-06-11 | 2020-09-25 | 深圳市航天新源科技有限公司 | Modulation method of three-port topological circuit |
| CN112098766A (en) * | 2020-11-09 | 2020-12-18 | 西南交通大学 | Multimode cascade DAB power fluctuation on-line evaluation method based on differential fitting |
| US11817701B2 (en) | 2021-01-29 | 2023-11-14 | Eaton Intelligent Power Limited | Multi-port split-phase power system |
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| CN107919667B (en) * | 2017-10-16 | 2021-04-06 | 深圳市航天新源科技有限公司 | Power controller PCU two-domain low-ripple control method |
| CN107919667A (en) * | 2017-10-16 | 2018-04-17 | 深圳市航天新源科技有限公司 | A kind of two domain low ripple control methods of power-supply controller of electric PCU |
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| CN108445800A (en) * | 2018-03-14 | 2018-08-24 | 上海空间电源研究所 | A kind of number PCU power-supply systems |
| CN109672357A (en) * | 2018-12-14 | 2019-04-23 | 苏州诺威特测控科技有限公司 | A kind of bearing calibration of the more power module parallel current imbalances of single crystal growing furnace power supply |
| CN110148995A (en) * | 2019-04-17 | 2019-08-20 | 上海空间电源研究所 | A kind of spacecraft reconstruction power-supply system framework |
| CN110148995B (en) * | 2019-04-17 | 2022-12-16 | 上海空间电源研究所 | Reconfigurable power supply system architecture of spacecraft |
| CN111711362A (en) * | 2020-06-11 | 2020-09-25 | 深圳市航天新源科技有限公司 | Modulation method of three-port topological circuit |
| CN112098766A (en) * | 2020-11-09 | 2020-12-18 | 西南交通大学 | Multimode cascade DAB power fluctuation on-line evaluation method based on differential fitting |
| US11817701B2 (en) | 2021-01-29 | 2023-11-14 | Eaton Intelligent Power Limited | Multi-port split-phase power system |
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