CN103956894B - A kind of direct current distributed power supply system and its control method based on three Port Translation devices - Google Patents
A kind of direct current distributed power supply system and its control method based on three Port Translation devices Download PDFInfo
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Abstract
The invention discloses a kind of direct current distributed power supply system and its control method based on three Port Translation devices, belongs to Technics of Power Electronic Conversion and distributed power supply system field.The power conversion unit (20) that the system includes the direct-current input power supplying (10) being made up of N number of sub- direct-current input power supplying and is made up of N number of sub three Port Translations device, N is the natural number more than 1, a son three Port Translation device is concatenated per individual sub- direct-current input power supplying, output end voltage bus is connected to per the output end of three Port Translation device of height, energy storage terminal voltage bus is connected to per the energy storage end of three Port Translation device of height.Charging and discharging state of the present invention according to energy storage device, flowed using energy storage end when energy storage device discharges, when energy storage device charges using the Hybrid Power-Aware control strategy for distributing output end power according to respective input power watt level, realize stable, the reliability service of system.
Description
Technical field
The present invention relates to a kind of electric power system, more particularly to a kind of direct current distributed power supply system based on three Port Translation devices
System and its control method, belong to Technics of Power Electronic Conversion and distributed power supply system field.
Background technology
With energy crisis and problem of environmental pollution it is increasingly serious, new forms of energy such as solar energy, wind energy, fuel cell and can be again
The development and utilization of the raw energy obtains more and more extensive concern, and distributed generation system has become countries in the world concern and studied
Focus.Due to the generation of electricity by new energy device such as solar cell, to there is supply of electric power unstable, discontinuous and become with environmental condition
The shortcomings of change, need to be equipped with energy storage device peak power is provided and excess energy is reclaimed, it is ensured that the continuity and reliability of power supply
Property.
Current direct current distributed power supply system mainly realizes distributed parallel connection at DC/DC converters, i.e. each point
Cloth generation of electricity by new energy device is all connected with a DC/DC converter, by each energy conversion into direct current output, is connected in parallel public
It is load supplying on dc bus.Each DC/DC converter realizes maximal power tracing, it is to avoid each input source in centralized configuration
Between influence each other, to greatest extent improve system input power overall transformation efficiency.Meanwhile, energy storage device and public direct-current
Also need to two-way DC/DC converters to connect between bus, to realize that power bi-directional is transmitted.However, from each input source to energy storage
During device through-put power, two stage power is needed to convert, so as to reduce the whole efficiency of system.
The content of the invention
Goal of the invention：
The present invention is directed to the deficiencies in the prior art, there is provided a kind of direct current distributed power supply system based on three Port Translation devices
And its control method.
Technical scheme：
The present invention is adopted the following technical scheme that for achieving the above object：
The direct current distributed power supply system based on three Port Translation devices of the present invention, including the change of direct-current input power supplying, power
Change unit, output end voltage bus and energy storage terminal voltage bus, it is characterised in that：The direct-current input power supplying includes that N number of son is straight
Stream input power, the power conversion unit include N number of sub three Port Translations device, and N is the natural number more than 1, per individual sub- direct current
Input power concatenates three Port Translation device of a son, is connected to output end voltage per the output end of three Port Translation device of height
Bus, is connected to energy storage terminal voltage bus per the energy storage end of three Port Translation device of height.
The direct-current input power supplying is direct voltage source or renewable energy source current.
The three Port Translations device is three Port Translation device of three Port Translation device of isolated form or non-isolation type.
The three Port Translations device includes a DC voltage input end, an output end and an energy storage end, wherein storing up
Energy end is bidirectional power port, and output end is unidirectional power port or bidirectional power port.
Based on the control method of above-mentioned direct current distributed power supply system, the control method phase of all sub three Port Translations devices
Together, its control process is divided into the following two kinds situation：
A. when energy storage device is in discharge condition, the control strategy that each sub three Port Translations device is flowed using energy storage end,
Concrete control process is as follows：
Using the mean value or maximum of each sub three Port Translations device energy storage end electric current as energy storage end current equalizing bus bar voltage letter
Number vib_bus, Setting signal of the signal as each sub three Port Translations device energy storage end electric current, with each sub three Port Translations device energy storage
End current feedback signal ibBoth error signals v are obtained after the equal throttle regulator in energy storage end is adjustedBCS, the error signal with
Reference voltage vorefAfter superposition as the sub three Port Translations device output end voltage Setting signal, with the sub three Port Translations device
Output end voltage feedback signal voBoth error signals v are obtained after output end voltage adjuster is adjustedc, the error signal
Drive signal is intercepted as the control signal and carrier signal friendship of output end voltage, so as to realize the sub three Port Translations device
Control；
B., when energy storage device is in charged state, each sub three Port Translations device is using big according to respective input power power
The control strategy of little distribution output end power, concrete control process are as follows：
By the output end current i of each sub three Port Translations deviceoDivided by respective input power power pinStandardization is carried out, is obtained
To the output end current perunit value i of each sub three Port Translations device* o, with the flat of each sub three Port Translations device output end current perunit value
Average or maximum are used as output end perunit current equalizing bus bar voltage signal v* io_bus, the signal is defeated as each sub three Port Translations device
Go out to hold the Setting signal of perunit electric current, with each sub three Port Translations device output end perunit current signal i* oThrough output end perunit electricity
Flow after equal throttle regulator is adjusted and obtain both error signals vOCS, the error signal and reference voltage vorefConduct after superposition should
The Setting signal of sub three Port Translation device output end voltages, with sub three Port Translations device output end voltage feedback signal voThrough
Output end voltage adjuster obtains both error signals v after adjustingc, control signal of the error signal as output end voltage
Hand over carrier signal and intercept drive signal, so as to realize the control of the sub three Port Translations device.
The present invention has the advantages that：
(1) due to using distributed DC input power, reducing influencing each other between each sub- direct-current input power supplying, carrying
The high effect of system maximal power tracing；
(2) single-stage power conversion is from each direct-current input power supplying to the power conversion of energy storage device, improve system
Whole efficiency；
(3) structure of system is simplified as the basic component units of system using three Port Translation device of integrated form, is improved
The reliability of system；
(4) when being discharged using energy storage device energy storage end flow, energy storage device charge when it is big according to respective input power power
The Hybrid Power-Aware control strategy of little distribution output end power, it is ensured that stable, reliability service of the system under different operating modes.
Description of the drawings
Direct current distributed power supply system example structure schematic diagram based on three Port Translation devices of the accompanying drawing 1 for the present invention；
The electric operation control circuit figure of sub three Port Translation devices when accompanying drawing 2 is energy storage device discharge condition of the present invention；
The electric operation control circuit figure of sub three Port Translation devices when accompanying drawing 3 is energy storage device charged state of the present invention；
Accompanying drawing 4 is that the structure of the direct current distributed power supply system that two three Port Translation devices of embodiments of the invention are constituted is shown
It is intended to；
Accompanying drawing 5 is three Port Translation device circuit theory diagrams of synchronous rectification formula half-bridge in the present embodiment；
Accompanying drawing 6 is experimental result when the present embodiment normally runs；
Symbol description in the figures above：10- direct-current input power supplyings；20- power conversion units；vin1～vinN- the 1～N number of
Sub- direct-current input power supplying voltage；iin1～iinN- the 1～N number of sub- direct-current input power supplying electric current；pin1～pinN- the 1～N number of son is straight
Stream input power power；ib1～ibN- the 1～N number of sub three Port Translations device energy storage end electric current；vo1～voN- the 1～N number of sub three end
Mouth converter output terminal voltage；io1～ioN- the 1～N number of sub three Port Translations device output end current；i* o1～i* oN- the 1～N number of
Sub three Port Translation device output end current perunit values；vib_bus- three Port Translation device energy storage end current equalizing bus bar voltages；v* io_bus- three
Port Translation device output end perunit current equalizing bus bar voltage；voref1～vorefN- the 1～N number of sub three Port Translations device output end voltage
A reference value；The equal throttle regulator in energy storage end of the 1st～N number of sub three Port Translations devices of BCS1～BCSN-；1～N of OVR1～OVRN-
The output end voltage adjuster of three Port Translation device of height；The output end of the 1st～N number of sub three Port Translations devices of OCS1～OCSN-
The equal throttle regulator of perunit electric current；vBCS1～vBCSNThe equal throttle regulator output electricity in energy storage end of-the 1～N number of sub three Port Translations device
Pressure；vOCS1～vOCSNThe equal throttle regulator output voltage of output end perunit electric current of-the 1～N number of sub three Port Translations device；vc1~
vcN- the 1～N number of sub three Port Translations device output end control voltage；PV1, PV2-1#, 2# sub-light photovoltaic array；C1、C2- input filter
Ripple electric capacity；Q1～Q4- switching tube；Co- output filter capacitor；Lo- output inductor；Ro- output loading；vo- output voltage；
io- output current；po- power output.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
The direct current distributed power supply system structure based on three Port Translation devices of the embodiment of the present invention as shown in figure 1, including
Direct-current input power supplying 10, power conversion unit 20, output end voltage bus and energy storage terminal voltage bus, wherein：Direct current input electricity
Using the photovoltaic array in renewable energy source current, altogether including N number of sub-light photovoltaic array, power conversion unit 20 includes N number of in source 10
Sub three Port Translation devices, N is the natural number more than 1, and the output end of each sub-light photovoltaic array concatenates three Port Translation of son
Device, is connected to output end voltage bus per the output end of three Port Translation device of height, per the energy storage of three Port Translation device of height
End is connected to energy storage terminal voltage bus.
Based on the control method of the direct current distributed power supply system of above-described embodiment, the control of all sub three Port Translations devices
Method is identical, and its control process is divided into the following two kinds situation：
A. when energy storage device is in discharge condition, the control strategy that each sub three Port Translations device is flowed using energy storage end：
Energy storage device discharges, and shows that output end power is more than each input power sum, now the equal work of each sub-light photovoltaic array
Make in maximum power output state；When using energy storage end sharing control, the energy storage end sense of current of each sub three Port Translations device
It is identical with size, there is no circulation each other；It is equal according to the power at the three end power system conservation of energys, input and energy storage end
For known and controllable, then the power of each output end is also to determine；
B., when energy storage device is in charged state, each sub three Port Translations device is using big according to respective input power power
The control strategy of little distribution output end power：
Energy storage device charges, and shows output end power less than the peak power sum that each sub-light photovoltaic array can be provided, this
When part sub-light photovoltaic array can be operated in non-maximum power output state；When the output end work(of each sub three Port Translations device module
When rate is allocated according to its input power size, according to the conservation of energy, the power at its energy storage end is also according to identical
Ratio is allocated, therefore the power distribution result of each power path of system is unique.
2～accompanying drawing, 3 pairs of Power Control sides based on the direct current distributed power supply system of above-described embodiment below in conjunction with the accompanying drawings
Method is made a concrete analysis of.
It is the electric operation control circuit figure of three Port Translation devices of son when energy storage device of the present invention is in discharge condition as shown in Figure 2.This
Outer shroud, the current equalizing structure of output voltage inner ring, wherein energy storage current equalizing bus bar voltage producing method are flowed using energy storage in embodiment
To average, and flow equalizing ring and Voltage loop adopt pi regulator structure.
By taking the control of k-th sub three Port Translations device as an example, its energy storage end when energy storage device discharges is discussed in detail and flows
The detailed process of control.
Energy storage end current equalizing bus bar voltage signal (vib_bus) producing method to average, i.e.,：
Setting signal of the signal as each sub three Port Translations device energy storage end electric current, three Port Translations device with k-th
Energy storage end current feedback signal (ibk) both error signals are obtained after the equal throttle regulator in energy storage end (BCSk) is adjusted
(vBCSk), the error signal and reference voltage (vorefk) after superposition as the sub three Port Translations device output end voltage given letter
Number, with the sub three Port Translations device output end voltage feedback signal (vok) after output end voltage adjuster (OVRk) is adjusted
To both error signals vck, the error signal intercepts to drive with carrier signal friendship as the control signal of output end voltage to be believed
Number, so as to realize the control of the sub three Port Translations device.
It is the electric operation control circuit figure of three Port Translation devices of son when energy storage device of the present invention is in charged state as shown in Figure 3.This
Outer shroud, the current equalizing structure of output voltage inner ring are flowed using output end perunit electric current in embodiment, wherein output end perunit flows
Busbar voltage producing method is to average, and flow equalizing ring and Voltage loop adopt pi regulator structure.
By taking the control of k-th sub three Port Translations device as an example, which is discussed in detail when energy storage device charges according to each defeated
Enter the detailed process that power size distributes output end power.
The output end current of each sub three Port Translations device module is carried out into perunit divided by respective input power power first
Change, obtain its output end current perunit value：
Then each output end current perunit value to obtaining carries out Balance route, using similar energy storage end sharing control knot
Structure, the producing method of output end perunit current equalizing bus bar voltage are to average, i.e.,：
Setting signal of the signal as each sub three Port Translations device output end perunit electric current, three port sub with k-th become
Output end current perunit value (the i of parallel operation module* ok) compare, after the equal throttle regulator (OCSk) of output end perunit electric current is adjusted
Obtain both error signal (vOCSk), the error signal and reference voltage (vorefk) after superposition as the sub three Port Translations device
The Setting signal of output end voltage, with the sub three Port Translations device output end voltage feedback signal (vok) adjust through output end voltage
Section device (OVRk) obtains both error signals v after adjustingck, control signal and carrier wave of the error signal as output end voltage
Signal is handed over and intercepts drive signal, so as to realize the control of the sub three Port Translations device.
A kind of embodiment of the present invention is the direct current distributed power supply system being made up of two three Port Translation devices, wherein storing up
Can device be battery, load for resistive load, its system structure diagram is as shown in Figure 4.Two three Port Translation devices of son
Input be respectively connected to two sub- photovoltaic array PV1 and PV2, energy storage end and output end are connected in parallel respectively.
In the present embodiment, each sub three Port Translations device chooses three Port Translation device topology of synchronous rectification formula half-bridge, physical circuit
Schematic diagram is as shown in Figure 5.Wherein, Q3And Q4Respectively Q1And Q2Synchronous rectifier, control Q respectively1And Q2Dutycycle come real
The control of existing input (energy storage end) and output end voltage.
System architecture and control method based on the present invention, experimental result such as Fig. 6 institute of the present embodiment in normal operation
Show.In figure, ib1And ib2The energy storage end electric current of respectively two three Port Translation devices of son, voAnd ioThe output end of respectively system is electric
Pressure and output end current, now the watt level relation of two inputs is pin1＞ pin2.It will be appreciated from fig. 6 that increasing in output end power
Plus before, system is in battery state of charge, now according to respective sub three Port Translations device input watt level distribution power,
There is ib1＞ ib2；After output end power increases, battery is in discharge condition, now using energy storage end sharing control, has ib1=
ib2；Simultaneously in output end changed power moment, output end voltage is kept approximately constant, it is ensured that the stable power-supplying of load end.It is real
Test result to show, using the system architecture and control method of the present invention, it is possible to achieve the stable of system, reliability service.
Claims (1)
1. a kind of control method of the direct current distributed power supply system based on three Port Translation devices, the system include direct current input electricity
Source (10), power conversion unit (20), output end voltage bus and energy storage terminal voltage bus, direct-current input power supplying (10) bag
N number of sub- direct-current input power supplying is included, the power conversion unit (20) includes N number of sub three Port Translations device, and N is the nature more than 1
Number, concatenates three Port Translation device of a son per individual sub- direct-current input power supplying, connects per the output end of three Port Translation device of height
Output end voltage bus is connected to, and energy storage terminal voltage bus is connected to per the energy storage end of three Port Translation device of height；The direct current
Input power (10) is direct voltage source or renewable energy source current；The three Port Translations device is three Port Translation device of isolated form
Or three Port Translation device of non-isolation type；The three Port Translations device includes a DC voltage input end, an output end and
Individual energy storage end, wherein energy storage end are bidirectional power ports, and output end is unidirectional power port or bidirectional power port；Described base
It is as follows in the control method of the direct current distributed power supply system of three Port Translation devices, the control method of all sub three Port Translations devices
Identical, its control process is divided into the following two kinds situation：
A. when energy storage terminal voltage bus is in discharge condition, the control plan that each sub three Port Translations device is flowed using energy storage end
Slightly, concrete control process is as follows：Mean value or maximum using each sub three Port Translations device energy storage end electric current is equal as energy storage end
Stream bus voltage signal vib_bus, Setting signal of the signal as each sub three Port Translations device energy storage end electric current, with each sub three end
Mouth converter energy storage end current feedback signal ibBoth error signals v are obtained after the equal throttle regulator in energy storage end is adjustedBCS,
The error signal and reference voltage vorefAfter superposition as the sub three Port Translations device output end voltage Setting signal, with the son
Three Port Translation device output end voltage feedback signals voBoth error signals are obtained after output end voltage adjuster is adjusted
vc, the error signal intercepts drive signal with carrier signal friendship as the control signal of output end voltage, so as to realize the son
The control of three Port Translation devices；
B., when energy storage terminal voltage bus is in charged state, each sub three Port Translations device is using according to respective input power power
Size distributes the control strategy of output end power, and concrete control process is as follows：By the output end current of each sub three Port Translations device
ioDivided by respective input power power pinStandardization is carried out, the output end current perunit value i of each sub three Port Translations device is obtained* o, using the mean value or maximum of each sub three Port Translations device output end current perunit value as output end perunit current equalizing bus bar electricity
Pressure signal v* io_bus, Setting signal of the signal as each sub three Port Translations device output end perunit electric current, with each sub three port
Converter output terminal perunit current signal i* oBoth error letters are obtained after the equal throttle regulator of output end perunit electric current is adjusted
Number vOCS, the error signal and reference voltage vorefAfter superposition as the sub three Port Translations device output end voltage Setting signal,
With sub three Port Translations device output end voltage feedback signal voBoth mistakes are obtained after output end voltage adjuster is adjusted
Difference signal vc, the error signal intercepts drive signal with carrier signal friendship as the control signal of output end voltage, so as to reality
The now control of the sub three Port Translations device.
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| CN105375552B (en) * | 2015-09-01 | 2017-03-15 | 西安特锐德智能充电科技有限公司 | A kind of power matching method of matrix form power distribution charging system |
| CN106711994B (en) | 2017-01-09 | 2018-10-12 | 清华大学 | The control method and control system of distributed generation resource electricity generation system |
| CN111130131B (en) * | 2019-12-18 | 2021-11-19 | 安徽天尚清洁能源科技有限公司 | Double-bus micro-grid complementary power supply system |
| CN111224392A (en) * | 2020-01-03 | 2020-06-02 | 云南电网有限责任公司电力科学研究院 | Three-port direct current energy router power coordination control method |
| CN111628650B (en) * | 2020-06-16 | 2021-10-08 | 西安微电子技术研究所 | DC/DC circuit, SIMO converter, microsatellite power supply system and working method |
| CN113922671B (en) * | 2021-10-21 | 2023-07-21 | 国网经济技术研究院有限公司 | Three-port flexible direct-current transmission DC-DC converter and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102290999A (en) * | 2011-08-15 | 2011-12-21 | 南京航空航天大学 | Multi-port isolating bidirectional DC-DC (direct current to direct current) converter |
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| CN102290999A (en) * | 2011-08-15 | 2011-12-21 | 南京航空航天大学 | Multi-port isolating bidirectional DC-DC (direct current to direct current) converter |
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| Title |
|---|
| 半桥三端口变换器并联控制;张君君等;《南京航空航天大学学报》;20140228;第46卷(第1期);第145页第1.1节、第147页第2.1节、图1、5 * |
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