CN207518281U - A kind of battery energy storage system of two-way flyback primary side integrated form - Google Patents
A kind of battery energy storage system of two-way flyback primary side integrated form Download PDFInfo
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- CN207518281U CN207518281U CN201721412841.9U CN201721412841U CN207518281U CN 207518281 U CN207518281 U CN 207518281U CN 201721412841 U CN201721412841 U CN 201721412841U CN 207518281 U CN207518281 U CN 207518281U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 238000004804 winding Methods 0.000 claims description 38
- 239000003990 capacitor Substances 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 6
- 238000011217 control strategy Methods 0.000 claims description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 2
- 229910018095 Ni-MH Inorganic materials 0.000 claims description 2
- 229910018477 Ni—MH Inorganic materials 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 229910001416 lithium ion Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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Abstract
The utility model discloses a kind of battery energy storage system of two-way flyback primary side integrated form, including battery unit, main power inverter, auxiliary power conversion and control circuit；The battery unit is connected in series by n group battery modules, described main power inverter one end and battery units in parallel, the other end accesses three phase network, the auxiliary power conversion includes primary side integrated form high frequency transformer, primary side converter and secondary converter, primary side converter one end is connected with battery unit, and the other end is connected with primary side integrated form high frequency transformer；One end of secondary converter is connected with primary side integrated form high frequency transformer, and the other end is connected with battery module；Control circuit is connect respectively with main power inverter, auxiliary power conversion.The utility model can guarantee the separate current control of battery module, improve the inconsistency of series-connected battery modules, to realize that maximum capacity usage ratio is realized, extend the service life of battery module, and easily scale to more battery module series connection.
Description
Technical field
The utility model is related to converters field, more particularly to a kind of battery of two-way flyback primary side integrated form
Energy-storage system.
Background technology
Increasingly serious with global energy safety and weather variation issue, ecological, environmental protective problem increasingly highlights, with new energy
Source and intelligent grid are that the new round energy technology revolution of mark constantly breeds development.It is brought to solve intermittent energy source power generation
Energy fluctuation problem, energy storage technology is one of best-of-breed technology solved the problems, such as.Wherein, battery energy storage is easy for installation fast with its
The prompt, advantages such as construction period is short, extending capacity reformation (modularization) facilitates, have been obtained for extensive use.
Existing modular battery energy-storage system generally use total power independent control type flexibility energy-storage system in groups, no matter
The size of modular battery current difference, whole charging and discharging currents of battery cell will flow through respective converter switches device,
Cause device current stress big, the big constant power loss of conduction loss, particularly when power system capacity increases to larger base, problem
It is more prominent.It fluctuates in view of each battery module capacity at this stage, even echelon utilizes battery, holds in a certain range substantially
Measuring difference will not be too big, it is not necessary that the electric current of all batteries is independently controlled.The energy storage of the two-way single switch flyback of tradition
System, major part is balanced both for the inconsistency of battery cell, and voltage class is low, and in power switch pipe shutdown moment
Bear larger peak voltage.
Therefore, in view of the above-mentioned problems, in order to improve the input range of voltage, reduce the voltage stress of power switch pipe, carry
The flexible energy-storage system in groups that a kind of single battery Partial Power separate current more efficiently, economic, safe controls is gone out, no
The only trouble free service and service life of switching tube, and Topology Structure Design is simple, reduces loss and the cost of current transformer, to carry
The capacity usage ratio of high battery module.
Utility model content
The purpose of the utility model is to overcome, with deficiency, provide a kind of two-way flyback primary side the shortcomings that the prior art and integrate
The battery energy storage system of formula, the system is in battery unit in charging battery module and discharge process, only in principal current
5%-20% carries out closed loop control, reduces the loss of the control power of battery energy storage system, improves series-connected battery modules
Inconsistency extends the service life of battery module, improves energy content of battery utilization rate, and easily scale to more series-connected cells
Module.
The purpose of this utility model is realized by following technical solution：
A kind of battery energy storage system of two-way flyback primary side integrated form, including battery unit, main power inverter, auxiliary work(
Rate converter and control circuit；The battery unit is connected in series by n group battery modules, and n group battery modules are followed successively by B1、
B2、...、Bn, described main power inverter one end and battery units in parallel, other end access three phase network, the auxiliary power become
Parallel operation includes primary side integrated form high frequency transformer, primary side converter and secondary converter, wherein primary side converter one end and battery
Unit is connected, and the other end is connected with primary side integrated form high frequency transformer；One end of secondary converter becomes with primary side integrated form high frequency
Depressor is connected, and the other end is corresponding with battery module to be connected；Control circuit connects respectively with main power inverter, auxiliary power conversion
It connects.
The primary side integrated form high frequency transformer includes a primary side winding WpWith n vice-side winding, vice-side winding is successively
For W1、W2、...、Wn；And the sum of the number of turn of primary side winding and n vice-side winding number of turn are essentially identical, reach the no-load voltage ratio of transformer
Equal to 1；
The primary side converter includes the 7th switching tube Q7, the 8th switching tube Q8, the first fly-wheel diode VD1, the second afterflow
Diode VD2, DC capacitor Cp；Wherein the 7th switching tube Q7Drain terminal be connected to the anode of battery unit, the 7th switching tube
Q7Source terminal be connected to primary side winding WpFirst terminal, the 8th switching tube Q8Drain terminal be connected to battery unit
Cathode, the 8th switching tube Q8Source terminal connection primary side winding WpSecond terminal between, the moon of the first fly-wheel diode VD1
Pole is connected with the anode of battery unit, anode and the primary side winding W of the first fly-wheel diode VD1pSecond terminal be connected, second
The anode of fly-wheel diode VD2 is connected with the cathode of battery unit, cathode and the primary side winding W of the second fly-wheel diode VD2p's
First terminal is connected, DC capacitor CpWith battery unit and connecing；7th switching tube Q7, the 8th switching tube Q8Grid with control
Circuit is connected, and makes the 7th switching tube Q7, the 8th switching tube Q8Conducting controlled with turning off by control circuit；7th switching tube
Q7, the 8th switching tube Q8It is the switch mosfet pipe with anti-paralleled diode；
The secondary converter includes n separate unit, and each separate unit corresponds to a battery module respectively, wherein secondary
Side winding W1The separate unit connected includes the 9th switching tube Q9, DC capacitor C1, the 9th switching tube Q9Drain terminal connection
In vice-side winding W1Second terminal, vice-side winding W1First terminal be connected to the anode of corresponding battery module, the 9th switching tube
Q9Source terminal be connected to the cathode of corresponding battery module, DC capacitor C1With the parallel connection of corresponding battery module, the 9th switching tube Q9
Grid be connected with control circuit, make the 9th switching tube Q9Conducting controlled with turning off by control circuit；The 9th switching tube Q9
For the switch mosfet pipe with anti-paralleled diode；Remaining vice-side winding W2、...、WnThe structure of the separate unit connected is according to this
Analogize.
The main power inverter includes first switch pipe Q1, second switch pipe Q2, third switching tube Q3, the 4th switching tube
Q4, the 5th switching tube Q5, the 6th switching tube Q6, DC bus capacitor Cd, the first filter inductance La, the second filter inductance Lb, third filter
Wave inductance Lc, wherein first switch pipe Q1Transmitting collection terminal be connected to the first filter inductance LaFirst end, first switch pipe Q1
Collector terminal be connected to the anode of battery unit, second switch pipe Q2Transmitting collection terminal be connected to the negative of battery unit
Pole, second switch pipe Q2Collector terminal be connected to the first filter inductance LaFirst end, third switching tube Q3Transmitting collection end
Son is connected to the second filter inductance LbFirst end, third switching tube Q3Collector terminal be connected to the anode of battery unit,
Four switching tube Q4Transmitting collection terminal be connected to the cathode of battery unit, the 4th switching tube Q4Collector terminal be connected to second
Filter inductance LbFirst end, the 5th switching tube Q5Transmitting collection terminal be connected to third filter inductance LcFirst end, the 5th opens
Close pipe Q5Collector terminal be connected between the anode of battery unit, the 6th switching tube Q6Transmitting collection terminal be connected to battery
The cathode of unit, the 6th switching tube Q6Collector terminal be connected to third filter inductance LcFirst end, the first filter inductance
La, the second filter inductance Lb, third filter inductance LcSecond end be respectively connected to the U of three-phase AC gridaPhase, UbPhase, UcPhase；The
One switching tube Q1, second switch pipe Q2, third switching tube Q3, the 4th switching tube Q4, the 5th switching tube Q5, the 6th switching tube Q6Grid
Extremely it is connected with control circuit, makes first switch pipe Q1, second switch pipe Q2, third switching tube Q3, the 4th switching tube Q4, the 5th
Switching tube Q5, the 6th switching tube Q6Conducting controlled with turning off by control circuit；The first switch pipe Q1, second switch pipe Q2、
Third switching tube Q3, the 4th switching tube Q4, the 5th switching tube Q5, the 6th switching tube Q6It is that the IGBT with anti-paralleled diode is opened
Guan Guan.
The control circuit, the control strategy to main power inverter are the Duty ratio control electricity by controlling output signal
The principal current of pool unit, including sinusoidal pulse width modulation (SPWM), space vector pulse width modulation (SVPWM).
The control circuit, the control strategy to auxiliary power conversion are by the way that the duty ratio of output signal is controlled to realize
The charging and discharging currents of battery module and the difference value of principal current carry out closed loop control, including pulse width modulation (PWM), arteries and veins
Rush frequency modulation(PFM) (PFM).
The battery unit is to move back fortune battery or the battery of new production.
The battery unit includes lithium ion battery, lead-acid battery, ultracapacitor, Ni-MH battery.
The auxiliary power conversion is in battery module charge and discharge process, if battery module is in charged state, energy
The energy transmission of forward direction, i.e. primary side converter to secondary variator is transmitted as, in a PWM cycle, the 7th switching tube Q7With
8th switching tube Q8Switching tube simultaneously turns on, the 9th switching tube Q9In the state that is turned off, the first fly-wheel diode VD1 and second
Fly-wheel diode VD2 is by primary side winding WpElectric current linear rise stores energy, the 7th switching tube Q7With the 8th switching tube Q8It opens
It is simultaneously turned off after closing pipe conducting a period of time, the first fly-wheel diode VD1 and the second fly-wheel diode VD2 are connected immediately,
The primary side winding induced potential caused by leakage inductance is clamped down on, while leakage inductance energy makes secondary formation induced potential make secondary anti-
Parallel diode is connected, and energy flows into battery module, to charging battery module；If battery module is in discharge condition energy transmission
To be reversed, i.e. the energy transmission of secondary converter to primary side variator, in a PWM cycle, the 9th switching tube Q9In leading
Logical state, the 7th switching tube Q7With the 8th switching tube Q8Switching tube is in off state, vice-side winding W1Storage energy, the 9th
Switching tube Q9It is turned it off after conducting a period of time, leakage inductance energy, which makes primary side form induced potential, makes two fly-wheel diodes of primary side
It is connected, energy-feedback power grid, realizes the double-direction control of battery energy storage system, and only to battery module charging and discharging currents and principal current
Difference value carry out closed loop control.
The utility model compared with prior art, has the following advantages that and advantageous effect：
1st, the utility model utilizes the double-transistor flyback topological structure that primary side integrates, and improves input voltage range, and utilize
Two fly-wheel diodes reduce the voltage stress of power switch pipe, reduce conduction loss, and multiple poles are corresponded to meeting a primary side
In the case of limiting secondary, when needing to increase battery module, each battery module is only used in secondary and adds a flyback change
Parallel operation, primary side remain unchanged, and primary circuit will not be impacted, and largely simplify design difficulty, the design of transformer
The weight and volume of cost and transformer also mitigates therewith.
2nd, the utility model realizes difference currents using two-way dynamic equalizing technology in modular battery energy-storage system
Independent control can guarantee that system main-control power is small, and small, improvement series-connected battery modules inconsistency, raising battery is absolutely lost
Capacity usage ratio, and be easy to extend series-connected battery modules number；Meanwhile the Flyback configuration integrated using primary side, simplify transformer
Design, reduce the power device of circuit, main power inverter and auxiliary power conversion are simultaneously operable, and can also distinguish work
Make, be independent of each other, be suitble to the high-power grade in, high voltage class, the exigent energy-storage system applied field to utilization rate
It closes.
Description of the drawings
Fig. 1 is a kind of circuit diagram of the battery energy storage system of two-way flyback primary side integrated form described in the utility model.
Specific embodiment
The utility model is described in further detail with reference to embodiment and attached drawing, but the implementation of the utility model
Mode is without being limited thereto.
Such as Fig. 1, a kind of battery energy storage system of two-way flyback primary side integrated form, including battery unit 100, main power conversion
Device 200 and auxiliary power conversion 300；The battery unit 100 is connected by n groups battery module 110, and battery module 110 is supreme
B is named as under and1、B2、...、Bn, one end of the main changed power parallel operation 200 is in parallel with battery unit 100, other end access
Three phase network, the auxiliary power conversion 300 include primary side integrated form high frequency transformer 310, primary side converter 320 and secondary
Converter 330, wherein one end of primary side converter 320 and battery unit 100 simultaneously connect, the other end and primary side integrated form high frequency transformation
Device 310 is connected；One end of secondary converter 330 is connected with primary side integrated form high frequency transformer 310, the other end and battery module pair
It should be connected.
Main power inverter 200 is by six IGBT with anti-paralleled diode 220, DC bus capacitor CdAnd three filtering
Inductance L is formed, first switch pipe Q1Transmitting collection terminal be connected to the first filter inductance LaFirst end, first switch pipe Q1's
Collector terminal is connected to the anode of battery unit 100, second switch pipe Q2Transmitting collection terminal be connected to battery unit 100
Cathode, second switch pipe Q2Collector terminal be connected to the first filter inductance LaFirst end, third switching tube Q3Transmitting collection
Terminal is connected to the second filter inductance LbFirst end, third switching tube Q3Collector terminal be connected to battery unit 100 just
Pole, the 4th switching tube Q4Transmitting collection terminal be connected to the cathode of battery unit 100, the 4th switching tube Q4Collector terminal connect
It is connected on the second filter inductance LbFirst end, the 5th switching tube Q5Transmitting collection terminal be connected to third filter inductance LcFirst
End, the 5th switching tube Q5Collector terminal be connected between the anode of battery unit 100, the 6th switching tube Q6Transmitting collection end
Son is connected to the cathode of battery unit 100, the 6th switching tube Q6Collector terminal be connected to third filter inductance LcFirst
End, the first filter inductance La, the second filter inductance LbWith third filter inductance LcSecond end be respectively connected to three-phase AC grid
UaPhase, UbPhase and UcPhase.
The grid of IGBT is connected with control circuit, the conducting of IGBT is made to be controlled with turning off by control circuit, main power becomes
The duty that parallel operation is connected by a kind of control IGBT in sinusoidal pulse width modulation (SPWM) and space vector pulse width modulation (SVPWM)
Than so as to fulfill the principal current of control battery unit 100.
Auxiliary power conversion 300 is by primary side integrated form high frequency transformer 310, primary side converter 320 and secondary converter
330 compositions.The primary side integrated form high frequency transformer is by a primary side winding WpIt is formed with multiple vice-side windings, vice-side winding is extremely
That under above is respectively obviously W1、W2、...、Wn, and primary side winding WpThe number of turn and multiple vice-side winding W1、W2、...、WnThe number of turn
The sum of it is essentially identical, the no-load voltage ratio for reaching transformer is approximately equal to 1.The primary side converter 320 is by two band anti-paralleled diodes 220
MOSFET, two fly-wheel diode VD and DC capacitor CpComposition, the 7th switching tube Q7Drain terminal be connected to this battery
The anode of unit 100, the 7th switching tube Q7Source terminal be connected to primary side winding WpFirst terminal, the 8th switching tube Q8's
Drain terminal is connected to the cathode of this battery unit 100, the 8th switching tube Q8Source terminal connection primary side winding WpSecond end
Between son, the cathode of the first fly-wheel diode VD1 is connected with the anode of this battery unit 100, the sun of the first fly-wheel diode VD1
Pole and primary side winding WpSecond terminal be connected, the anode of the second fly-wheel diode VD2 and the cathode phase of this battery unit 100
Even, the cathode of the second fly-wheel diode VD2 and primary side winding WpFirst terminal be connected, DC capacitor CpWith this battery unit 100
And it connects.The grid of MOSFET is connected with control circuit, and the conducting of MOSFET is made to be controlled with turning off by control circuit.The secondary
The quantity of converter 330 is corresponded with 110 quantity of battery module and structure is identical, with first secondary converter 330-
For 1, the first secondary converter 330-1 is by a MOSFET with anti-paralleled diode 220 and DC capacitor C1Composition,
9th switching tube Q9Drain terminal be connected to vice-side winding W1Second terminal, the 9th switching tube Q9Source terminal be connected to
The cathode of battery module 110, DC capacitor C1It is in parallel with battery module.The grid of MOSFET is connected with control circuit, makes
The conducting of MOSFET is controlled with turning off by control circuit.
The course of work of secondary converter 330 being wherein connected with battery module 110 is the same, and is to utilize battery
The difference value of module charging and discharging currents and principal current carries out closed loop control.The auxiliary power conversion forward direction course of work is such as
Under：If battery module 110 is in charged state, energy transmission is forward direction, i.e. primary side converter 320 arrives secondary variator 330
Energy transmission, in a PWM cycle, the 7th switching tube Q7With the 8th switching tube Q8Switching tube simultaneously turns on, the 9th switching tube Q9
In the state that is turned off, the first fly-wheel diode VD1 and the second fly-wheel diode VD2 are by primary side winding WpOn electric current is linear
Rise storage energy, the 7th switching tube Q7With the 8th switching tube Q8Switching tube simultaneously turns off it after conducting a period of time, the first afterflow
Diode VD1 and the second fly-wheel diode VD2 are connected immediately, have clamped down on the primary side winding W caused by leakage inductancepInduced electricity
Gesture, while leakage inductance energy makes secondary formation induced potential that secondary anti-paralleled diode 220 be connected, energy flows into battery module
110, it charges to battery module 110.
When battery module 110 is in discharge condition, energy transmission is reversed, i.e., secondary converter 330 arrives primary side variator
320 energy transmission, in a PWM cycle, the 9th switching tube Q9It is in the conduction state, the 7th switching tube Q7With the 8th switch
Pipe Q8Switching tube is in off state, vice-side winding W1Store energy, the 9th switching tube Q9Make its pass after conducting a period of time
Disconnected, leakage inductance energy, which makes primary side form induced potential, makes two clamp diode conductings of primary side, and energy-feedback power grid realizes battery storage
The double-direction control of energy system.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiment of the utility model is not by above-mentioned
The limitation of embodiment, the change made under other any Spirit Essences and principle without departing from the utility model are modified, are replaced
In generation, simplifies combination, should be equivalent substitute mode, is included within the scope of protection of the utility model.
Claims (7)
1. a kind of battery energy storage system of two-way flyback primary side integrated form, it is characterised in that：Including battery unit, main power conversion
Device, auxiliary power conversion and control circuit；The battery unit is connected in series by n group battery modules, and n groups battery module is successively
For B1、B2、...、Bn, described main power inverter one end and battery units in parallel, the other end access three phase network, the auxiliary
Power inverter includes primary side integrated form high frequency transformer, primary side converter and secondary converter, wherein primary side converter one end
It is connected with battery unit, the other end is connected with primary side integrated form high frequency transformer；One end of secondary converter and primary side integrated form
High frequency transformer is connected, and the other end is corresponding with battery module to be connected；Control circuit becomes respectively with main power inverter, auxiliary power
Parallel operation connects.
2. the battery energy storage system of two-way flyback primary side integrated form according to claim 1, it is characterised in that：The primary side collection
Accepted way of doing sth high frequency transformer includes a primary side winding and n vice-side winding, vice-side winding are followed successively by W1、W2、...、Wn；
The primary side converter includes the 7th switching tube, the 8th switching tube, the first fly-wheel diode, the second fly-wheel diode, straight
Galvanic electricity holds Cp；The drain terminal of wherein the 7th switching tube is connected to the anode of battery unit, and the source terminal of the 7th switching tube connects
The first terminal of primary side winding is connected on, the drain terminal of the 8th switching tube is connected to the cathode of battery unit, the 8th switching tube
Between the Second terminal of source terminal connection primary side winding, the cathode of the first fly-wheel diode is connected with the anode of battery unit,
The anode of first fly-wheel diode is connected with the Second terminal of primary side winding, the anode of the second fly-wheel diode and battery unit
Cathode is connected, and the cathode of the second fly-wheel diode is connected with the first terminal of primary side winding, DC capacitor CpWith battery unit simultaneously
It connects；7th switching tube, the 8th switching tube grid be connected with control circuit, make the conducting of the 7th switching tube, the 8th switching tube
It is controlled with turning off by control circuit；7th switching tube, the 8th switching tube are the switch mosfet with anti-paralleled diode
Pipe；
The secondary converter includes n separate unit, each separate unit corresponding battery module respectively, wherein secondary around
Group W1The separate unit connected includes the 9th switching tube, DC capacitor C1, the drain terminal of the 9th switching tube be connected to secondary around
Group W1Second terminal, vice-side winding W1First terminal be connected to the anode of corresponding battery module, the source terminal of the 9th switching tube
Son is connected to the cathode of corresponding battery module, DC capacitor C1With the parallel connection of corresponding battery module, the grid of the 9th switching tube and control
Circuit processed is connected, and the conducting of the 9th switching tube is made to be controlled with turning off by control circuit；9th switching tube is band inverse parallel two
The switch mosfet pipe of pole pipe；Remaining vice-side winding W2、...、WnThe rest may be inferred for the structure of the separate unit connected.
3. the battery energy storage system of two-way flyback primary side integrated form according to claim 1, it is characterised in that：The main power
Converter include first switch pipe, second switch pipe, third switching tube, the 4th switching tube, the 5th switching tube, the 6th switching tube,
DC bus capacitor Cd, the first filter inductance, the second filter inductance, third filter inductance, wherein first switch pipe transmitting collection end
Son is connected to the first end of the first filter inductance, and the collector terminal of first switch pipe is connected to the anode of battery unit, and second
The transmitting collection terminal of switching tube is connected to the cathode of battery unit, and the collector terminal of second switch pipe is connected to the first filtered electrical
The first end of sense, the transmitting collection terminal of third switching tube are connected to the first end of the second filter inductance, the current collection of third switching tube
Extreme son is connected to the anode of battery unit, and the transmitting collection terminal of the 4th switching tube is connected to the cathode of battery unit, and the 4th opens
The collector terminal for closing pipe is connected to the first end of the second filter inductance, and the transmitting collection terminal of the 5th switching tube is connected to third filter
The first end of wave inductance, the collector terminal of the 5th switching tube are connected between the anode of battery unit, the hair of the 6th switching tube
The cathode that collection terminal is connected to battery unit is penetrated, the collector terminal of the 6th switching tube is connected to the first of third filter inductance
End, the first filter inductance, the second filter inductance, third filter inductance second end be respectively connected to the U of three-phase AC gridaPhase, Ub
Phase, UcPhase；First switch pipe, second switch pipe, third switching tube, the 4th switching tube, the 5th switching tube, the 6th switching tube grid
Extremely be connected with control circuit, make first switch pipe, second switch pipe, third switching tube, the 4th switching tube, the 5th switching tube,
The conducting of 6th switching tube is controlled with turning off by control circuit；The first switch pipe, second switch pipe, third switching tube,
Four switching tubes, the 5th switching tube, the 6th switching tube are the IGBT switching tubes with anti-paralleled diode.
4. the battery energy storage system of two-way flyback primary side integrated form according to claim 1, it is characterised in that：The control electricity
Road, the control strategy to main power inverter are the principal currents by controlling the Duty ratio control battery unit of output signal, packet
Include sinusoidal pulse width modulation, space vector pulse width modulation.
5. the battery energy storage system of two-way flyback primary side integrated form according to claim 1, it is characterised in that：The control electricity
Road, the control strategy to auxiliary power conversion are the charge and discharge electricity by the way that the duty ratio of output signal is controlled to realize battery module
Stream and the difference value of principal current carry out closed loop control, including pulse width modulation, pulse frequency modulated.
6. the battery energy storage system of two-way flyback primary side integrated form according to claim 1, it is characterised in that：The battery list
Battery of the member to move back fortune battery or new production.
7. the battery energy storage system of two-way flyback primary side integrated form according to claim 1, it is characterised in that：The battery list
Member includes lithium ion battery, lead-acid battery, ultracapacitor, Ni-MH battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721412841.9U CN207518281U (en) | 2017-10-30 | 2017-10-30 | A kind of battery energy storage system of two-way flyback primary side integrated form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721412841.9U CN207518281U (en) | 2017-10-30 | 2017-10-30 | A kind of battery energy storage system of two-way flyback primary side integrated form |
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| Publication Number | Publication Date |
|---|---|
| CN207518281U true CN207518281U (en) | 2018-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721412841.9U Expired - Fee Related CN207518281U (en) | 2017-10-30 | 2017-10-30 | A kind of battery energy storage system of two-way flyback primary side integrated form |
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| Country | Link |
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| CN (1) | CN207518281U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681677A (en) * | 2017-10-30 | 2018-02-09 | 华南理工大学 | A kind of battery energy storage system of two-way flyback primary side integrated form |
-
2017
- 2017-10-30 CN CN201721412841.9U patent/CN207518281U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681677A (en) * | 2017-10-30 | 2018-02-09 | 华南理工大学 | A kind of battery energy storage system of two-way flyback primary side integrated form |
| CN107681677B (en) * | 2017-10-30 | 2024-01-23 | 华南理工大学 | Bidirectional flyback primary side integrated battery energy storage system |
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