CN205666757U - Zero energy current control system and energy storage system based on triport full -bridge DCDC converter - Google Patents
Zero energy current control system and energy storage system based on triport full -bridge DCDC converter Download PDFInfo
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- CN205666757U CN205666757U CN201620458866.1U CN201620458866U CN205666757U CN 205666757 U CN205666757 U CN 205666757U CN 201620458866 U CN201620458866 U CN 201620458866U CN 205666757 U CN205666757 U CN 205666757U
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Abstract
The utility model discloses a zero energy current control system and energy storage system based on triport full -bridge DCDC converter, including triport full -bridge converter, it includes the transformer and the first port converter that is located the former limit of transformer and second port converter and third port converter of being located the vice limit of transformer, and the circuit structure of three port converter is the same, all includes the power, and both ends of the power supply connects in parallel has electric capacity, and through the coil of full -bridge circuit connection to the transformer, the power of first port converter is to the power transmission power of third port converter, the power of second port converter is for keeping apart the power, voltage, the electric current information of controller through gathering three port converter power, control three port converter the opening of full -bridge circuit, disconnected and move the phase angle, make triport full -bridge converter realize zero energy constant current charging, can satisfy the triport converter and carry out constant current charging to the main battery.
Description
Technical field
This utility model relates to a kind of zero power current control system based on three port full-bridge DC/DC changers and energy storage
System.
Background technology
Three port DC/DC incorporate the DC/DC change that the charger powered to main power source and main power source are powered to accessory power supply
Parallel operation.Under charge mode, accessory power supply is segregate.Under main power source is powered to accessory power supply, charging port is isolation
's.Phase Shift Control Study applies on three port DC/DC changers, it is possible to the transmission of management energy easily, and is easily achieved
The Sofe Switch of power device.Because main battery charging has constant-current charge and constant-voltage charge process, the constant current under zero energy controls is filled
Electricity is suggested for the first time.Main power source constant-current charge is different from common DC source, its non-constant width of live load scope, along with
The carrying out of constant-current charge process, battery port voltage is conversion.In order to ensure accessory power supply one in wider loading range
Directly it is in zero energy, here the zero-power conditions under constant-current charge is analyzed, and realizes zero energy by real-time sampling
Under constant-current charge.
Zero energy about three port full-bridge DC/DC changers controls, and some documents give related description, such as periodical
" IEEE TRANSACTIONS ON POWER ELECTRONICS " 2008, volume 23, the fifth phase, 2443-2453 page of publication
Entitled " An Isolated Three-Port Bidirectional DC-DCConverter With Decoupled Power
Flow Management " paper (author Chuanhong Zhao, Simon D.Round et al.) give first in difference
Between energy-storage travelling wave tube, the energy between three port different ports is only two ports this phenomenons of flowing.
Controlling about the zero power voltage under three port DC/DC changers, some documents give related description, such as periodical
" IEEE TRANSACTIONS ON POWER ELECTRONICS " 2012, volume 27, the fifth phase, 2495-2506 page of publication
Entitled " Idling Port Isolation Control ofThree-PortBidirectional Converter for
EVs " paper (author Sung Young Kim, Hong-Seok Song et al.) give zero energy first and control lower constant voltage and fill
The control block diagram of electricity, and be modeled and theory analysis, propose three port DC/DC changers as electric automobile integration
The idea of charger, verifies finally by experiment.
Master's thesis in 2014 of Nanjing Aero-Space University, entitled " the optimization zero power of three port full-bridge converters
Rate stream " paper of (author Jiang Yongfu) is with three port full-bridges as topology, it is proposed that single phase-shifting control method of current and voltage feedback,
The method is that zero energy flow port is used current closed-loop, and output port still uses voltage close loop.
Above-mentioned three kinds of methods are all that output port is used voltage close loop, and main battery is carried out constant-voltage charge.But it is typical
Three stage charging system need to carry out constant-current charge, in the case of charging current is fixing, the voltage of main battery is conversion, not
Main battery can be used the control mode of voltage close loop.
Utility model content
This utility model is in order to solve the problems referred to above, it is proposed that a kind of zero powers based on three port full-bridge DC/DC changers
Rate current control system and energy-storage system, this utility model obtains the shifting of main battery by the output electric current of Real-time Collection main battery
Phase angle, by Real-time Collection main power source and the voltage of main battery, the zero energy formula according to deriving calculates isolated port in real time
Phase shifting angle, it is possible to meet three Port Translation devices main battery is carried out constant-current charge.
To achieve these goals, this utility model adopts the following technical scheme that
A kind of zero power current control system based on three port full-bridge DC/DC changers, including three port full-bridge conversion
Device and controller, wherein:
Described three port full-bridge converters, including transformator be positioned at the first Port Translation device of transformer primary side and be positioned at
Second Port Translation device of transformer secondary and the 3rd Port Translation device, the circuit structure of three Port Translation devices is identical, all wraps
Including power supply, both ends of power is parallel with electric capacity, is connected to the coil of transformator by full-bridge circuit；
The power supply of described first Port Translation device transmits power to the power supply of the 3rd Port Translation device, and described second port becomes
The power supply of parallel operation is insulating power supply, and described controller, by gathering the voltage of three Port Translation device power supplys, current information, controls
The opening of the full-bridge circuit of three Port Translation devices, disconnected and phase shifting angle, make three port full-bridge converters realize zero energy constant-current charge.
Described controller connects the second Port Translation device by voltage regulator, connects the 3rd port by rheonome
Changer.
Described 3rd Port Translation device is also associated with low pass filter.
Preferably, may be used for control method based on said system, concrete steps include:
(1) at the 3rd Port Translation device, charging current is sampled, it is compared with given value of current value, deviation warp
Overcurrent actuator, obtains the phase shifting angle of closed-loop current control device, delivers to the 3rd Port Translation device and control its switching tube；
(2) gather the first Port Translation device and the port voltage of the 3rd Port Translation device, be calculated fundametal compoment, in conjunction with
The phase shifting angle of the 3rd Port Translation device, calculates and makes the second Port Translation null reference voltage of device through-put power；
(3) gathering the port voltage of the second Port Translation device, it is compared by controller with the reference voltage calculated,
To the phase shifting angle of the second Port Translation device, control the conducting of the second Port Translation device switching tube.
In described step (2), because fundamental power is similar to active power, for the ease of analyzing, utilize fundametal compoment generation
For AC signal, determine the three port full-bridge converter equivalences first-harmonic amount to former limit.
In described step (2), all continuous in each moment according to leakage inductance electric current, obtain the electric current of either port changer
Boundary condition.
In described step (2), the high-frequency voltage signal of transformer alternating side is carried out Fourier transformation.
In described step (3), when the first Port Translation device and the second Port Translation device, the second Port Translation device and the 3rd end
When the through-put power of mouth changer is equal, the second Port Translation device realizes zero energy.
A kind of energy-storage system, including zero power current controls based on three port full-bridge DC/DC changers as described above
System processed.
The beneficial effects of the utility model are:
(1) this utility model obtains the phase shifting angle of main battery by the output electric current of Real-time Collection main battery, by real time
Gather main power source and the voltage of main battery, calculate the phase shifting angle of isolated port according to the zero energy formula derived in real time；
(2) this utility model needs a certain energy storage original paper defeated in can be used for many energy-storage systems such as Aero-Space, photovoltaic generation
Going out power is remaining original paper to be used constant-current charge while zero.
Accompanying drawing explanation
Fig. 1 is the topological schematic diagram of three port full-bridge converters of the present utility model；
Fig. 2 is the waveform diagram in the case of steady operation of the present utility model；
Fig. 3 is the zero energy vector diagram under charge mode of the present utility model；
Fig. 4 (a) is the three port full-bridge circuit equivalences of the present utility model triangle simplified electrical circuit diagram to former limit；
Fig. 4 (b) is the three port full-bridge circuit equivalences of the present utility model star circuit figures to former limit；
Fig. 5 is the constant-current charge control block diagram under zero energy of the present utility model.
Detailed description of the invention:
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
In order to meet three Port Translation devices, main battery is carried out constant-current charge, the utility model proposes under a kind of zero energy permanent
Current charge control strategy, this control strategy is used for three port full-bridge DC/DC changers, as a example by the topology that Fig. 1 gives.
This utility model obtains the phase shifting angle of main battery by the output electric current of Real-time Collection main battery, passes through Real-time Collection
Main power source and the voltage of main battery, calculate the phase shifting angle of isolated port in real time according to the zero energy formula derived.
The topology of three port full-bridge converters as a example by Fig. 1, C1-C3Electric capacity for port 1-3.V1DCIt is main power source, permissible
It is that alternating current power supply obtains through uncontrollable rectifier or PFC (PFC), V '2DCIt is accessory power supply, V '3DCIt it is main battery；L1,
L’2,L’3Represent the leakage inductance electric current of high frequency transformer；No-load voltage ratio between three ports of transformator is 1:n1:n2；v1,v'2,v'3
Represent the voltage of transformer alternating side.Analysis below transmits power with port 1 power supply to port 3 main battery, and port 2 assists
Power supply is explanation zero power current control as a example by isolation control.
Fig. 2 is the waveform in the case of steady operation.v1-v3It is the transformer alternating side voltage voltage of converting former limit, v1=
V1DC, v2=V '2DC/n2, v3=V '3DC/n3。vf1-vf3It is v1-v3Fundametal compoment.
The basic topology of three ports is given at Fig. 1.Fundamental power approximates active power, for the ease of analyzing, we
AC signal is replaced by first-harmonic amount.Fig. 2 gives the three port full-bridge converter equivalences first-harmonic amount to former limit.Such as Fig. 4 (a), Fig. 4
B, shown in (), Y type equivalent circuit is easy to modeling analysis, and △ type equivalent circuit is easy to circuit analysis.Wherein, L2=L '2/n2 2,L3=
L’3/n3 2And L△12=L1+L2+L1L2/L3,L△23=L2+L3+L2L3/L1,L△13=L1+L3+L1L3/L2.We use fundametal compoment
Following formula represents
In order to obtain zero energy control, we can obtain the vector diagram of Fig. 3 according to formula (1)
According to (1), make if2=0, we obtain the vector condition of zero energy lower port 2
Single phase shifting control is used to realize zero energy control, and zeroEqual to 0,WithRepresent vf2And vf1With vf3And vf1
Between phase shifting angle.By the high-frequency voltage signal of transformer alternating side is carried out Fourier transformation, we can obtainThrough-put power between each port is shown in formula (2).
Only at P21=P32When, port 2 just can realize zero energy.
Work wave under circuit steady state operating conditions is shown in Fig. 2.According to the ampere-second value of positive-negative half-cycle in inductance each cycle
Balance, it is known that by leakage inductance L△12,L△32,L△13Electric current iL21,iL32,iL13It is axisymmetric about coordinate in half period.
So we are only by the I-III pattern in analysis chart 2.In pattern I:
Pattern I existsTerminate, in pattern II:
Pattern II existsTerminate, in pattern III:
According to leakage inductance electric current iLIt is all continuous print in each moment, the boundary condition of available arbitrary group of electric current.
According to above-mentioned formula and Fig. 3, amplitude and the phase condition of port 2 zero energy under phase shifting control can be obtained:
According to formula (6), obtain the constant-current charge control block diagram under zero energy controls and zero energy control condition, as
Shown in Fig. 5.
This control strategy can be used for three port full-bridge converters, and changer may be used for by input direct-current source, output port
Many energy-storage travelling wave tubes system that accessory power supply, main power source and high frequency transformer are constituted.This control method can also be used for Aero-Space, light
Needing a certain energy storage original paper output in volt many energy-storage systems such as generating is remaining original paper to be used constant-current charge while zero.
2), when using single phase shifting control, the actuating quantity of the control signal of circuit is two phase shifting angles, as it is shown in figure 1, i.e. hold
Phase shifting angle between mouth 2 and port 1Phase shifting angle between port 3 and port 1In order to other article three ends
The analysis of mouth is unified, Wo Menling
As it is shown in figure 5, zero energy control under constant-current charge to realize step as follows:
1) at port 3 to charging current I '3DCSampling, is fed back by low pass filter LPF, compares with given value of current value
Relatively, deviation, through rheonome, obtains the phase shifting angle of closed-loop current control deviceDeliver to port 3 and control switching tube.
2) the port voltage V of Real-time Collection port 1 and port 31DC,V’3DCDraw vf1,vf3.Also gather phase shifting angle simultaneouslyCalculate in real time according to the formula (6) derived and make the port 2 null Voltage Reference of through-put power.
3) at port 2 to voltage V '2DCThrough modulate circuit after sampling, compare with the reference voltage of port 2, deviation
By voltage regulator, obtain the phase shifting angle of port 2Control the conducting of switching tube.
Although detailed description of the invention of the present utility model is described by the above-mentioned accompanying drawing that combines, but not new to this practicality
The restriction of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability
Field technique personnel need not to pay various amendments or deformation that creative work can make still at protection model of the present utility model
Within enclosing.
Claims (5)
1. zero power current control systems based on three port full-bridge DC/DC changers, is characterized in that: include that three ports are complete
Bridging parallel operation and controller, wherein:
Described three port full-bridge converters, including transformator be positioned at the first Port Translation device of transformer primary side and be positioned at transformation
Second Port Translation device of device secondary and the 3rd Port Translation device, the circuit structure of three Port Translation devices is identical, all includes electricity
Source, both ends of power is parallel with electric capacity, is connected to the coil of transformator by full-bridge circuit；
The power supply of described first Port Translation device transmits power, the electricity of the second Port Translation device to the power supply of the 3rd Port Translation device
Source is insulating power supply, and described controller, by gathering the voltage of three Port Translation device power supplys, current information, controls three ports
The opening of the full-bridge circuit of changer, disconnected and phase shifting angle, make three port full-bridge converters realize zero energy constant-current charge.
A kind of zero power current control system based on three port full-bridge DC/DC changers, it is special
Levy and be: described controller connects the second Port Translation device by voltage regulator, connect the 3rd port by rheonome and become
Parallel operation.
A kind of zero power current control system based on three port full-bridge DC/DC changers, it is special
Levy and be: described 3rd Port Translation device is also associated with low pass filter.
A kind of zero power current control system based on three port full-bridge DC/DC changers, it is special
Levy and be: when the first Port Translation device and the second Port Translation device, the second Port Translation device and the transmission merit of the 3rd Port Translation device
When rate is equal, the second Port Translation device realizes zero energy.
5. an energy-storage system, is characterized in that: include as according to any one of claim 1-4 based on three port full-bridge DC/
The zero power current control system of DC changer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620458866.1U CN205666757U (en) | 2016-05-19 | 2016-05-19 | Zero energy current control system and energy storage system based on triport full -bridge DCDC converter |
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| CN201620458866.1U CN205666757U (en) | 2016-05-19 | 2016-05-19 | Zero energy current control system and energy storage system based on triport full -bridge DCDC converter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763066A (en) * | 2016-05-19 | 2016-07-13 | 山东大学 | Zero-power current control system and method based on three-port full-bridge DC/DC converter |
| CN109245231A (en) * | 2018-10-29 | 2019-01-18 | 浙江大学 | A kind of wireless charging topological structure with nature constant pressure and flow output characteristics |
| CN111251916A (en) * | 2019-09-23 | 2020-06-09 | 华为技术有限公司 | Charging circuit with double output ports |
| CN112072914A (en) * | 2020-07-22 | 2020-12-11 | 北京交通大学 | Three-port direct current converter for hybrid energy storage |
| CN113330672A (en) * | 2020-12-23 | 2021-08-31 | 深圳欣锐科技股份有限公司 | Charging system and car |
-
2016
- 2016-05-19 CN CN201620458866.1U patent/CN205666757U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763066A (en) * | 2016-05-19 | 2016-07-13 | 山东大学 | Zero-power current control system and method based on three-port full-bridge DC/DC converter |
| CN105763066B (en) * | 2016-05-19 | 2018-07-27 | 山东大学 | Zero power current control system and method based on three port full-bridge DC/DC converters |
| CN109245231A (en) * | 2018-10-29 | 2019-01-18 | 浙江大学 | A kind of wireless charging topological structure with nature constant pressure and flow output characteristics |
| CN111251916A (en) * | 2019-09-23 | 2020-06-09 | 华为技术有限公司 | Charging circuit with double output ports |
| CN111251916B (en) * | 2019-09-23 | 2021-09-07 | 华为技术有限公司 | Charging circuit with double output ports |
| CN112072914A (en) * | 2020-07-22 | 2020-12-11 | 北京交通大学 | Three-port direct current converter for hybrid energy storage |
| CN112072914B (en) * | 2020-07-22 | 2021-08-10 | 北京交通大学 | Three-port direct current converter for hybrid energy storage |
| CN113330672A (en) * | 2020-12-23 | 2021-08-31 | 深圳欣锐科技股份有限公司 | Charging system and car |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161026 Termination date: 20180519 |
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| CF01 | Termination of patent right due to non-payment of annual fee |