CN107612033A - A kind of AC/DC universal port device and conversion method - Google Patents
A kind of AC/DC universal port device and conversion method Download PDFInfo
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Abstract
The embodiment of the present invention provides a kind of alternating current-direct current port device and conversion method.Methods described includes：Energy device is accessed into network using the alternating current-direct current port device, establishes communication link and energy connecting link；According to the unit type of the energy device, electric energy form and signal frequency, AC-AC conversion, DC conversion, AC DC conversion or DC-AC are carried out to the electric signal by the energy device and is changed.The embodiment of the present invention is integrated with AC-AC conversion, DC conversion, AC DC conversion and DC-AC translation function on a hardware device, pass through methods described, the information such as unit type of each energy device in acquisition network that can be adaptively, so as to the conversion of adaptive driving electric signal, energy conversion efficiency is greatly improved, improves the overall performance of energy router or even energy internet.
Description
Technical field
The present embodiments relate to the communication technology, power transmission technology field, more particularly, to a kind of AC/DC universal
Port device and conversion method.
Background technology
Energy internet is the advanced Power Electronic Technique of integrated use, information technology and intelligent management technology, by largely
By distributed energy harvester, novel electric power network, the oil of distributed energy storage device and all kinds load composition
Network, the interconnection of natural gas network equal energy source node are got up, to realize the energy peer switch of energy in bidirectional flow and shared network.
At present, the distribution type renewable energy interconnection of access variety classes, different size is needed during energy interconnection network operation
Net equipment, such as wind-powered electricity generation, photovoltaic, energy storage.Each of which has different production of energy characteristics, can produce the differences such as alternating current-direct current
The voltage and current of form, different amplitudes.It is mutual how various types of distributed energy equipment fast and effectively to be accessed into the energy
Networking is the key issue that energy internet needs to solve.
Need to carry out energy conversion during various types of energy device access energy internets.Traditional controller is being handled
During the access of all types of energy devices, the alternating current-direct current analog-converted by complexity is needed to set for different types of energy device
Standby (such as traditional A/D/A equipment) or device for transformer realize effective access, conversion and the control of the energy, and every kind of conversion all needs
Otherwise equipment together, such as conversion, the conversion of direct current to exchange of AC-to DC, can so cause the diversity of equipment and answer
Miscellaneous degree increase, while certain energy loss is brought, the equipment of the general energy conversion of neither one or general conversion side
Method.
The content of the invention
The embodiment of the present invention provides a kind of DC-AC switching for overcoming above mentioned problem or solving the above problems at least in part
With port device and conversion method.
One side according to embodiments of the present invention, there is provided a kind of alternating current-direct current port device, including AC-AC modulus of conversion
Block, DC modular converter, AC DC modular converter, DC-AC modular converter and switch control module；
The AC-AC modular converter, for being modulated and being filtered using pulse-width modulation PWM technology, it will input
AC signal be converted to target frequency AC signal output；
The DC modular converter, for carrying out copped wave using pulse-width modulation PWM technology, by the direct current signal of input
Be converted to the DC signal output of target amplitude and dutycycle；
The AC DC modular converter, for being modulated using pulse-width modulation PWM technology, by the AC signal of input
Be converted to the DC signal output of target amplitude and dutycycle；
The DC-AC modular converter, for carrying out copped wave using pulse-width modulation PWM technology and being filtered, it will input
Direct current signal be converted to target frequency AC signal output；
The switch control module, for carrying out switch switching, to realize that the alternating current-direct current port device carries out exchange friendship
Circulation is changed, DC is changed, AC DC conversion or DC-AC are changed.
Further, the alternating current-direct current port device also includes direct-flow input end mouth, direct current/single phase ac output port, handed over
Flow input port, ac output end mouth and straight conversion output port；
The switch control module, is further used for：
The direct-flow input end mouth and the ac output end mouth are closed to inductive switch, to realize that direct current turns to exchange
Change；Or
The ac input end mouth is closed with the direct current/single phase ac output port to inductive switch, to realize friendship respectively
Flow to the conversion of direct current or the conversion of AC to AC；Or
The direct-flow input end mouth and the straight conversion output port are closed to inductive switch, to realize DC-to-DC
Conversion.
Further, the alternating current-direct current port device also includes：The low pass filter in parallel with the ac output end mouth；
One end connection PWM demodulator circuit of the LPF, the other end connect user equipment by output port,
For filtering out direct current to the clutter in exchange transfer process.
Further, the AC-AC modular converter, is further used for：The AC signal of input is first passed through into PWM
Direct current signal corresponding to forming target frequency, the AC signal of the target frequency is then reverted to by low pass filter, and
Exported；
The DC modular converter, is further used for：The direct current signal of input is subjected to copped wave by pwm circuit,
To realize the change of direct current signal amplitude and dutycycle, so as to obtain the direct current signal of target amplitude and dutycycle, and carry out defeated
Go out；
The AC DC modular converter, is further used for：AC signal based on input, leads to circuit switch device
It is disconnected to be controlled, obtain a series of equal pulse of amplitudes；Based on PWM modulation technology, the width by pre-defined rule to each pulse
It is modulated, so as to obtain the direct current signal of target amplitude and dutycycle, and is exported.
The DC-AC modular converter, is further used for：First the direct current signal of input is cut by pwm circuit
Ripple, to change the voltage of direct current signal, dutycycle and AC signal frequency of equal value；Area equivalent principle is then based on, by copped wave
Signal afterwards so as to obtain the AC signal of target frequency, and is exported by the low pass filter of target frequency.
Other side according to embodiments of the present invention, also provide a kind of AC-DC conversion based on alternating current-direct current port device
Method, including：
Energy device is accessed into network using the alternating current-direct current port device, establishes communication link and energy connecting link；
According to the unit type of the energy device, electric energy form and signal frequency, to by the energy device
Electric signal carries out AC-AC conversion, DC conversion, AC DC conversion or DC-AC conversion.
Further, it is described according to the unit type of the energy device, electric energy form and signal frequency, to described in process
The electric signal of energy device carries out AC-AC conversion, DC conversion, AC DC conversion or DC-AC conversion, enters one
Step includes：
Unit type, electric energy form and the signal frequency of the energy device are obtained by the communication link；
According to the unit type and electric energy form, driver corresponding to selection；
According to the electric energy form and the signal frequency, the alternating current-direct current port is controlled to set using the driver
It is standby to carry out AC-AC conversion, DC conversion, AC DC conversion or DC-AC conversion, to realize to passing through the energy
The conversion of the electric signal of source device.
Further, it is described to control the alternating current-direct current port device to carry out AC-AC conversion, straight using the driver
Direct current conversion, AC DC conversion or DC-AC conversion are flowed, is further comprised：
The direct-flow input end mouth and the ac output end mouth are closed to inductive switch, to realize that direct current turns to exchange
Change；Or
The ac input end mouth is closed with the direct current/single phase ac output port to inductive switch, to realize friendship respectively
Flow to the conversion of direct current or the conversion of AC to AC；Or
The direct-flow input end mouth and the straight conversion output port are closed to inductive switch, to realize DC-to-DC
Conversion.
Further, the progress AC-AC conversion, DC conversion, AC DC conversion or DC-AC conversion,
Further comprise：
First then the AC signal of input is passed through into low pass by direct current signal corresponding to PWM formation target frequency
Wave filter reverts to the AC signal of the target frequency, and is exported；Or
The direct current signal of input is subjected to copped wave by pwm circuit, to realize the change of direct current signal amplitude and dutycycle,
So as to obtain the direct current signal of target amplitude and dutycycle, and exported；Or
AC signal based on input, the break-make of circuit switch device is controlled, it is equal to obtain a series of amplitudes
Pulse；Based on PWM modulation technology, the width of each pulse is modulated by pre-defined rule, so as to obtain target amplitude and duty
The direct current signal of ratio, and exported；Or
The direct current signal of input is first subjected to copped wave by pwm circuit, to change the voltage of direct current signal, dutycycle and wait
Valency AC signal frequency；Area equivalent principle is then based on, the low pass filter by the signal after copped wave by target frequency, from
And the AC signal of target frequency is obtained, and exported.
Specifically, the driver is run in the alternating current-direct current port device.
The embodiment of the present invention proposes a kind of AC/DC universal port device, and AC-AC is integrated with a hardware device
Conversion, DC conversion, AC DC conversion and DC-AC translation function, are realized to various types of in network
The general-purpose interface of energy device, meet different type, variety classes production equipment Effec-tive Function, hardware can greatly be reduced and set
The complexity of meter, mitigate hardware production cost；, can be with adaptive by a kind of AC-DC conversion method provided in an embodiment of the present invention
That answers obtains the information such as unit type of each energy device in network, so as to the conversion of adaptive driving electric signal, carries significantly
High-energy source conversion efficiency, improve the overall performance of energy router or even energy internet.
Brief description of the drawings
Fig. 1 is the module frame schematic diagram of AC/DC universal port device described in the embodiment of the present invention；
Fig. 2 is the circuit diagram of AC/DC universal port device of the embodiment of the present invention based on IGBT；
Fig. 3 is AC-DC conversion method flow schematic diagram described in the embodiment of the present invention.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
Different from traditional multiport conversion equipment and method, the embodiment of the present invention for all kinds (photovoltaic, wind-powered electricity generation,
Natural gas turbines generating equipment, various types of power load equipment) distributed energy internet device need it is quick, effectively
Access energy internet demand, using unified hardware design, that is, pass through identical circuit design and hardware interface access
Different types of energy internet device, distributed energy equipment is directly accessed unified general purpose interface and i.e. alternating current-direct current
In universal port equipment, distributed power generation correlation function is managed by general purpose interface.
In the case, AC/DC universal port device is controlling the same of corresponding energy internet device by driver
When, the effective access and conversion to AC and DC two types electric power energy are realized by pulse width modulation (PWM).
Pulse width modulation changes come the biasing of modulation transistor base stage or metal-oxide-semiconductor grid according to respective loads, comes real
The change of existing transistor or metal-oxide-semiconductor ON time, so as to realize the change of switching power supply output.
Pulse width modulation is based on area equivalent principle, i.e. the equal and variform burst pulse of momentum is added in inertia
Link on when, its effect is essentially identical, thus demonstrate based on PWM carry out AC-DC conversion feasibility in theory.PWM is adjusted
Demodulation method processed, which is used for AC-DC conversion, has design simple, and the features such as relatively low is lost.
It should be noted that the embodiment of the present invention illustrates DC-AC switching described in the embodiment of the present invention by taking energy internet as an example
Energy internet is not limited to the application of port device, but the AC/DC universal port device, including energy internet exists
Have what AC-DC conversion needed in interior all internets, can be set using AC/DC universal port described in the embodiment of the present invention
It is standby.
The technical scheme of the embodiment of the present invention described in detail below.
Fig. 1 is the module frame schematic diagram of AC/DC universal port device described in the embodiment of the present invention, as described in Figure 1, one
Kind alternating current-direct current port device, including AC-AC modular converter, DC modular converter, AC DC modular converter, direct current
Exchange modular converter and switch control module；
The AC-AC modular converter, for being modulated and being filtered using pulse-width modulation PWM technology, it will input
AC signal be converted to the AC signal output of target frequency, in corresponding diagram 1 " PWM+LPF exchange, which becomes, hands over
Stream " module；
The DC modular converter, for carrying out copped wave using pulse-width modulation PWM technology, by the direct current signal of input
Be converted to the DC signal output of target amplitude and dutycycle, " copped wave (PWM) direct current inversion of direct current " module in corresponding diagram 1；
The AC DC modular converter, for being modulated using pulse-width modulation PWM technology, by the AC signal of input
Be converted to the DC signal output of target amplitude and dutycycle, " PWM AC-DC " module in corresponding diagram 1；
The DC-AC modular converter, for carrying out copped wave using pulse-width modulation PWM technology and being filtered, it will input
Direct current signal be converted to the AC signal output of target frequency, in corresponding diagram 1 " copped wave (PWM)+LPF direct current, which becomes, to be handed over
Stream " module；
The switch control module, for carrying out switch switching, to realize that the alternating current-direct current port device carries out exchange friendship
Circulation is changed, DC is changed, AC DC conversion or DC-AC are changed, " function selection " module in corresponding diagram 1.
The embodiment of the present invention proposes a kind of AC/DC universal port device, and multiple telecommunications are integrated with a hardware device
Number modular converter, including AC-AC modular converter, DC modular converter, AC DC modular converter and DC-AC turn
Block is changed the mold, to realize that AC-AC is changed, DC is changed, AC DC is changed and DC-AC by a hardware device
Translation function, various energy internet devices can be accessed with unified general hardware interface, institute is realized by Digital Control
The alternating current-direct current form of electric energy is needed to change.Every time in use, selecting a suitable electric signal modulus of conversion by switch control module
Block realizes corresponding conversion.
Pass through the AC/DC universal port device, it is possible to achieve energy internet device is on energy router port
Plug and play, it is possible to achieve to the general-purpose interface of various types of energy device in network, meet different type, not of the same race
Class production equipment Effec-tive Function, the complexity of hardware design can greatly be reduced, mitigate hardware production cost.
AC/DC universal port device described in the embodiment of the present invention is realized based on IGBT module, with PWM technologies and IGBT devices
Part is the AC/DC universal port device of core, by digitized form control and converting analogue electric power signal, is greatly improved
Energy conversion efficiency, reduces power conversion losses, embodies certain advance.
The embodiment of the present invention also has steady voltage, electric current based on the AC/DC universal port device that IGBT is controlled and had
The functions such as work(, reactive power support, fault recovery, its performance and efficiency are better than traditional electric energy converting equipment.
Fig. 2 is refer to, in an optional embodiment, the AC/DC universal port device also includes direct-flow input end
Mouth, direct current/single phase ac output port, ac input end mouth, ac output end mouth and straight conversion output port；
The switch control module, is further used for：
The direct-flow input end mouth and the ac output end mouth are closed to inductive switch, to realize that direct current turns to exchange
Change；Or
The ac input end mouth is closed with the direct current/single phase ac output port to inductive switch, to realize friendship respectively
Flow to the conversion of direct current or the conversion (filter module is omitted in Fig. 2) of AC to AC；Or
The direct-flow input end mouth and the straight conversion output port are closed to inductive switch, to realize DC-to-DC
Conversion.
Because single-phase+ground wire is used only in alternating current equipment or two-phase is powered, the access of AC DC equipment can use system
One interface and plug.
, can first when energy device accesses network by the AC/DC universal port device in the embodiment of the present invention
Energy device is judged with the alternating current-direct current attribute of energy.It is then shut off telecommunications different in the AC/DC universal port device
Number input and output port line switching corresponding to modular converter, establishes energy conversion and transmission path, and led to by control program
Cross the operation to the switching regulator of IGBT module group and the AC-DC conversion correlation function of true-to-shape is realized in control.When energy transmits
When terminating and pulling the plug out of the socket, input and output port line switching corresponding to switch control module opening, energy device is terminated
Communication linkage and energy transport.
Fig. 2 is refer to, in an optional embodiment, the AC/DC universal port device also includes：With the friendship
Flow output port low pass filter in parallel；
One end connection PWM demodulator circuit of the LPF, the other end connect user equipment by output port,
For filtering out direct current to the clutter in exchange transfer process.
In an optional embodiment, the AC-AC modular converter, it is further used for：First the exchange of input is believed
Number by PWM formed target frequency corresponding to direct current signal, the target frequency is then reverted to by low pass filter
AC signal, and exported；
The DC modular converter, is further used for：The direct current signal of input is subjected to copped wave by pwm circuit,
To realize the change of direct current signal amplitude and dutycycle, so as to obtain the direct current signal of target amplitude and dutycycle, and carry out defeated
Go out；
The AC DC modular converter, is further used for：AC signal based on input, leads to circuit switch device
It is disconnected to be controlled, obtain a series of equal pulse of amplitudes；Based on PWM modulation technology, the width by pre-defined rule to each pulse
It is modulated, so as to obtain the direct current signal of target amplitude and dutycycle, and is exported.
The DC-AC modular converter, is further used for：First the direct current signal of input is cut by pwm circuit
Ripple, to change the voltage of direct current signal, dutycycle and AC signal frequency of equal value；Area equivalent principle is then based on, by copped wave
Signal afterwards so as to obtain the AC signal of target frequency, and is exported by the low pass filter of target frequency.
Based on foregoing description, AC/DC universal port device described in the embodiment of the present invention mainly realizes four big functions, including：
Function 1, exchange are converted to exchange.Because the amplitude and/or frequency of the AC signal of input and target AC signal
Differ, so needing to change.Direct current signal corresponding to first passing through PWM formation assigned frequency, then passes through LPF
Revert to the AC signal of assigned frequency.
Function 2, direct current are converted to direct current.Because the amplitude and/or duty of the direct current signal of input and target direct current signal
Than differing, so needing to change.The change of direct current signal amplitude and dutycycle can be realized by the copped wave function of pwm circuit
Change.
Function 3, exchange are converted to direct current.Input as AC signal, export as direct current signal.It is right based on PWM modulation technology
The break-make of circuit switch device is controlled, and output end is obtained a series of equal pulse of amplitudes, is replaced with these pulses
Sine wave or required waveform.Multiple pulses are namely produced in the half period of output waveform, by by certain rule
Then the width of each pulse is modulated, you can obtain required direct current signal.
Function 4, direct current are converted to exchange.Input as direct current signal, export as AC signal.It is basically unchanged in gross energy
Under the conditions of, the voltage, dutycycle and the equivalence that first pass around copped wave function (same to be realized based on PWM technologies) change direct current signal are handed over
The parameters such as signal frequency are flowed, are then based on area equivalent principle, the low pass filter by signal by an assigned frequency
AC signal needed for generation.
Based on PWM principles, the AC/DC universal port device passes through the discharge and recharge sequential control to IGBT module in port
System, copped wave (PWM controls), rectification (PWM) and the inversion (low pass of traditional circuit can be realized respectively in a manner of digitized
Wave filter) etc. function.
In summary, alternating current-direct current port device described in the embodiment of the present invention, can be met not by unified Interface design
The Effec-tive Function of same type, variety classes production equipment；Flexible, effective AC-DC conversion work(is realized by Digital Control
Can, energy conversion efficiency can be greatly improved, improves the overall performance of energy router or even energy internet.
Energy device can substantially reduce energy internet device by the use set to the alternating current-direct current port in network
Access and design cost, reduce energy source loss, the shared offer guarantee of the energy for user between freely, flexibly, open.
Based on alternating current-direct current port device described in the embodiment of the present invention, the embodiment of the present invention also provides a kind of AC-DC conversion side
Method, realize the correlation function that the energy device based on hardware generalization, digital control automatically accesses energy router.
Fig. 3 is AC-DC conversion method flow schematic diagram described in the embodiment of the present invention, as shown in figure 3, the embodiment of the present invention
A kind of AC-DC conversion method based on alternating current-direct current port device is provided, including：
Energy device is accessed into network using the alternating current-direct current port device, establishes communication link and energy connecting link；
According to the unit type of the energy device, electric energy form and signal frequency, to by the energy device
Electric signal carries out AC-AC conversion, DC conversion, AC DC conversion or DC-AC conversion.
The energy device for needing to access network is linked into network by the embodiment of the present invention by alternating current-direct current port device first
In, and establish communication link and energy connecting link；Then rational electric signal is selected to turn according to the relevant information of energy device
Mold changing formula enters the conversion of horizontal electrical signal；Related information equipment model, electric energy form and the electric signal frequency of wherein described energy device
Rate, electric energy form include AC/DC electrical energy form, rated voltage and current amplitude etc.；The electric signal translative mode includes
AC-AC conversion, DC conversion, AC DC conversion are changed with DC-AC.
The embodiment of the present invention realizes different electric signal translative mode using the alternating current-direct current port device.
Energy device described in the embodiment of the present invention can be all kinds of active equipments run in generating equipment or internet；
Can be passive load, passive load can also carry out AC-DC conversion, and now turning commutating device by electric energy energizes.
It is described according to the unit type of the energy device, electric energy form and electric signal in an optional embodiment
Frequency, AC-AC conversion, DC conversion, AC DC conversion or straight are carried out to the electric signal by the energy device
Stream exchange conversion, further comprises：
Unit type, electric energy form and the signal frequency of the energy device are obtained by the communication link；
According to the unit type and electric energy form, driver corresponding to selection；In the alternating current-direct current port device
Operation.
According to the electric energy form and the signal frequency, the alternating current-direct current port is controlled to set using the driver
It is standby to carry out AC-AC conversion, DC conversion, AC DC conversion or DC-AC conversion, to realize to passing through the energy
The conversion of the electric signal of source device.
In the embodiment of the present invention, due to each not phase such as the unit type of individual energy device, electric energy form, signal frequency
Together, in order to realize unified electric signal translation interface, unit type, the electric energy lattice of the energy device of signal to be converted are obtained first
Formula, signal frequency information, suitable electric signal is selected to change further according to unit type, electric energy form, signal frequency information
Pattern.A variety of electric signal translative mode are controlled by driver, and when actually being changed, driver is direct
Run in the alternating current-direct current port device.
The four kinds of electric signal translative mode provided based on the alternating current-direct current port device, methods described of the embodiment of the present invention are led to
Overdrive programme-control and need to realize that different electrical signal patterns is changed according to energy device.
Further, AC-DC conversion method described in the embodiment of the present invention can be realized by main control platform, Jin Ershi
Now to the energy management of all devices in network.Main control platform according to the AC-DC conversion of equipment different in network require,
Suitable electric signal translative mode is selected for different equipment, then passes through alternating current-direct current port device corresponding with each energy device
On driver control sequence be controlled, realize the conversion of the alternating current-direct current of electric signal.Further, during equipment operation, lead to
The relevant parameters such as the active and reactive of energy device, voltage, electric current can be controlled by crossing main control platform, realize the start and stop to motor
And speed change, and related fault management capability.
It is corresponding with the function phase of the alternating current-direct current port device, in an optional embodiment, described in the utilization
Driver controls the alternating current-direct current port device to carry out AC-AC conversion, DC conversion, AC DC conversion or straight
Stream exchange conversion, further comprises：
The direct-flow input end mouth and the ac output end mouth are closed to inductive switch, to realize that direct current turns to exchange
Change；Or
The ac input end mouth is closed with the direct current/single phase ac output port to inductive switch, to realize friendship respectively
Flow to the conversion of direct current or the conversion of AC to AC；Or
The direct-flow input end mouth and the straight conversion output port are closed to inductive switch, to realize DC-to-DC
Conversion.
It is corresponding with the function phase of the alternating current-direct current port device, it is described to be exchanged in an optional embodiment
Exchange conversion, DC conversion, AC DC conversion or DC-AC conversion, further comprise：
First then the AC signal of input is passed through into low pass by direct current signal corresponding to PWM formation target frequency
Wave filter reverts to the AC signal of the target frequency, and is exported；Or
The direct current signal of input is subjected to copped wave by pwm circuit, to realize the change of direct current signal amplitude and dutycycle,
So as to obtain the direct current signal of target amplitude and dutycycle, and exported；Or
AC signal based on input, the break-make of circuit switch device is controlled, it is equal to obtain a series of amplitudes
Pulse；Based on PWM modulation technology, the width of each pulse is modulated by pre-defined rule, so as to obtain target amplitude and duty
The direct current signal of ratio, and exported；Or
The direct current signal of input is first subjected to copped wave by pwm circuit, to change the voltage of direct current signal, dutycycle and wait
Valency AC signal frequency；Area equivalent principle is then based on, the low pass filter by the signal after copped wave by target frequency, from
And the AC signal of target frequency is obtained, and exported.
In summary, the embodiment of the present invention proposes a kind of AC/DC universal port device based on pulse width modulation simultaneously
A kind of method of AC-DC conversion is provided.Mainly include two parts function：A part is according to driver and corresponding strategies pair
Energy device in internet is controlled, and another part is to be based on PWM demodulation techniques, is realized and is handed over efficiently and adaptively directly
Flow translation function.AC/DC universal port device is designed to greatly reduce using unitized, modularization, digitized port
The complexity of hardware design, mitigate hardware production cost, thus used by many designs.
During carrying out practically, by the identification to energy device attribute, the key property of the equipment can be obtained, is wrapped
Include model, alternating current-direct current form and corresponding operating frequency etc.., can be by selecting to close based on this class feature and related control strategies
Corresponding energy conversion module in suitable driver, and AC/DC universal port module, realizes required AC-DC conversion
Function.
In a specific embodiment based on energy internet, energy device accesses the whole of AC/DC universal port device
Body connection procedure is as follows：
Step 1, hardware interface access.The all types of energy (generating) equipment pass through uniform hardware interface (AC/DC universal
Port device corresponding ports) access AC/DC universal port device, and establish communication link and energy connecting link.
Step 2, species and model determine.Main program control platform obtains species corresponding to energy device by communication link
(referring mainly to electric energy form, including AC/DC electrical energy form, rated voltage, current amplitude etc.), signal frequency and equipment type
Number.
Step 3, suitable driver selected according to unit type.The driver is to AC/DC universal port device
Operation is operated and controlled.Driver will be run in AC/DC universal port device.
Step 4, selected based on species and frequency information suitable converting electrical signal pattern (corresponding different modular converter with
Realize AC-DC conversion correlation function).Main program control platform requires according to AC-DC conversion, suitable for corresponding device selection
Functional module.The functional module is included in AC/DC universal port.
Step 5, equipment operation, with reference to driver and AC-DC conversion function, main program control platform realizes corresponding end
The management and operation of mouth energy device.
The embodiment of the present invention is based on IGBT module, using PWM technologies and IGBT device as core, collects on a hardware device
Into multiple electric signal modular converters, to realize that AC-AC is changed, DC is changed, exchange is straight by a hardware device
Circulation change with DC-AC translation function, various energy internet devices can be accessed with unified general hardware interface, passed through
The alternating current-direct current form conversion of electric energy needed for Digital Control realization, substantially increases energy conversion efficiency, reduces energy conversion
Loss, has good beneficial effect.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (9)
1. a kind of alternating current-direct current port device, it is characterised in that including AC-AC modular converter, DC modular converter, hand over
Flow DC conversion modules, DC-AC modular converter and switch control module；
The AC-AC modular converter, for being modulated and being filtered using pulse-width modulation PWM technology, by the friendship of input
Stream signal is converted to the AC signal output of target frequency；
The DC modular converter, for carrying out copped wave using pulse-width modulation PWM technology, the direct current signal of input is changed
For the DC signal output of target amplitude and dutycycle；
The AC DC modular converter, for being modulated using pulse-width modulation PWM technology, the AC signal of input is changed
For the DC signal output of target amplitude and dutycycle；
The DC-AC modular converter, for carrying out copped wave using pulse-width modulation PWM technology and being filtered, by the straight of input
Stream signal is converted to the AC signal output of target frequency；
The switch control module, for carrying out switch switching, turned with realizing that the alternating current-direct current port device carries out AC-AC
Change, DC is changed, AC DC conversion or DC-AC are changed.
2. alternating current-direct current port device according to claim 1, it is characterised in that also including direct-flow input end mouth, direct current/mono-
Cross streams output port, ac input end mouth, ac output end mouth and straight conversion output port；
The switch control module, is further used for：
The direct-flow input end mouth and the ac output end mouth are closed to inductive switch, to realize conversion of the direct current to exchange；Or
Person
The ac input end mouth is closed with the direct current/single phase ac output port to inductive switch, to realize that exchange is arrived respectively
The conversion of direct current or the conversion of AC to AC；Or
The direct-flow input end mouth and the straight conversion output port are closed to inductive switch, to realize turning for DC-to-DC
Change.
3. alternating current-direct current port device according to claim 2, it is characterised in that also include：With the ac output end mouth
Low pass filter in parallel；
One end connection PWM demodulator circuit of the LPF, the other end connect user equipment by output port, are used for
Direct current is filtered out to the clutter in exchange transfer process.
4. alternating current-direct current port device according to claim 3, it is characterised in that
The AC-AC modular converter, is further used for：The AC signal of input is first formed into target frequency by PWM
Corresponding direct current signal, then reverts to the AC signal of the target frequency by low pass filter, and is exported；
The DC modular converter, is further used for：The direct current signal of input is subjected to copped wave by pwm circuit, with reality
The change of existing direct current signal amplitude and dutycycle, so as to obtain the direct current signal of target amplitude and dutycycle, and is exported；
The AC DC modular converter, is further used for：AC signal based on input, the break-make of circuit switch device is entered
Row control, obtains a series of equal pulse of amplitudes；Based on PWM modulation technology, the width of each pulse is carried out by pre-defined rule
Modulation, so as to obtain the direct current signal of target amplitude and dutycycle, and is exported.
The DC-AC modular converter, is further used for：The direct current signal of input is first subjected to copped wave by pwm circuit, with
Change voltage, dutycycle and the AC signal frequency of equal value of direct current signal；Area equivalent principle is then based on, by the letter after copped wave
Number by the low pass filter of target frequency, so as to obtain the AC signal of target frequency, and exported.
A kind of 5. AC-DC conversion method based on alternating current-direct current port device, it is characterised in that including：
Energy device is accessed into network using the alternating current-direct current port device, establishes communication link and energy connecting link；
According to the unit type of the energy device, electric energy form and signal frequency, to the telecommunications by the energy device
Number carry out AC-AC conversion, DC conversion, AC DC conversion or DC-AC conversion.
6. according to the method for claim 5, it is characterised in that the unit type according to the energy device, electric energy
Form and signal frequency, AC-AC conversion, DC conversion, exchange are carried out to the electric signal by the energy device
Direct current is changed or DC-AC conversion, further comprises：
Unit type, electric energy form and the signal frequency of the energy device are obtained by the communication link；
According to the unit type and electric energy form, driver corresponding to selection；
According to the electric energy form and the signal frequency, the alternating current-direct current port device is controlled to enter using the driver
The conversion of row AC-AC, DC conversion, AC DC conversion or DC-AC conversion, to realize to being set by the energy
The conversion of standby electric signal.
7. according to the method for claim 6, it is characterised in that described to control the alternating current-direct current end using the driver
Jaws equipment carries out AC-AC conversion, DC conversion, AC DC conversion or DC-AC conversion, further comprises：
The direct-flow input end mouth and the ac output end mouth are closed to inductive switch, to realize conversion of the direct current to exchange；Or
Person
The ac input end mouth is closed with the direct current/single phase ac output port to inductive switch, to realize that exchange is arrived respectively
The conversion of direct current or the conversion of AC to AC；Or
The direct-flow input end mouth and the straight conversion output port are closed to inductive switch, to realize turning for DC-to-DC
Change.
8. according to the method described in claim any one of 5-7, it is characterised in that the progress AC-AC conversion, direct current are straight
Circulation is changed, AC DC conversion or DC-AC are changed, and is further comprised：
First then the AC signal of input is passed through into LPF by direct current signal corresponding to PWM formation target frequency
Device reverts to the AC signal of the target frequency, and is exported；Or
The direct current signal of input is subjected to copped wave by pwm circuit, to realize the change of direct current signal amplitude and dutycycle, so as to
The direct current signal of target amplitude and dutycycle is obtained, and is exported；Or
AC signal based on input, the break-make of circuit switch device is controlled, obtains a series of equal pulse of amplitudes；
Based on PWM modulation technology, the width of each pulse is modulated by pre-defined rule, so as to obtain the straight of target amplitude and dutycycle
Signal is flowed, and is exported；Or
The direct current signal of input is first subjected to copped wave by pwm circuit, to change the voltage of direct current signal, dutycycle and friendship of equal value
Flow signal frequency；Area equivalent principle is then based on, the low pass filter by the signal after copped wave by target frequency, so as to obtain
The AC signal of target frequency is obtained, and is exported.
9. the method according to claim 5 or 6, it is characterised in that the driver is in the alternating current-direct current port device
Interior operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710976259.3A CN107612033A (en) | 2017-10-19 | 2017-10-19 | A kind of AC/DC universal port device and conversion method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710976259.3A CN107612033A (en) | 2017-10-19 | 2017-10-19 | A kind of AC/DC universal port device and conversion method |
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| CN107612033A true CN107612033A (en) | 2018-01-19 |
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| CN201710976259.3A Pending CN107612033A (en) | 2017-10-19 | 2017-10-19 | A kind of AC/DC universal port device and conversion method |
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| CN111969719A (en) * | 2020-07-02 | 2020-11-20 | 江苏能来能源互联网研究院有限公司 | Energy router |
| US11811263B2 (en) | 2018-11-30 | 2023-11-07 | Gree Electric Appliances, Inc. Of Zhuhai | Power conversion method, apparatus, and device, and medium |
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