CN109245733A - A kind of linear power amplifier of multivoltage output - Google Patents
A kind of linear power amplifier of multivoltage output Download PDFInfo
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- CN109245733A CN109245733A CN201811026324.7A CN201811026324A CN109245733A CN 109245733 A CN109245733 A CN 109245733A CN 201811026324 A CN201811026324 A CN 201811026324A CN 109245733 A CN109245733 A CN 109245733A
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- Prior art keywords
- power amplifier
- linear power
- output
- univoltage
- range
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45396—Indexing scheme relating to differential amplifiers the AAC comprising one or more switches
Abstract
A kind of linear power amplifier of multivoltage output, comprising: at least one univoltage range linear power amplifier, a switch unit are connect, for exporting multiple alternating voltages and/or multiple DC voltages with each univoltage range linear power amplifier.Above-mentioned technical proposal can expand voltage output range or power bracket, realize the alternating current-direct current output of different voltages grade.
Description
Technical field
The invention belongs to electrical test apparatus fields, and in particular to a kind of linear power amplifier of multivoltage output.
Background technique
Currently, linear power amplifier uses univoltage output area, under multivoltage range, frequently with multiple linear function
Rate amplifier exports different voltage respectively.In prior art, difference is exported respectively using multiple linear power amplifiers
Voltage, utilization rate of equipment and installations is high.Simultaneously as linear power amplifier belongs to invaluable equipment, and the effect of equipment
Rate (output power/input power) is not high, will also result in that cost input is excessively high, and capacity utilization is lower, power demands it is excessive and
It generates heat serious problem.Linear power amplifier single machine can only export single voltage range, for the application under multivoltage range
It limits more.
Summary of the invention
(1) goal of the invention
The object of the present invention is to provide the linear powers of a kind of exchange for realizing different voltages grade and/or direct current output to put
Big device.
(2) technical solution
To solve the above problems, the present invention provides a kind of linear power amplifiers of multivoltage output, comprising: N number of list
Voltage range linear power amplifier, wherein N >=2；Univoltage range linear power amplifier has the first output end and second
Output end；Switch unit is connect, for exporting multiple alternating voltages with each univoltage range linear power amplifier
And/or multiple DC voltages.
Further, the switch unit includes multiple identical with the univoltage range linear power amplifier quantity cuts
Change basic unit；Each switch base unit includes multi-tap transformer and switch matrix.
Further, each switch base unit passes through the switch matrix and each linear function of univoltage range
Rate amplifier connection；Each switch base unit is put by the linear power that the switch matrix is connected to multivoltage output
The external interface of big device.
Further, the switch matrix includes dc switch matrix；The switch base unit includes: multi-tap transformer
With the dc switch matrix that the multi-tap transformer input side is set, linear power amplifier output be direct current when,
For each linear power amplifier to be connected, to expand direct voltage output range.
Further, the switch matrix includes alternating-current switch matrix；The switch base unit includes: multi-tap transformer
With the alternating-current switch matrix that the multi-tap transformer input side and/or outlet side is arranged in, being used for will be each when exchanging output
A linear power amplifier is connected after being connected and/or being depressured expansion stream, to expand alternating voltage output area and power output
Range.
Further, the dc switch matrix includes that direct current output enables contactor and with direct current connects contactor；Multiple institutes
Stating univoltage range linear power amplifier includes: univoltage range linear power amplifier 1 and univoltage range linear power
Amplifier 2；First output end of the univoltage range linear power amplifier 1 enables contactor KM by direct current output1EEven
It is connected to the DC output end T of univoltage range Linear Power Amplifier 1DC1-1, the second of the univoltage range linear power amplifier 1 be defeated
Outlet is connected to the direct current output reference point end T of univoltage range Linear Power Amplifier 1DC1-2；The univoltage range linear power is put
First output end of big device 2 connects contactor KM by direct current1-2It is connected to the univoltage range linear power amplifier 1
Second output terminal TDC1-2, wherein direct current output reference point end TDC1-2Also it is used as the univoltage range linear power amplifier 2
DC output end.
Further, the dc switch matrix includes that direct current output enables contactor and with direct current connects contactor；The list
The quantity of voltage range linear power amplifier is greater than 2, and each univoltage range linear power amplifier is denoted as univoltage
Range linear power amplifier n, 1 < n < N；The 1st univoltage range linear power amplifier is drawn straight by switch unit
Flow output end TDC1-1With direct current output reference point end TDC1-2；When being used alone as univoltage range linear power amplifier 1
DC output interface；Remaining each described univoltage range linear power amplifier n draws direct current output by switch unit
Hold TDC(n-1)-2And TDCn-2, as univoltage range linear power amplifier n be used alone when interface；Wherein, the the 2nd to N-1
A univoltage range linear power amplifier has independent direct current output reference point；The 1st univoltage range line
Property power amplifier the first output end by direct current enable contactor KM1EIt is connected to the 1st linear function of univoltage range
The DC output end T of rate amplifierDC1-1, the second output terminal of the 1st univoltage range linear power amplifier is connected to
The direct current output reference point end T of the 1st univoltage range linear power amplifierDC1-2；2nd to N-1 single electricity
The first output end of range linear power amplifier is pressed to connect contactor KM by direct current respectively(n-1)-nIt is connected to the 1st to N-2
The second output terminal of a univoltage range linear power amplifier；2nd to the N-1 univoltage range linear power is put
The second output terminal of big device is respectively connected to respective direct current output reference point end TDCn-2；Univoltage range described in n-th is linear
First output end of power amplifier connects contactor KM by direct current(N-1)-NIt is connected to the N-1 univoltage range lines
The DC output end T of property power amplifierDC(N-1)-2；The second output terminal of univoltage range linear power amplifier described in n-th
Contactor KM is enabled by direct currentNEIt is connected to the direct current output reference point end T of itselfDCN-2；Univoltage range linear prower amplifier
Direct current after the DC output end of device 1 also expands voltage range as the series connection of multiple univoltage range linear power amplifiers is defeated
Outlet；The DC output end of univoltage range linear power amplifier N is also used as multiple univoltage range linear power amplifiers
The direct current output reference point end connected after expanding voltage range.
Further, the alternating-current switch matrix includes: exchange input contactor KMn, exchange output contactor KMnAC, exchange
Gear selecting contactor KMnACiContactor KM is connected with exchangingn-(n-1)；The input side of each switch base unit passes through friendship respectively
Stream input contactor KMNIt is connected to the first input end of corresponding univoltage range linear power amplifier；Each switching
The outlet side of basic unit includes: ac output end, and each secondary side tap of the multi-tap transformer passes through exchange gear selecting respectively
Contactor KMnACiIt is connected to exchange output contactor KMnAC, then pass through exchange output contactor KMnACIt is connected to ac output end；
Exchange output reference end, the secondary side reference end of multi-tap transformer are connected to the exchange output reference end of switch unit；It is described more
A switch base unit passes through exchange connection contactor KM respectively between any twon-(n-1)Connection.
Further, the ac output end includes: first voltage output end, second voltage output end and tertiary voltage output
End；The alternating voltage of the first voltage output end output is 360V；The alternating voltage of second voltage output end output is
230V；The alternating voltage of the tertiary voltage output end output is 180V.
(3) beneficial effect
Above-mentioned technical proposal of the invention has following beneficial technical effect: switch unit is respectively connected at least one
Univoltage range linear power amplifier, and then go here and there each linear power amplifier in exchange and/or direct current output
Connection is in parallel, to expand voltage output range or power bracket, realizes the exchange and/or direct current output of different voltages grade.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the linear power amplifier of the multivoltage output of the embodiment of the present invention；
Fig. 2 is the line of the multivoltage output of the linear power amplifier with 2 univoltage ranges of the embodiment of the present invention
The structural schematic diagram of property power amplifier；
Fig. 3 is the line of the multivoltage output of the linear power amplifier with 3 univoltage ranges of the embodiment of the present invention
The structural schematic diagram of property power amplifier.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, With reference to embodiment and join
According to attached drawing, the present invention is described in more detail.It should be understood that these descriptions are merely illustrative, and it is not intended to limit this hair
Bright range.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to avoid this is unnecessarily obscured
The concept of invention.
Fig. 1 is the structural schematic diagram of the linear power amplifier of the embodiment of the present invention.
Referring to Fig. 1, a kind of linear power amplifier of multivoltage output, comprising: N number of univoltage range linear power is put
Big device, N >=2；Univoltage range linear power amplifier has the first output end and second output terminal；Wherein, switch unit with
Each univoltage range linear power amplifier connection, for exporting multiple alternating voltages and/or multiple DC voltages, passes through drop
Concatenated mode increases the power of exchange output after pressure, to expand the output area or power model of direct current and/or alternating voltage
It encloses.
Univoltage range linear power amplifier refers to the linear power amplifier that can only export single voltage range, example
Such as: individually exporting the linear power amplifier of voltage within the scope of 115VAC-120VAC.
Wherein, switch unit includes that multiple switchings identical with the univoltage range linear power amplifier quantity are basic
Unit, each switch base unit include multi-tap transformer and switch matrix, and each switch base unit passes through switch matrix
It is connect with the output end of each univoltage range linear power amplifier.Each switch base unit passes through the cubicle switchboard
Battle array is connected to the external interface of the linear power amplifier of multivoltage output, wherein external interface refers to that the right is all in Fig. 1
Port, including all TACPort and all TDCPort.
Preferably, switch matrix is the form that matrix is arranged as by multiple switch, can be realized using contactor.
In one embodiment, switch base unit includes: multi-tap transformer and is arranged defeated in multi-tap transformer
The dc switch matrix for entering side, linear power amplifier output be direct current when, for by each group linear power amplifier into
Row series connection, to expand direct voltage output range and power output range.Wherein, the transformer secondary winding packet in switch unit
Boosting winding and decompression winding two types are included, due to the characteristic that the former secondary side power of the power of transformer is identical, secondary side decompression can
To improve current output capability, winding is depressured by secondary side of connecting and is boosted again after stream is expanded in decompression with realizing, to expand alternating current
Press output area and power output range.Please continue to refer to Fig. 1, by taking univoltage range linear power amplifier 1 as an example, KM1AC1,
KM1AC2, KM1AC3The vice-side winding connected can be boosting winding, be also possible to be depressured winding, multiple univoltage ranges are linear
After power amplifier is by decompression winding decompression, according to transformation two sides power conservation it is found that output current capacity can be expanded, and
According to series connection partial pressure it is found that transformer secondary series connection can be expanded voltage output range in switch unit, after decompression, expand
Current output capability, after series connection, expands voltage output range, so, this mode can expand power output range.
In one embodiment, dc switch matrix includes that direct current output enables contactor and with direct current connects contactor；
Wherein, as N=2, i.e., the quantity of univoltage range linear power amplifier is 2, is denoted as the linear function of univoltage range respectively
Rate amplifier 1 and univoltage range linear power amplifier 2；Wherein, the first output of univoltage range linear power amplifier 1
End enables contactor KM by direct current output1EIt is connected to the DC output end T of univoltage range Linear Power Amplifier 1DC1-1, the list
The second output terminal of voltage range linear power amplifier 1 is connected to the direct current output reference point of univoltage range Linear Power Amplifier 1
Hold TDC1-2；First output end of univoltage range linear power amplifier 2 connects contactor KM by direct current1-2It is connected to described
The second output terminal T of univoltage range linear power amplifier 1DC1-2, wherein direct current output reference point end TDC1-2Also it is used as institute
State the DC output end of univoltage range linear power amplifier 2.
The case where below by an example to the univoltage range linear power amplifier N=2 of the embodiment of the present invention into
Row illustrates:
Referring to Fig. 2, being denoted as univoltage range linear power amplifier A ' and univoltage range linear prower amplifier respectively
Device C '；Univoltage range linear power amplifier A ' has the first output end a1 and second output terminal b1, and univoltage range is linear
Power amplifier C ' has the first output end a2 and second output terminal b2；
The first output end a1 of univoltage range linear power amplifier A ' enables contactor KM by direct current output1EConnection
To the DC output end T of univoltage range linear power amplifier A 'DC1-1, second output terminal b1 be connected to A ' direct current output ginseng
Examination point end TDC1-2；The second output terminal b2 of univoltage range linear power amplifier C ' enables contactor KM by direct current output2E
It is connected to the direct current output reference point end T of univoltage range linear power amplifier C 'DC2-2, the first output end a2 pass through direct current connect
Meet contactor KM1-2It is connected to the second output terminal b1 of univoltage range linear power amplifier A ', wherein direct current output reference
Point TDC1-2Also the DC output end as univoltage range linear power amplifier C '.In the embodiment of the application, KM1-2
It is equivalent to and univoltage range linear power amplifier A ' and univoltage range linear power amplifier C ' is together in series, thus
KM1-2Closure and KM1EAnd KM2EIt, can be respectively in T when being also closedDC1-1And TDC1-2End, TDC1-2And TDC2-2It is straight that end obtains 240V
Galvanic electricity pressure, or in TDC1-1And TDC2-2End obtains 480V DC voltage.
In another embodiment, dc switch matrix includes that the enabled contactor of direct current output connects contact with direct current
Device；The quantity of univoltage range linear power amplifier is greater than 2, and each univoltage range linear power amplifier is denoted as univoltage
Range linear power amplifier n, 1 < n < N；1st univoltage range linear power amplifier is defeated by switch unit extraction direct current
Outlet TDC1-1With direct current output reference point end TDC1-2；Direct current when being used alone as univoltage range linear power amplifier 1
Output interface；Remaining each described univoltage range linear power amplifier n draws DC output end by switch unit
TDC(n-1)-2And TDCn-2, as univoltage range linear power amplifier n be used alone when interface；Wherein, the 2nd to N-1
The univoltage range linear power amplifier has independent direct current output reference point；The 1st univoltage range is linear
First output end of power amplifier enables contactor KM by direct current1EIt is connected to the 1st univoltage range linear power
The DC output end T of amplifierDC1-1, the second output terminal of the 1st univoltage range linear power amplifier is connected to the 1st
The direct current output reference point end T of a univoltage range linear power amplifierDC1-2；2nd to the N-1 univoltage model
The first output end for enclosing linear power amplifier connects contactor KM by direct current respectively(n-1)-nIt is connected to the 1st to the N-2 institute
The second output terminal for the univoltage range linear power amplifier stated；2nd to the N-1 univoltage range linear power amplifier
Second output terminal be respectively connected to respective direct current output reference point end TDCn-2；Univoltage range linear power described in n-th
First output end of amplifier connects contactor KM by direct current(N-1)-NIt is connected to the N-1 linear function of univoltage range
The DC output end T of rate amplifierDC(N-1)-2；The second output terminal of univoltage range linear power amplifier described in n-th passes through
Direct current enables contactor KMNEIt is connected to the direct current output reference point end T of itselfDCN-2；Univoltage range linear power amplifier 1
DC output end also as multiple univoltage range linear power amplifiers series connection voltage range is expanded after direct current output
End；The DC output end of univoltage range linear power amplifier N is also used as multiple univoltage range linear power amplifier strings
Join the direct current output reference point end after expanding voltage range.
Optionally, switch base unit includes: multi-tap transformer and setting in multi-tap transformer input side and/or defeated
The alternating-current switch matrix of side out, for each group linear power amplifier to be carried out series connection and/or parallel connection when exchanging output, to expand
Big voltage output range and power output capacity.Wherein, the alternating-current switch matrix includes: exchange input contactor KMn, exchange
Output contactor KMnAC, exchange gear selecting contactor KMnACi(i represents the number of exchange gear selecting contactor, for example, i takes in Fig. 2
Value for 3) and exchange connect contactor KMn-(n-1)；The input side of each switch base unit passes through exchange input respectively and connects
Tentaculum KMnIt is connected to the first input end of corresponding univoltage range linear power amplifier；Each switch base unit
Outlet side include: ac output end, each secondary side tap of the multi-tap transformer passes through exchange gear selecting contactor respectively
KMnACiIt is connected to exchange output contactor KMnAC, then pass through exchange output contactor KMnACIt is connected to ac output end；It exchanges defeated
Reference end out, the secondary side reference end of multi-tap transformer are connected to the exchange output reference end of switch unit；The multiple switching
Basic unit passes through exchange connection contactor KM respectively between any twon-(n-1)Connection.Specifically, multiple switch base units are successively
And it is connected to the exchange output ginseng of the switch base unit positioned at head end by exchange connection contactor respectively between any two
Examination point exchanges on output contactor with the switch base unit positioned at end.Exchange gear selecting contactor is located at switch unit
Outlet side, and quantity >=2, each exchange gear selecting contactor are respectively connected on each winding on multiwinding transformer pair side.Often
The outlet side of a switch base unit includes at least: first voltage output end, second voltage output end and tertiary voltage output end.
The alternating voltage of first voltage output end output is 360V；The alternating voltage of second voltage output end output is 230V；Third electricity
The alternating voltage for pressing output end output is 180V；Certainly, the voltage output end that the outlet side of the embodiment of the present invention includes can be with
It is 2 or 4 and 4 or more, which is not limited by the present invention.
In addition, the outlet side of each switch base unit further includes an output end, as corresponding linear prower amplifier
The exchange of device exports reference point.Switch base unit can realize three kinds of voltages of output using triple stub transformer, match splice grafting
Whether the output of the road voltage may be implemented in tentaculum.
For N=2, the quantity of switch base unit is also 2, then the first output end of linear power amplifier A '
It is additionally provided between a1 and the input side of multi-tap transformer and exchanges input contactor KM1, the first of linear power amplifier C '
It is additionally provided between output end a2 and the input side of multi-tap transformer and exchanges input contactor KM2, multi-tap transformer it is defeated
It out include A phase AC output interface TAC1-1, A phase exchange output reference point TAC1-2, B phase AC output interface TAC2-1It is exchanged with B phase
Export reference point TAC2-2。
In the embodiments of the present disclosure, the quantity phase of the quantity of switch base unit and univoltage range linear power amplifier
Together, and the output end of each univoltage range linear power amplifier is connect with the input side of each switch base unit.
In the embodiments of the present disclosure, VDC refers to that DC voltage, VAC refer to alternating voltage.
The working principle of the embodiment of the present application is illustrated below by an example:
Assuming that voltage analog system needs to export 180VAC, tri- kinds of electricity of 360VAC, 540VDC in different operating condition Imitatings
Range is pressed, power demand is respectively 100kVA, 200kVA, 150kW.Existing linear power amplifier is three groups of list output powers
For 100kVA power amplifier, rated output voltage is that 240V (is defaulted as direct current, such as makees exchange output, peak value 240V has
Valid value is about 170V).
Please continue to refer to Fig. 3, by taking 3 switch base units and 3 linear power amplifiers as an example, hereinafter referred to as linearly
Power amplifier A ', linear power amplifier B ' and linear power amplifier C '；
Three linear power amplifier rated power are 100kVA, and voltage rating is 240V.Three linear powers are put
Big device is used alone, and 240Vp-p is equivalent to 170VACrms, is unable to satisfy simulation output 180VAC, the requirement of 100kVA, also without
Method meets simulation output 360VAC, and the requirement of 200kVA, it is even more impossible to meet simulation output 540VDC, the requirement of 150kVA.
In Fig. 3, KM1、KM2、KM3Contactor is inputted for exchange；KM1E、KM3EContactor is enabled for direct current；KM1-2、KM2-3For
Direct current connects contactor, KM1-2And KM2-3Effect be expand DC voltage output area and power bracket；KM1AC1、KM1AC2、
KM1AC3、KM2AC1、KM2AC2、KM2AC3、KM3AC1、KM3AC2、KM3AC3To exchange gear selecting contactor；KM1AC、KM2AC、KM3ACFor exchange
Output contactor；KM2-1、KM3-2Contactor is connected for exchange, effect is to expand the output area and power bracket of alternating voltage.
Interface TAC1-1、TAC2-1、TAC3-2Respectively three-phase alternating current output interface (A phase exchanges output, B phase exchange output exchanged with C phase it is defeated
Out), interface TAC1-2、TAC2-2、TAC3-2The respectively reference of A, B, C three-phase alternating current output；Interface TDC1-1、TDC1-2It is straight for single module
(direct current of linear power amplifier A ' is defeated for stream output end (direct current output of linear power amplifier A ') and single module direct current output
Reference end out), while interface TDC1-1Can be used as multimode (including linear power amplifier A ', linear power amplifier B ' and
Linear power amplifier C ') concatenated direct current output；In KM1-2When closure, interface TDC1-2、TDC2-2It is defeated to can be used as single module direct current
The reference end of outlet (linear power amplifier B ') and single module direct current output (linear power amplifier B ')；In KM2-3Closure
When, interface TDC2-2、TDC3-2It is defeated for single module DC output end (direct current output of linear power amplifier C ') and single module direct current
The reference end of (linear power amplifier C ') out, wherein TDC3-2Also multimode (including linear power amplifier A ', line be can be used as
Property power amplifier B ' and linear power amplifier C ') series connection after direct current output reference end.
Under direct current output mode, by KM1、KM2And KM3It disconnects, the output of power amplification system passes through to KM1E, KM1-2,
KM2-3, KM3EOn-off controlled, available different output voltage specifically includes following four situation:
(1) it is closed KM1E, can be in interface TDC1-1、TDC1-2End obtains the direct current output range of 240VDC；
(2) it is closed KM1-2, can be in interface TDC1-2、TDC2-2End obtains the direct current output range of 240VDC；
(3) it is closed KM1EAnd KM1-2, can be in interface TDC1-1、TDC2-2It holds and obtains the direct current output range of 480VDC, or
Interface TDC1-1、TDC1-2End and interface TDC1-2、TDC2-2End respectively obtains the direct current output range of 240VDC；
(4) it is closed KM1E、KM1-2、KM2-3And KM3E, in interface TDC1-1、TDC3-2End obtains the direct current output range of 720VDC,
Output power 300kVA, the output area of the 540VDC met the requirements at this time and 540VDC output under 150kW power requirement；
In TDC1-1、TDC1-2End obtains the direct current output range of 240VDC, while in TDC1-2、TDC3-2End obtains the direct current output of 480VDC
Range；In TDC1-1、TDC2-2End obtains the direct current output range of 480VDC, while in TDC2-2、TDC3-2End obtains the direct current of 240VDC
Output area.
It exchanges under output mode, disconnects contactor KM1E、KM1-2、KM2-3And KM3E, by the on-off to remaining contactor into
Row control, available different output voltage specifically include following four situation:
(1) it is closed KM1, KM2, KM3.Transformer winding exports three taps and 240Vp-p exchange is converted into 360VAC respectively
(no-load voltage ratio 17:36, corresponding gear selecting contactor are KM1AC1, KM2AC1, KM3AC1), (no-load voltage ratio 17:23, corresponding gear selecting connect 230VAC
Tentaculum is KM1AC2, KM2AC2, KM3AC2), 180VAC (no-load voltage ratio 17:18, corresponding gear selecting contactor be KM1AC3, KM2AC3, KM3AC3)。
(2) it is closed KM1AC, KM2AC, KM3AC, enable three-phase alternating current and independently export.It is closed KM1AC1, KM2AC1, KM3AC1, can be with
Obtain the alternating voltage output area of three groups of 360VAC, every phase power 100kVA.
(3) it is closed KM1AC, KM2AC, it is closed KM1AC1, KM2AC3, KM3AC3, it is closed KM3-2, disconnect KM2-1, can be in TAC2-1、
TAC3-2End obtains 360VAC voltage output range, power 200kVA, meet simulation output 360VAC three-phase alternating voltage range and
The demand of power, in TAC1-1、TAC1-2End obtains 360VAC voltage output range, power 100KVA.Connect contactor KM3-2
Closure expand the output power of a phase alternating voltage.
(4) KM1, KM2, KM are closed1AC1, KM2AC1, it is closed KM2-1, KM1AC, can be in TAC1-1、TAC2-2End obtains 460VAC
Exchange output, power 200kVA expands the range of ac output voltage at this time.
It should be noted that being closed a certain when above direct current is with every kind of voltage output for exchanging output mode
A little contactors then represent remaining contactor and are turned off.Such as: in (4) kind for exchanging output mode, it is closed KM1AC1,
KM2AC1, KM2-1, KM1AC, then KM is represented1E, KM1-2, KM2-3, KM3E,KM3, KM1AC2, KM1AC3, KM2AC2, KM2AC3, KM3AC1,
KM3AC2, KM3AC3, KM3AC,KM3-2, KM2ACIt is turned off.
By the way that linear power amplifier switch base unit and several (straight) streams of friendship are connected contactor cooperation, can be realized
Expand output voltage, the output power of former three groups of univoltage range linear power amplifiers, adaptation multivoltage, alternating current-direct current mixing are defeated
Application environment out.
The embodiment of the present disclosure utilizes multi-tap transformer and contactor, and the basic switching for constituting linear power amplifier is single
Member, and basic switch unit and some contactors are utilized, constitute the linear power amplifier switching architecture of AC and DC mixing.
Compared to existing scheme, the embodiment of the present disclosure improves the utilization rate of equipment and installations of linear power amplifier single machine, compared to conventionally employed
For single machine exports voltage to be simulated respectively, the power demands of system entirety are reduced, linear power amplifier is improved and exists
Application space under multivoltage range.By taking the Linear Power Amplifier of 230VAC output as an example, the voltage of 115VAC is if desired exported, is used
This switching architecture is compared with using the individually linear power amplifier of output 115VAC, according to the cost of Linear Power Amplifier and power amplifier function
The directly proportional feature of rate, considers the cost of this switching architecture, can save equipment cost spending 70%；Consider 115VAC output work
Power demand is put to obtain, power demands 80% are saved, reduces system heat generation 80%；The volume for considering 115VAC output power amplifier, is reduced
Space requirement 85%.
It should be noted that the position of each contactor is not limited thereto calmly, for each list in the embodiment of the present invention
For voltage range linear power amplifier, exchange can also be inputted into contactor KMnSetting enables contactor or straight in direct current
Stream connection contactor KM(n-1)-nBetween the output end of univoltage range linear power amplifier, such as: first by KM1With univoltage
The output end of range linear power amplifier 1 connects, then passes through KM1EIt is connected to TDC1-1, should all belong to protection scope of the present invention it
It is interior.For the exchange output contactor KM of multi-tap transformer outlet side settingnACContactor KM is connected with exchangingn-(n-1)For,
It can also will exchange output contactor KMnACIt is connect with multi-tap transformer outlet side, using KMn-(n-1), it is connected to electricity later
The output interface side of road right end, i.e. exchange output contactor KMnACAlso it can be set in the position close to multi-tap transformer outlet side
Place is set, and exchanges connection contactor KMn-(n-1)It is arranged at the position for being relatively distant from multi-tap transformer outlet side.
In addition, by Fig. 1 to Fig. 3 it is found that interface end T on the right side of circuitDCn-2With the of univoltage range linear power amplifier
On the connected route of two output ends and interface end TACn-2It is not set on the route being connected with multi-tap transformer secondary to contact
Device, but invention is not limited thereto, the interface end T on the right side of circuitDCn-2It is defeated with the second of univoltage range linear power amplifier
A contactor and interface end T also can be set on the connected route of outletACn-2The route being connected with multi-tap transformer secondary
On contactor also can be set.
It should be understood that above-mentioned specific embodiment of the invention is used only for exemplary illustration or explains of the invention
Principle, but not to limit the present invention.Therefore, that is done without departing from the spirit and scope of the present invention is any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.In addition, appended claims purport of the present invention
Covering the whole variations fallen into attached claim scope and boundary or this range and the equivalent form on boundary and is repairing
Change example.
Claims (9)
1. a kind of linear power amplifier of multivoltage output characterized by comprising
N number of univoltage range linear power amplifier, wherein N >=2；
Univoltage range linear power amplifier has the first output end and second output terminal；
Switch unit is connect with each univoltage range linear power amplifier, for export multiple alternating voltages and/or
Multiple DC voltages.
2. a kind of linear power amplifier of multivoltage output according to claim 1, which is characterized in that the switching is single
Member includes multiple switch base units identical with the univoltage range linear power amplifier quantity；
Each switch base unit includes multi-tap transformer and switch matrix.
3. a kind of linear power amplifier of multivoltage output according to claim 2, which is characterized in that cut described in each
It changes basic unit and is connect by the switch matrix with each univoltage range linear power amplifier；
Each switch base unit is connected to pair of the linear power amplifier of multivoltage output by the switch matrix
External tapping.
4. a kind of linear power amplifier of multivoltage output according to claim 2, which is characterized in that the cubicle switchboard
Battle array includes dc switch matrix；
The switch base unit includes: multi-tap transformer and the dc switch that the multi-tap transformer input side is arranged in
Matrix, when the output of linear power amplifier is direct current, for each univoltage range linear power amplifier to be connected, with
Expand direct voltage output range.
5. a kind of linear power amplifier of multivoltage output according to claim 2, which is characterized in that the cubicle switchboard
Battle array includes alternating-current switch matrix；
The switch base unit includes: multi-tap transformer and is arranged in the multi-tap transformer input side and/or output
The alternating-current switch matrix of side, after each linear power amplifier being connected and/or being depressured expansion stream when exchanging output
Series connection, to expand alternating voltage output area and power output range.
6. a kind of linear power amplifier of multivoltage output according to claim 3, which is characterized in that the direct current is opened
Closing matrix includes that direct current output enables contactor and with direct current connects contactor；
Multiple univoltage range linear power amplifiers include: univoltage range linear power amplifier 1 and univoltage model
Enclose linear power amplifier 2；
First output end of the univoltage range linear power amplifier 1 enables contactor KM by direct current output1EIt is connected to
The DC output end T of univoltage range Linear Power Amplifier 1DC1-1, the second output terminal of the univoltage range linear power amplifier 1
It is connected to the direct current output reference point end T of univoltage range Linear Power Amplifier 1DC1-2；
First output end of the univoltage range linear power amplifier 2 connects contactor KM by direct current1-2It is connected to described
The second output terminal T of univoltage range linear power amplifier 1DC1-2, wherein direct current output reference point end TDC1-2Also it is used as institute
State the DC output end of univoltage range linear power amplifier 2.
7. a kind of linear power amplifier of multivoltage output according to claim 3, which is characterized in that the direct current is opened
Closing matrix includes that direct current output enables contactor and with direct current connects contactor；
The quantity of the univoltage range linear power amplifier is greater than 2, each univoltage range linear power amplifier
It is denoted as univoltage range linear power amplifier n, 1 < n < N；
The 1st univoltage range linear power amplifier draws DC output end T by switch unitDC1-1And direct current output
Reference point end TDC1-2；
Remaining each described univoltage range linear power amplifier n draws DC output end T by switch unitDC(n-1)-1
And TDCn-2；
Wherein, the 2nd to the N-1 univoltage range linear power amplifier has independent direct current output reference point；
First output end of the 1st univoltage range linear power amplifier enables contactor KM by direct current1EIt is connected to
The DC output end T of the 1st univoltage range linear power amplifierDC1-1, the 1st univoltage range linear power
The second output terminal of amplifier is connected to the direct current output reference point end of the 1st univoltage range linear power amplifier
TDC1-2；
First output end of the 2nd to the N-1 univoltage range linear power amplifier is connected by direct current contact respectively
Device KM(n-1)-nIt is connected to the second output terminal of the 1st to the N-2 univoltage range linear power amplifier；2nd to
The second output terminal of N-1 univoltage range linear power amplifier is respectively connected to respective direct current output reference point end
TDCn-2；
First output end of univoltage range linear power amplifier described in n-th connects contactor KM by direct current(N-1)-NConnection
To the DC output end T of the N-1 univoltage range linear power amplifiersDC(N-1)-2；Univoltage range described in n-th
The second output terminal of linear power amplifier enables contactor KM by direct currentNEIt is connected to the direct current output reference point end of itself
TDCN-2；
The DC output end of univoltage range linear power amplifier 1 is also used as multiple univoltage range linear power amplifier strings
Join the DC output end after expanding voltage range；
The DC output end of univoltage range linear power amplifier N is also used as multiple univoltage range linear power amplifier strings
Join the direct current output reference point end after expanding voltage range.
8. a kind of linear power amplifier of multivoltage output according to claim 5 or 6, which is characterized in that the friendship
Stream switch matrix includes: exchange input contactor KMn, exchange output contactor KMnAC, exchange gear selecting contactor KMnACiWith exchange
Connect contactor KMn-(n-1)；
The input side of each switch base unit passes through exchange input contactor KM respectivelynIt is connected to corresponding univoltage model
Enclose the first input end of linear power amplifier；
The outlet side of each switch base unit includes: ac output end, each secondary side tap of the multi-tap transformer
Pass through exchange gear selecting contactor KM respectivelynACiIt is connected to exchange output contactor KMnAC, then pass through exchange output contactor KMnAC
It is connected to ac output end；Exchange output reference end, the secondary side reference end of multi-tap transformer is connected to the exchange of switch unit
Export reference end；
The multiple switch base unit passes through exchange connection contactor KM respectively between any twon-(n-1)Connection.
9. a kind of linear power amplifier of multivoltage output according to claim 8, which is characterized in that the exchange is defeated
Outlet includes: first voltage output end, second voltage output end and tertiary voltage output end；
The alternating voltage of the first voltage output end output is 360V；
The alternating voltage of the second voltage output end output is 230V；
The alternating voltage of the tertiary voltage output end output is 180V.
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| CN201811026324.7A CN109245733A (en) | 2018-09-04 | 2018-09-04 | A kind of linear power amplifier of multivoltage output |
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