CN106533220B - A kind of feedback type limits the single phase bridge type rectifier circu of input current envelope - Google Patents
A kind of feedback type limits the single phase bridge type rectifier circu of input current envelope Download PDFInfo
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- CN106533220B CN106533220B CN201611127832.5A CN201611127832A CN106533220B CN 106533220 B CN106533220 B CN 106533220B CN 201611127832 A CN201611127832 A CN 201611127832A CN 106533220 B CN106533220 B CN 106533220B
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- 241000272470 Circus Species 0.000 title claims abstract description 38
- 230000011218 segmentation Effects 0.000 claims abstract description 45
- 230000005611 electricity Effects 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 9
- 238000004088 simulation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0038—Circuits or arrangements for suppressing, e.g. by masking incorrect turn-on or turn-off signals, e.g. due to current spikes in current mode control
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
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Abstract
A kind of feedback type limits the single phase bridge type rectifier circu of input current envelope, including positive-negative-positive BJT pipes Q1, positive-negative-positive BJT pipes Q2, input capacitance C1, output capacitance C2, diode D1, diode D2 and DC voltage control DC current source VCCS1, DC voltage control DC current source VCCS1 limits the envelope iac_en of input current iac in the input voltage range of permission, that is the increment of virtual value Vac of the increment of the envelope peak iac_enp of input current iac less than input voltage vac, the increment for further including the envelope peak iac_enp of input current iac are negative.The present invention is realized by the characteristic of segmentation access type load in the way of rear feed effectively inhibits the envelope increment of input current in wide input voltage range, promotes the safety and reliability of single phase bridge type rectifier circu.
Description
Technical field
The present invention relates to rectification (AC-DC) circuits, applied to exchange input, the transformation of electrical energy occasion of direct current output, especially
It is a kind of single phase bridge type rectifier circu with input current envelope limitation function, is suitble to segmentation access type load system, is applicable in
Segmentation access type load in son load may include the constant-pressure types such as LED, voltage-stabiliser tube load.
Background technology
Single-phase bridge rectification (AC-DC) circuit is a kind of circuit that AC energy can be converted into direct current energy, using ten
Divide extensive.But there is quite a few not have the limitation of input current envelope in single phase bridge type rectifier circu common at present
Function.(see Fig. 1) by taking a common single phase bridge type rectifier circu as an example, which is managed by positive-negative-positive BJT
Q1, positive-negative-positive BJT pipes Q2, input capacitance C1, output capacitance C2, diode D1, diode D2 and resistance R1 compositions, positive-negative-positive BJT
The emitter of pipe Q1 is connected with one end of the anode of alternating-current voltage source vac, the cathode of diode D1 and capacitance C1 simultaneously, PNP
The base stage of type BJT pipes Q1 is connected with one end of the base stage of positive-negative-positive BJT pipes Q2 and resistance R1 simultaneously, the current collection of positive-negative-positive BJT pipes Q1
One end that pole loads Z1 with the collector of positive-negative-positive BJT pipes Q2, one end of capacitance C2 and segmentation access type simultaneously is connected, capacitance
The other end of C2 loads the other end and two of the other end of Z1, the anode of diode D1, resistance R1 with segmentation access type simultaneously
The anode of pole pipe D2 is connected, the cathode of diode D2 simultaneously with the negative terminal of alternating-current voltage source vac, the other end of capacitance C1 and
The emitter of positive-negative-positive BJT pipes Q2 is connected.
The segmentation access type load Z1 is made of sub- load Z11 to sub- load Z1n and switch S1 to switch Sn, and son is negative
The one end for carrying Z11 constitutes one end of segmentation access type load Z1, the other end of sub- load Z11 simultaneously with one end of switch S1 and
Son load Z12 one end be connected, and so on until son load Z1n the other end be connected with one end of switch Sn, switch Sn's
The other end of the other end to switch S1 collectively form the other end of segmentation access type load Z1, are led when switch S1 is to switch Sn differences
Logical, sub- load Z11 to sub- load Z1n is sequentially ingressed into the common single phase bridge type rectifier circu by switch S1 to switch Sn
In, or son load Z1n to sub- load Z11 by switch Sn extremely switch S1 successively from the common single phase bridge type rectifier circu
In pick out, n is integer more than or equal to 1.
Assuming that the range Vac_min to Vac_max of the voltage effective value Vac of alternating-current voltage source vac is wide scope, work as electricity
When appearance C1 is sufficiently small, if the DC current gain β 1 of Q1 is equal to the DC current gain β 2 of Q2 and ignores the transmitting of Q1 and Q2
The envelope iac_en of pole-base-on voltage, input current iac meetsIn Vac=
In the case of Vac_min, the envelope peak of input current iacIn Vac=Vac_max
In the case of, the envelope peak of input current iacIt can be seen that working as alternating-current voltage source
The voltage effective value Vac of vac is changed to Vac_max from Vac_min, and the envelope peak iac_enp of input current iac cannot have
The inhibition of effect.That is the voltage effective value Vac of alternating-current voltage source vac is bigger, and the envelope peak iac_enp of input current iac is also got over
Greatly (see Fig. 2).For the rectification circuit of wide input voltage range, the envelope peak iac_enp of this input current iac is obtained not
Reliability and the safety of entire circuit will be threatened to the deficiency effectively inhibited.
Invention content
In order to overcome the envelope peak iac_enp of input current iac in existing single phase bridge type rectifier circu cannot be effective
The deficiency of inhibition, the present invention provide a kind of effective envelope peak iac_enp, rear feed simple in structure for inhibiting input current iac
Formula limits the single phase bridge type rectifier circu of input current envelope.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of feedback type limits the single phase bridge type rectifier circu of input current envelope, including positive-negative-positive BJT pipes Q1, positive-negative-positive
BJT pipes Q2, input capacitance C1, output capacitance C2, diode D1, diode D2 and DC voltage control DC current source VCCS1,
The emitter of positive-negative-positive BJT pipes Q1 while one end with the anode of alternating-current voltage source vac, the cathode of diode D1 and capacitance C1
It is connected, the base stage of positive-negative-positive BJT pipes Q1 while base stage and DC voltage control DC current source VCCS1 with positive-negative-positive BJT pipes Q2
Output end 2a be connected, the collector of positive-negative-positive BJT pipes Q1 simultaneously with one end of the collector of positive-negative-positive BJT pipes Q2, capacitance C2 with
And one end of segmentation access type load Z1 is connected, the other end of capacitance C2 loads the other end of Z1, two with segmentation access type simultaneously
The output end 2b of the anode of pole pipe D1, the anode of diode D2 and DC voltage control DC current source VCCS1 is connected, two poles
The cathode of pipe D2 while the emitter phase with the negative terminal of alternating-current voltage source vac, the other end of capacitance C1 and positive-negative-positive BJT pipes Q2
Even；
The segmentation access type load Z1 is made of sub- load Z11 to sub- load Z1n and switch S1 to switch Sn, and son is negative
The one end for carrying Z11 constitutes one end of segmentation access type load Z1, the other end of sub- load Z11 simultaneously with one end of switch S1 and
Son load Z12 one end be connected, and so on until son load Z1n the other end be connected with one end of switch Sn, switch Sn's
The other end of the other end to switch S1 collectively form the other end of segmentation access type load Z1, are led when switch S1 is to switch Sn differences
Logical, sub- load Z11 to sub- load Z1n is sequentially ingressed by switch S1 to switch Sn in the single phase bridge type rectifier circu, or
Son load Z1n to sub- load Z11 is picked out from the single phase bridge type rectifier circu successively by switch Sn to switch S1, and n is big
In the integer equal to 1；
The input terminal 1a of the DC voltage control DC current source VCCS1 is loaded with the son in segmentation access type load Z1
One end of Z1j is connected, and the value of j is 1≤j≤n, the input terminal 1b and diode of DC voltage control DC current source VCCS1
The anode of D1 is connected；The input that the DC voltage control DC current source VCCS1 allows in the single phase bridge type rectifier circu
The envelope iac_en of input current iac is limited in voltage range, i.e. the increment of the envelope peak iac_enp of input current iac is small
Further include the increment of the envelope peak iac_enp of input current iac it is negative in the increment of the virtual value Vac of input voltage vac
Number；If input capacitance C1 is sufficiently small and the DC current gain β 1 of positive-negative-positive BJT pipes Q1 is equal to the direct current of positive-negative-positive BJT pipes Q2
Flow enhancement β 2, then | iac |≤| iac_en | ≈ β 1f1 (u1), f1 (u1) they are to flow into DC voltage control DC current source
The electric current of VCCS1 output ends 2a, u1 are DC voltage control DC current source VCCS1 input terminals 1a to DC voltage control direct current
The voltage of current source VCCS1 input terminals 1b, and u1=vj, vj are to be segmented access type to load one end of Z1 neutrons loads Z1j extremely
It is segmented the voltage of the access type load Z1 other ends.
Further, the DC voltage control DC current source VCCS1 meets：When the segmentation access type loads in Z1
When son load Z11 to sub- load Z1j-1 is constant-pressure type load, Vc is son when either switch is connected in switch Sj-1 to switch Sn
The total voltage drop for loading Z11 to sub- load Z1j-1,In the case of,
U1p is the peak value of u1, and vjp is the peak value of vj,Coefficient A1 and B1 is big
In 0.
If A1<The increment of B1 and Vac are more than zero, then the peak value increment of f1 (u1) is negative, the increment of iac_enp is also
Negative.
Further, a kind of preferred embodiment about DC voltage control DC current source VCCS1, the direct current are voltage-controlled
DC current source VCCS1 processed includes diode Da1, resistance Ra1, resistance Ra2, resistance Ra3, resistance Ra4, resistance Ra5, capacitance
The anode of Ca1, NPN type BJT pipes Qa1 and NPN type BJT pipe Qa2, diode Da1 constitute DC voltage control DC current source
The cathode of the input terminal 1a of VCCS1, diode Da1 are connected with one end of resistance Ra5, the other end of resistance Ra5 while and capacitance
One end of Ca1 and one end of resistance Ra4 are connected, and the other end of capacitance Ca1 constitutes DC voltage control DC current source VCCS1
Input terminal 1b, the other end of resistance Ra4 is connected with the base stage of NPN type BJT pipes Qa2, and the collector of NPN type BJT pipes Qa2 is simultaneously
It is connected with the base stage of NPN type BJT pipes Qa1, one end of resistance Ra2 and one end of resistance Ra3, the other end of resistance Ra2 and friendship
The anode of galvanic electricity potential source vac is connected, and the other end of resistance Ra3 is connected with the negative terminal of alternating-current voltage source vac, NPN type BJT pipes Qa1
Collector constitute the output end 2a of DC voltage control DC current source VCCS1, the emitter and resistance of NPN type BJT pipes Qa1
One end of Ra1 is connected, and the other end of resistance Ra1 collectively forms DC voltage control direct current with the emitter of NPN type BJT pipes Qa2
The output end 2b of current source VCCS1.
The forward conduction voltage drop for ignoring Da1 ignores the base-emitter conduction voltage drop of Qa1 and Qa2, it is assumed that β a2 are Qa2
DC current gain, Ca1 is sufficiently large, Qa1 DC current gain β a1 are also sufficiently large, Ra2=Ra3 and Ra5<<Ra4.WhenAndWhen, it derives：
WhenWhen,
Take coefficient
WhenWhen, f1 (u1) ≈ 0；
When the increment of β a2Ra2 ＞ Ra4 and Vac are more than zero, takeThe then peak of f1 (u1)
Value increment is negative.
Further, another preferred embodiment about DC voltage control DC current source VCCS1, the DC voltage
Control DC current source VCCS1 includes more voltage-multiplying circuits, diode Db6, resistance Rb1, resistance Rb2, the resistance of three ports
The port c of Rb3, resistance Rb4 and positive-negative-positive BJT pipes Qb1, more voltage-multiplying circuits constitute the DC voltage control DC current source
The input terminal 1a of VCCS1, the port d of more voltage-multiplying circuits constitute the input terminal of the DC voltage control DC current source VCCS1
The port e of 1b, more voltage-multiplying circuits are connected with the anode of diode Db6, and the cathode of diode Db6 is connected with one end of resistance Rb4,
The other end of resistance Rb4 is connected with the base stage of one end of resistance Rb3 and positive-negative-positive BJT pipes Qb1 simultaneously, positive-negative-positive BJT pipes Qb1's
Emitter is connected with one end of resistance Rb1, and the other end of resistance Rb1 constitutes the defeated of DC voltage control DC current source VCCS1
The collector of outlet 2a, positive-negative-positive BJT pipes Qb1 are connected with one end of resistance Rb2, and the other end of resistance Rb2 is another with resistance Rb3's
One end collectively forms the output end 2b of DC voltage control DC current source VCCS1.
The voltage of more voltage-multiplying circuit port e to more voltage-multiplying circuit port d be more voltage-multiplying circuit port c extremely
K times of the voltage peak of more voltage-multiplying circuit port d, k>1.
Ignore emitter-base stage conduction voltage drop of Qb1 and the forward conduction voltage drop of diode Db6, it is assumed that the direct current of Qb1
Currentgainβ b1 is sufficiently large, in DC voltage control DC current source VCCS1 output ends 2a to DC voltage control DC current
The voltage u2 ≈ of source VCCS1 output ends 2b | vac |, Rb2<<Rb1、βb1·Rb1>>(Rb3//Rb4)、AndIn the case of derive：
WhenWhen,
Take coefficient
WhenWhen, f1 (u1) ≈ 0.
When the increment of Rb4 ＜ (k-1) Rb3 and Vac are more than zero, takeThen f1 (u1)
Peak value increment is negative.
More voltage-multiplying circuits are voltage triplers, k ≈ 3, more voltage-multiplying circuits by diode Db1, diode Db2,
Diode Db3, diode Db4, diode Db5, capacitance Cb1, capacitance Cb2, capacitance Cb3, capacitance Cb4 and capacitance Cb5 compositions, two
The anode of pole pipe Db1 and one end of capacitance Cb2 and one end of capacitance Cb4 collectively form the port c of more voltage-multiplying circuits, and two
The cathode of pole pipe Db1 is connected with one end of the anode of diode Db2 and capacitance Cb1 simultaneously, the other end and capacitance of capacitance Cb1
One end of Cb3 and one end of capacitance Cb5 collectively form the port d of more voltage-multiplying circuits, the cathode of diode Db2 simultaneously with
The other end of capacitance Cb2 and the anode of diode Db3 are connected, the cathode of diode Db3 simultaneously with the other end of capacitance Cb3 with
And the anode of diode Db4 is connected, the cathode of diode Db4 simultaneously with the other end of capacitance Cb4 and the anode of diode Db5
It is connected, the cathode of diode Db5 collectively forms the port e of more voltage-multiplying circuits with the other end of capacitance Cb5.
As f1 (u1)>When switch S1 Zhi switch Sn in 0 but segmentation access type load Z1 is turned off, input current iac's
Waveform can have apparent notch, which can cause larger harmonic component, not only reduce the PF values of circuit but also increase
The THD values of circuit.
The basis for limiting the single phase bridge type rectifier circu of input current envelope in order to compensate for the notch, the formula that can present in the rear
It is upper to increase a current harmonics compensation branch.The port a of the current harmonics compensation branch and the one of segmentation access type load Z1
End is connected, and the port b of the current harmonics compensation branch is connected with the other end of segmentation access type load Z1, as f1 (u1)>0 and
When switch S1 Zhi switch Sn in segmentation access type load Z1 is turned off, the current harmonics compensation branch work is humorous from electric current
Wave compensates the electric current i2 that tributary port a is flowed into>0, if C2 is sufficiently small, the absolute value of input current iac at this time | iac | ≈ i2；When
When either switch in switch S1 to switch Sn is connected, the current harmonics compensation branch does not work, inflow current harmonic compensation
The electric current i2 ≈ 0 of tributary port a.
A kind of preferred embodiment of branch, the current harmonics compensation branch routing resistance Rc1, resistance are compensated about current harmonics
Rc2, resistance Rc3, resistance Rc4, resistance Rc5, capacitance Cc1, NPN type BJT pipes Qc1 and NPN type BJT pipes Qc2 compositions, resistance Rc4
One end of one end and resistance Rc5 collectively form the port a of the current harmonics compensation branch, the other end and NPN of resistance Rc4
The base stage of type BJT pipes Qc2 and the collector of NPN type BJT pipes Qc1 are connected, the other end and the NPN type BJT pipes Qc2 of resistance Rc5
Collector be connected, the emitter of NPN type BJT pipes Qc2 and the emitter of NPN type BJT pipes Qc1, one end of capacitance Cc1 and electricity
One end of resistance Rc3 collectively forms the port b of the current harmonics compensation branch, the base stage of NPN type BJT pipes Qc1 while and capacitance
The other end of Cc1, the other end of resistance Rc3, one end of resistance Rc1 and resistance Rc2 one end be connected, resistance Rc1's is another
End is connected with the anode of alternating-current voltage source vac, and the other end of resistance Rc2 is connected with the negative terminal of alternating-current voltage source vac.
Assuming that Rc1=Rc2 and VBEc1 is the base-emitter conduction voltage drop of Qc1, whenWhen, Qc1 conductings, Qc2 cut-offs flow into the electricity of the current harmonics compensation tributary port a
Flow i2 ≈ 0；WhenWhen, Qc1 cut-offs, Qc2 conductings, if f1 (u1)>0, then flow into the electricity
Flow the electric current i2 of harmonic compensation tributary port a>0.
The present invention technical concept be：A kind of DC voltage control DC current source VCCS1 is constructed, existing single-phase bridge is replaced
Resistance R1 in formula rectification circuit is realized in the way of rear feed by the characteristic of segmentation access type load in wide input voltage model
The envelope increment that input current is effectively inhibited in enclosing, promotes the safety and reliability of single phase bridge type rectifier circu.In addition, being
The waveform gap problem of input current iac is solved, proposes a kind of scheme increasing current harmonics compensation branch.
Beneficial effects of the present invention are mainly manifested in：Feedback type limits the single phase bridge type rectifier circu tool of input current envelope
There is the ability for limiting input current maximum value, the application scenario of wide input voltage range is very suitable for, as its core component
DC voltage control DC current source is simple in structure, scalability is strong.
Description of the drawings
Fig. 1 is a kind of circuit diagram of existing single phase bridge type rectifier circu.
Fig. 2 is the simulation waveform of single phase bridge type rectifier circu shown in Fig. 1.
Fig. 3 is the circuit diagram of the present invention.
Fig. 4 is circuit diagram of the embodiment of the present invention 1 about DC voltage control DC current source VCCS1.
Fig. 5 is the simulation waveform of the embodiment of the present invention 1.
Fig. 6 is circuit diagram of the embodiment of the present invention 2 about DC voltage control DC current source VCCS1.
Fig. 7 is the simulation waveform of the embodiment of the present invention 2.
Fig. 8 is the circuit diagram that the present invention includes current harmonics compensation branch.
Fig. 9 is the circuit diagram that the embodiment of the present invention 3 compensates branch about current harmonics.
Figure 10 is the simulation waveform of the embodiment of the present invention 4.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
With reference to Fig. 3~Figure 10, a kind of feedback type limits the single phase bridge type rectifier circu of input current envelope, including positive-negative-positive
BJT pipes Q1, positive-negative-positive BJT pipes Q2, input capacitance C1, output capacitance C2, diode D1, diode D2 and DC voltage control are straight
Flow current source VCCS1, the emitter of positive-negative-positive BJT pipes Q1 simultaneously with the cathode of the anode of alternating-current voltage source vac, diode D1 with
And one end of capacitance C1 is connected, the base stage of positive-negative-positive BJT pipes Q1 is straight with the base stage and DC voltage control of positive-negative-positive BJT pipes Q2 simultaneously
The output end 2a for flowing current source VCCS1 is connected, the collector of positive-negative-positive BJT pipes Q1 while collector, electricity with positive-negative-positive BJT pipes Q2
One end of one end and segmentation access type load Z1 for holding C2 is connected, and the other end of capacitance C2 loads Z1 with segmentation access type simultaneously
The other end, the anode of diode D1, the anode of diode D2 and DC voltage control DC current source VCCS1 output end
2b is connected, the cathode of diode D2 simultaneously with the negative terminal of alternating-current voltage source vac, the other end of capacitance C1 and positive-negative-positive BJT pipes Q2
Emitter be connected；
The segmentation access type load Z1 is made of sub- load Z11 to sub- load Z1n and switch S1 to switch Sn, and son is negative
The one end for carrying Z11 constitutes one end of segmentation access type load Z1, the other end of sub- load Z11 simultaneously with one end of switch S1 and
Son load Z12 one end be connected, and so on until son load Z1n the other end be connected with one end of switch Sn, switch Sn's
The other end of the other end to switch S1 collectively form the other end of segmentation access type load Z1, are led when switch S1 is to switch Sn differences
Logical, sub- load Z11 to sub- load Z1n is sequentially ingressed by switch S1 to switch Sn in the single phase bridge type rectifier circu, or
Son load Z1n to sub- load Z11 is picked out from the single phase bridge type rectifier circu successively by switch Sn to switch S1, and n is big
In the integer equal to 1；
The input terminal 1a of the DC voltage control DC current source VCCS1 is loaded with the son in segmentation access type load Z1
One end of Z1j is connected, and the value of j is 1≤j≤n, the input terminal 1b and diode of DC voltage control DC current source VCCS1
The anode of D1 is connected；
The input voltage model that the DC voltage control DC current source VCCS1 allows in the single phase bridge type rectifier circu
The envelope iac_en of interior restriction input current iac is enclosed, i.e. the increment of the envelope peak iac_enp of input current iac is less than input
The increment of the virtual value Vac of voltage vac, the increment for further including the envelope peak iac_enp of input current iac are negative.If defeated
Enter that capacitance C1 is sufficiently small and the DC current gain β 1 of positive-negative-positive BJT pipes Q1 is equal to the DC current gain β of positive-negative-positive BJT pipes Q2
2, then | iac |≤| iac_en | ≈ β 1f1 (u1), f1 (u1) they are to flow into DC voltage control DC current source VCCS1 output ends
The electric current of 2a, u1 are DC voltage control DC current source VCCS1 input terminals 1a to DC voltage control DC current source VCCS1
The voltage of input terminal 1b, and one end that u1=vj, vj are segmentation access type load Z1 neutrons loads Z1j is negative to segmentation access type
Carry the voltage of the Z1 other ends.
Further, the DC voltage control DC current source VCCS1 meets：When the segmentation access type loads in Z1
When son load Z11 to sub- load Z1j-1 is constant-pressure type load, Vc is son when either switch is connected in switch Sj-1 to switch Sn
The total voltage drop for loading Z11 to sub- load Z1j-1,In the case of,u1p
For the peak value of u1, vjp is the peak value of vj,Coefficient A1 and B1 are all higher than
0。
If A1<The increment of B1 and Vac are more than zero, then the peak value increment of f1 (u1) is negative, the increment of iac_enp is also
Negative.
Embodiment 1：Include with reference to Fig. 3 and Fig. 4, the DC voltage control DC current source VCCS1 of the embodiment of the present invention 1
Diode Da1, resistance Ra1, resistance Ra2, resistance Ra3, resistance Ra4, resistance Ra5, capacitance Ca1, NPN type BJT pipes Qa1 and NPN
The anode of type BJT pipe Qa2, diode Da1 constitute the input terminal 1a, diode Da1 of DC voltage control DC current source VCCS1
Cathode be connected with one end of resistance Ra5, the other end of resistance Ra5 simultaneously with one end of capacitance Ca1 and one end of resistance Ra4
It is connected, the other end of capacitance Ca1 constitutes the input terminal 1b of DC voltage control DC current source VCCS1, the other end of resistance Ra4
It is connected with the base stage of NPN type BJT pipes Qa2, the collector of NPN type BJT pipes Qa2 while the base stage with NPN type BJT pipes Qa1, resistance
One end of Ra2 and one end of resistance Ra3 are connected, and the other end of resistance Ra2 is connected with the anode of alternating-current voltage source vac, resistance
The other end of Ra3 is connected with the negative terminal of alternating-current voltage source vac, and the collector composition DC voltage control of NPN type BJT pipes Qa1 is straight
The output end 2a of current source VCCS1 is flowed, the emitter of NPN type BJT pipes Qa1 is connected with one end of resistance Ra1, and resistance Ra1's is another
The emitter of one end and NPN type BJT pipes Qa2 collectively form the output end 2b of DC voltage control DC current source VCCS1.
The forward conduction voltage drop for ignoring Da1 ignores the base-emitter conduction voltage drop of Qa1 and Qa2, it is assumed that Ca1 is enough
Greatly, the DC current gain β a1 of Qa1 are also sufficiently large, Ra2=Ra3 and Ra5<<Ra4.WhenAndWhen, it derives：
WhenWhen,
Take coefficient
WhenWhen, f1 (u1) ≈ 0.
When the increment of β a2Ra2 ＞ Ra4 and Vac are more than zero, takeThe then peak of f1 (u1)
Value increment is negative.
Fig. 5 is the input current iac and its envelope for being segmented embodiment 1 when access type load Z1 is three sections of access type LED strings
Absolute value | iac_en | simulation waveform.As shown in Figure 5, β a2Ra2 ＞ Ra4, when Vac increases, the packet of input current are enabled
The increment of network peak value iac_enp is negative.
Embodiment 2：Include with reference to Fig. 3 and Fig. 6, the DC voltage control DC current source VCCS1 of the embodiment of the present invention 2
More voltage-multiplying circuits, diode Db6, resistance Rb1, resistance Rb2, resistance Rb3, resistance Rb4 and the positive-negative-positive BJT pipes of one three port
Qb1, the port c of more voltage-multiplying circuits constitute the input terminal 1a of the DC voltage control DC current source VCCS1, more voltage-multiplying circuits
Port d constitute the input terminal 1b of the DC voltage control DC current source VCCS1, the port e of more voltage-multiplying circuits and two poles
The anode of pipe Db6 is connected, and the cathode of diode Db6 is connected with one end of resistance Rb4, the other end of resistance Rb4 while and resistance
One end of Rb3 and the base stage of positive-negative-positive BJT pipes Qb1 are connected, one end phase of the emitter and resistance Rb1 of positive-negative-positive BJT pipes Qb1
Even, the other end of resistance Rb1 constitutes the output end 2a of DC voltage control DC current source VCCS1, the collection of positive-negative-positive BJT pipes Qb1
Electrode is connected with one end of resistance Rb2, and the other end of resistance Rb2 collectively forms DC voltage control with the other end of resistance Rb3
The output end 2b of DC current source VCCS1.
More voltage-multiplying circuits are voltage triplers, by diode Db1, diode Db2, diode Db3, diode Db4,
Diode Db5, capacitance Cb1, capacitance Cb2, capacitance Cb3, capacitance Cb4 and capacitance Cb5 compositions, the anode and capacitance of diode Db1
One end of Cb2 and one end of capacitance Cb4 collectively form the port c of more voltage-multiplying circuits, the cathode of diode Db1 simultaneously with
The anode of diode Db2 and one end of capacitance Cb1 are connected, the other end of capacitance Cb1 and one end of capacitance Cb3 and capacitance
One end of Cb5 collectively forms the port d of more voltage-multiplying circuits, the cathode of diode Db2 simultaneously with the other end of capacitance Cb2 with
And the anode of diode Db3 is connected, the cathode of diode Db3 simultaneously with the other end of capacitance Cb3 and the anode of diode Db4
It is connected, the cathode of diode Db4 is connected with the anode of the other end of capacitance Cb4 and diode Db5 simultaneously, diode Db5's
The other end of cathode and capacitance Cb5 collectively form the port e of more voltage-multiplying circuits, and more voltage-multiplying circuit port e are to described
The voltage of more voltage-multiplying circuit port d is ks of the more voltage-multiplying circuit port c to the voltage peak of more voltage-multiplying circuit port d
Times, k ≈ 3.
Ignore emitter-base stage conduction voltage drop of Qb1 and the forward conduction voltage drop of diode Db6, it is assumed that the direct current of Qb1
Currentgainβ b1 is sufficiently large, in DC voltage control DC current source VCCS1 output ends 2a to DC voltage control DC current
The voltage u2 ≈ of source VCCS1 output ends 2b | vac |, Rb2<<Rb1、βb1·Rb1>>(Rb3//Rb4)、And
AndIn the case of derive：
WhenWhen,
Take coefficient
WhenWhen, f1 (u1) ≈ 0.
When the increment of Rb4 ＜ (k-1) Rb3 and Vac are more than zero, takeThen f1 (u1)
Peak value increment is negative.
Fig. 7 is the input current iac and its envelope for being segmented embodiment 2 when access type load Z1 is three sections of access type LED strings
Absolute value | iac_en | simulation waveform.As shown in Figure 7, Rb4 ＜ (k-1) Rb3, when Vac increases, input current are enabled
The increment of envelope peak iac_enp is negative.
Embodiment 3：With reference to Fig. 3, Fig. 4, Fig. 8 and Fig. 9, increase a current harmonics compensation branch on the basis of embodiment 1
Road.One end that the port a of the current harmonics compensation branch loads Z1 with segmentation access type is connected, the current harmonics compensation branch
The other end that the port b on road loads Z1 with segmentation access type is connected, as f1 (u1)>Switch in 0 and segmentation access type load Z1
When S1 to switch Sn is turned off, the current harmonics compensation branch work, the electric current flowed into from current harmonics compensation tributary port a
i2>0, if C2 is sufficiently small, the absolute value of input current iac at this time | iac | ≈ i2；Either switch in switch S1 to switch Sn
When conducting, the current harmonics compensation branch does not work, the electric current i2 ≈ 0 of inflow current harmonic compensation tributary port a.
The current harmonics compensation branch routing resistance Rc1, resistance Rc2, resistance Rc3, resistance Rc4, resistance Rc5, capacitance
Cc1, NPN type BJT pipes Qc1 and NPN type BJT pipes Qc2 compositions, one end of resistance Rc4 collectively form described with one end of resistance Rc5
Current harmonics compensates the port a of branch, the other end of resistance Rc4 and the base stage of NPN type BJT pipes Qc2 and NPN type BJT pipes Qc1
Collector be connected, the other end of resistance Rc5 is connected with the collector of NPN type BJT pipes Qc2, the emitter of NPN type BJT pipes Qc2
The current harmonics is collectively formed with emitter, one end of capacitance Cc1 and one end of resistance Rc3 of NPN type BJT pipes Qc1 to mend
Repay the port b of branch, the base stage of NPN type BJT pipes Qc1 simultaneously with the other end of capacitance Cc1, the other end of resistance Rc3, resistance
One end of Rc1 and one end of resistance Rc2 are connected, and the other end of resistance Rc1 is connected with the anode of alternating-current voltage source vac, resistance
The other end of Rc2 is connected with the negative terminal of alternating-current voltage source vac.
Assuming that Rc1=Rc2 and VBEc1 is the base-emitter conduction voltage drop of Qc1, whenWhen, Qc1 conductings, Qc2 cut-offs flow into the electricity of the current harmonics compensation tributary port a
Flow i2 ≈ 0；WhenWhen, Qc1 cut-offs, Qc2 conductings, if f1 (u1)>0, then flow into the electricity
Flow the electric current i2 of harmonic compensation tributary port a>0.
Figure 10 is the input current iac and its envelope for being segmented embodiment 3 when access type load Z1 is three sections of access type LED strings
Absolute value | iac_en | simulation waveform.Fig. 5 of comparative example 1, by Figure 10 of embodiment 3 it is found that working as Vac=Vac_
When min, the current harmonics compensation branch that the waveform notch of the input current iac of embodiment 1 is carried out example 3 preferably compensates for.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
The concrete form for being not construed as being only limitted to embodiment and being stated of range, protection scope of the present invention is also and in this field skill
Art personnel according to present inventive concept it is conceivable that equivalent technologies mean.
Claims (10)
1. a kind of feedback type limits the single phase bridge type rectifier circu of input current envelope, it is characterised in that：The single-phase bridge is whole
Current circuit include positive-negative-positive BJT pipes Q1, positive-negative-positive BJT pipes Q2, input capacitance C1, output capacitance C2, diode D1, diode D2 and
The emitter of DC voltage control DC current source VCCS1, positive-negative-positive BJT pipes Q1 simultaneously with the anode of alternating-current voltage source vac, two
The cathode of pole pipe D1 and one end of capacitance C1 are connected, the base stage of positive-negative-positive BJT pipes Q1 simultaneously with the base stage of positive-negative-positive BJT pipes Q2 and
The output end 2a of DC voltage control DC current source VCCS1 is connected, the collector of positive-negative-positive BJT pipes Q1 simultaneously with positive-negative-positive BJT
One end of the collector of pipe Q2, one end of capacitance C2 and segmentation access type load Z1 is connected, the other end of capacitance C2 simultaneously with
It is segmented the access type load other end of Z1, the anode of diode D1, the anode of diode D2 and DC voltage control direct current
The output end 2b of stream source VCCS1 is connected, the cathode of diode D2 simultaneously with the negative terminal of alternating-current voltage source vac, capacitance C1 it is another
The emitter of end and positive-negative-positive BJT pipes Q2 are connected；
The segmentation access type load Z1 is made of sub- load Z11 to sub- load Z1n and switch S1 to switch Sn, sub- load
One end of Z11 constitutes one end of segmentation access type load Z1, the other end of sub- load Z11 while one end with switch S1 and son
Load Z12 one end be connected, and so on until son load Z1n the other end be connected with one end of switch Sn, switch Sn's is another
The other end of one end to switch S1 collectively form the other end of segmentation access type load Z1, are led when switch S1 is to switch Sn differences
Logical, sub- load Z11 to sub- load Z1n is sequentially ingressed by switch S1 to switch Sn in the single phase bridge type rectifier circu, or
Son load Z1n to sub- load Z11 is picked out from the single phase bridge type rectifier circu successively by switch Sn to switch S1, and n is big
In the integer equal to 1；
The input terminal 1a of the DC voltage control DC current source VCCS1 and son load Z1j in segmentation access type load Z1
One end be connected, the value of j is 1≤j≤n, the input terminal 1b's and diode D1 of DC voltage control DC current source VCCS1
Anode is connected；
The DC voltage control DC current source VCCS1 is in the input voltage range that the single phase bridge type rectifier circu allows
The envelope iac_en of input current iac is limited, i.e. the increment of the envelope peak iac_enp of input current iac is less than alternating voltage
The increment of the virtual value Vac of source vac, the increment for further including the envelope peak iac_enp of input current iac are negative.
2. a kind of feedback type as described in claim 1 limits the single phase bridge type rectifier circu of input current envelope, feature exists
In：F1 (u1) is the electric current for flowing into the DC voltage control DC current source VCCS1 output ends 2a, and u1 is DC voltage control
The voltage of DC current source VCCS1 input terminals 1a to DC voltage control DC current source VCCS1 input terminals 1b, vj are that segmentation connects
The one end for entering formula load Z1 neutrons loads Z1j loads the voltage of the Z1 other ends, u1=vj, when the segmentation connects to segmentation access type
When the son load Z11 to sub- load Z1j-1 for entering in formula load Z1 is constant-pressure type load, Vc is switch Sj-1 in switch Sn
The total voltage drop of son load Z11 to sub- load Z1j-1 when one switch conduction,In the case of,Coefficient A1 and B1 are all higher than 0.
3. a kind of feedback type as claimed in claim 2 limits the single phase bridge type rectifier circu of input current envelope, feature exists
In：If coefficient A1<The increment of B1 and Vac are more than zero, then the peak value increment of f1 (u1) is negative.
4. a kind of feedback type as claimed in claim 1 or 2 limits the single phase bridge type rectifier circu of input current envelope, feature
It is：The DC voltage control DC current source VCCS1 includes diode Da1, resistance Ra1, resistance Ra2, resistance Ra3, electricity
The anode for hindering Ra4, resistance Ra5, capacitance Ca1, NPN type BJT pipes Qa1 and NPN type BJT pipe Qa2, diode Da1 constitutes direct current
The input terminal 1a of voltage-controlled DC current source VCCS1 processed, the cathode of diode Da1 are connected with one end of resistance Ra5, resistance Ra5's
The other end is connected with one end of one end of capacitance Ca1 and resistance Ra4 simultaneously, and the other end composition direct current of capacitance Ca1 is voltage-controlled
The other end of the input terminal 1b of DC current source VCCS1 processed, resistance Ra4 are connected with the base stage of NPN type BJT pipes Qa2, NPN type BJT
The collector of pipe Qa2 is connected with the base stage of NPN type BJT pipes Qa1, one end of resistance Ra2 and one end of resistance Ra3 simultaneously, electricity
The other end of resistance Ra2 is connected with the anode of alternating-current voltage source vac, the other end of resistance Ra3 and the negative terminal phase of alternating-current voltage source vac
Even, the collector of NPN type BJT pipes Qa1 constitutes the output end 2a of DC voltage control DC current source VCCS1, NPN type BJT pipes
The emitter of Qa1 is connected with one end of resistance Ra1, and the emitter of the other end and NPN type BJT pipes Qa2 of resistance Ra1 collectively forms
The output end 2b of DC voltage control DC current source VCCS1.
5. a kind of feedback type as claimed in claim 4 limits the single phase bridge type rectifier circu of input current envelope, feature exists
In：F1 (u1) is the electric current for flowing into the DC voltage control DC current source VCCS1 output ends 2a, and u1 is DC voltage control
The voltage of DC current source VCCS1 input terminals 1a to DC voltage control DC current source VCCS1 input terminals 1b, β a2 are NPN type
The DC current gain of BJT pipes Qa2, when the son load Z11 to sub- load Z1j-1 in the segmentation access type load Z1 is perseverance
When die mould loads, Vc is the total voltage that son loads Z11 to sub- load Z1j-1 when either switch is connected in switch Sj-1 to switch Sn
Drop, whenWhen the increment of Ra2=Ra3, β a2Ra2 ＞ Ra4 and Vac are more than zero, the peak value of f1 (u1) increases
Amount is negative.
6. a kind of feedback type as claimed in claim 1 or 2 limits the single phase bridge type rectifier circu of input current envelope, feature
It is：The DC voltage control DC current source VCCS1 includes the more voltage-multiplying circuits, diode Db6, resistance of three ports
The port c of Rb1, resistance Rb2, resistance Rb3, resistance Rb4 and positive-negative-positive BJT pipes Qb1, more voltage-multiplying circuits constitute the DC voltage
The input terminal 1a of DC current source VCCS1 is controlled, the port d of more voltage-multiplying circuits constitutes the DC voltage control DC current source
The input terminal 1b of VCCS1, the port e of more voltage-multiplying circuits are connected with the anode of diode Db6, the cathode and resistance of diode Db6
One end of Rb4 is connected, and the other end of resistance Rb4 is connected with the base stage of one end of resistance Rb3 and positive-negative-positive BJT pipes Qb1 simultaneously,
The emitter of positive-negative-positive BJT pipes Qb1 is connected with one end of resistance Rb1, and the other end of resistance Rb1 constitutes DC voltage control direct current
The collector of the output end 2a of current source VCCS1, positive-negative-positive BJT pipes Qb1 are connected with one end of resistance Rb2, and resistance Rb2's is another
The other end of end and resistance Rb3 collectively form the output end 2b of DC voltage control DC current source VCCS1；
The voltage of more voltage-multiplying circuit port e to more voltage-multiplying circuit port d is more voltage-multiplying circuit port c to described
K times of the voltage peak of more voltage-multiplying circuit port d, k>1.
7. a kind of feedback type as claimed in claim 6 limits the single phase bridge type rectifier circu of input current envelope, feature exists
In：F1 (u1) is the electric current for flowing into the DC voltage control DC current source VCCS1 output ends 2a, and u1 is DC voltage control
The voltage of DC current source VCCS1 input terminals 1a to DC voltage control DC current source VCCS1 input terminals 1b, when the segmentation
When son load Z11 to sub- load Z1j-1 in access type load Z1 is constant-pressure type load, Vc is in switch Sj-1 to switch Sn
The total voltage drop of son load Z11 to sub- load Z1j-1 when either switch is connected, whenRb4 ＜ (k-1) Rb3
And the increment of Vac, when being more than zero, the peak value increment of f1 (u1) is negative.
8. a kind of feedback type as claimed in claim 6 limits the single phase bridge type rectifier circu of input current envelope, feature exists
In：More voltage-multiplying circuits are voltage triplers, and k ≈ 3, more voltage-multiplying circuits are by diode Db1, diode Db2, diode
Db3, diode Db4, diode Db5, capacitance Cb1, capacitance Cb2, capacitance Cb3, capacitance Cb4 and capacitance Cb5 compositions, diode
One end of the anode of Db1 and one end of capacitance Cb2 and capacitance Cb4 collectively forms the port c of more voltage-multiplying circuits, diode
The cathode of Db1 is connected with one end of the anode of diode Db2 and capacitance Cb1 simultaneously, the other end and the capacitance Cb3 of capacitance Cb1
One end and one end of capacitance Cb5 collectively form the port d of more voltage-multiplying circuits, the cathode of diode Db2 simultaneously with electricity
The anode of the other end and diode Db3 that hold Cb2 is connected, the cathode of diode Db3 simultaneously with the other end of capacitance Cb3 and
The anode of diode Db4 is connected, the cathode of diode Db4 simultaneously with the other end of capacitance Cb4 and the anode phase of diode Db5
Even, the cathode of diode Db5 collectively forms the port e of more voltage-multiplying circuits with the other end of capacitance Cb5.
9. a kind of feedback type as claimed in claim 1 or 2 limits the single phase bridge type rectifier circu of input current envelope, feature
It is：The single phase bridge type rectifier circu that the feedback type limits input current envelope further includes a current harmonics compensation branch,
One end that the port a of the current harmonics compensation branch loads Z1 with segmentation access type is connected, and the current harmonics compensates branch
Port b with segmentation access type load Z1 the other end be connected,
F1 (u1) is the electric current for flowing into DC voltage control DC current source VCCS1 output ends 2a, and u1 is that DC voltage control is straight
The voltage for flowing current source VCCS1 input terminals 1a to DC voltage control DC current source VCCS1 input terminals 1b, as f1 (u1)>0 and
When switch S1 Zhi switch Sn in segmentation access type load Z1 is turned off, the current harmonics compensation branch work is humorous from electric current
Wave compensates the electric current i2 that tributary port a is flowed into>0, if C2 is sufficiently small, the absolute value of input current iac at this time | iac | ≈ i2；When
When either switch in switch S1 to switch Sn is connected, the current harmonics compensation branch does not work, inflow current harmonic compensation
The electric current i2 ≈ 0 of tributary port a.
10. a kind of feedback type as claimed in claim 9 limits the single phase bridge type rectifier circu of input current envelope, feature exists
In：The current harmonics compensation branch routing resistance Rc1, resistance Rc2, resistance Rc3, resistance Rc4, resistance Rc5, capacitance Cc1, NPN
It is humorous that type BJT pipes Qc1 and NPN type BJT pipes Qc2 compositions, one end of resistance Rc4 and one end of resistance Rc5 collectively form the electric current
Wave compensates the port a of branch, the other end of resistance Rc4 and the base stage of NPN type BJT pipes Qc2 and the current collection of NPN type BJT pipes Qc1
Extremely it is connected, the other end of resistance Rc5 is connected with the collector of NPN type BJT pipes Qc2, the emitter and NPN of NPN type BJT pipes Qc2
Emitter, one end of capacitance Cc1 and one end of resistance Rc3 of type BJT pipes Qc1 collectively forms the current harmonics compensation branch
Port b, the base stage of NPN type BJT pipes Qc1 simultaneously with the other end of capacitance Cc1, the other end of resistance Rc3, resistance Rc1 one
End and one end of resistance Rc2 are connected, and the other end of resistance Rc1 is connected with the anode of alternating-current voltage source vac, and resistance Rc2's is another
One end is connected with the negative terminal of alternating-current voltage source vac.
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