CN106533220A - Single-phase bridge type rectifying circuit for limiting input current envelope in feedback way - Google Patents
Single-phase bridge type rectifying circuit for limiting input current envelope in feedback way Download PDFInfo
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- CN106533220A CN106533220A CN201611127832.5A CN201611127832A CN106533220A CN 106533220 A CN106533220 A CN 106533220A CN 201611127832 A CN201611127832 A CN 201611127832A CN 106533220 A CN106533220 A CN 106533220A
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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
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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
- 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
Disclosed is a single-phase bridge type rectifying circuit for limiting input current envelope in a feedback way. The single-phase bridge type rectifying circuit comprises a PNP type BJT tube Q1, a PNP type BJT tube Q2, an input capacitor C1, an output capacitor C2, a diode D1, a diode D2 and a direct current voltage control direct current source VCCS1, wherein the direct current voltage control direct current source VCCS1 limits the envelope iac-en of the input current iac within an allowable input voltage range, namely, the increment of an envelope peak iac-enp of the input current iac is less than that of an effective value Vac of an input voltage vac; and the increment of the envelope peak iac-enp of the input current iac is a negative number. According to the single-phase bridge type rectifying circuit, the envelope increment of the input current is effectively suppressed within a wide input voltage range through the feedback way based on the characteristic of a segment access type load, so that the safety and the reliability of the single-phase bridge type rectifying circuit are improved.
Description
Technical field
The present invention relates to rectification (AC-DC) circuit, is 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 adapted to segmentation access type load system, is suitable for
Segmentation access type load in son load may include the constant-pressure types such as LED, stabilivolt 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, applies ten
Divide extensive.But, in single phase bridge type rectifier circu common at present, have quite a few not possess the restriction of input current envelope
Function.By taking a common single phase bridge type rectifier circu as an example (see Fig. 1), the single phase bridge type rectifier circu is managed by positive-negative-positive BJT
Q1, positive-negative-positive BJT pipe Q2, input capacitance C1, output capacitance C2, diode D1, diode D2 and resistance R1 composition, positive-negative-positive BJT
The emitter stage of pipe Q1 is connected with one end of the anode, the negative electrode of diode D1 and electric capacity C1 of alternating-current voltage source vac simultaneously, PNP
The base stage of type BJT pipe Q1 is connected with one end of the base stage and resistance R1 of positive-negative-positive BJT pipe Q2 simultaneously, the current collection of positive-negative-positive BJT pipe Q1
One end of pole colelctor electrode, one end of electric capacity C2 and segmentation access type load Z1 simultaneously with positive-negative-positive BJT pipe Q2 is connected, electric capacity
The other end of the C2 other end simultaneously with segmentation access type load Z1, the anode of diode D1, the other end of resistance R1 and two
The anode of pole pipe D2 is connected, the negative electrode of diode D2 negative terminal simultaneously with alternating-current voltage source vac, the other end of electric capacity C1 and
The emitter stage of positive-negative-positive BJT pipe Q2 is connected.
The segmentation access type load Z1 is made up of to Sn is switched sub- load Z11 to sub- load Z1n and switch S1, and son is negative
The one end for carrying Z11 constitutes one end that segmentation access type loads Z1, the other end of sub- load Z11 simultaneously with one end of switch S1 and
One end of son load Z12 is connected, the like until the other end of son load Z1n is connected with one end of switch Sn, switch Sn
The other end collectively forms the other end that segmentation access type loads Z1 to the other end of switch S1, and switch S1 to switch Sn is led when different
Logical, sub- load Z11 to sub- load Z1n is sequentially ingressed into the common single phase bridge type rectifier circu to Sn is switched by switching S1
In, or sub- load Z1n to sub- load Z11 is by switching Sn to switch S1 successively from the common single phase bridge type rectifier circu
In pick out, n is the integer more than or equal to 1.
Assume that the scope 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 DC current gain β of Q1 1 is equal to DC current gain β 2 of Q2 and ignores the transmitting of Q1 and Q2
Pole-base-on voltage, the envelope iac_en of input current iac meetIn 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 iacAs can be seen here, work as alternating-current voltage source
The voltage effective value Vac of vac is changed to Vac_max from Vac_min, and envelope peak iac_enp of input current iac cannot have
The suppression of effect.That is the voltage effective value Vac of alternating-current voltage source vac is bigger, and 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, envelope peak iac_enp of this input current iac is obtained not
Reliability and the safety of whole circuit will be threatened to effective deficiency for suppressing.
The content of the invention
In order to envelope peak iac_enp for overcoming input current iac in existing single phase bridge type rectifier circu cannot be effective
The deficiency of suppression, the present invention provide a kind of envelope peak iac_enp of effective suppression input current iac, the rear feed of simple structure
Formula limits the single phase bridge type rectifier circu of input current envelope.
The technical solution adopted for 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 pipe Q1, positive-negative-positive
BJT pipe Q2, input capacitance C1, output capacitance C2, diode D1, diode D2 and DC voltage control DC current source VCCS1,
The emitter stage of positive-negative-positive BJT pipe Q1 one end simultaneously with the anode, the negative electrode of diode D1 and electric capacity C1 of alternating-current voltage source vac
It is connected, the base stage of positive-negative-positive BJT pipe Q1 base stage and DC voltage control DC current source VCCS1 simultaneously with positive-negative-positive BJT pipe Q2
Outfan 2a be connected, the colelctor electrode of positive-negative-positive BJT pipe Q1 simultaneously with the colelctor electrode of positive-negative-positive BJT pipe Q2, one end of electric capacity C2 with
And one end of segmentation access type load Z1 is connected, the other end of the electric capacity C2 other end simultaneously with segmentation access type load Z1, two
The outfan 2b of the anode, the anode of diode D2 and DC voltage control DC current source VCCS1 of pole pipe D1 is connected, two poles
The negative electrode of pipe D2 emitter stage phase simultaneously with the negative terminal, the other end of electric capacity C1 and positive-negative-positive BJT pipe Q2 of alternating-current voltage source vac
Even；
The segmentation access type load Z1 is made up of to Sn is switched sub- load Z11 to sub- load Z1n and switch S1, and son is negative
The one end for carrying Z11 constitutes one end that segmentation access type loads Z1, the other end of sub- load Z11 simultaneously with one end of switch S1 and
One end of son load Z12 is connected, the like until the other end of son load Z1n is connected with one end of switch Sn, switch Sn
The other end collectively forms the other end that segmentation access type loads Z1 to the other end of switch S1, and switch S1 to switch Sn is led when different
Logical, sub- load Z11 to sub- load Z1n is sequentially ingressed in the single phase bridge type rectifier circu to Sn is switched by switching S1, or
Son load Z1n to sub- load Z11 is picked out from the single phase bridge type rectifier circu to S1 is switched successively by switching Sn, and n is big
In the integer equal to 1；
Son load in the input 1a of the DC voltage control DC current source VCCS1 and segmentation access type load Z1
One end of Z1j is connected, and the value of j is 1≤j≤n, the input 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 is allowed 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 envelope peak iac_enp of input current iac is little
In the increment of virtual value Vac of input voltage vac, the also increment including envelope peak iac_enp of input current iac is negative
Number；If input capacitance C1 is sufficiently small and DC current gain β 1 of positive-negative-positive BJT pipe Q1 equal to positive-negative-positive BJT pipe Q2 unidirectional current
Flow enhancement β 2, then 1 f1 (u1) of | iac |≤| iac_en | ≈ β, f1 (u1) are to flow into DC voltage control DC current source
The electric current of VCCS1 outfan 2a, u1 are DC voltage control DC current source VCCS1 inputs 1a to DC voltage control direct current
The voltage of current source VCCS1 input 1b, and u1=vj, vj be segmented access type load Z1 neutrons load Z1j one end extremely
Segmentation access type loads the voltage of the Z1 other ends.
Further, the DC voltage control DC current source VCCS1 meets：When in the segmentation access type load Z1
When sub- load Z11 to sub- load Z1j-1 is constant-pressure type load, son when Vc extremely switchs either switch conducting in Sn for switch Sj-1
The total voltage drop of load Z11 to sub- load Z1j-1,In the case of,
Peak values of the u1p for u1, peak values of the vjp for vj,Coefficient A1 and B1 are all higher than 0.
If A1<The increment of B1 and Vac is more than zero, then the peak value increment of f1 (u1) is negative, and the increment of iac_enp is also
Negative.
Further, with regard to a kind of preferred version of DC voltage control DC current source VCCS1, the unidirectional current is voltage-controlled
DC current source VCCS1 processed includes diode Da1, resistance Ra1, resistance Ra2, resistance Ra3, resistance Ra4, resistance Ra5, electric capacity
The anode of Ca1, NPN type BJT pipe Qa1 and NPN type BJT pipe Qa2, diode Da1 constitutes DC voltage control DC current source
The negative electrode of the input 1a of VCCS1, diode Da1 is connected with one end of resistance Ra5, and the other end of resistance Ra5 is while and electric capacity
One end of Ca1 and one end of resistance Ra4 are connected, and the other end of electric capacity Ca1 constitutes DC voltage control DC current source VCCS1
Input 1b, the other end of resistance Ra4 is connected with the base stage of NPN type BJT pipe Qa2, and the colelctor electrode of NPN type BJT pipe Qa2 is simultaneously
One end of base stage, one end of resistance Ra2 and resistance Ra3 with NPN type BJT pipe Qa1 is connected, the other end and the friendship of resistance Ra2
The anode of stream voltage 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 pipe Qa1
Colelctor electrode constitute DC voltage control DC current source VCCS1 outfan 2a, the emitter stage and resistance of NPN type BJT pipe Qa1
One end of Ra1 is connected, and the other end of resistance Ra1 collectively forms DC voltage control direct current with the emitter stage of NPN type BJT pipe Qa2
The outfan 2b of current source VCCS1.
Ignore the forward conduction voltage drop of Da1, ignore 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 is also sufficiently large, Ra2=Ra3 and Ra5<<Ra4.WhenAndWhen, derive：
WhenWhen,
Take coefficient
WhenWhen, f1 (u1) ≈ 0；
When the increment of β a2 Ra2 ＞ Ra4 and Vac is more than zero, takeThe then peak of f1 (u1)
Value increment is negative.
Further, with regard to another kind of preferred version of DC voltage control DC current source VCCS1, the DC voltage
Control DC current source VCCS1 includes many voltage-multiplying circuits of three ports, diode Db6, resistance Rb1, resistance Rb2, resistance
Rb3, resistance Rb4 and positive-negative-positive BJT pipe Qb1, the port c of many voltage-multiplying circuits constitute the DC voltage control DC current source
The input 1a of VCCS1, the port d of many voltage-multiplying circuits constitute the input of the DC voltage control DC current source VCCS1
1b, the port e of many voltage-multiplying circuits are connected with the anode of diode Db6, and the negative electrode of diode Db6 is connected with one end of resistance Rb4,
The other end of resistance Rb4 is connected with one end of resistance Rb3 and the base stage of positive-negative-positive BJT pipe Qb1 simultaneously, positive-negative-positive BJT pipe Qb1's
Emitter stage 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
Go out and hold 2a, the colelctor electrode of positive-negative-positive BJT pipe Qb1 is connected with one end of resistance Rb2, and the other end of resistance Rb2 is another with resistance Rb3
One end collectively forms the outfan 2b of DC voltage control DC current source VCCS1.
The voltage of many voltage-multiplying circuit port e to many voltage-multiplying circuit port d be many voltage-multiplying circuit port c extremely
K times of the voltage peak of many voltage-multiplying circuit port d, k>1.
Ignore the emitter stage-base stage conduction voltage drop and the forward conduction voltage drop of diode Db6 of Qb1, it is assumed that the direct current of Qb1
Currentgainβ b1 is sufficiently large, in DC voltage control DC current source VCCS1 outfans 2a to DC voltage control DC current
Voltage u2 ≈ | vac | of source VCCS1 outfan 2b, 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 is more than zero, takeThen f1 (u1)
Peak value increment is negative.
Many voltage-multiplying circuits are voltage triplers, k ≈ 3, many voltage-multiplying circuits by diode Db1, diode Db2,
Diode Db3, diode Db4, diode Db5, electric capacity Cb1, electric capacity Cb2, electric capacity Cb3, electric capacity Cb4 and electric capacity Cb5 composition, two
One end of the anode of pole pipe Db1 and one end of electric capacity Cb2 and electric capacity Cb4 collectively forms the port c of many voltage-multiplying circuits, and two
The negative electrode of pole pipe Db1 is connected with one end of the anode and electric capacity Cb1 of diode Db2 simultaneously, the other end and electric capacity of electric capacity Cb1
One end of Cb3 and one end of electric capacity Cb5 collectively form the port d of many voltage-multiplying circuits, the negative electrode of diode Db2 simultaneously with
The anode of the other end and diode Db3 of electric capacity Cb2 is connected, the negative electrode of diode Db3 simultaneously with the other end of electric capacity Cb3 with
And the anode of diode Db4 is connected, the negative electrode of diode Db4 anode simultaneously with the other end and diode Db5 of electric capacity Cb4
It is connected, the negative electrode of diode Db5 collectively forms the port e of many voltage-multiplying circuits with the other end of electric capacity Cb5.
As f1 (u1)>When switch S1 to switch Sn in 0 but segmentation access type load Z1 is turned off, input current iac's
Can there is obvious breach in waveform, the breach can cause larger harmonic component, not only reduce the PF values of circuit but also increase
The THD values of circuit.
In order to compensate the breach, the basis that formula of can presenting in the rear limits the single phase bridge type rectifier circu of input current envelope
It is upper to increase a current harmonics compensation branch road.The port a of the current harmonics compensation branch road and the one of segmentation access type load Z1
End is connected, and the port b of the current harmonics compensation branch road is connected with the other end of segmentation access type load Z1, as f1 (u1)>0 and
When switch S1 to switch Sn in segmentation access type load Z1 is turned off, the current harmonics compensation branch road work is humorous from electric current
The electric current i2 that ripple compensation tributary port a is flowed into>0, if C2 is sufficiently small, now absolute value | iac | ≈ i2 of input current iac；When
When switch S1 is to the either switch conducting switched in Sn, the current harmonics compensation branch road does not work, inflow current harmonic compensation
The electric current i2 ≈ 0 of tributary port a.
A kind of preferred version of branch road, current harmonics compensation routing resistance Rc1, the resistance are compensated with regard to current harmonics
Rc2, resistance Rc3, resistance Rc4, resistance Rc5, electric capacity Cc1, NPN type BJT pipe Qc1 and NPN type BJT pipe Qc2 composition, resistance Rc4
One end of one end and resistance Rc5 collectively form the port a that the current harmonics compensates branch road, the other end and NPN of resistance Rc4
The colelctor electrode of the base stage and NPN type BJT pipe Qc1 of type BJT pipe Qc2 is connected, the other end and the NPN type BJT pipe Qc2 of resistance Rc5
Colelctor electrode be connected, the emitter stage of NPN type BJT pipe Qc2 and the emitter stage of NPN type BJT pipe Qc1, one end of electric capacity Cc1 and electricity
One end of resistance Rc3 collectively forms the port b that the current harmonics compensates branch road, and the base stage of NPN type BJT pipe Qc1 is while and electric capacity
One end of the other end of Cc1, the other end of resistance Rc3, one end of resistance Rc1 and resistance Rc2 is connected, and 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.
Assume base-emitter conduction voltage drops of the Rc1=Rc2 and VBEc1 for Qc1, whenWhen, Qc1 conductings, Qc2 cut-offs flow into the current harmonics compensation tributary port a's
Electric current i2 ≈ 0；WhenWhen, Qc1 cut-offs, Qc2 conductings, if f1 (u1)>0, then flow into described
Current harmonics compensates the electric current i2 of tributary port a>0.
The present invention technology design be：A kind of DC voltage control DC current source VCCS1 is constructed, replaces existing single-phase bridge
Resistance R1 in formula rectification circuit, is realized in wide input voltage model by way of rear feed using the characteristic of segmentation access type load
Effectively suppress the envelope increment of input current in enclosing, lift the safety and reliability of single phase bridge type rectifier circu.Additionally, being
The waveform gap problem of input current iac is solved, a kind of scheme for increasing current harmonics compensation branch road is proposed.
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, be especially suitable for the application scenario of wide input voltage range, as its core component
DC voltage control DC current source simple structure, extensibility are 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 with regard to 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 with regard to 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 compensates branch road comprising current harmonics.
Fig. 9 is the circuit diagram that the embodiment of the present invention 3 compensates branch road with regard to current harmonics.
Figure 10 is the simulation waveform of the embodiment of the present invention 4.
Specific embodiment
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 pipe Q1, positive-negative-positive BJT pipe Q2, input capacitance C1, output capacitance C2, diode D1, diode D2 and DC voltage control are straight
Stream current source VCCS1, the emitter stage of positive-negative-positive BJT pipe Q1 simultaneously with the anode of alternating-current voltage source vac, the negative electrode of diode D1 with
And one end of electric capacity C1 is connected, the base stage of positive-negative-positive BJT pipe Q1 is simultaneously straight with the base stage and DC voltage control of positive-negative-positive BJT pipe Q2
The outfan 2a of stream current source VCCS1 is connected, the colelctor electrode of positive-negative-positive BJT pipe Q1 colelctor electrode, electricity simultaneously with positive-negative-positive BJT pipe Q2
The one end for holding C2 and the one end for being segmented access type load Z1 are connected, and the other end of electric capacity C2 loads Z1 with segmentation access type simultaneously
The other end, the anode of diode D1, the outfan of the anode of diode D2 and DC voltage control DC current source VCCS1
2b is connected, the negative electrode of diode D2 negative terminal simultaneously with alternating-current voltage source vac, the other end of electric capacity C1 and positive-negative-positive BJT pipe Q2
Emitter stage be connected；
The segmentation access type load Z1 is made up of to Sn is switched sub- load Z11 to sub- load Z1n and switch S1, and son is negative
The one end for carrying Z11 constitutes one end that segmentation access type loads Z1, the other end of sub- load Z11 simultaneously with one end of switch S1 and
One end of son load Z12 is connected, the like until the other end of son load Z1n is connected with one end of switch Sn, switch Sn
The other end collectively forms the other end that segmentation access type loads Z1 to the other end of switch S1, and switch S1 to switch Sn is led when different
Logical, sub- load Z11 to sub- load Z1n is sequentially ingressed in the single phase bridge type rectifier circu to Sn is switched by switching S1, or
Son load Z1n to sub- load Z11 is picked out from the single phase bridge type rectifier circu to S1 is switched successively by switching Sn, and n is big
In the integer equal to 1；
Son load in the input 1a of the DC voltage control DC current source VCCS1 and segmentation access type load Z1
One end of Z1j is connected, and the value of j is 1≤j≤n, the input 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 is allowed in the single phase bridge type rectifier circu
The envelope iac_en of interior restriction input current iac, the i.e. increment of envelope peak iac_enp of input current iac are enclosed less than input
The increment of virtual value Vac of voltage vac, the also increment including envelope peak iac_enp of input current iac are negative.If defeated
Enter that electric capacity C1 is sufficiently small and DC current gain β 1 of positive-negative-positive BJT pipe Q1 equal to positive-negative-positive BJT pipe Q2 DC current gain β
2, then 1 f1 (u1) of | iac |≤| iac_en | ≈ β, f1 (u1) are to flow into DC voltage control DC current source VCCS1 outfans
The electric current of 2a, u1 are DC voltage control DC current source VCCS1 inputs 1a to DC voltage control DC current source VCCS1
The voltage of input 1b, and u1=vj, vj are that the one end for being segmented access type load Z1 neutrons load Z1j is born to access type is segmented
Carry the voltage of the Z1 other ends.
Further, the DC voltage control DC current source VCCS1 meets：When in the segmentation access type load Z1
When sub- load Z11 to sub- load Z1j-1 is constant-pressure type load, son when Vc extremely switchs either switch conducting in Sn for switch Sj-1
The total voltage drop of load Z11 to sub- load Z1j-1,In the case of,
Peak values of the u1p for u1, peak values of the vjp for vj,A1 and B1 are big for coefficient
In 0.
If A1<The increment of B1 and Vac is more than zero, then the peak value increment of f1 (u1) is negative, and the increment of iac_enp is also
Negative.
Embodiment 1：With reference to Fig. 3 and Fig. 4, the DC voltage control DC current source VCCS1 of embodiments of the invention 1 includes
Diode Da1, resistance Ra1, resistance Ra2, resistance Ra3, resistance Ra4, resistance Ra5, electric capacity Ca1, NPN type BJT pipe Qa1 and NPN
The anode of type BJT pipe Qa2, diode Da1 constitutes the input 1a, diode Da1 of DC voltage control DC current source VCCS1
Negative electrode be connected with one end of resistance Ra5, the other end of resistance Ra5 one end and one end of resistance Ra4 simultaneously with electric capacity Ca1
It is connected, the other end of electric capacity Ca1 constitutes the input 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 pipe Qa2, the colelctor electrode of NPN type BJT pipe Qa2 base stage, resistance simultaneously with NPN type BJT pipe Qa1
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 colelctor electrode composition DC voltage control of NPN type BJT pipe Qa1 is straight
The outfan 2a of stream current source VCCS1, the emitter stage of NPN type BJT pipe Qa1 are connected with one end of resistance Ra1, and resistance Ra1's is another
The emitter stage of one end and NPN type BJT pipe Qa2 collectively forms the outfan 2b of DC voltage control DC current source VCCS1.
Ignore the forward conduction voltage drop of Da1, ignore 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 is also sufficiently large, Ra2=Ra3 and Ra5<<Ra4.WhenAndWhen, derive：
WhenWhen,
Take coefficient
WhenWhen, f1 (u1) ≈ 0.
When the increment of β a2 Ra2 ＞ Ra4 and Vac is 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 strips
The simulation waveform of absolute value | iac_en |.As shown in Figure 5, β a2 Ra2 ＞ Ra4, when Vac increases, the bag of input current are made
The increment of network peak value iac_enp is negative.
Embodiment 2：With reference to Fig. 3 and Fig. 6, the DC voltage control DC current source VCCS1 of embodiments of the invention 2 includes
Many voltage-multiplying circuits of one three port, diode Db6, resistance Rb1, resistance Rb2, resistance Rb3, resistance Rb4 and positive-negative-positive BJT pipes
Qb1, the port c of many voltage-multiplying circuits constitute the input 1a of the DC voltage control DC current source VCCS1, many voltage-multiplying circuits
Port d constitute the input 1b of the DC voltage control DC current source VCCS1, the port e of many voltage-multiplying circuits and two poles
The anode of pipe Db6 is connected, and the negative electrode of diode Db6 is connected with one end of resistance Rb4, and the other end of resistance Rb4 is while and resistance
One end of Rb3 and the base stage of positive-negative-positive BJT pipe Qb1 are connected, the emitter stage of positive-negative-positive BJT pipe Qb1 and one end phase of resistance Rb1
Even, the other end of resistance Rb1 constitutes the outfan 2a of DC voltage control DC current source VCCS1, the collection of positive-negative-positive BJT pipe 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 outfan 2b of DC current source VCCS1.
Many voltage-multiplying circuits are voltage triplers, by diode Db1, diode Db2, diode Db3, diode Db4,
Diode Db5, electric capacity Cb1, electric capacity Cb2, electric capacity Cb3, electric capacity Cb4 and electric capacity Cb5 composition, the anode and electric capacity of diode Db1
One end of Cb2 and one end of electric capacity Cb4 collectively form the port c of many voltage-multiplying circuits, the negative electrode of diode Db1 simultaneously with
One end of the anode and electric capacity Cb1 of diode Db2 is connected, the other end of electric capacity Cb1 and one end of electric capacity Cb3 and electric capacity
One end of Cb5 collectively forms the port d of many voltage-multiplying circuits, the negative electrode of diode Db2 simultaneously with the other end of electric capacity Cb2 with
And the anode of diode Db3 is connected, the negative electrode of diode Db3 anode simultaneously with the other end and diode Db4 of electric capacity Cb3
It is connected, the negative electrode of diode Db4 is connected with the anode of the other end and diode Db5 of electric capacity Cb4 simultaneously, diode Db5's
The other end of negative electrode and electric capacity Cb5 collectively forms the port e of many voltage-multiplying circuits, and many voltage-multiplying circuit port e are to described
The voltage of many voltage-multiplying circuit port d is ks of many voltage-multiplying circuit port c to the voltage peak of many voltage-multiplying circuit port d
Times, k ≈ 3.
Ignore the emitter stage-base stage conduction voltage drop and the forward conduction voltage drop of diode Db6 of Qb1, it is assumed that the direct current of Qb1
Currentgainβ b1 is sufficiently large, in DC voltage control DC current source VCCS1 outfans 2a to DC voltage control DC current
Voltage u2 ≈ | vac | of source VCCS1 outfan 2b, 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 is 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 strips
The simulation waveform of absolute value | iac_en |.As shown in Figure 7, Rb4 ＜ (k-1) Rb3 is made, when Vac increases, input current
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 on the basis of embodiment 1
Road.The port a of the current harmonics compensation branch road is connected with one end of segmentation access type load Z1, the current harmonics compensation
The port b on road is connected with the other end of segmentation access type load Z1, 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 road work compensates the electric current that tributary port a is flowed into from current harmonics
i2>0, if C2 is sufficiently small, now absolute value | iac | ≈ i2 of input current iac；When switch S1 is to the either switch switched in Sn
During conducting, the current harmonics compensation branch road does not work, the electric current i2 ≈ 0 of inflow current harmonic compensation tributary port a.
Current harmonics compensation routing resistance Rc1, resistance Rc2, resistance Rc3, resistance Rc4, resistance Rc5, the electric capacity
Cc1, NPN type BJT pipe Qc1 and NPN type BJT pipe Qc2 compositions, one end of resistance Rc4 collectively forms described with one end of resistance Rc5
Current harmonics compensates the port a of branch road, the other end of resistance Rc4 and the base stage of NPN type BJT pipe Qc2 and NPN type BJT pipe Qc1
Colelctor electrode be connected, the other end of resistance Rc5 is connected with the colelctor electrode of NPN type BJT pipe Qc2, the emitter stage of NPN type BJT pipe Qc2
One end of emitter stage, one end of electric capacity Cc1 and resistance Rc3 with NPN type BJT pipe Qc1 collectively forms the current harmonics and mends
Repay the port b of branch road, the base stage of the NPN type BJT pipe Qc1 other end simultaneously with electric capacity 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.
Assume base-emitter conduction voltage drops of the Rc1=Rc2 and VBEc1 for Qc1, when
When, Qc1 conductings, Qc2 cut-offs flow into the electric current i2 ≈ 0 that the current harmonics compensates tributary port a；WhenWhen, Qc1 cut-offs, Qc2 conductings, if f1 (u1)>0, then flow into the current harmonics compensation
The electric current i2 of 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 strips
The simulation waveform of absolute value | iac_en |.Fig. 5 of comparative example 1, from Figure 10 of embodiment 3, works as Vac=Vac_
During min, the waveform breach of the input current iac of embodiment 1 is carried out the current harmonics compensation branch road of example 3 and preferably compensate for.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, the protection of the present invention
Being not construed as of scope is only limitted to the concrete form stated by embodiment, and protection scope of the present invention is also and in this area 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 pipe Q1, positive-negative-positive BJT pipe Q2, input capacitance C1, output capacitance C2, diode D1, diode D2 and
The emitter stage of DC voltage control DC current source VCCS1, positive-negative-positive BJT pipe Q1 anode simultaneously with alternating-current voltage source vac, two
One end of the negative electrode and electric capacity C1 of pole pipe D1 is connected, the base stage of positive-negative-positive BJT pipe Q1 simultaneously with the base stage of positive-negative-positive BJT pipe Q2 and
The outfan 2a of DC voltage control DC current source VCCS1 is connected, the colelctor electrode of positive-negative-positive BJT pipe Q1 simultaneously with positive-negative-positive BJT
One end of the colelctor electrode of pipe Q2, one end of electric capacity C2 and segmentation access type load Z1 is connected, the other end of electric capacity C2 simultaneously with
Segmentation access type loads the other end, the anode of diode D1, the anode of diode D2 and the DC voltage control unidirectional current of Z1
The outfan 2b of stream source VCCS1 is connected, the negative electrode of diode D2 simultaneously with the negative terminal of alternating-current voltage source vac, electric capacity C1 it is another
The emitter stage of end and positive-negative-positive BJT pipe Q2 is connected；
The segmentation access type load Z1 is made up of to Sn is switched sub- load Z11 to sub- load Z1n and switch S1, sub- load
One end of Z11 constitutes one end that segmentation access type loads Z1, the other end of sub- load Z11 one end and son simultaneously with switch S1
Load Z12 one end be connected, the like until son load Z1n the other end with switch Sn one end be connected, switch Sn it is another
One end collectively forms the other end that segmentation access type loads Z1 to the other end of switch S1, and switch S1 to switch Sn is led when different
Logical, sub- load Z11 to sub- load Z1n is sequentially ingressed in the single phase bridge type rectifier circu to Sn is switched by switching S1, or
Son load Z1n to sub- load Z11 is picked out from the single phase bridge type rectifier circu to S1 is switched successively by switching Sn, and n is big
In the integer equal to 1；
Son load Z1j in the input 1a of the DC voltage control DC current source VCCS1 and segmentation access type load Z1
One end be connected, the value of j is 1≤j≤n, the input 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 is allowed
Limit the envelope iac_en of input current iac, the i.e. increment of envelope peak iac_enp of input current iac and be less than input voltage
The increment of virtual value Vac of vac, the also increment including envelope peak iac_enp of input current iac are negative.
2. a kind of feedback type as claimed in claim 1 limits the single phase bridge type rectifier circu of input current envelope, and its feature exists
In：F1 (u1) is the electric current for flowing into the DC voltage control DC current source VCCS1 outfan 2a, and u1 is DC voltage control
The voltage of DC current source VCCS1 inputs 1a to DC voltage control DC current source VCCS1 input 1b, vj are connect for segmentation
One end to the segmentation access type for entering formula load Z1 neutrons load Z1j loads the voltage of the Z1 other ends, u1=vj, when the segmentation connects
When the sub- load Z11 to sub- load Z1j-1 entered in formula load Z1 is that constant-pressure type is loaded, Vc is extremely switched in Sn for switch Sj-1 and is appointed
The total voltage drop of son load Z11 to sub- load Z1j-1 during 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, and its feature exists
In：If coefficient A1<The increment of B1 and Vac is 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, its 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, electric capacity Ca1, NPN type BJT pipe Qa1 and NPN type BJT pipe Qa2, diode Da1 constitutes unidirectional current
The input 1a of voltage-controlled DC current source VCCS1 processed, the negative electrode of diode Da1 are connected with one end of resistance Ra5, resistance Ra5's
The other end is connected with one end of electric capacity Ca1 and one end of resistance Ra4 simultaneously, and the other end composition unidirectional current of electric capacity Ca1 is voltage-controlled
The other end of the input 1b of DC current source VCCS1 processed, resistance Ra4 is connected with the base stage of NPN type BJT pipe Qa2, NPN type BJT
The colelctor electrode of pipe Qa2 is connected with one end of the base stage, one end of resistance Ra2 and resistance Ra3 of NPN type BJT pipe Qa1 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 colelctor electrode of NPN type BJT pipe Qa1 constitutes the outfan 2a of DC voltage control DC current source VCCS1, NPN type BJT pipe
The emitter stage of Qa1 is connected with one end of resistance Ra1, and the other end and the emitter stage of NPN type BJT pipe Qa2 of resistance Ra1 are collectively formed
The outfan 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, and its feature exists
In：F1 (u1) is the electric current for flowing into the DC voltage control DC current source VCCS1 outfan 2a, and u1 is DC voltage control
The voltage of DC current source VCCS1 inputs 1a to DC voltage control DC current source VCCS1 input 1b, β a2 are Qa2's
DC current gain, when the son load Z11 to sub- load Z1j-1 in the segmentation access type load Z1 is constant-pressure type load
When, Vc be switch Sj-1 to switch Sn in either switch turn on when son load Z11 to sub- load Z1j-1 total voltage drop, whenWhen the increment of Ra2=Ra3, β a2 Ra2 ＞ Ra4 and Vac is more than zero, the peak value increment of f1 (u1) 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, its feature
It is：The DC voltage control DC current source VCCS1 includes many voltage-multiplying circuits of three ports, diode Db6, resistance
Rb1, resistance Rb2, resistance Rb3, resistance Rb4 and positive-negative-positive BJT pipe Qb1, the port c of many voltage-multiplying circuits constitute the DC voltage
The input 1a of control DC current source VCCS1, the port d of many voltage-multiplying circuits constitute the DC voltage control DC current source
The input 1b of VCCS1, the port e of many voltage-multiplying circuits are connected with the anode of diode Db6, the negative electrode and resistance of diode Db6
One end of Rb4 is connected, and the other end of resistance Rb4 is connected with one end of resistance Rb3 and the base stage of positive-negative-positive BJT pipe Qb1 simultaneously,
The emitter stage of positive-negative-positive BJT pipe Qb1 is connected with one end of resistance Rb1, and the other end of resistance Rb1 constitutes DC voltage control direct current
The outfan 2a of current source VCCS1, the colelctor electrode of positive-negative-positive BJT pipe Qb1 are connected with one end of resistance Rb2, and resistance Rb2's is another
The other end of end and resistance Rb3 collectively forms the outfan 2b of DC voltage control DC current source VCCS1；
The voltage of many voltage-multiplying circuit port e to many voltage-multiplying circuit port d is many voltage-multiplying circuit port c to described
K times of the voltage peak of many 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, and its feature exists
In：F1 (u1) is the electric current for flowing into the DC voltage control DC current source VCCS1 outfan 2a, and u1 is DC voltage control
The voltage of DC current source VCCS1 inputs 1a to DC voltage control DC current source VCCS1 input 1b, when the segmentation
When sub- load Z11 to sub- load Z1j-1 in access type load Z1 is that constant-pressure type is loaded, Vc is extremely switched in Sn for switch Sj-1
The total voltage drop of son load Z11 to sub- load Z1j-1 when either switch is turned on, 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, and its feature exists
In：Many voltage-multiplying circuits are voltage triplers, k ≈ 3, and many voltage-multiplying circuits are by diode Db1, diode Db2, diode
Db3, diode Db4, diode Db5, electric capacity Cb1, electric capacity Cb2, electric capacity Cb3, electric capacity Cb4 and electric capacity Cb5 composition, diode
One end of the anode of Db1 and one end of electric capacity Cb2 and electric capacity Cb4 collectively forms the port c of many voltage-multiplying circuits, diode
The negative electrode of Db1 is connected with one end of the anode and electric capacity Cb1 of diode Db2 simultaneously, the other end and the electric capacity Cb3 of electric capacity Cb1
One end and one end of electric capacity Cb5 collectively form the port d of many voltage-multiplying circuits, the negative electrode of diode Db2 simultaneously with electricity
The anode for holding the other end and diode Db3 of Cb2 is connected, the negative electrode of diode Db3 simultaneously with the other end of electric capacity Cb3 and
The anode of diode Db4 is connected, the negative electrode of diode Db4 anode phase simultaneously with the other end and diode Db5 of electric capacity Cb4
Even, the negative electrode of diode Db5 and the other end of electric capacity Cb5 collectively form the port e of many voltage-multiplying circuits.
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, its feature
It is：The feedback type limits the single phase bridge type rectifier circu of input current envelope and also compensates branch road including a current harmonics,
The port a of the current harmonics compensation branch road is connected with one end of segmentation access type load Z1, and the current harmonics compensates branch road
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 outfan 2a, and u1 is that DC voltage control is straight
The voltage of stream current source VCCS1 inputs 1a to DC voltage control DC current source VCCS1 input 1b, as f1 (u1)>0 and
When switch S1 to switch Sn in segmentation access type load Z1 is turned off, the current harmonics compensation branch road work is humorous from electric current
The electric current i2 that ripple compensation tributary port a is flowed into>0, if C2 is sufficiently small, now absolute value | iac | ≈ i2 of input current iac；When
When switch S1 is to the either switch conducting switched in Sn, the current harmonics compensation branch road 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, and its feature exists
In：Described current harmonics compensation routing resistance Rc1, resistance Rc2, resistance Rc3, resistance Rc4, resistance Rc5, electric capacity Cc1, NPN
Type BJT pipe Qc1 and NPN type BJT pipe Qc2 compositions, it is humorous that one end of resistance Rc4 collectively forms the electric current with one end of resistance Rc5
Ripple compensates the port a of branch road, the other end of resistance Rc4 and the base stage of NPN type BJT pipe Qc2 and the current collection of NPN type BJT pipe Qc1
Extremely it is connected, the other end of resistance Rc5 is connected with the colelctor electrode of NPN type BJT pipe Qc2, the emitter stage and NPN of NPN type BJT pipe Qc2
One end of the emitter stage, one end of electric capacity Cc1 and resistance Rc3 of type BJT pipe Qc1 collectively forms the current harmonics compensation branch road
Port b, the base stage of the NPN type BJT pipe Qc1 other end simultaneously with electric capacity Cc1, the other end of resistance Rc3, the one of resistance Rc1
One end of end and resistance Rc2 is 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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