CN106787858B - A kind of feed forward type limits the single phase bridge type rectifier circu of input current envelope - Google Patents
A kind of feed forward type limits the single phase bridge type rectifier circu of input current envelope Download PDFInfo
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- CN106787858B CN106787858B CN201611127795.8A CN201611127795A CN106787858B CN 106787858 B CN106787858 B CN 106787858B CN 201611127795 A CN201611127795 A CN 201611127795A CN 106787858 B CN106787858 B CN 106787858B
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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
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
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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
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
- H02M1/346—Passive non-dissipative snubbers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
A kind of feed forward 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 n alternating voltage control DC current source VCCS1 to VCCSn, n is the integer more than or equal to 1, alternating voltage controls the envelope iac_en that DC current source VCCSj (value of j is 1 to n) limits 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 is negative.The present invention realizes the envelope increment that input current is effectively inhibited in wide input voltage range by the way of input voltage feed forward, 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, such as: micro-
Energy collecting system, grid-connected power generation system, battery charging system, segmentation access type DC load system etc., especially one
Kind has the single phase bridge type rectifier circu of input current envelope limitation function.
Background technique
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 pipe Q2, input capacitance C1, output capacitance C2, diode D1, diode D2 and resistance R1 composition, 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 capacitor C1 simultaneously, PNP
The base stage of type BJT pipe Q1 is connected with one end of the base stage of positive-negative-positive BJT pipe Q2 and resistance R1 simultaneously, the current collection of positive-negative-positive BJT pipe Q1
Pole is connected with one end of the collector of positive-negative-positive BJT pipe Q2, one end of capacitor C2 and load Z1 simultaneously, the other end of capacitor C2
It is connected simultaneously with the anode of the load other end of Z1, the anode of diode D1, the other end of resistance R1 and diode D2, two poles
The cathode of the pipe D2 emitter phase with the negative terminal of alternating-current voltage source vac, the other end of capacitor C1 and positive-negative-positive BJT pipe Q2 simultaneously
Even.
If C1 is sufficiently small and the DC current gain β 1 of Q1 is equal to the DC current gain β 2 of Q2, and ignores Q1's and Q2
The envelope iac_en of emitter-base stage conduction voltage drop, input current iac meetsAssuming that handing over
The range Vac_min to Vac_max of the voltage effective value Vac of galvanic electricity potential source vac is wide scope, then corresponding input current
The envelope peak iac_enp of iac also will be that wide scope changes.In the case where Vac=Vac_min, the packet of input current iac
Network peak valueIn the case where Vac=Vac_max, the envelope peak of input current iacIt can be seen that the voltage effective value Vac as alternating-current voltage source vac becomes from Vac_min
Changing to Vac_max, the envelope peak iac_enp of input current iac effectively to inhibit.That is the electricity of alternating-current voltage source vac
It is pressed with that valid value Vac is bigger, the envelope peak iac_enp of input current iac also bigger (see Fig. 2).To wide input voltage range
For rectification circuit, the envelope peak iac_enp of this input current iac cannot effectively inhibit insufficient by the entire electricity of threat
The reliability and safety on road.
Summary of the invention
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 provides the envelope peak iac_enp of effectively inhibition input current iac a kind of, structure simply feedovers
The single phase bridge type rectifier circu of formula restriction input current envelope.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of feed forward 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 n alternating voltage control DC current source
VCCS1 to VCCSn, n are integer more than or equal to 1, the emitter of positive-negative-positive BJT pipe Q1 simultaneously with alternating-current voltage source vac just
The input terminal j1a that end, the cathode of diode D1, one end of capacitor C1 and alternating voltage control DC current source VCCSj is connected,
The value of j is 1 to n, and the base stage of positive-negative-positive BJT pipe Q1 controls direct current with the base stage and alternating voltage of positive-negative-positive BJT pipe Q2 simultaneously
The output end j2a of stream source VCCSj is connected, the collector of positive-negative-positive BJT pipe Q1 while collector, capacitor with positive-negative-positive BJT pipe Q2
One end of C2 and the one end for loading Z1 are connected, the other end of capacitor C2 while the sun with the other end of load Z1, diode D1
The output end j2b of pole, the anode of diode D2 and alternating voltage control DC current source VCCSj is connected, the yin of diode D2
Pole is voltage-controlled with the negative terminal of alternating-current voltage source vac, the other end of capacitor C1, the emitter of positive-negative-positive BJT pipe Q2 and alternating current simultaneously
The input terminal j1b of DC current source VCCSj processed is connected；
The input voltage model that the alternating voltage control DC current source VCCSj allows in the single phase bridge type rectifier circu
The interior envelope iac_en for limiting 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 is negative；Assuming that
Capacitor C1 is sufficiently small and the DC current gain β 1 of positive-negative-positive BJT pipe Q1 is equal to the DC current gain β 2 of positive-negative-positive BJT pipe Q2,
ThenFj (uj) is to flow into alternating voltage control DC current source VCCSj output end j2a
Electric current, uj are that alternating voltage control DC current source VCCSj input terminal j1a is defeated to the voltage-controlled DC current source VCCSj processed of alternating current
Enter to hold the voltage of j1b.
Further, the alternating voltage control DC current source VCCSj meets:
Ujp is the peak value of uj.WhenWhen,
Coefficient Aj, Bj, Cj are all larger than 0.When the increment of Aj < Bj and Vac are greater than zero, uj=vac is taken, the peak value increment of fj (uj) is negative
Number.
About a kind of preferred embodiment of alternating voltage control DC current source VCCSj, the alternating voltage controls direct current
Stream source VCCSj includes diode Dja1, diode Dja2, diode Dja3, resistance Rja1, resistance Rja2, resistance Rja3, resistance
Rja4, voltage-stabiliser tube Zja1, capacitor Cja1, capacitor Cja2, NPN type BJT pipe Qja1 and NPN type BJT pipe Qja2, diode Dja1's
Anode constitutes the input terminal j1a of alternating voltage control DC current source VCCSj, and it is voltage-controlled that the anode of diode Dja2 constitutes alternating current
The cathode of the input terminal j1b of DC current source VCCSj processed, diode Dja1 cathode, the capacitor Cja1 with diode Dja2 simultaneously
One end, one end of resistance Rja1 and one end of resistance Rja3 be connected, the yin of the other end of resistance Rja1 and voltage-stabiliser tube Zja1
Extremely be connected, the anode of voltage-stabiliser tube Zja1 is connected with the anode of diode Dja3, the cathode of diode Dja3 at the same with capacitor Cja2
One end and resistance Rja2 one end be connected, the other end of resistance Rja2 is connected with the base stage of NPN type BJT pipe Qja1, NPN type
The collector of BJT pipe Qja1 is connected with the base stage of the other end of resistance Rja3 and NPN type BJT pipe Qja2 simultaneously, NPN type BJT
The collector of pipe Qja2 constitutes the output end j2a of alternating voltage control DC current source VCCSj, the transmitting of NPN type BJT pipe Qja2
Pole is connected with one end of resistance Rja4, the emitter of the other end of resistance Rja4 and NPN type BJT pipe Qja1, capacitor Cja2 it is another
The other end of one end and capacitor Cja1 collectively form the output end j2b of alternating voltage control DC current source VCCSj.
The forward conduction voltage drop for ignoring Dja1, Dja2 and Dja3 ignores the base-emitter conducting pressure of Qja1 and Qja2
Drop, it is assumed that the DC current gain that reverse-conducting pressure drop that Vzja1 is voltage-stabiliser tube Zja1, β ja1 are Qja1, when Cja1 is sufficiently small,
Cja2 is sufficiently large, Qja2 DC current gain β ja2 is also sufficiently large, uj=vac,When, it derives:
If
ThenTake coefficient
When the increment of β ja1Rja3 > Rja2 and Vac are greater than zero, uj=vac is taken, the peak value increment of fj (uj) is negative
Number.
Further, the alternating voltage control DC current source VCCSj further includes resistance Rja5, resistance Rja6, resistance
Rja7, resistance Rja8, resistance Rja9, NPN type BJT pipe Qja3 and NPN type BJT pipe Qja4, one end of resistance Rja5 and NPN type
The emitter of BJT pipe Qja2 is connected, the other end of resistance Rja5 one end with resistance Rja6 and NPN type BJT pipe Qja3 simultaneously
Base stage be connected, the collector of NPN type BJT pipe Qja3 simultaneously with one end of resistance Rja7 and the base stage of NPN type BJT pipe Qja4
It is connected, the collector of NPN type BJT pipe Qja4 is connected with one end of resistance Rja8, and the other end and NPN type BJT of resistance Rja8 is managed
The collector of Qja2 is connected, and the emitter of NPN type BJT pipe Qja4 is connected with one end of resistance Rja9, the other end of resistance Rja9
It is connected simultaneously with the other end of the emitter of NPN type BJT pipe Qja1, the emitter of NPN type BJT pipe Qja3 and resistance Rja6,
The other end of resistance Rja7 is connected with the cathode of diode Dja3.The program can improve the PF value of rectification circuit, THD value and defeated
Enter current harmonics amount, shortens the dead time in input current iac waveform.
Emitter-the base-on voltage for ignoring Q1 and Q2 ignores collector-emitter conduction voltage drop of Qja4, exchange
The voltage uj2 ≈ of voltage control DC current source VCCSj output end j2a to output end j2b | vac |, it is assumed that Rja9 < < Rja8 is pushed away
It leads:
WhenAndWhen,
About another preferred embodiment of alternating voltage control DC current source VCCSj, the alternating voltage controls direct current
Current source VCCSj include more voltage-multiplying circuits of four ports, diode Djb4, resistance Rjb4, resistance Rjb5, resistance Rjb6,
Resistance Rjb7 and positive-negative-positive BJT pipe Qjb1, the port jc of more voltage-multiplying circuits constitute the alternating voltage and control DC current source
The input terminal j1a, the port jd of more voltage-multiplying circuits of VCCSj constitutes the alternating voltage control DC current source VCCSj's
Input terminal j1b, the port je of more voltage-multiplying circuits are connected with the anode of diode Djb4, the port jf of more voltage-multiplying circuits
The defeated of the alternating voltage control DC current source VCCSj is collectively formed with one end of resistance Rjb5 and one end of resistance Rjb7
The cathode of outlet j2b, diode Djb4 are connected with one end of resistance Rjb4, and the other end of resistance Rjb4 is simultaneously with resistance Rjb5's
The base stage of the other end and positive-negative-positive BJT pipe Qjb1 are connected, one end phase of the emitter and resistance Rjb6 of positive-negative-positive BJT pipe Qjb1
Even, the other end of resistance Rjb6 constitutes the output end j2a of the alternating voltage control DC current source VCCSj, positive-negative-positive BJT pipe
The collector of Qjb1 is connected with the other end of resistance Rjb7.
The voltage of more voltage-multiplying circuit port je to more voltage-multiplying circuit port jf and more voltage-multiplying circuit ports
The voltage peak of jc to more voltage-multiplying circuit port jd are in a linear relationship, proportionality coefficient k > 1.
About a kind of preferred embodiment of more voltage-multiplying circuits, more voltage-multiplying circuits are voltage triplers, proportionality coefficient k ≈ 3,
More voltage-multiplying circuits by capacitor Cjb1, capacitor Cjb2, capacitor Cjb3, diode Djb1, diode Djb2, diode Djb3,
Voltage-stabiliser tube Zjb1, voltage-stabiliser tube Zjb2, voltage-stabiliser tube Zjb3, resistance Rjb1, resistance Rjb2, resistance Rjb3 composition, the one of capacitor Cjb1
End constitutes the port jc of more voltage-multiplying circuits, the other end of capacitor Cjb1 while anode and diode with voltage-stabiliser tube Zjb1
The anode of Djb2 is connected, and the cathode of voltage-stabiliser tube Zjb1 is connected with one end of resistance Rjb1, the other end and diode of resistance Rjb1
The cathode of Djb1 is connected, and the anode of diode Djb1 collectively forms the port of more voltage-multiplying circuits with one end of capacitor Cjb2
The cathode of jd, diode Djb2 are connected with one end of resistance Rjb2, the cathode phase of the other end and voltage-stabiliser tube Zjb2 of resistance Rjb2
Even, the anode of voltage-stabiliser tube Zjb2 is connected with the other end of the anode of diode Djb3 and capacitor Cjb2 simultaneously, diode Djb3
Cathode be connected with one end of resistance Rjb3, the other end of resistance Rjb3 is connected with the cathode of voltage-stabiliser tube Zjb3, voltage-stabiliser tube Zjb3
Anode and one end of capacitor Cjb3 collectively form the port je of more voltage-multiplying circuits, described in the other end of capacitor Cjb3 is constituted
The port jf of more voltage-multiplying circuits.
Vzjb1 is the reverse-conducting pressure drop of voltage-stabiliser tube Zjb1, and Vzjb2 is the reverse-conducting pressure drop of voltage-stabiliser tube Zjb2, Vzjb3
It is the reverse-conducting pressure drop of voltage-stabiliser tube Zjb3, uj2 is that the alternating voltage controls DC current source VCCSj port j2a to described
Alternating voltage controls the voltage of DC current source VCCSj port j2b, and β jb1 is the DC current gain of positive-negative-positive BJT pipe Qjb1.
The forward conduction voltage drop for ignoring Djb1, Djb2, Djb3 and Djb4 ignores emitter-base stage conduction voltage drop of Qjb1, Q1 and Q2,
When Vzjb1=Vzjb2=Vzjb3,Rjb7<<Rjb6, β jb1 sufficiently large, Rjb6 β jb1>>
(Rjb4//Rjb5) when and Cjb1, Cjb2 and Cjb3 are sufficiently large, because of uj=| vac |, uj2 ≈ | vac |, it derives:
WhenWhen,
Take coefficient
When the increment of Rjb4 < 2Rjb5 and Vac are greater than zero, uj=is taken | vac | and uj2 ≈ | vac |, the peak of fj (uj)
Value increment is negative.
Further, it is the PF value, THD value and the Harmonics of Input amount that improve circuit, shortens in input current iac waveform
Dead time, alternating voltage control DC current source VCCSj further include resistance Rjb8, resistance Rjb9, resistance Rjb10,
One end and the positive-negative-positive BJT pipe of resistance Rjb11, resistance Rjb12, NPN type BJT pipe Qjb2 and NPN type BJT pipe Qjb3, resistance Rjb8
The collector of Qjb1 is connected, the other end of resistance Rjb8 simultaneously with one end of resistance Rjb9 and the base stage of NPN type BJT pipe Qjb2
It is connected, the collector of NPN type BJT pipe Qjb2 is connected with the base stage of one end of resistance Qjb10 and NPN type BJT pipe Qjb3 simultaneously,
The collector of NPN type BJT pipe Qjb3 is connected with one end of resistance Rjb11, and the other end of resistance Rjb11 is another with resistance Rjb6's
End is connected, and the emitter of NPN type BJT pipe Qjb3 is connected with one end of resistance Rjb12, the other end and resistance of resistance Rjb12
The other end of one end of Rjb7, the emitter of NPN type BJT pipe Qjb2 and resistance Rjb9 is connected, the other end of resistance Rjb10 with
The anode of diode Djb4 is connected.
Ignore collector-emitter conduction voltage drop of Qjb3, it is assumed that Rjb12 < < Rjb11, if more voltage-multiplying circuits are three
Voltage-multiplying circuit can derive:
WhenAndWhen,
Technical concept of the invention are as follows: construct a kind of alternating voltage control DC current source VCCSj, replace existing single-phase bridge
Resistance R1 in formula rectification circuit, realized by the way of input voltage feed forward effectively inhibited in wide input voltage range it is defeated
The envelope increment iac_enp for entering electric current iac, promotes the safety and reliability of single phase bridge type rectifier circu.
Beneficial effects of the present invention are mainly manifested in: feed forward 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 of wide input voltage range is very suitable to, as its core component
Alternating voltage control DC current source structure is simple, scalability is strong.
Detailed description of the invention
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 circuit diagram of the invention.
Fig. 4 is circuit diagram of the embodiment of the present invention 1 about alternating voltage control DC current source VCCSj.
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 alternating voltage control DC current source VCCSj.
Fig. 7 is the simulation waveform of the embodiment of the present invention 2.
Fig. 8 is circuit diagram of the embodiment of the present invention 3 about alternating voltage control DC current source VCCSj.
Fig. 9 is the simulation waveform of the embodiment of the present invention 3.
Figure 10 is circuit diagram of the embodiment of the present invention 4 about alternating voltage control DC current source VCCSj.
Figure 11 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.
Referring to Fig. 3~Figure 11, a kind of feed forward 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 n alternating voltage control
DC current source VCCS1 to VCCSn, n are the integer more than or equal to 1, the emitter of positive-negative-positive BJT pipe Q1 while and alternating voltage
The anode of source vac, the cathode of diode D1, one end of capacitor C1 and alternating voltage control the input of DC current source VCCSj
J1a is held to be connected, the value of j is 1 to n, the base stage of positive-negative-positive BJT pipe Q1 while base stage and alternating voltage with positive-negative-positive BJT pipe Q2
The output end j2a for controlling DC current source VCCSj is connected, the collector of positive-negative-positive BJT pipe Q1 while the collection with positive-negative-positive BJT pipe Q2
Electrode, capacitor C2 one end and load one end of Z1 and be connected, the other end of capacitor C2 simultaneously with the other end of load Z1, two poles
The output end j2b of the anode of pipe D1, the anode of diode D2 and alternating voltage control DC current source VCCSj is connected, two poles
The cathode of pipe D2 simultaneously with the negative terminal of alternating-current voltage source vac, the other end of capacitor C1, the emitter of positive-negative-positive BJT pipe Q2 and friendship
The input terminal j1b of the voltage-controlled DC current source VCCSj processed of galvanic electricity is connected；
The input voltage model that the alternating voltage control DC current source VCCSj allows in the single phase bridge type rectifier circu
The interior envelope iac_en for limiting 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 is negative；Assuming that
Capacitor C1 is sufficiently small and the DC current gain β 1 of positive-negative-positive BJT pipe Q1 is equal to the DC current gain β 2 of positive-negative-positive BJT pipe Q2,
ThenFj (uj) is to flow into alternating voltage control DC current source VCCSj output end j2a
Electric current, uj are that alternating voltage control DC current source VCCSj input terminal j1a is defeated to the voltage-controlled DC current source VCCSj processed of alternating current
Enter to hold the voltage of j1b.
Further, alternating voltage control DC current source VCCSj meets: ujp
For the peak value of uj.WhenWhen,Coefficient
Aj, Bj, Cj are all larger than 0.When the increment of Aj < Bj and Vac are greater than zero, uj=vac is taken, the peak value increment of fj (uj) is negative.
Embodiment 1: referring to Fig. 3 and Fig. 4, the alternating voltage control DC current source VCCSj of the embodiment of the present invention 1 includes two
Pole pipe Dja1, diode Dja2, diode Dja3, resistance Rja1, resistance Rja2, resistance Rja3, resistance Rja4, voltage-stabiliser tube
The anode composition friendship of Zja1, capacitor Cja1, capacitor Cja2, NPN type BJT pipe Qja1 and NPN type BJT pipe Qja2, diode Dja1
The anode of the input terminal j1a of the voltage-controlled DC current source VCCSj processed of galvanic electricity, diode Dja2 constitute alternating voltage and control DC current
The cathode of the input terminal j1b of source VCCSj, diode Dja1 simultaneously with the cathode of diode Dja2, one end of capacitor Cja1, resistance
One end of Rja1 and one end of resistance Rja3 are connected, and the other end of resistance Rja1 is connected with the cathode of voltage-stabiliser tube Zja1, pressure stabilizing
The anode of pipe Zja1 is connected with the anode of diode Dja3, the cathode of diode Dja3 one end with capacitor Cja2 and electricity simultaneously
The one end for hindering Rja2 is connected, and the other end of resistance Rja2 is connected with the base stage of NPN type BJT pipe Qja1, NPN type BJT pipe Qja1's
Collector is connected with the base stage of the other end of resistance Rja3 and NPN type BJT pipe Qja2 simultaneously, the current collection of NPN type BJT pipe Qja2
Pole constitutes the output end j2a of alternating voltage control DC current source VCCSj, the emitter and resistance Rja4 of NPN type BJT pipe Qja2
One end be connected, the other end and capacitor of the emitter of the other end of resistance Rja4 and NPN type BJT pipe Qja1, capacitor Cja2
The other end of Cja1 collectively forms the output end j2b of alternating voltage control DC current source VCCSj.
For the embodiment of the present invention 1, uj=vac, only considerThe case where, ignore Dja1, Dja2 and
The forward conduction voltage drop of Dja3 ignores the base-emitter conduction voltage drop of Qja1 and Qja2, it is assumed that Vzja1 is voltage-stabiliser tube Zja1
Reverse-conducting pressure drop, β ja1 be Qja1 DC current gain, when Cja1 is sufficiently small, Cja2 is sufficiently large, the direct current of Qja2
When flow enhancement β ja2 is also sufficiently large, it can derive:
If
ThenTake coefficient
When the increment of β ja1Rja3 > Rja2 and Vac are greater than zero, uj=vac is taken, the peak value increment of fj (uj) is negative
Number.To all j, if β ja1Rja3 > Rja2 is set up, then the envelope peak iac_enp of input current iac will be with friendship
The increase of the virtual value Vac of galvanic electricity potential source vac and reduce.
Fig. 5 is resistance and switchs only with alternating voltage control DC current source VCCS1 (i.e. n=1) and load Z1
Pipe is connected the simulation waveform obtained in the case where compound load.As shown in Figure 5, when Vac increases, the embodiment of the present invention 1
The increment for having the characteristics that input current iac envelope peak iac_enp is negative.
Embodiment 2: referring to Fig. 3 and Fig. 6, the alternating voltage control DC current source VCCSj of the embodiment of the present invention 2 includes one
More voltage-multiplying circuits, diode Djb4, resistance Rjb4, resistance Rjb5, resistance Rjb6, resistance Rjb7 and the positive-negative-positive BJT of a four port
Pipe Qjb1, the port jc of more voltage-multiplying circuits constitute the input terminal j1a of the alternating voltage control DC current source VCCSj,
The port jd of more voltage-multiplying circuits constitutes the input terminal j1b of alternating voltage control DC current source VCCSj, and described more times
The port je of volt circuit is connected with the anode of diode Djb4, one end of the port jf and resistance Rjb5 of more voltage-multiplying circuits with
And one end of resistance Rjb7 collectively forms the output end j2b, diode Djb4 of the alternating voltage control DC current source VCCSj
Cathode be connected with one end of resistance Rjb4, the other end of the resistance Rjb4 other end and positive-negative-positive BJT with resistance Rjb5 simultaneously
The base stage of pipe Qjb1 is connected, and the emitter of positive-negative-positive BJT pipe Qjb1 is connected with one end of resistance Rjb6, the other end of resistance Rjb6
Constitute the output end j2a of the alternating voltage control DC current source VCCSj, the collector and resistance of positive-negative-positive BJT pipe Qjb1
The other end of Rjb7 is connected.
The voltage of more voltage-multiplying circuit port je to more voltage-multiplying circuit port jf and more voltage-multiplying circuit ports
The voltage peak of jc to more voltage-multiplying circuit port jd are in a linear relationship, proportionality coefficient k > 1.
More voltage-multiplying circuits are voltage triplers, and proportionality coefficient k ≈ 3, more voltage-multiplying circuits are by capacitor Cjb1, capacitor
Cjb2, capacitor Cjb3, diode Djb1, diode Djb2, diode Djb3, voltage-stabiliser tube Zjb1, voltage-stabiliser tube Zjb2, voltage-stabiliser tube
Zjb3, resistance Rjb1, resistance Rjb2 and resistance Rjb3 composition, one end of capacitor Cjb1 constitutes the port of more voltage-multiplying circuits
The other end of jc, capacitor Cjb1 are connected with the anode of the anode of voltage-stabiliser tube Zjb1 and diode Djb2 simultaneously, voltage-stabiliser tube Zjb1
Cathode be connected with one end of resistance Rjb1, the other end of resistance Rjb1 is connected with the cathode of diode Djb1, diode Djb1
Anode and one end of capacitor Cjb2 collectively form the port jd of more voltage-multiplying circuits, the cathode and resistance of diode Djb2
One end of Rjb2 is connected, and the other end of resistance Rjb2 is connected with the cathode of voltage-stabiliser tube Zjb2, the anode of voltage-stabiliser tube Zjb2 and meanwhile with
The anode of diode Djb3 and the other end of capacitor Cjb2 are connected, one end phase of the cathode and resistance Rjb3 of diode Djb3
Even, the other end of resistance Rjb3 is connected with the cathode of voltage-stabiliser tube Zjb3, and the anode of voltage-stabiliser tube Zjb3 and one end of capacitor Cjb3 are total
With the port je for constituting more voltage-multiplying circuits, the other end of capacitor Cjb3 constitutes the port jf of more voltage-multiplying circuits.
For the embodiment of the present invention 2, ignore emitter-base stage conduction voltage drop of Q1 and Q2, uj=| vac |, uj2 ≈ | vac
|.Assuming that Vzjb1 is the reverse-conducting pressure drop of voltage-stabiliser tube Zjb1, Vzjb2 is the reverse-conducting pressure drop of voltage-stabiliser tube Zjb2, and Vzjb3 is
The reverse-conducting pressure drop of voltage-stabiliser tube Zjb3, uj2 are that the alternating voltage controls DC current source VCCSj port j2a to the friendship
The voltage of the voltage-controlled DC current source VCCSj processed port j2b of galvanic electricity, β jb1 are the DC current gains of positive-negative-positive BJT pipe Qjb1.Only
Consider Vzjb1=Vzjb2=Vzjb3 andThe case where, ignore the forward direction of Djb1, Djb2, Djb3 and Djb4
Conduction voltage drop ignores Qjb1 emitter-base stage conduction voltage drop, when Rjb7<<Rjb6, β jb1 sufficiently large, Rjb6 β jb1>>
(Rjb4//Rjb5) it when and Cjb1, Cjb2 and Cjb3 are sufficiently large, can derive:
WhenWhen,
Take coefficient
When the increment of Rjb4 < 2Rjb5 and Vac are greater than zero, uj=is taken | vac | and uj2 ≈ | vac |, the peak of fj (uj)
Value increment is negative.To all j, if Rjb4 < 2Rjb5 is set up, then the envelope peak iac_enp of input current iac
It will reduce with the increase of the virtual value Vac of alternating-current voltage source vac.
Fig. 7 is resistance and switchs only with alternating voltage control DC current source VCCS1 (i.e. n=1) and load Z1
Pipe is connected the simulation waveform obtained in the case where compound load.As shown in Figure 7, when Vac increases, the embodiment of the present invention 2
The increment for having the characteristics that input current iac envelope peak iac_enp is negative.
Embodiment 3: referring to Fig. 3, Fig. 4 and Fig. 8, on the basis of inventive embodiments 1, inventive embodiments 3 add resistance
Rja5, resistance Rja6, resistance Rja7, resistance Rja8, resistance Rja9, NPN type BJT pipe Qja3 and NPN type BJT pipe Qja4, resistance
One end of Rja5 is connected with the emitter of NPN type BJT pipe Qja2, the other end of resistance Rja5 simultaneously with one end of resistance Rja6 with
And the base stage of NPN type BJT pipe Qja3 is connected, the collector of NPN type BJT pipe Qja3 one end with resistance Rja7 and NPN simultaneously
The base stage of type BJT pipe Qja4 is connected, and the collector of NPN type BJT pipe Qja4 is connected with one end of resistance Rja8, and resistance Rja8's is another
One end is connected with the collector of NPN type BJT pipe Qja2, and the emitter of NPN type BJT pipe Qja4 is connected with one end of resistance Rja9,
The other end of the resistance Rja9 emitter and resistance with the emitter of NPN type BJT pipe Qja1, NPN type BJT pipe Qja3 simultaneously
The other end of Rja6 is connected, and the other end of resistance Rja7 is connected with the cathode of diode Dja3.
It is identical with the hypothesis of inventive embodiments 1 for the embodiment of the present invention 3, and ignore emitter-base stage of Q1 and Q2
Conducting voltage, uj=| vac |, uj2 ≈ | vac |.Ignore collector-emitter conduction voltage drop of Qja4, it is assumed that Rja9 < < Rja8,
It can derive: whenAndWhen,
Qja2 cut-off, Qja3 cut-off, Qja4 conducting,
Fig. 9 is resistance and switchs only with alternating voltage control DC current source VCCS1 (i.e. n=1) and load Z1
Pipe is connected the simulation waveform obtained in the case where compound load.As shown in Figure 9, when Vac increases, the embodiment of the present invention 3
The increment for having the characteristics that input current iac envelope peak iac_enp is negative.Compared with the embodiment of the present invention 1, the present invention is real
Applying example 3 has higher PF value, lower THD value and smaller Harmonics of Input amount, the dead zone in input current iac waveform
Time shortens.
Embodiment 4: referring to Fig. 3, Fig. 6 and Figure 10, on the basis of inventive embodiments 2, inventive embodiments 4 add resistance
Rjb8, resistance Rjb9, resistance Rjb10, resistance Rjb11, resistance Rjb12, NPN type BJT pipe Qjb2 and NPN type BJT pipe Qjb3, electricity
One end of resistance Rjb8 is connected with the collector of positive-negative-positive BJT pipe Qjb1, the other end of resistance Rjb8 while one end with resistance Rjb9
And the base stage of NPN type BJT pipe Qjb2 is connected, the collector of NPN type BJT pipe Qjb2 simultaneously with one end of resistance Qjb10 and
The base stage of NPN type BJT pipe Qjb3 is connected, and the collector of NPN type BJT pipe Qjb3 is connected with one end of resistance Rjb11, resistance
The other end of Rjb11 is connected with the other end of resistance Rjb6, one end phase of the emitter and resistance Rjb12 of NPN type BJT pipe Qjb3
Even, the other end of resistance Rjb12 and one end of resistance Rjb7, the emitter of NPN type BJT pipe Qjb2 and resistance Rjb9's is another
End is connected, and the other end of resistance Rjb10 is connected with the anode of diode Djb4.
For the embodiment of the present invention 4, more voltage-multiplying circuits are that voltage tripler is identical with the hypothesis of inventive embodiments 2,
Uj=| vac |, uj2 ≈ | vac |.Ignore collector-emitter conduction voltage drop of Qjb3, it is assumed that Rjb12 < < Rjb11 can be derived
: whenAndWhen, Qjb1 cut-off, Qjb2
Cut-off, Qjb3 conducting,
Figure 11 is resistance and switchs only with alternating voltage control DC current source VCCS1 (i.e. n=1) and load Z1
Pipe is connected the simulation waveform obtained in the case where compound load.As shown in Figure 11, when Vac increases, the embodiment of the present invention 4
The increment for having the characteristics that input current iac envelope peak iac_enp is negative.Compared with the embodiment of the present invention 2, the present invention is real
Applying example 4 has higher PF value, lower THD value and smaller Harmonics of Input amount, the dead zone in input current iac waveform
Time shortens.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Range should not be construed as being limited to the specific forms stated in the embodiments, and protection scope of the present invention is also and in this field skill
Art personnel conceive according to the present invention it is conceivable that equivalent technologies mean.
Claims (10)
1. the single phase bridge type rectifier circu that a kind of feed forward type limits 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
N alternating voltage controls DC current source VCCS1 to VCCSn, and n is the integer more than or equal to 1, the emitter of positive-negative-positive BJT pipe Q1
DC current is controlled with the anode of alternating-current voltage source vac, the cathode of diode D1, one end of capacitor C1 and alternating voltage simultaneously
The input terminal j1a of source VCCSj is connected, and the value of j is 1 to n, the base stage of positive-negative-positive BJT pipe Q1 while the base with positive-negative-positive BJT pipe Q2
Pole is connected with the output end j2a of alternating voltage control DC current source VCCSj, the collector of positive-negative-positive BJT pipe Q1 while and PNP
The collector of type BJT pipe Q2, one end of capacitor C2 and load one end of Z1 and be connected, the other end of capacitor C2 simultaneously with load Z1
The other end, the anode of diode D1, the anode of diode D2 and alternating voltage control DC current source VCCSj output end
J2b is connected, the cathode of diode D2 simultaneously with the negative terminal of alternating-current voltage source vac, the other end of capacitor C1, positive-negative-positive BJT pipe Q2
The input terminal j1b of emitter and alternating voltage control DC current source VCCSj are connected；
The alternating voltage control DC current source VCCSj 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 is negative.
2. a kind of feed forward type as described in claim 1 limits the single phase bridge type rectifier circu of input current envelope, feature exists
In: fj (uj) is the electric current for flowing into the alternating voltage control DC current source VCCSj output end j2a, and uj is that alternating current is voltage-controlled
The voltage of DC current source VCCSj input terminal j1a processed to the voltage-controlled DC current source VCCSj input terminal j1b processed of alternating current, whenWhen,Coefficient Aj, Bj, Cj are big
In 0.
3. a kind of feed forward type as claimed in claim 2 limits the single phase bridge type rectifier circu of input current envelope, feature exists
In: if peak value increment of the increment of coefficient Aj < Bj and Vac greater than zero, fj (uj) is negative.
4. a kind of feed forward type as claimed in claim 1 or 2 limits the single phase bridge type rectifier circu of input current envelope, feature
Be: the alternating voltage control DC current source VCCSj includes diode Dja1, diode Dja2, diode Dja3, resistance
Rja1, resistance Rja2, resistance Rja3, resistance Rja4, voltage-stabiliser tube Zja1, capacitor Cja1, capacitor Cja2, NPN type BJT pipe Qja1 and
The anode of NPN type BJT pipe Qja2, diode Dja1 constitutes the input terminal j1a of alternating voltage control DC current source VCCSj, and two
The anode of pole pipe Dja2 constitutes the input terminal j1b of alternating voltage control DC current source VCCSj, and the cathode of diode Dja1 is simultaneously
It is connected with one end of the cathode of diode Dja2, one end of capacitor Cja1, one end of resistance Rja1 and resistance Rja3, resistance
The other end of Rja1 is connected with the cathode of voltage-stabiliser tube Zja1, and the anode of voltage-stabiliser tube Zja1 is connected with the anode of diode Dja3, and two
The cathode of pole pipe Dja3 is connected with one end of one end of capacitor Cja2 and resistance Rja2 simultaneously, the other end of resistance Rja2 and
The base stage of NPN type BJT pipe Qja1 is connected, the collector of NPN type BJT pipe Qja1 while the other end and NPN with resistance Rja3
The base stage of type BJT pipe Qja2 is connected, and the collector of NPN type BJT pipe Qja2 constitutes alternating voltage control DC current source VCCSj's
The emitter of output end j2a, NPN type BJT pipe Qja2 are connected with one end of resistance Rja4, the other end and NPN type of resistance Rja4
It is straight that the other end of the emitter of BJT pipe Qja1, the other end of capacitor Cja2 and capacitor Cja1 collectively forms alternating voltage control
Flow the output end j2b of current source VCCSj.
5. a kind of feed forward type as claimed in claim 4 limits the single phase bridge type rectifier circu of input current envelope, feature exists
In: fj (uj) is the electric current for flowing into the alternating voltage control DC current source VCCSj output end j2a, and uj is that alternating current is voltage-controlled
The voltage of DC current source VCCSj input terminal j1a processed to the voltage-controlled DC current source VCCSj input terminal j1b processed of alternating current, β ja1 are
The DC current gain of Qja1, Vzja1 are the reverse-conducting pressure drop of voltage-stabiliser tube Zja1, whenβja1·
When the increment of Rja3 > Rja2 and Vac are greater than zero, the peak value increment of fj (uj) is negative.
6. a kind of feed forward type as claimed in claim 1 or 2 limits the single phase bridge type rectifier circu of input current envelope, feature
Be: the alternating voltage control DC current source VCCSj includes more voltage-multiplying circuits of four ports, diode Djb4, electricity
Rjb4, resistance Rjb5, resistance Rjb6, resistance Rjb7 and positive-negative-positive BJT pipe Qjb1 are hindered, the port jc of more voltage-multiplying circuits is constituted
The input terminal j1a of the alternating voltage control DC current source VCCSj, the port jd of more voltage-multiplying circuits constitute the exchange
Voltage controls the input terminal j1b of DC current source VCCSj, the anode phase of the port je and diode Djb4 of more voltage-multiplying circuits
Even, one end of port jf and resistance Rjb5 and one end of resistance Rjb7 of more voltage-multiplying circuits collectively form the alternating current
The output end j2b of voltage-controlled DC current source VCCSj processed, the cathode of diode Djb4 are connected with one end of resistance Rjb4, resistance
The other end of Rjb4 is connected with the base stage of the other end of resistance Rjb5 and positive-negative-positive BJT pipe Qjb1 simultaneously, positive-negative-positive BJT pipe Qjb1
Emitter be connected with one end of resistance Rjb6, the other end of resistance Rjb6 constitutes the alternating voltage and controls DC current source
The collector of the output end j2a of VCCSj, positive-negative-positive BJT pipe Qjb1 are connected with the other end of resistance Rjb7；
The voltage and more voltage-multiplying circuit port jc of more voltage-multiplying circuit port je to more voltage-multiplying circuit port jf is extremely
The voltage peak of more voltage-multiplying circuit port jd is in a linear relationship, proportionality coefficient k > 1.
7. a kind of feed forward 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 be voltage tripler, proportionality coefficient k ≈ 3, more voltage-multiplying circuits by capacitor Cjb1, capacitor Cjb2,
Capacitor Cjb3, diode Djb1, diode Djb2, diode Djb3, voltage-stabiliser tube Zjb1, voltage-stabiliser tube Zjb2, voltage-stabiliser tube Zjb3, electricity
Rjb1, resistance Rjb2 and resistance Rjb3 composition are hindered, one end of capacitor Cjb1 constitutes the port jc of more voltage-multiplying circuits, capacitor
The other end of Cjb1 is connected with the anode of the anode of voltage-stabiliser tube Zjb1 and diode Djb2 simultaneously, the cathode of voltage-stabiliser tube Zjb1 and
One end of resistance Rjb1 is connected, and the other end of resistance Rjb1 is connected with the cathode of diode Djb1, the anode of diode Djb1 and
One end of capacitor Cjb2 collectively forms the port jd of more voltage-multiplying circuits, the cathode of diode Djb2 and one end of resistance Rjb2
Be connected, the other end of resistance Rjb2 is connected with the cathode of voltage-stabiliser tube Zjb2, the anode of voltage-stabiliser tube Zjb2 at the same with diode Djb3
Anode and capacitor Cjb2 the other end be connected, the cathode of diode Djb3 is connected with one end of resistance Rjb3, resistance Rjb3
The other end be connected with the cathode of voltage-stabiliser tube Zjb3, the anode of voltage-stabiliser tube Zjb3 and one end of capacitor Cjb3 collectively form described more
The port je of voltage-multiplying circuit, the other end of capacitor Cjb3 constitute the port jf of more voltage-multiplying circuits.
8. a kind of feed forward type as claimed in claim 7 limits the single phase bridge type rectifier circu of input current envelope, feature exists
In: fj (uj) is the electric current for flowing into the alternating voltage control DC current source VCCSj output end j2a, and uj is that alternating current is voltage-controlled
Voltage of the DC current source VCCSj input terminal j1a processed to the voltage-controlled DC current source VCCSj input terminal j1b processed of alternating current, Vzjb1
It is the reverse-conducting pressure drop of voltage-stabiliser tube Zjb1, Vzjb2 is the reverse-conducting pressure drop of voltage-stabiliser tube Zjb2, and Vzjb3 is voltage-stabiliser tube Zjb3
Reverse-conducting pressure drop, when Vzjb1=Vzjb2=Vzjb3,The increment of Rjb4 < 2Rjb5 and Vac
When greater than zero, the peak value increment of fj (uj) is negative.
9. a kind of feed forward type as claimed in claim 4 limits the single phase bridge type rectifier circu of input current envelope, feature exists
In: alternating voltage control DC current source VCCSj further include resistance Rja5, resistance Rja6, resistance Rja7, resistance Rja8,
The transmitting of one end of resistance Rja9, NPN type BJT pipe Qja3 and NPN type BJT pipe Qja4, resistance Rja5 and NPN type BJT pipe Qja2
Extremely it is connected, the other end of resistance Rja5 is connected with the base stage of one end of resistance Rja6 and NPN type BJT pipe Qja3 simultaneously, NPN type
The collector of BJT pipe Qja3 is connected with the base stage of one end of resistance Rja7 and NPN type BJT pipe Qja4 simultaneously, NPN type BJT pipe
The collector of Qja4 is connected with one end of resistance Rja8, the collector phase of the other end and NPN type BJT pipe Qja2 of resistance Rja8
Even, the emitter of NPN type BJT pipe Qja4 is connected with one end of resistance Rja9, the other end of resistance Rja9 and meanwhile with NPN type BJT
The other end of the emitter of pipe Qja1, the emitter of NPN type BJT pipe Qja3 and resistance Rja6 is connected, and resistance Rja7's is another
End is connected with the cathode of diode Dja3.
10. a kind of feed forward type as claimed in claim 7 limits the single phase bridge type rectifier circu of input current envelope, feature exists
In: the alternating voltage control DC current source VCCSj further includes resistance Rjb8, resistance Rjb9, resistance Rjb10, resistance
One end and the positive-negative-positive BJT pipe Qjb1 of Rjb11, resistance Rjb12, NPN type BJT pipe Qjb2 and NPN type BJT pipe Qjb3, resistance Rjb8
Collector be connected, the other end of resistance Rjb8 simultaneously with one end of resistance Rjb9 and the base stage phase of NPN type BJT pipe Qjb2
Even, the collector of NPN type BJT pipe Qjb2 is connected with the base stage of one end of resistance Qjb10 and NPN type BJT pipe Qjb3 simultaneously,
The collector of NPN type BJT pipe Qjb3 is connected with one end of resistance Rjb11, and the other end of resistance Rjb11 is another with resistance Rjb6's
End is connected, and the emitter of NPN type BJT pipe Qjb3 is connected with one end of resistance Rjb12, the other end and resistance of resistance Rjb12
The other end of one end of Rjb7, the emitter of NPN type BJT pipe Qjb2 and resistance Rjb9 is connected, the other end of resistance Rjb10 with
The anode of diode Djb4 is connected.
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Effective date of registration: 20210108 Address after: No. 168, Jinghua Road, high tech Zone, Ningbo City, Zhejiang Province Patentee after: NINGBO NINGBIAN POWER TECHNOLOGY Co.,Ltd. Address before: The city Zhaohui six districts Chao Wang Road Hangzhou City, Zhejiang province 310014 18 Patentee before: ZHEJIANG University OF TECHNOLOGY |