CN109546759A - Current harmonics elimination circuit - Google Patents
Current harmonics elimination circuit Download PDFInfo
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- CN109546759A CN109546759A CN201811603968.8A CN201811603968A CN109546759A CN 109546759 A CN109546759 A CN 109546759A CN 201811603968 A CN201811603968 A CN 201811603968A CN 109546759 A CN109546759 A CN 109546759A
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- adjustable module
- adjustable
- module
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- inductance
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- 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
- H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
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- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The embodiment of the present application provides a kind of current harmonics elimination circuit, comprising: first structure circuit and the second structural circuit；The first structure circuit and second structural circuit are connected in series；The first structure circuit includes induction reactance adjustable module and capacitive reactance adjustable module, and the induction reactance adjustable module is connected in series or in parallel with the capacitive reactance adjustable module；Second structural circuit includes shunt capacitance and magnetic coupling coil, the shunt capacitance and the magnetic coupling parallel connection of coil；The capacitor value of the induction reactance value of the induction reactance adjustable module and/or the capacitive reactance adjustable module is adjustable, so that the capacitor value of the induction reactance value of the induction reactance adjustable module, the capacitor value of the capacitive reactance adjustable module and the shunt capacitance meets condition of resonance.Current harmonics elimination circuit provided by the embodiments of the present application can be used in wireless energy transfer system, may be implemented to improve the inhibitory effect to triple harmonic current, and improve the efficiency of transmission of electric energy.
Description
[technical field]
This application involves wireless charging technical field more particularly to a kind of current harmonics elimination circuits.
[background technique]
Electric car has lower environmental pollution, while can preferably solve the problems, such as fossil energy shortage, therefore
It is a very important link in low-carbon economy.The charging of electric car is always research hotspot, with the hair of electric car
Exhibition, the charging modes of convenient multiplicity are becoming increasingly popular.Electric car mostly uses wired charging formula at present, in the rainy day, high humidity day
Gas, it may appear that decreasing insulating.Wired charging has electrical contact simultaneously, and hot plugging can generate electric spark, and frequent plug is filled
Plug, socket are easy to happen mechanical wear, and time long easy aging.And wireless power transmission technology is easy to use, peace
Entirely, and contactless loss, mechanical wear and corresponding maintenance issues.Therefore wireless charging technology electric car application by
More and more concerns.
Compensation topology be automobile wireless charging important component, common compensation topology have SS, SP, LCC-LCC or
LCL-LCL etc..It is topological for LCL and LCC etc., usually there is biggish higher harmonic current, main component is triple-frequency harmonics
Electric current.Higher harmonic current will lead to inverter output current distortion, increases compensation circuit and the loss of inverse switch pipe, reduces transmission
Efficiency, but the scheme of the existing inhibition triple harmonic current proposed in the related technology to the inhibitory effect of triple harmonic current compared with
Difference, and cannot be considered in terms of the efficiency of transmission of electric energy.
[application content]
In view of this, the embodiment of the present application provides a kind of current harmonics elimination circuit, improved with realizing to triple-frequency harmonics
The inhibitory effect of electric current, and improve the efficiency of transmission of electric energy.
On the one hand, the embodiment of the present application provides a kind of current harmonics elimination circuit, comprising: first structure circuit and the second knot
Structure circuit；The first structure circuit and second structural circuit are connected in series；The first structure circuit includes that induction reactance can
Mode transfer block and capacitive reactance adjustable module, the induction reactance adjustable module are connected in series or in parallel with the capacitive reactance adjustable module；Described
Two structural circuits include shunt capacitance and magnetic coupling coil, the shunt capacitance and the magnetic coupling parallel connection of coil；It is described
The capacitor value of the induction reactance value of induction reactance adjustable module and/or the capacitive reactance adjustable module is adjustable, so that the induction reactance adjustable module
The capacitor value of induction reactance value, the capacitor value of the capacitive reactance adjustable module and the shunt capacitance meets condition of resonance.
Wherein in a kind of concrete implementation mode, second structural circuit further includes compensating electric capacity；The electricity in parallel
Hold and the magnetic coupling parallel connection of coil include: the magnetic coupling coil and the compensating electric capacity series connection and then with
The shunt capacitance is connected in parallel.
Wherein in a kind of concrete implementation mode, the capacitive reactance adjustable module includes adjustable electric perhaps capacitance matrix.
Wherein in a kind of concrete implementation mode, the induction reactance adjustable module includes controllable impedance or inductance matrix.
Wherein in a kind of concrete implementation mode, the capacitive reactance adjustable module includes single capacitor adjustable module；Or
Person, the capacitive reactance adjustable module include the adjustable submodule of at least two capacitors；Alternatively, the capacitive reactance adjustable module is by least one
Capacitor fixed module is in series or in parallel to form at least one inductance adjustable module；Alternatively, the capacitive reactance adjustable module is by least
One capacitor is in series or in parallel to form at least one inductance, the capacitance of at least one capacitor and/or described at least one
The inductance value of a inductance is adjustable.
Wherein in a kind of concrete implementation mode, the induction reactance adjustable module includes single induction reactance adjustable module；Or
Person, the induction reactance adjustable module include the adjustable submodule of at least two inductance；Alternatively, the induction reactance adjustable module is by least one
Inductance fixed module is in series or in parallel to form at least one induction reactance adjustable module；Alternatively, the induction reactance adjustable module is by least
One capacitor is in series or in parallel to form at least one inductance, the capacitance of at least one capacitor and/or at least one electricity
The inductance value of sense is adjustable.
Wherein in a kind of concrete implementation mode, the induction reactance adjustable module is connected or simultaneously with the capacitive reactance adjustable module
Connection connection includes: that the induction reactance adjustable module includes single inductance adjustable module, and the capacitive reactance adjustable module includes at least two
A adjustable submodule of capacitor, the single inductance adjustable module and the adjustable submodule serial or parallel connection of at least two capacitor
Connection；Alternatively, the induction reactance adjustable module includes the adjustable submodule of at least two inductance, the capacitive reactance adjustable module includes single
Capacitor adjustable module, the adjustable submodule of at least two inductance and the single capacitor adjustable module serial or parallel connection connect
It connects；Alternatively, the induction reactance adjustable module includes the adjustable submodule of at least two inductance, the capacitive reactance adjustable module includes at least two
A adjustable submodule of capacitor, the adjustable submodule of at least two inductance connect with the adjustable submodule of at least two capacitors or
It is connected in parallel.
Wherein in a kind of concrete implementation mode, the induction reactance adjustable module and the capacitive reactance adjustable module are positioned at described
Shunt capacitance it is ipsilateral；Alternatively, the induction reactance adjustable module and the capacitive reactance adjustable module are located at the two sides of the shunt capacitance,
It include: the side that the induction reactance adjustable module is located at the shunt capacitance, the capacitive reactance adjustable module is located at the shunt capacitance
The other side；Or a part of the induction reactance adjustable module is located at the side of the shunt capacitance, the induction reactance adjustable module
Another part and the capacitive reactance adjustable module be located at the other side of the shunt capacitance；Or the one of the capacitive reactance adjustable module
Part is located at the side of the shunt capacitance, and another part of the capacitive reactance adjustable module and the induction reactance adjustable module are located at institute
State the other side of shunt capacitance；Or a part of the induction reactance adjustable module and a part of the capacitive reactance adjustable module are located at
Another part of the side of the shunt capacitance, another part of the induction reactance adjustable module and the capacitive reactance adjustable module is located at
The other side of the shunt capacitance.
Wherein in a kind of concrete implementation mode, the impedance of the first structure circuit is in perception at fundamental wave, and
Induction reactance of the first structure circuit at fundamental wave is fixed, induction reactance of the first structure circuit at fundamental wave with it is described it is in parallel electricity
The capacitive reactance of appearance resonance at fundamental wave；Under higher hamonic wave, the impedance of the first structure circuit changes, and the first structure
The impedance adjustable of circuit.
Wherein in a kind of concrete implementation mode, the current harmonics elimination circuit for magnetic coupling primary side or
Secondary side carries out harmonics restraint.
[Detailed description of the invention]
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in the embodiment attached
Figure is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, for this field
For those of ordinary skill, without any creative labor, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 (a) is the structural schematic diagram of LCL topology in the prior art；
Fig. 1 (b) is the structural schematic diagram of LCC topology in the prior art；
Fig. 2 (a)~Fig. 2 (b) is the structural schematic diagram of triple harmonic current suppression circuit in the prior art；
Fig. 3 is the structural schematic diagram of the application current harmonics elimination circuit one embodiment；
Fig. 4 is the structural schematic diagram of another embodiment of the application current harmonics elimination circuit.
[specific embodiment]
In order to better understand the technical solution of the application, the embodiment of the present application is retouched in detail with reference to the accompanying drawing
It states.
It will be appreciated that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.Base
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
Its embodiment, shall fall in the protection scope of this application.
The term used in the embodiment of the present application is only to be not intended to be limiting merely for for the purpose of describing particular embodiments
The application.In the embodiment of the present application and the "an" of singular used in the attached claims, " described " and "the"
It is also intended to including most forms, unless the context clearly indicates other meaning.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, indicate
There may be three kinds of relationships, for example, A and/or B, can indicate: individualism A, exist simultaneously A and B, individualism B these three
Situation.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
It will be appreciated that though XXX may be described in the embodiment of the present application using term first, second, third, etc., but
These XXX should not necessarily be limited by these terms.These terms are only used to for XXX being distinguished from each other out.For example, implementing not departing from the application
In the case where example range, the first XXX can also be referred to as the 2nd XXX, and similarly, the 2nd XXX can also be referred to as the first XXX.
Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination " or " in response to detection ".Similarly, depend on context, phrase " if it is determined that " or " if detection
(condition or event of statement) " can be construed to " when determining " or " in response to determination " or " when the detection (condition of statement
Or event) when " or " in response to detection (condition or event of statement) ".
It is situated between by taking LCC and LCL circuit topology as an example to current harmonics elimination circuit provided by the embodiments of the present application below
It continues.
Fig. 1 (a) is the structural schematic diagram of LCL topology in the prior art, and Fig. 1 (b) is the structure of LCC topology in the prior art
Schematic diagram.
In LCL topology and LCC topology, Lf1And Cf1Meet relationship shown in formula (1):
In LCL topology and LCC topology, harmonic current Producing reason is as follows: primary side input voltage is square-wave voltage, side
Wave voltage can use Fourier expansion: 85kHz sinusoidal voltage+255kHz sinusoidal voltage+425kHz sinusoidal voltage+...；Width
Value corresponds to 1:1/3:1/5 ...
For 5 subharmonic (425kHz) voltage, amplitude only has the 1/5 of fundamental wave (85kHz) sinusoidal voltage, and primary circuit exists
Impedance when 425kHz is far longer than the impedance in 85kHz, so quintuple harmonics electric current very little, can ignore substantially.Similarly, 5
The secondary above harmonic current is smaller.To sum up, 5 times and the above harmonic current, can ignore.
For triple-frequency harmonics (255kHz) voltage, amplitude is the 1/3 of 85kHz sinusoidal voltage, and primary impedance is in 255kHz
It is close with impedance when 85kHz, in some instances it may even be possible to it is smaller, so triple harmonic current is very big, cannot ignore.
Fig. 2 (a)~Fig. 2 (b) is the structural schematic diagram of triple harmonic current suppression circuit in the prior art, by taking LCL as an example,
In triple harmonic current suppression circuit shown in Fig. 2 (a), level-one LC cascaded structure, and L are increased1And C1Meet shown in formula (2)
Relationship:
In formula (2), L1For the inductance value of series inductance, C1For the capacitance of series capacitance, ω is angular frequency, the π of ω=2 f, f
For switching frequency, usually 85kHz.Due to L1And C1Impedance at fundamental wave (85kHz) and substantially zeroed, so to fundamental wave electricity
It flows without influence, and L1And C1Impedance is gradually increased with frequency increase, and at triple-frequency harmonics (255kHz), impedance is very big, so three
The electric current that subharmonic voltage generates in circuit is with regard to very little, to reach the inhibiting effect to triple harmonic current.
Further, L1And Lf1It can be merged into an inductance Lf, shown in circuit structure such as Fig. 2 (b) after merging, meet
Relationship shown in formula (3):
Since the impedance of LCL triple-frequency harmonics is by magnetic coupling offset and load effect, so using the fixed L and C of parameter, it is right
Difference offset and load are difficult to all reach optimal inhibitory effect.Meanwhile increased L and C can also generate certain loss, select
If parameter is fixed, it is also difficult to it is best to reach efficiency in different offsets and load.
The application is by being arranged to Parameter adjustable module for L and C, and under different offsets and loading condition, L and C be not using
So as to improve the inhibitory effect to triple harmonic current, and the efficiency of transmission of electric energy can be improved in same parameter.
Fig. 3 is the structural schematic diagram of the application current harmonics elimination circuit one embodiment, above-mentioned current harmonics elimination electricity
Road can be used in wireless energy transfer system, as shown in figure 3, above-mentioned current harmonics elimination circuit includes: first structure circuit
31 and second structural circuit 32；First structure circuit 31 and the second structural circuit 32 are connected in series；
Wherein, first structure circuit 31 includes induction reactance adjustable module 311 and capacitive reactance adjustable module 312, induction reactance adjustable module
311 are connected in series or in parallel with capacitive reactance adjustable module 312；In Fig. 3, gone here and there with induction reactance adjustable module 311 and capacitive reactance adjustable module 312
Connection is connected as exemplifying, but the present embodiment is not construed as limiting this, and induction reactance adjustable module 311 and capacitive reactance adjustable module 312 can also be simultaneously
Connection connection.
Second structural circuit 32 includes shunt capacitance 321 and magnetic coupling coil 322, shunt capacitance 321 and magnetic coupling coil
322 are connected in parallel；
In the present embodiment, the induction reactance value of induction reactance adjustable module 311 and/or the capacitor value of capacitive reactance adjustable module 312 are adjustable, with
Meet the capacitor value of the induction reactance value of induction reactance adjustable module 311, the capacitor value of capacitive reactance adjustable module 312 and shunt capacitance 321 humorous
Vibration condition.Specifically, the induction reactance value of induction reactance adjustable module 311, the capacitor value of capacitive reactance adjustable module 312 and shunt capacitance 321
Capacitor value meets relational expression shown in formula (4).
Fig. 4 is the structural schematic diagram of another embodiment of the application current harmonics elimination circuit, as shown in figure 4, this implementation
In example, the second structural circuit 32 can also include compensating electric capacity 323；In this way, shunt capacitance 321 and magnetic coupling coil 322 are in parallel
Connection can be with are as follows: magnetic coupling coil 322 and the series connection of compensating electric capacity 323 and then is connected in parallel with shunt capacitance 323.
In the current harmonics elimination circuit that the application Fig. 3 and Fig. 4 are provided, when deviating or load changes, pass through tune
Save the induction reactance of induction reactance adjustable module 311 and the capacitive reactance of capacitive reactance adjustable module 312, so that it may which optimal is reached to triple harmonic current
Inhibitory effect.Also, under conditions of meet demand, by the induction reactance and capacitive reactance adjustable module that adjust induction reactance adjustable module 311
312 capacitive reactance can find a Best Point on inhibiting harmonic current and the efficiency of transmission for improving electric energy.
In the current harmonics elimination circuit that the application Fig. 3 and Fig. 4 are provided, capacitive reactance adjustable module 312 can pass through adjustable electric
Perhaps capacitance matrix is realized, induction reactance adjustable module 311 can be realized by controllable impedance or inductance matrix.
Above-mentioned capacitive reactance adjustable module 312 can be realized by single capacitor adjustable module；Alternatively, passing through at least two electricity
Hold adjustable submodule to realize；Alternatively, capacitive reactance adjustable module 312 can be by least one capacitor fixed module and at least one inductance
Adjustable module is in series or in parallel to form；Alternatively, capacitive reactance adjustable module 312 can be by least one capacitor and at least one inductance string
The inductance value of connection or composition in parallel, the capacitance of at least one above-mentioned capacitor and/or at least one above-mentioned inductance is adjustable.
Above-mentioned induction reactance adjustable module 311 can be realized by single induction reactance adjustable module；Alternatively, passing through at least two electricity
Feel adjustable submodule to realize；Alternatively, induction reactance adjustable module 311 can be by least one inductance fixed module and at least one induction reactance
Adjustable module is in series or in parallel to form；Alternatively, induction reactance adjustable module 311 can be by least one capacitor and at least one inductance string
Connection or composition in parallel, the capacitance of at least one above-mentioned capacitor and/or the inductance value of at least one inductance are adjustable.
In the current harmonics elimination circuit that the application Fig. 3 and Fig. 4 are provided, induction reactance adjustable module 311 and capacitive reactance adjustable module
312 be connected in series or in parallel can be with are as follows: induction reactance adjustable module 311 is single inductance adjustable module, and capacitive reactance adjustable module 312 wraps
Include the adjustable submodule of at least two capacitors, above-mentioned single inductance adjustable module connect with the adjustable submodule of at least two capacitors or
It is connected in parallel；
Alternatively, induction reactance adjustable module 311 includes the adjustable submodule of at least two inductance, capacitive reactance adjustable module 312 is single
Capacitor adjustable module, the above-mentioned adjustable submodule of at least two inductance is connected in series or in parallel with single capacitor adjustable module；
Alternatively, induction reactance adjustable module 311 includes the adjustable submodule of at least two inductance, capacitive reactance adjustable module 312 includes extremely
Few two adjustable submodules of capacitor, the above-mentioned adjustable submodule of at least two inductance and the adjustable submodule string of above-mentioned at least two capacitor
Join or is connected in parallel.
In the current harmonics elimination circuit that the application Fig. 3 and Fig. 4 are provided, induction reactance adjustable module 311 and capacitive reactance adjustable module
312 are located at the ipsilateral of shunt capacitance 321；Alternatively,
Induction reactance adjustable module 311 and capacitive reactance adjustable module 312 are located at the two sides of shunt capacitance 321, comprising: induction reactance adjustable die
Block 311 is located at the side of shunt capacitance 321, and capacitive reactance adjustable module 312 is located at the other side of shunt capacitance 321；Or induction reactance can
A part of mode transfer block 311 is located at the side of shunt capacitance 321, another part and capacitive reactance adjustable die of induction reactance adjustable module 311
Block 312 is located at the other side of shunt capacitance 321；Or a part of capacitive reactance adjustable module 312 is located at the one of shunt capacitance 321
Side, another part and induction reactance adjustable module 311 of capacitive reactance adjustable module 312 are located at the other side of shunt capacitance 321；Or induction reactance
A part of adjustable module 311 and a part of capacitive reactance adjustable module 312 are located at the side of shunt capacitance 321, induction reactance adjustable die
Another part of block 311 and another part of capacitive reactance adjustable module 312 are located at the other side of shunt capacitance 321.
In the current harmonics elimination circuit that the application Fig. 3 and Fig. 4 are provided, the impedance of first structure circuit 31 is at fundamental wave
Perception, and induction reactance of the first structure circuit 31 at fundamental wave is fixed, induction reactance of the first structure circuit 31 at fundamental wave with it is in parallel
The capacitive reactance of capacitor 321 resonance at fundamental wave；Under higher hamonic wave, the impedance of first structure circuit 31 changes, and first structure
The impedance adjustable of circuit 31.And during adjusting the impedance of first structure circuit 31, first structure circuit 31 is only influenced
Impedance value under higher hamonic wave, impedance value of the first structure circuit 31 at fundamental wave remain constant
The current harmonics elimination circuit that the application Fig. 3 and embodiment illustrated in fig. 4 provide can be used for the original of magnetic coupling
While or it is secondary while carry out harmonics restraint.
The current harmonics elimination circuit that the application Fig. 3 and embodiment illustrated in fig. 4 provide, by increasing level-one capacitive reactance adjustable die
Block 312, induction reactance adjustable module 311 may be implemented effectively to press down the higher harmonic current under different offsets and loading condition
System, and the efficiency of transmission of electric energy can be improved.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or group
Part can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown
Or the mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, device or unit it is indirect
Coupling or communication connection can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit being realized in the form of SFU software functional unit can store and computer-readable deposit at one
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
It is each that device (can be personal computer, server or network equipment etc.) or processor (Processor) execute the application
The part steps of embodiment the method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (Read-
Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic or disk etc. it is various
It can store the medium of program code.
The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the application protection.
Claims (10)
1. a kind of current harmonics elimination circuit characterized by comprising first structure circuit and the second structural circuit；
The first structure circuit and second structural circuit are connected in series；
The first structure circuit includes induction reactance adjustable module and capacitive reactance adjustable module, the induction reactance adjustable module and the capacitive reactance
Adjustable module is connected in series or in parallel；
Second structural circuit includes shunt capacitance and magnetic coupling coil, the shunt capacitance and the magnetic coupling coils from parallel connection of coils
Connection；
The capacitor value of the induction reactance value of the induction reactance adjustable module and/or the capacitive reactance adjustable module is adjustable, so that the induction reactance can
The capacitor value of the induction reactance value of mode transfer block, the capacitor value of the capacitive reactance adjustable module and the shunt capacitance meets condition of resonance.
2. current harmonics elimination circuit according to claim 1, which is characterized in that second structural circuit further includes mending
Repay capacitor；
The shunt capacitance and the magnetic coupling parallel connection of coil include:
The magnetic coupling coil is connected in series with the compensating electric capacity and then is connected in parallel with the shunt capacitance.
3. current harmonics elimination circuit according to claim 1, which is characterized in that the capacitive reactance adjustable module includes adjustable
Capacitor or capacitance matrix.
4. current harmonics elimination circuit according to claim 1, which is characterized in that the induction reactance adjustable module includes adjustable
Inductance or inductance matrix.
5. current harmonics elimination circuit according to claim 1 or 3, which is characterized in that the capacitive reactance adjustable module includes
Single capacitor adjustable module；Alternatively,
The capacitive reactance adjustable module includes the adjustable submodule of at least two capacitors；Alternatively,
The capacitive reactance adjustable module is by least one capacitor fixed module and at least one inductance adjustable module serial or parallel connection structure
At；Alternatively,
The capacitive reactance adjustable module is in series or in parallel to form by least one capacitor and at least one inductance, at least one described electricity
The capacitance of appearance and/or the inductance value of at least one inductance are adjustable.
6. current harmonics elimination circuit according to claim 1 or 4, which is characterized in that the induction reactance adjustable module includes
Single induction reactance adjustable module；Alternatively,
The induction reactance adjustable module includes the adjustable submodule of at least two inductance；Alternatively,
The induction reactance adjustable module is by least one inductance fixed module and at least one induction reactance adjustable module serial or parallel connection structure
At；Alternatively,
The induction reactance adjustable module is in series or in parallel to form by least one capacitor and at least one inductance, at least one described electricity
The capacitance of appearance and/or the inductance value of at least one inductance are adjustable.
7. current harmonics elimination circuit according to claim 1, which is characterized in that the induction reactance adjustable module and the appearance
Anti- adjustable module, which is connected in series or in parallel, includes:
The induction reactance adjustable module includes single inductance adjustable module, and the capacitive reactance adjustable module includes at least two capacitors can
Tune module, the single inductance adjustable module are connected in series or in parallel with the adjustable submodule of at least two capacitors；Or
Person,
The induction reactance adjustable module includes the adjustable submodule of at least two inductance, and the capacitive reactance adjustable module includes single capacitor
Adjustable module, the adjustable submodule of at least two inductance are connected in series or in parallel with the single capacitor adjustable module；Or
Person,
The induction reactance adjustable module includes the adjustable submodule of at least two inductance, and the capacitive reactance adjustable module includes at least two electricity
Hold adjustable submodule, the adjustable submodule of at least two inductance and the adjustable submodule serial or parallel connection of at least two capacitor
Connection.
8. current harmonics elimination circuit according to claim 1, which is characterized in that the induction reactance adjustable module and the appearance
Anti- adjustable module is located at the ipsilateral of the shunt capacitance；Alternatively,
The induction reactance adjustable module and the capacitive reactance adjustable module are located at the two sides of the shunt capacitance, comprising: the induction reactance can
Mode transfer block is located at the side of the shunt capacitance, and the capacitive reactance adjustable module is located at the other side of the shunt capacitance；Or institute
The a part for stating induction reactance adjustable module is located at the side of the shunt capacitance, another part of the induction reactance adjustable module and described
Capacitive reactance adjustable module is located at the other side of the shunt capacitance；Or a part of the capacitive reactance adjustable module is located at the parallel connection
The side of capacitor, another part of the capacitive reactance adjustable module and the induction reactance adjustable module are located at the another of the shunt capacitance
Side；Or a part of the induction reactance adjustable module and a part of the capacitive reactance adjustable module are located at the one of the shunt capacitance
Another part of side, another part of the induction reactance adjustable module and the capacitive reactance adjustable module is located at the another of the shunt capacitance
Side.
9. current harmonics elimination circuit according to claim 1, which is characterized in that
The impedance of the first structure circuit is in perception at fundamental wave, and induction reactance of the first structure circuit at fundamental wave is solid
It is fixed, the capacitive reactance of induction reactance of the first structure circuit at fundamental wave and shunt capacitance resonance at fundamental wave；In higher hamonic wave
Under, the impedance of the first structure circuit changes, and the impedance adjustable of the first structure circuit.
10. current harmonics elimination circuit according to claim 1, which is characterized in that the current harmonics elimination circuit is used
Harmonics restraint is carried out in the primary side of magnetic coupling or secondary side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811603968.8A CN109546759A (en) | 2018-12-26 | 2018-12-26 | Current harmonics elimination circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811603968.8A CN109546759A (en) | 2018-12-26 | 2018-12-26 | Current harmonics elimination circuit |
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| CN109546759A true CN109546759A (en) | 2019-03-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113972754A (en) * | 2021-11-19 | 2022-01-25 | 宁波道充科技有限公司 | Series-parallel compensation wireless power transmission coil structure |
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