CN209419476U - Irregular ripple active compensation circuit and power supply system - Google Patents
Irregular ripple active compensation circuit and power supply system Download PDFInfo
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Abstract
A kind of irregular ripple active compensation circuit and power supply system；The irregular ripple active compensation circuit includes: synchronous rectification module, the first sampling module, the second sampling module, ripple processing module, signal generating module and signal modulation module；Synchronous rectification module synchronizes rectification and export according to the first driving signal and the second driving signal to DC power supply has and interferes in power supply the opposite polarity thermal compensation signal of ripple；First sampling module acquires thermal compensation signal in real time and obtains current sampling signal；The AC ripple of second sampling module acquisition power supply；The first driving signal and the second driving signal of two-way complementation are obtained after carrying out processing modulation to current sampling signal and AC ripple, change the working condition of synchronous rectification module by the first driving signal and the second driving signal, so that thermal compensation signal can realize adjustment effect to the interference ripple in power supply.
Description
Technical field
The utility model belongs to electronic technology field more particularly to a kind of irregular ripple active compensation circuit and power supply system
System.
Background technique
Power supply ripple refers to the phenomenon that presence fluctuation in the voltage/current of power supply output, in actual application, surely
Fixed power supply is usually formed after the links such as steady pressure treatment by AC power source, therefore in this process, power supply output
There will be alternating component in voltage/current, this alternating component will will lead to the unstable of electric system, can not be defeated to power supply
Voltage/current out is accurately measured, and then the electric energy that electronic component is accessed is easy to appear peak current/spike electricity
Pressure, power equipment are in extremely unstable working condition, and serious power supply ripple even can cause electric power safety accident, limit
The application range of power supply.
Since there are ripples in the current/voltage of power supply output, causes the precision of power supply output electric energy lower, electricity can not be made
Sub- equipment is in specified working condition；In the conventional technology, on the one hand, it is discrete when the A/D sampling of power supply digital, it is restricted
In factors such as sampling periods, A/D sampling rate generally can only achieve several KHz to more than ten KHz, and such ripple detection accuracy can only
Frequency is enough depicted in one two hundred Hz simple envelope waveform below, and for the waveform of 200Hz or more, high frequency, traditional
Technology gets over the true phase that cannot completely depict power supply ripple, therefore cannot for numerically controlled ripple Acquisition Circuit
High-frequency current signal needed for reduction in real time, is distorted the signal of acquisition, can not efficiently control in power supply output electric energy
True ripple；On the other hand, since there are a plurality of types of current ripples signals in the electric energy of power supply output, wherein the electric current
Ripple signal includes high-frequency ac ingredient and low-frequency ac ingredient etc., and traditional technology carries out the current ripples signal in power supply
During processing, the stability of flip-flop and low-frequency ac ingredient in power supply is also influenced whether, generate certain electric energy damage
Consumption, influences the overall quality of power supply.
In conclusion since traditional technology can not carry out accurate sampling of classifying to the high frequency ripple in current ripples signal,
And the irregular ripple medium-high frequency ripple in power supply can not be adjusted, the problem for causing the precision of power supply lower.
Utility model content
In view of this, the utility model embodiment provides a kind of irregular ripple active compensation circuit and power supply system,
Aim to solve the problem that the high frequency ripple signal in irregular ripple can not be adjusted in traditional technical solution, the electricity of power supply output
Pressure/current precision is lower, and for the power supply for causing power supply to export there are irregular AC influence component, electric system is unstable, difficult
With blanket problem.
The first aspect of the utility model embodiment provides a kind of irregular ripple active compensation circuit, with power supply
Connection, the irregular ripple active compensation circuit include:
Power input terminates DC power supply, accesses the first driving signal and the second driving signal, is configured as according to first
Output has and the power supply electricity after driving signal and the second driving signal synchronize rectification to the electric energy of the DC power supply
The synchronous rectification module of the opposite polarity thermal compensation signal of ripple is interfered in source；
It is connect with the synchronous rectification module, is configured as being sampled to obtain current sample letter to the thermal compensation signal
Number the first sampling module；
It is connect with the power supply, is configured as acquiring the second sampling module of the AC ripple of the power supply；
It connect, is configured as to the AC ripple and institute with first sampling module and second sampling module
Current sampling signal is stated to be handled to obtain the ripple processing module of the first ripple signal；
It is configurable to generate the signal generating module of triangular signal；And
It connect, is configured as to institute with the ripple processing module, the signal generating module and synchronous rectification module
It states the first ripple signal and the triangular signal is modulated first driving signal for generating two-way complementation and described the
The signal modulation module of two driving signal.
In one of them embodiment, the interference ripple includes: the AC ripple medium-high frequency line of the power supply
Wave and harmonic wave.
In one of them embodiment, the irregular ripple active compensation circuit further include:
Be connected between second sampling module and the ripple processing module, be configured as to the AC ripple into
The filter module of row high-pass filtering.
In one of them embodiment, the ripple processing module includes:
It is connect with first sampling module, is configured as carrying out the current sampling signal in the first letter of ratio enlargement
Number amplifier；
It is connect with second sampling module, is configured as carrying out ratio enlargement to the AC ripple of the power supply
Second signal amplifier；
It is connect with first signal amplifier and second signal amplifier, is configured as the amplified electricity of comparative example
Stream sampled signal is added to obtain the adder of the first ripple signal with the AC ripple after ratio enlargement；And
It is connected between the adder and the signal modulation module, is configured as carrying out first ripple signal
The inverting integrator of reverse phase integral.
In one of them embodiment, the irregular ripple active compensation circuit further include:
It is connected between the signal modulation module and the synchronous rectification module, is configured as to the first driving letter
Number carry out PWM rectification the first PWM drive circuit；
It is connected between the signal modulation module and the synchronous rectification module, is configured as to the second driving letter
Number carry out PWM rectification the second PWM drive circuit.
In one of them embodiment, the synchronous rectification module includes:
Power input terminates the DC power supply, is configured as carrying out common-mode signal inhibition to the electric energy of the DC power supply
Common mode inhibition unit；
Control terminal accesses first driving signal, and the first conducting terminates the first power supply output of the common mode inhibition unit
End is configured as the first switch unit for being connected or turning off according to first driving signal；
Control terminal accesses second driving signal, and the second conducting terminates the second source output of the common mode inhibition unit
End is configured as the second switch unit for being connected or turning off according to second driving signal；
Wherein the second conduction terminal of the first switch unit and the first conduction terminal of the second switch unit connect altogether, with
Export the first AC signal；
One end is connect with the first conduction terminal of the second conduction terminal of the first switch unit and second switch unit, another
End and first sampling module are configured as carrying out first AC signal differentiation element of differential；And
It is connect with the other end of the differentiation element, is configured as filtering out the first AC signal after the differential
DC component and low frequency AC components are filtered out, to export the isolated location of the thermal compensation signal.
In one of them embodiment, the common mode inhibition unit includes: common mode inductance；
The first switch unit includes: first switch tube and first diode；
The second switch unit includes: second switch and the second diode；
The differentiation element includes: at least two concatenated inductance；
The isolated location includes: the capacitor of multiple parallel connections.
In one of them embodiment, the first switch tube is metal-oxide-semiconductor or IGBT, and the second switch is
Metal-oxide-semiconductor or IGBT.
In one of them embodiment, second sampling module includes current sensor.
The second aspect of the utility model embodiment provides a kind of power supply system, comprising:
Power supply, DC power supply and irregular ripple active compensation circuit as described above, the irregular ripple
Active compensation circuit is connect with the power supply and the DC power supply；
The DC power supply is adjusted in the irregular ripple active compensation circuit, so that the DC power supply exports
With the interference opposite polarity thermal compensation signal of ripple in the power supply, done by the thermal compensation signal in the power supply
It disturbs ripple and carries out counter-bonification.
Above-mentioned irregular ripple active compensation circuit is synchronized by electric energy of the synchronous rectification module to DC power supply
Rectification has with output and interferes the opposite polarity thermal compensation signal of ripple, the first sampling module and second in the power supply
Sampling module can be after the AC ripple signal respectively to thermal compensation signal and power supply be sampled and handled, to generate driving
Signal manipulates the working condition of synchronous rectification module, by the driving signal to form the inside of irregular ripple compensation circuit
Dynamical feedback circuit, the benefit of generation needed for directly adjusting synchronous rectification module according to the variable condition of AC ripple in power supply
Repay signal；Ripple is interfered in power supply to eliminate by the compensation ripple in thermal compensation signal, in the confession for not influencing power supply
On the basis of electrical property, the precision and quality of power supply are improved, control response speed is exceedingly fast, and it is applied widely, it can
For fields such as Precision Current Component design, harmonic compensation, battery detection equipments；Efficiently solving traditional technology can not be to advising
When then ripple is adjusted, it is difficult to acquire the high fdrequency component in irregular ripple, the electric energy precision for causing power supply to export is lower, surely
Qualitative and reliability is bad, the not high problem of practical value.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, for those skilled in the art, without creative efforts, can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is a kind of function structure chart of irregular ripple active compensation circuit provided by the embodiment of the utility model；
Fig. 2 is the function structure chart of another irregular ripple active compensation circuit provided by the embodiment of the utility model；
Fig. 3 is the function structure chart of another irregular ripple active compensation circuit provided by the embodiment of the utility model；
Fig. 4 is the function structure chart of another irregular ripple active compensation circuit provided by the embodiment of the utility model；
Fig. 5 is the function structure chart of another irregular ripple active compensation circuit provided by the embodiment of the utility model；
Fig. 6 is a kind of circuit structure diagram of synchronous rectification module provided by the embodiment of the utility model；
Fig. 7 is a kind of implementation flow chart of irregular ripple New Method of Active Electronic Compensation provided by the embodiment of the utility model；
Fig. 8 is a kind of function structure chart of power supply system provided by the embodiment of the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Fig. 1 shows the modular structure of irregular ripple active compensation circuit 10 provided by the embodiment of the utility model,
In, the irregular active compensation circuit 10 is connect with power supply 20, when 20 output voltage/electric current of power supply, is not advised
Then active compensation circuit 10 can obtain irregular ripple information, and realize counter-bonification effect to the irregular ripple, filter out
Interference ripple in power supply 20 greatly improves the precision of power supply 20, and the irregular ripple in the present embodiment has
Source compensation circuit 10 can be using in each industrial circle, and practical value is high；For ease of description, it illustrates only practical new with this
The relevant part of type embodiment, details are as follows:
The irregular ripple active compensation circuit 10 includes: synchronous rectification module 101, the first sampling module 102, second
Sampling module 103, ripple processing module 104, signal generating module 105 and signal modulation module 106.
Wherein, the power input of synchronous rectification module 101 terminates DC power supply 30, the access of synchronous rectification module 101 first
Driving signal and the second driving signal, synchronous rectification module 101 is according to the first driving signal and the second driving signal to direct current
Output has and interferes the opposite polarity thermal compensation signal of ripple in power supply 20 after the electric energy in source 30 synchronizes rectification.
The power supply 20 can export electric energy, load can be driven to realize corresponding circuit function by the electric energy；
And there is interference ripple in the electric energy that the power supply 20 exports, the electricity which will will lead to power supply 20 and export
There can be unstable phenomenon, loading accessed electric energy will appear biggish fluctuation；Pass through the whole of synchronous rectification module 101
Stream output end can export thermal compensation signal, the compensation ripple in thermal compensation signal and interference ripple there are opposite polarity relationship, when
When the main power circuit of power supply 20 accesses the thermal compensation signal, interference ripple can be eliminated by the compensation ripple, to reduce
The fluctuation of electric energy in power supply 20, improves the precision and quality of power supply 20.
As a kind of specific embodiment, the synchronous rectification module 101 can change the exported electric energy of DC power supply
Amplitude and polarity, the working condition of synchronous rectification module 101 can be changed by the first driving signal and the second driving signal, can
Choosing, when the first driving signal and the second driving signal are respectively at different level states, synchronous rectification module 101
It is exportable that there is opposed polarity and amplitude compensation ripple after rectification capable of being synchronized to DC power supply, to realize for supplying
The counter-bonification effect of the interference ripple of power supply 20；Therefore the irregular ripple active compensation circuit 10 in the present embodiment being capable of benefit
The interference ripple in power supply 20 is adjusted with synchronous rectification module 101, easy to operate, compatibility is extremely strong, effectively
Ground improves irregular ripple active compensation circuit 10 for the control response speed of power supply 20.
First sampling module 102 is connect with synchronous rectification module 101, and the first sampling module 102 adopts thermal compensation signal
Sample obtains a current sampling signal.
Wherein, the first sampling module 102 can monitor the thermal compensation signal of the output of synchronous rectification module 101, and institute in real time
It states the first sampling module 102 and generates current sampling signal, synchronous rectification module 101 can be obtained by the current sampling signal
Working condition improves the controllability of the irregular ripple active compensation circuit 10, the irregular ripple active compensation
Circuit 10 has high control response speed, and the sampling precision of thermal compensation signal is higher.
Second sampling module 103 is connect with power supply 20, and the second sampling module 103 acquires the friendship of the power supply 20
Flow liner wave；
AC ripple in the power supply 20 is irregular, and voltage/electricity that power supply 20 is exported
The fluctuation of stream is very big, and the present embodiment can acquire the current fluctuation in power supply 20 by the second sampling module 103 in real time
Information can monitor the energy fluctuation situation in power supply 20 by second sampling module 103, and the precision of acquisition is high；
The irregular ripple active compensation circuit 10 can be obtained by the second sampling module 103 and really be exchanged in power supply 20
Ripple, and then irregular ripple active compensation circuit 10 can filter out the interference ripple in power supply 20 in time, improve this
In embodiment irregular ripple active compensation circuit 10 in power supply 20 interfere ripple information compensation precision, irregularly
The control performance of ripple active compensation circuit 10 is more preferably.
As an alternative embodiment, second sampling module 103 includes current sensor, wherein electric current passes
Sensor can accurately detect the change information of electric energy in power supply 20, can obtain power supply in real time by current sensor
The AC ripple of power supply 20, low in energy consumption, sampling rate is exceedingly fast；Therefore this implementation can greatly improve friendship by current sensor
The sampling precision of flow liner wave reduces the ripple sampling cost of power supply 20, ensures irregular ripple active compensation circuit 10
In control accuracy, power supply 20 export electric energy stability it is stronger.
Ripple processing module 104 is connect with the first sampling module 102 and the second sampling module 103, ripple processing module
104 pairs of AC ripples and current sampling signal are handled to obtain the first ripple signal.
AC ripple is transmitted to ripple processing module 104 by the second sampling module 103, and the first sampling module 102 is by electric current
Sampled signal is transmitted to ripple processing module 104, can be adopted interference ripple information and electric current by the ripple processing module 104
The information of sample signal is merged, to obtain the first ripple signal；It can be obtained in thermal compensation signal according to first ripple signal
Ripple information and power supply 20 in ripple information, it is right to help irregular ripple active compensation circuit 10 in this present embodiment
The real-time control ability of AC ripple in power supply 20 is realized for interfering ripple accurately to be adjusted in power supply 20
Section, ripple processing module 104 have complete signal processing analysis ability, accelerate irregular ripple active compensation circuit 10
Dynamic feedback control rate, irregular ripple active compensation circuit 10 have the wider scope of application.
Signal generating module 105 generates triangular signal.
Wherein, the triangular signal has different frequency and amplitude, optionally, the frequency and width of the triangular signal
Value can carry out preparatory according to the working condition of the frequency of first ripple signal, amplitude and the synchronous rectification module 101
Setting；Irregular ripple active compensation circuit 10 can be made to be in different working conditions by the triangular signal, realize phase
The circuit function answered；Signal generating module 105 can provide different frequency informations to irregular ripple active compensation circuit 10,
Irregular ripple active compensation circuit 10 realizes optimal comprehensively control ability to the AC ripple in power supply 20, so that not
The control stability of regular ripple active compensation circuit 10 is stronger, and dynamical feedback performance more preferably, improves in power supply 20
Stable electric power and accuracy.
Signal modulation module 106 and ripple processing module 104, signal generating module 105 and synchronous rectification module 101 connect
It connects, signal modulation module 106, which is modulated the first ripple signal and triangular signal, generates the first complementary driving letter of two-way
Number and the second driving signal.
Wherein, the signal modulation module 106 can be realized the function of modulation to signal, when ripple processing module 104 will
First ripple signal is transmitted to signal modulation module 106, and triangular signal is transmitted to signal modulation mould by signal generating module 105
Block 106 can generate the complementary PWM wave of two-way isolation, i.e. the first driving signal and the second driving by signal modulation module 106
Signal；Optionally, the phase cross-over of first driving signal and second driving signal；Signal modulation module 106 is by
One driving signal and the second driving signal are transmitted to synchronous rectification module 101, pass through the first driving signal and the second driving signal
The working condition of synchronous rectification module 101 is adjusted, to form feedback control；To the signal modulation module 106 in the present embodiment
Required PWM wave can be generated, so that the thermal compensation signal that synchronous rectification module 101 exports can be to the interference in power supply 20
Ripple carries out counter-bonification, has ensured that power supply 20 exports the stability of electric energy.
It, can be real by the first sampling module 102 in irregular ripple active compensation circuit 10 provided in this embodiment
When detect the working condition of synchronous rectification module 101, and according to thermal compensation signal come the work of feedback regulation synchronous rectification module 101
State, so that the compensation ripple in output thermal compensation signal passes through synchronous rectification module close to the interference ripple in power supply 20
The electric energy of DC power supply 30 is rectified into and interferes the opposite polarity thermal compensation signal of ripple by 101, passes through the compensation in thermal compensation signal
Ripple can filter out the interference ripple in power supply 20 completely, ensure the stability of power supply 20；To which the present embodiment is logical
True AC ripple information in power supply 20 can in real time, accurately be acquired by crossing irregular ripple compensation circuit 10, and be led to
It crosses after carrying out processing analysis for AC ripple information, dynamic feedback compensation ripple.The irregular ripple compensation circuit 10 has
Have good control effect and quickly control response speed, on the one hand, greatly improve power supply 20 precision and
Quality ensures that load has access to stable power supply electric energy always, to maintain the working condition of safety and stability；On the other hand, have
Effect ground solve traditional technology can not the high fdrequency component to power supply accurately sampled, especially for the easy production of bus control strategy
Raw biggish current ripples, the voltage/current precision for causing power supply to export is lower, so that the interference ripple signal in power supply is easy
Cause electric system unstable, power supply is difficult to blanket problem.
As an alternative embodiment, the DC power supply 30 is+500V DC power supply, can also export as needed
The operating parameter of thermal compensation signal is changed accordingly, can be exported direct current energy to synchronous rectification by the DC power supply 30
Module 101.
As an alternative embodiment, the signal generating module 105 is triangular-wave generator；Wherein triangular wave is made
For carrier signal, it is transmitted to signal modulation module 106, realizes corresponding signal modulation function.The signal modulation module 106
First driving signal and the second driving signal with connecting and disconnecting of the circuit control function are generated, so that the irregular compensation circuit 10
The interference ripple in power supply 20 can effectively be eliminated.
As an alternative embodiment, interference ripple include: power supply 20 AC ripple medium-high frequency ripple and
Harmonic wave；The irregular ripple active compensation circuit 10 can acquire the AC ripple information in power supply 20, and according to institute
State the working condition that the interference ripple in AC ripple information carrys out feedback regulation synchronous rectification module 101；Benefit in the present embodiment
It repays signal to be adjusted just for high frequency ripple and harmonic wave, and will not influence power supply 20 and export the effective of current/voltage
Value and average value；To which the irregular ripple active compensation circuit 10 can accurately control power supply 20, improve
The precision of electric energy, avoids electric energy loss additional in power supply 20 in power supply 20, so that power supply 20 exported
There is electric energy more preferably stability, the irregular ripple active compensation circuit 10 can be realized performance more for power supply 20
Good feedback control.
As an alternative embodiment, in above-mentioned irregular ripple active compensation circuit 10, the first sampling module
102 and signal modulation module 106 chip in circuit structure or traditional technology in traditional technology can be used all to realize, it is right
This is without limitation；Illustratively, the PWM modulation circuit in traditional technology can be used to realize in the signal modulation module 106, institute
Irregular active compensation circuit 10 is stated with overly simplified circuit structure.
As an alternative embodiment, Fig. 2 shows irregular ripple active compensation circuits provided in this embodiment
10 another modular structure, compared to the modular structure of ripple active compensation circuit 10 irregular in Fig. 1, not advising in Fig. 2
Then ripple active compensation circuit 10 further include: filter module 201.
Wherein, filter module 201 is connected between the second sampling module 103 and ripple processing module 104, filter module
201 pairs of AC ripples carry out high-pass filtering.
As described above, when the second sampling module 103 collects the AC ripple of power supply 20, AC ripple includes high frequency
Ripple, harmonic wave, low-frequency ripple and DC component, and the low-frequency ripple and DC component in the AC ripple will interfere not
The control performance of regular active compensation circuit 10, the thermal compensation signal for causing synchronous rectification module 101 to export influence power supply 20
The virtual value and average value of output；Therefore the present embodiment blocks the low-frequency ripple in the AC ripple by filter module 201
And DC component, the filter module 201 can export the high frequency ripple in AC ripple completely, to ensure synchronous rectification module
The thermal compensation signal of 101 outputs is controlled only for the high fdrequency component of AC ripple in power supply 20；When synchronous rectification mould
When block 101 exports thermal compensation signal, counter-bonification is carried out to the interference ripple by the compensation ripple in thermal compensation signal, was both ensured
Low frequency component and DC component in the power supply 20 are not affected, and completely eliminate the AC ripple of power supply 20
Medium-high frequency ripple and harmonic wave.
As an alternative embodiment, Fig. 3 shows irregular ripple active compensation circuit provided in this embodiment
10 another modular structure, compared to the modular structure of ripple active compensation circuit 10 irregular in Fig. 1, in fig. 3, line
Wave processing module 104 includes: the first signal amplifier 1041, second signal amplifier 1042, adder 1043 and reverse phase product
Divide device 1044.
First signal amplifier 1041 is connect with the first sampling module 102, and first sampling module 102 is by current sample
Signal is exported to the first signal amplifier 1041, and the first signal amplifier 1041 carries out ratio enlargement to current sampling signal, into
And the ripple processing module 104 can accurately obtain the working condition of synchronous rectification module 101.
Second signal amplifier 1042 is connect with the second sampling module 103, and the second sampling module 103 is by power supply 20
AC ripple is exported to second signal amplifier 1042, and second signal amplifier 1042 carries out the AC ripple of power supply 20
Ratio enlargement, and then the ripple processing module 104 can obtain the high frequency ripple information in the power supply 20.
Therefore in the present embodiment, by the first signal amplifier 1041 and second signal amplifier 1042 respectively to compensation
Ripple signal and AC ripple signal carry out ratio enlargement, to ensure compensation ripple signal and AC ripple signal in irregular grain
Effectiveness and signal transmission quality in wave active compensation circuit 10；Optionally, first signal amplifier 1041
It is different with the rate mu-factor of both second signal amplifiers 1042, corresponding ratio enlargement can be adjusted according to actual needs
Coefficient carries out feedback control for synchronous rectification module 101 according to the AC ripple of current sampling signal and power supply 20, mentions
High irregular active ripple compensation circuit 10 is for interfering the degree of regulation of ripple in power supply 20, so that the power supply
The electric energy of 20 outputs has higher stability.
Adder 1043 is connect with the first signal amplifier 1041 and second signal amplifier 1042, the amplification of the first signal
Device 1041 exports the current sampling signal after ratio enlargement to adder 1043, and second signal amplifier 1042 is by ratio enlargement
The output of the AC ripple of power supply 20 is to adder 1043, the amplified current sampling signal of 1043 comparative example of adder afterwards
It is added to obtain the first ripple signal with the AC ripple after ratio enlargement.
It should be noted that the adder 1043 is vector superposed to current sampling signal and AC ripple progress, due to
Current sampling signal and AC ripple are respectively provided with different size and Orientations, therefore by after vector sum operation, the first ripple
Signal has different phases, irregular ripple active compensation circuit 10 can be driven to realize difference by first ripple signal
Interference ripple counter-bonification function, improve the compatibility of irregular ripple active compensation circuit 10 in the present embodiment；To this
Ripple processing module 104 can be according to the working condition of synchronous rectification module 101 and exchanging in power supply 20 in embodiment
Ripple information carrys out the phase of synchronous change thermal compensation signal, improves the dynamical feedback precision of irregular active compensation circuit 10.
Inverting integrator 1044 is connected between adder 1043 and signal modulation module 106, and inverting integrator 1044 is right
First ripple signal carries out reverse phase integral.
Wherein, the inverting integrator 1044 can adjust offset voltage/offset current in the first ripple signal
It is whole, to pass through the first ripple signal energy to the first ripple signal integral compensation to improve the precise control of the first ripple signal
Enough accurately acquire the interference of the energy fluctuation information and power supply 20 in the compensation ripple of the output of synchronous rectification module 101
Ripple information can be improved the feedback control efficiency of irregular ripple active compensation circuit 10 by the first ripple signal；Work as letter
When number modulation module 106 receives first ripple signal, signal modulation module 106 can generate corresponding first driving signal and
Second driving signal can be realized the feedback for synchronous rectification module 101 by the first driving signal and the second driving signal
Control, so that the antipodal thermal compensation signal of interference ripple polarity of synchronous rectification module 101 output and power supply 20, is improved
The stable electric power that power supply 20 exports.
Therefore, it is shown in Fig. 3 go out ripple processing module 104, ripple processing module 104 includes four circuit units (the
One signal amplifier 1041, second signal amplifier 1042, adder 1043 and inverting integrator 1044), at ripple
After reason module 104 is analyzed and processed AC ripple and compensation ripple signal, the transmission quality of the first ripple signal is improved
And control performance, to drive irregular ripple active compensation circuit 10 to can be realized accurate dynamic feedback control；Synchronous rectification
Module 101 generates thermal compensation signal according to the AC ripple information in power supply 20, passes through the compensation ripple energy in thermal compensation signal
The interference ripple in power supply 20 is enough filtered out, irregular ripple active compensation circuit 10 has more preferably control performance.
As an alternative embodiment, Fig. 4 shows irregular ripple active compensation circuit provided in this embodiment
10 another modular structure, compared to the modular structure of ripple active compensation circuit 10 irregular in Fig. 1, not advising in Fig. 4
Then ripple active compensation circuit 10 further include: the first PWM (Pulse Width Modulation, pulse width modulation) driving electricity
Road 401 and the second PWM drive circuit 402.
Wherein, the first PWM drive circuit 401 is connected between signal modulation module 106 and synchronous rectification module 101, the
One PWM drive circuit 401 carries out PWM rectification to the first driving signal.
Second PWM drive circuit 402 is connected between signal modulation module 106 and synchronous rectification module 101, the 2nd PWM
Driving circuit 402 carries out PWM rectification to the second driving signal.
As described above, the first driving signal and the second driving signal can be realized connecting and disconnecting of the circuit control, so that synchronous rectification
Module 101 can be realized the function of electric energy conversion, and irregular ripple active compensation circuit 10 is made to be in stable working condition；
PWM drive circuit (including the first PWM drive circuit 401 and second PWM drive circuit 402) carries out pulsewidth modulation to driving signal
And export, so that the first driving signal and the second driving signal after PWM rectification have complementary amplitude and pulse width, and
It prevents the first driving signal and the second driving signal in transmission process by the interference of outside noise, causes to control error；When
When the first driving signal and the second driving signal of the control terminal access isolation complementation of synchronous rectification module 101, synchronous rectification mould
Block 101 realizes corresponding electric energy conversion function according to driving signal (including the first driving signal and second driving signal), synchronous
Rectification module 101 can generate thermal compensation signal more accurately, to realize the counter-bonification effect of the interference ripple of power supply 20；
To the present embodiment by the first PWM drive circuit 401 and the second PWM drive circuit 402 can to synchronous rectification module 101 into
Row controls precisely in real time, realizes the design of precision voltage source.
It should be noted that in attached drawing 2, attached drawing 3 and attached drawing 4, filter module 201, the first signal amplifier 1041,
Second signal amplifier 1042, adder 1043, inverting integrator 1044, the first PWM drive circuit 401 and the 2nd PWM drive
The chip in circuit structure or traditional technology in traditional technology can be used all to realize in dynamic circuit 402, does not limit this；
Illustratively, the signal amplification circuit in traditional technology can be used to realize in first signal amplifier 1041, wherein described
Signal amplification circuit includes: the electronic components such as operational amplifier, resistance, using operational amplifier for current sampling signal into
The accurate ratio enlargement of row believes current sample by signal amplification circuit by changing the open-loop gain of signal amplification circuit
Number realize different amplification factor；Therefore irregular having for active compensation circuit 10 controls compatibility in the present embodiment.
As an alternative embodiment, Fig. 5 shows irregular ripple active compensation circuit provided in this embodiment
10 another modular structure, compared to the modular structure of ripple active compensation circuit 10 irregular in Fig. 1, in figure 5, together
Walking rectification module 101 includes: common mode inhibition unit 501, first switch unit 502, second switch unit 503, differentiation element 504
And isolated location 505.
Wherein, the power input of common mode inhibition unit 501 terminates DC power supply 30, and common mode inhibition unit 501 is to direct current
The electric energy in source 30 carries out common-mode signal inhibition.
In the present embodiment, when DC power supply 30 can export stable DC to common mode inhibition unit 501, pass through
Common mode inhibition unit 501 inhibits common-mode signal, so that thermal compensation signal and interference ripple that synchronous rectification module 101 exports
Polarity is on the contrary, improve thermal compensation signal for the counter-bonification ability of interference signal in power supply 20；And the common mode inhibition list
The common-mode rejection ratio of member 501 can be adjusted accordingly according to the actual needs of technical staff, improve the irregular ripple
The scope of application of active compensation circuit 10.
The control terminal of first switch unit 502 accesses the first driving signal, the first conducting termination of first switch unit 502
First power output end of common mode inhibition unit 501, first switch unit 502 are connected or turn off according to the first driving signal.
Wherein, the first driving signal output end of the control termination signal modulation module 106 of first switch unit 502, when
First power output end DC power output of common mode inhibition unit 501, can be changed by the level state of the first driving signal
Become conducting or the off state of first switch unit 502；If first switch unit 502 is respectively at different conducting or pass
When disconnected state, first switch unit 502 can be realized the function of voltage/current conversion, to change the polarity of electric energy.
The control terminal of second switch unit 503 accesses the second driving signal, the second conducting termination of second switch unit 503
The second source output end of common mode inhibition unit 501, second switch unit 503 are connected or turn off according to the second driving signal.
Wherein the second conduction terminal of first switch unit 502 and the first conduction terminal of second switch unit 503 connect altogether, with defeated
First AC signal out.
Second driving signal output end of the control termination signal modulation module 106 of the second switch unit 503, signal
Modulation module 106 exports the second driving signal to the control terminal of second switch unit 503, passes through the level of the second driving signal
State can change conducting or the off state of second switch unit 503；When second switch unit 503 be respectively at it is different
Conducting or off state, to drive the synchronous rectification module 101 to realize corresponding line lock rectification function.
In the embodiment of the present application, complementary the first driving signal and second of isolation is exported by signal modulation module 106
Driving signal, first switch unit 502 and second switch unit 503 are respectively connected to the first driving signal and the second driving signal,
First switch unit 502 and second switch unit 503 can be changed respectively by the first driving signal and the second driving signal
Conducting or off state are cooperated by first switch unit 502 and second switch unit 503 and are connected, so that first opens
First conduction terminal of the second conduction terminal and second switch unit 503 of closing unit 502 can export first with out of phase
AC signal, first AC signal can change the working condition of synchronous rectification module 101；101 energy of synchronous rectification module
It enough realizes different rectification functions, to promote irregular ripple active compensation circuit 10 that can export corresponding thermal compensation signal, leads to
The interference ripple of power supply 20 can be eliminated by crossing the thermal compensation signal, easy to operate, improve irregular ripple active compensation electricity
The control response speed on road 10 realizes the counter-bonification function for interfering ripple in power supply 20.
The of one end of differentiation element 504 and the second conduction terminal of first switch unit 502 and the second onunit 503
One conduction terminal connection, the first sampling module of another termination 102 of differentiation element 504, differentiation element 504 to the first AC signal into
Row differential simultaneously exports.
The differentiation element 504 can to AC signal carry out differential process, make differentiation element 504 can be improved synchronize it is whole
The output compensation line wave stability of flow module 101, can filter out power supply 20 by the compensation ripple in thermal compensation signal completely
In interference ripple；Simultaneously when the first sampling module 102 collects the thermal compensation signal of the output of synchronous rectification module 101, first is adopted
Egf block 102 can obtain the working condition of synchronous rectification module 101 according to thermal compensation signal, realize for synchronous rectification module
101 feedback control ensures the stability contorting performance of irregular ripple active compensation circuit 10, can be very big by thermal compensation signal
Voltage accuracy/current precision of ground raising power supply 20.
Isolated location 505 is connect with the other end of differentiation element 504, and isolated location 505 believes the first exchange after differential
It number carries out filtering out DC component and filters out low frequency AC components, to export the thermal compensation signal.
Wherein, isolated location 505 has the function of high-pass filtering；Differentiation element 504 is by the first AC signal after differential
After output to isolated location 505, the high fdrequency component in first AC signal is retained by isolated location 505, then is synchronized
The thermal compensation signal that rectification module 101 is exported only includes high fdrequency component, improves the precision of thermal compensation signal, prevents in thermal compensation signal
Noise jamming described in irregular ripple active compensation circuit 10 control performance, that is, guarantee the thermal compensation signal only to power supply electricity
Interference ripple in source 20 carries out counter-bonification, the current effective value and current average exported without influencing power supply 20；No
The scope of application of regular ripple active compensation circuit 10 is wider, and practical value is higher；Therefore synchronous rectification module in the present embodiment
101 have more simplified circuit modular structure, have ensured the synchronous rectification ability of synchronous rectification module 101, synchronous rectification mould
Block 101 can be realized adaptive feedback control；Ripple is compensated when synchronous rectification module 101 steadily exports, passes through the compensation line
The enough interference ripples for eliminating power supply 20 in real time of wave energy, reach 20 high frequency components of power supply and harmonic component filters out effect
Fruit, the electric energy that power supply 20 exports have more preferably stability.
As an alternative embodiment, Fig. 6 shows the circuit knot of synchronous rectification module 101 provided in this embodiment
Structure, as shown in fig. 6, common mode inhibition unit 501 includes common mode inductance T1, the common mode inductance T1 be can be realized for total in electric energy
The inhibition of mould signal, and do not change the electrical property of 30 DC power outputs of DC power supply, so that 101 energy of synchronous rectification module
Enough be in safe and stable working condition, improve the compatibility of irregular active compensation electric power 10 in the present embodiment with it is pervasive
Property.
The first switch unit 502 includes first switch tube M1 and first diode D1；Second switch unit 503 includes
Second switch M1 and the second diode D2；When first switch tube M1 accesses the first driving signal, second switch M2 access the
Two driving signal；Conducting or the off state that first switch tube M1 can be changed by the first driving signal drive by second
Dynamic signal can change conducting or the off state of second switch M2, wherein the first diode D1 and the second diode
D2 has afterflow effect, has ensured the physical security of first switch tube M1 and second switch M2；Therefore the in the present embodiment
One switch unit 502 and second switch unit 503 have more simplified circuit structure, and compatibility is extremely strong, and has ensured not
The control efficiency of regular ripple active compensation circuit 10, synchronous rectification module 101 are believed according to the first driving signal and the second driving
Number realize adaptive feedback control, the interference line of power supply 20 can be accurately filtered out by the compensation ripple in thermal compensation signal
Wave, control performance are splendid.
The differentiation element 504 includes: at least two concatenated inductance；Inductance accesses the first ac current signal, utilizes
The magnetic field induction phenomenon of inductance, inductance can be realized electric energy the effect of differential；Differentiation element 504 utilizes more in the present embodiment
A inductance can be improved the counter-bonification precision of thermal compensation signal, and the first sampling module 102 can steadily acquire synchronous rectification module
The thermal compensation signal of 101 outputs, improves the control response speed in irregular ripple active compensation circuit 10, the irregular grain
Wave active compensation circuit 10 can effectively eliminate the interference ripple of power supply 20 by the compensation ripple in thermal compensation signal.
The isolated location 505 includes the capacitor of multiple parallel connections, and wherein capacitor can play the role of " separated by direct communication ", institute
The precision that isolated location 505 has ensured high-pass filtering using multiple capacitors is stated, compatibility is extremely strong, avoids single device fault；When
When the output compensation ripple of isolated location 505,20 high frequency components harmony wavelength-division of power supply can be improved by the compensation ripple
The counter-bonification precision of amount, enables power supply 20 to be widely applicable in different industrial circles.
As an alternative embodiment, as shown in fig. 6, in the common mode inhibition unit 501, common mode inductance T1's
Different name terminates DC power supply 30, and the Same Name of Ends of common mode inductance T1 is that (the first power supply is defeated for the power output end of common mode inhibition unit 501
Outlet and second source output end), the common mode inhibition unit 501 in the present embodiment is able to suppress common-mode signal and does not change straight
The electrical property that galvanic electricity source 30 exports；In first switch unit 502, the control electrode of first switch tube M1 connects signal modulation module
The first conducting pole of 106, first switch tube M1 and the cathode of first diode D1 are connected to the first electricity of common mode inhibition unit 501 altogether
Source output terminal, the second conducting pole of first switch tube M1 and the anode of first diode D1 connect to form the first switch unit altogether
502 the second conduction terminal can change the conducting or shutdown of first switch tube M1 by the level state of the first driving signal
State passes through the of first switch unit 502 when the first of first switch tube M1, which is connected, is connected between pole and the second conducting pole
Two conduction terminals can export corresponding first AC signal, to drive synchronous rectification module 101 to realize the function of corresponding electric energy conversion
Energy；In the circuit structure of second switch unit 503, the control electrode of second switch M2 connects signal modulation module 106, signal tune
Molding block 106 exports the second driving signal to the control electrode of second switch M2, the first conducting pole of second switch M2 and
The cathode of second diode D2 connects the first conduction terminal to form second switch unit 503, the second conducting of second switch M2 altogether
The anode of pole and the second diode D2 are connected to the second source output end of common mode inhibition unit 501 altogether, pass through the second driving signal
Level state can change conducting or the off state of second switch M2 in real time, when second switch M2 conducting, altogether
The electric energy that mould inhibits unit 501 to export successively passes through the second conducting pole of second switch M2, second switch M2 first is led
Logical pole output, first switch tube M1 and second switch M2 are successively staggeredly connected.First switch unit 502 and second switch unit
503 complementary conductings are so that synchronous rectification module 101 has quickly dynamic response.
As an alternative embodiment, the first switch tube M1 is metal-oxide-semiconductor, the second switch M2 is MOS
Pipe, also can be selected other power switch tubes, such as IGBT (Insulated Gate BipolarTransistor, insulated gate bipolar
Transistor npn npn)；Therefore the synchronous rectification module 101 in the present embodiment has good control compatibility.
Illustratively, differentiation element 504 includes: the first inductance L1 and the second inductance L2, wherein the first inductance L1
Second conduction terminal of one 502 yuan of first switch list of termination and the first conduction terminal of second switch unit 503, the of the first inductance L1
The first end of two the second inductance L2 of termination, second the first sampling module 102 of termination and isolated location 505 of the second inductance L2, leads to
The differential action can be played for the first AC signal by crossing the first inductance L1 and the second inductance L2, and easy to operate, irregular ripple has
The manufacturing cost and application cost of source compensation circuit 10 are lower, realize the dynamical feedback of irregular ripple active compensation circuit 10
Control；Optionally, synchronous rectification module 101 further includes capacitor CS1, wherein the of first the first inductance L1 of termination of capacitor CS1
The first end at two ends and the second inductance L2, the second source output end of the second termination common mode inhibition unit 501 of capacitor CS1, institute
Pressure stabilizing can be played the role of in synchronous rectification module 101 and prevent over-voltage by stating capacitor CS1, to ensure synchronous rectification module
101 safe and stable operation.
The present embodiment realizes the synchronous rectification operation of electric energy by more simplified synchronous rectification module 101, synchronizes whole
The controllability of flow module 101 is stronger, and synchronous rectification module 101 is harmonious according to the high fdrequency component of AC ripple in power supply 20
Wave component generates corresponding compensation ripple, so that the compensation ripple realizes accurately anti-mend for the interference ripple of power supply 20
The effect of repaying has ensured the precision and stability of power supply 20；Irregular 10 energy of ripple active compensation circuit in the present embodiment
It is enough widely applicable in different industrial circles, the scope of application is extremely wide.
Fig. 7 shows the implementation process of irregular ripple New Method of Active Electronic Compensation provided in this embodiment, the irregular ripple
New Method of Active Electronic Compensation is applied to power supply, is acquired to the true AC ripple of power supply, to realize for power supply electricity
Interference ripple in source is adjusted, and improves the precision of power supply, so that the power supply in the present embodiment is with higher
Practical value；As shown in fig. 7, the irregular ripple New Method of Active Electronic Compensation specifically includes:
Step S701: a DC power supply is provided, and rectification is synchronized with the output to power supply to the DC power supply
Load a thermal compensation signal；The AC ripple state in the power supply wherein can be changed by first thermal compensation signal, it is real
The regulatory function of existing power supply output electric energy.
Step S702: sampled to obtain the AC ripple including interfering ripple to the output of power supply；The power supply
AC ripple in power supply includes various power components, is really handed over by interfering ripple that can accurately obtain in power supply
Flow liner wave information, the AC ripple have high sampling precision.
Step S703: one current sampling signal is obtained into sampling to thermal compensation signal；It can be real according to the current sampling signal
When monitoring step S701 in DC power supply synchronous rectification process.
Step S704: AC ripple and current sampling signal are handled to obtain the first ripple signal；By this first
Ripple signal can synthetically obtain the AC ripple information in the synchronous rectification effect and power supply of DC power supply, with reality
Referring now to the accurate manipulation of AC ripple in power supply.
Step S705: one triangular signal of access and the first ripple signal are modulated to obtain the isolation drive of two-way complementation
Signal；When two-way driving signal has different level states, irregular ripple New Method of Active Electronic Compensation can in the present embodiment
Corresponding compensation function is realized for power supply, improves the controllability of AC ripple in power supply.
Step S706: being adjusted DC power supply using the isolation drive signal of two-way complementation so that thermal compensation signal and dry
It is opposite to disturb ripple polarity；The feedback control that power supply is realized by the isolation drive signal of two-way complementation, due to thermal compensation signal
Therefore polarity with interference ripple by the compensation ripple in thermal compensation signal on the contrary, can be realized the counter-bonification for interfering ripple
Function improves the precision of power supply to completely inhibit the interference ripple in power supply output electric energy.
It should be noted that irregular ripple New Method of Active Electronic Compensation and ripple active compensation circuit irregular in Fig. 1 in Fig. 7
10 is corresponding, and each specific steps closed in irregular ripple New Method of Active Electronic Compensation in this present embodiment can refer to Fig. 1 to Fig. 6's
Embodiment will not be described in great detail herein.
In irregular ripple New Method of Active Electronic Compensation out shown in Fig. 7, pass through the synchronous rectification process for DC power supply
Real-time sampling, monitoring are carried out, driving signal is obtained according to AC ripple and current sampling signal, wherein the electricity of the driving signal
The information of the practical AC ripple of level state and power supply has contrast relationship, adjusts DC power supply according to driving signal
Synchronous rectification operation, to form feedback control, the interference ripple in power supply can be accurately eliminated by thermal compensation signal, controlled
The accuracy of system is high, and power supply can export more stable electric energy, improves the quality of power supply；To this implementation
Irregular ripple New Method of Active Electronic Compensation in example can eliminate in real time confession for the feedback control of AC ripple in power supply
Interference ripple in power supply, loudness speed faster, improve the sampling precision of electric current, and practical value is high；It efficiently solves
Traditional technology can not accurately sample the irregular ripple of power supply and carry out counter-bonification, and the stability of power supply is lower,
The voltage/current precision of power supply output is not high, causes power supply can not blanket problem.
Fig. 8 shows the modular structure of power supply system 80 provided in this embodiment, as shown in figure 8, power supply system 80 includes:
Power supply 801, DC power supply 802 and irregular ripple active compensation circuit 10, irregular ripple active compensation circuit 10 with
Power supply 801 and DC power supply 802 connect.
Wherein, DC power supply 802 is adjusted in irregular ripple active compensation circuit 10, so that DC power supply 802 is defeated
Out with the opposite polarity thermal compensation signal of ripple is interfered in power supply 801, by thermal compensation signal to interfering line in power supply 801
Wave carries out counter-bonification.
Since power supply system 80 is corresponding with ripple active compensation circuit 10 irregular in Fig. 1 in Fig. 8, about Fig. 8
The concrete operating principle of middle power supply system 80 can refer to the specific embodiment of irregular ripple active compensation circuit 10 in Fig. 1,
It will not be described in great detail herein.
It can be according to the AC ripple information in power supply 801 to direct current by irregular ripple active compensation circuit 10
Power supply 802 is adjusted so that the DC power supply 802 export thermal compensation signal to the interference ripple in power supply 801 into
The interference ripple in power supply 801 is eliminated in row counter-bonification, and the electric energy that power supply 801 exports has more preferably stability, is supplied
The control response speed of power supply 801 faster, improves the precision and quality of power supply 801；To the confession in the present embodiment
Electric system 80 can the higher electric energy of output quality, the power supply system 80 can suitable for different types of load so that
Load is chronically at specified working condition, improves the practical value and universality of power supply system 80；Efficiently solve biography
Interference signal is excessive in the power supply system of system, and the electric energy precision in power supply system is lower and power supply system is unstable, power supply system
System can not be useful in different types of load, the not high problem of practical value.
In conclusion the irregular ripple active compensation circuit 10 in the utility model embodiment can be according to power supply
In AC ripple, feedback control is carried out to the course of work of synchronous rectification module, so that the compensation of synchronous rectification module output
Signal interferes ripple to carry out counter-bonification in power supply, improves the precision of power supply output electric energy, keeps power supply defeated
Electric energy out has higher quality；The irregular ripple active compensation circuit 10 has the control being exceedingly fast for power supply
Response speed reduces the electric energy loss of power supply, improves the power supply efficiency of power supply；And then the utility model embodiment
In irregular ripple active compensation circuit 10 can be widely applicable for the design of precision voltage source, filtering compensation and battery inspection
The every field such as survey, use scope is extremely wide, plays positive facilitation for the development of power technology.
Various embodiments are described to various devices, circuit, device, system and or method herein.It elaborates very much
Specific details is to provide general construction, the function, system of the embodiment that the sum as described in the description is shown in the accompanying drawings
The thorough understanding made and used.However it will be understood by those skilled in the art that embodiment can be in not such certain detail
It is carried out in the case where section.In other examples, well known operation, component and element is described in detail, in order to avoid make in specification
In embodiment indigestion.It will be understood by those skilled in the art that being unrestricted in the embodiment with shown in herein
Property example, and therefore it can be appreciated that, can be in specific structure and function details disclosed herein representative and and different
The range of definite limitation embodiment.
Throughout the specification to " various embodiments ", " in embodiments ", " embodiment " or " embodiment party
The reference of formula " etc., which is meant, is included at least one embodiment about a particular feature, structure, or characteristic described in embodiment
In.Therefore, phrase " in various embodiments ", " in some embodiments ", " in one embodiment " or " implementing
In mode " etc. the appearance in appropriate place throughout the specification be not necessarily all referring to same embodiment.In addition, specific spy
Sign, structure or characteristic can combine in any suitable manner in one or more embodiments.Implement accordingly, with respect to one
The a particular feature, structure, or characteristic that mode shows or describes can entirely or partly with one or more of the other embodiment spy
Sign, structure or characteristic are combined, without assuming that such combination is not illogical or non-functional limitation.Any side
To with reference to (for example, add, subtract, top, lower part, upwards, downwards, the left side, the right, to the left, to the right, top, bottom ...
On ... under, it is vertical, horizontal, clockwise and anticlockwise) purpose to be for identification to help reader to understand present disclosure,
And limitation is not generated, especially with regard to the position of embodiment, orientation or use.
Although describing certain embodiments above with some the level of detail, those of skill in the art can be to institute
Disclosed embodiment makes many changes without departing from the scope of the present disclosure.Connection is with reference to (for example, attachment, coupling, connection
Deng) should be widely interpreted, and may include the intermediate member between the connection of element and relative motion between elements.Cause
This, connection reference does not necessarily imply that two elements are directly connected to/couple and are in fixed relationship each other." such as " entire
Use in specification should be widely interpreted and for providing the non-limitative example of embodiment of the present disclosure, and the disclosure
It is not limited to such example.Being intended that all affairs for including in the foregoing description or be shown in the accompanying drawings should be interpreted only
It is illustrative rather than restrictive.The variation in details or structure can be made without departing from the disclosure.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. a kind of irregular ripple active compensation circuit, connect with power supply, which is characterized in that the irregular ripple is active
Compensation circuit includes:
Power input terminates DC power supply, accesses the first driving signal and the second driving signal, is configured as according to the first driving
Signal and the second driving signal to the electric energy of the DC power supply synchronize output after rectification have in the power supply
Interfere the synchronous rectification module of the opposite polarity thermal compensation signal of ripple；
It is connect with the synchronous rectification module, is configured as that the thermal compensation signal is sampled to obtain a current sampling signal
First sampling module；
It is connect with the power supply, is configured as acquiring the second sampling module of the AC ripple of the power supply；
It connect, is configured as to the AC ripple and the electricity with first sampling module and second sampling module
Stream sampled signal is handled to obtain the ripple processing module of the first ripple signal；
It is configurable to generate the signal generating module of triangular signal；And
It connect, is configured as to described with the ripple processing module, the signal generating module and synchronous rectification module
One ripple signal and the triangular signal are modulated first driving signal for generating two-way complementation and described second and drive
The signal modulation module of dynamic signal.
2. irregular ripple active compensation circuit according to claim 1, which is characterized in that the interference ripple includes:
The AC ripple medium-high frequency ripple and harmonic wave of the power supply.
3. irregular ripple active compensation circuit according to claim 1, which is characterized in that the irregular ripple is active
Compensation circuit further include:
It is connected between second sampling module and the ripple processing module, is configured as carrying out the AC ripple high
The filter module of pass filter.
4. irregular ripple active compensation circuit according to claim 1, which is characterized in that the ripple processing module packet
It includes:
It is connect with first sampling module, the first signal for being configured as carrying out the current sampling signal ratio enlargement is put
Big device；
It is connect with second sampling module, is configured as carrying out the second of ratio enlargement to the AC ripple of the power supply
Signal amplifier；
It is connect with first signal amplifier and second signal amplifier, is configured as the amplified electric current of comparative example and adopts
Sample signal is added to obtain the adder of the first ripple signal with the AC ripple after ratio enlargement；And
It is connected between the adder and the signal modulation module, is configured as carrying out reverse phase to first ripple signal
The inverting integrator of integral.
5. irregular ripple active compensation circuit according to claim 1, which is characterized in that the irregular ripple is active
Compensation circuit further include:
Be connected between the signal modulation module and the synchronous rectification module, be configured as to first driving signal into
First PWM drive circuit of row PWM rectification；
Be connected between the signal modulation module and the synchronous rectification module, be configured as to second driving signal into
Second PWM drive circuit of row PWM rectification.
6. irregular ripple active compensation circuit according to claim 1, which is characterized in that the synchronous rectification module packet
It includes:
Power input terminates the DC power supply, is configured as carrying out being total to for common-mode signal inhibition to the electric energy of the DC power supply
Mould inhibits unit；
Control terminal accesses first driving signal, and the first conducting terminates the first power output end of the common mode inhibition unit,
It is configured as the first switch unit for being connected or turning off according to first driving signal；
Control terminal accesses second driving signal, and the second conducting terminates the second source output end of the common mode inhibition unit,
It is configured as the second switch unit for being connected or turning off according to second driving signal；
Wherein the second conduction terminal of the first switch unit and the first conduction terminal of the second switch unit connect altogether, with output
First AC signal；
One end is connect with the first conduction terminal of the second conduction terminal of the first switch unit and second switch unit, the other end with
First sampling module is configured as carrying out first AC signal differentiation element of differential；And
It is connect with the other end of the differentiation element, is configured as that the first AC signal after the differential is carried out filtering out direct current
Component and low frequency AC components are filtered out, to export the isolated location of the thermal compensation signal.
7. irregular ripple active compensation circuit according to claim 6, which is characterized in that the common mode inhibition unit packet
It includes: common mode inductance；
The first switch unit includes: first switch tube and first diode；
The second switch unit includes: second switch and the second diode；
The differentiation element includes: at least two concatenated inductance；
The isolated location includes: the capacitor of multiple parallel connections.
8. irregular ripple active compensation circuit according to claim 7, which is characterized in that the first switch tube is
Perhaps the IGBT second switch is metal-oxide-semiconductor or IGBT to metal-oxide-semiconductor.
9. irregular ripple active compensation circuit according to claim 1, which is characterized in that the second sampling module packet
Include current sensor.
10. a kind of power supply system characterized by comprising
Power supply, DC power supply and such as described in any item irregular ripple active compensation circuits of claim 1-9, it is described
Irregular ripple active compensation circuit is connect with the power supply and the DC power supply；
The DC power supply is adjusted in the irregular ripple active compensation circuit, so that DC power supply output and institute
The interference opposite polarity thermal compensation signal of ripple is stated in power supply, by the thermal compensation signal to interfering line in the power supply
Wave carries out counter-bonification.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111338244A (en) * | 2020-02-26 | 2020-06-26 | 佛山市斯特美光电科技有限公司 | Power signal processing circuit and power utilization system |
| CN112924744A (en) * | 2019-12-06 | 2021-06-08 | 新疆金风科技股份有限公司 | Ripple current measuring method and device, computer equipment and coil assembly |
| CN116449082A (en) * | 2023-06-19 | 2023-07-18 | 江西清华泰豪三波电机有限公司 | Sampling circuit and power supply system |
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2018
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924744A (en) * | 2019-12-06 | 2021-06-08 | 新疆金风科技股份有限公司 | Ripple current measuring method and device, computer equipment and coil assembly |
| CN111338244A (en) * | 2020-02-26 | 2020-06-26 | 佛山市斯特美光电科技有限公司 | Power signal processing circuit and power utilization system |
| CN116449082A (en) * | 2023-06-19 | 2023-07-18 | 江西清华泰豪三波电机有限公司 | Sampling circuit and power supply system |
| CN116449082B (en) * | 2023-06-19 | 2023-10-20 | 江西清华泰豪三波电机有限公司 | Sampling circuit and power supply system |
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