CN106655844A - Full-digital phase-locked loop-based resonant current phase controller and method - Google Patents
Full-digital phase-locked loop-based resonant current phase controller and method Download PDFInfo
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- CN106655844A CN106655844A CN201610861509.4A CN201610861509A CN106655844A CN 106655844 A CN106655844 A CN 106655844A CN 201610861509 A CN201610861509 A CN 201610861509A CN 106655844 A CN106655844 A CN 106655844A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/4815—Resonant converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The embodiment of the invention discloses a full-digital phase-locked loop-based resonant current phase controller and a method thereof, wherein the phase of a resonant current in an application scenario wherein medium-high-frequency and load parameters are changing within a large range can be controlled. According to the embodiments of the invention, the full-digital phase-locked loop-based resonant current phase controller comprises a full-digital phase-locked loop, a communication module, a phase reference signal generator, a phase feedback signal switching module, an amplitude detection module and a driving signal generation module. According to the invention, according to the phase difference between a phase reference signal and a phase feedback signal, the frequency and the phase of a drive pulse reference signal can be adjusted quickly. Therefore, the phase reference signal of the resonance current phase can be automatically tracked and controlled. The problems in the prior art that the traditional method is poor in control accuracy and complicated in parameter design of a control loop system can be avoided. Moreover, according to the technical scheme of the invention, the implementation scheme is simple and the parameter design is flexible. The requirements of medium-high-frequency multi-phase resonant currents, such as digitized phase or phase difference, accurate closed loop control and the like, can be met.
Description
Technical field
The present invention relates to phaselocked loop digital circuit field, more particularly to a kind of resonance current phase based on all-digital phase-locked loop
Level controller and method.
Background technology
At present, the power-supply system of resonance inverter containing multiphase serial is sent out in high-frequency ac distributed power supply system, rotating excitation field
The field such as generating apparatus and subregion sensing heating is extensively applied, in these application scenarios all to the resonance inverter output that is respectively in series
The phase place of medium-high frequency AC sine curtage or the control of phase difference propose higher requirement.Currently for this kind of exchange
The phase controlling of voltage or current signal does not have too many correlative study.
Traditional method mainly includes the analogy method and two kinds of the digital method based on digit chip based on discrete device,
The former is typically using the phase between the electric circuit inspection manipulated signal and reference signal being made up of analog multiplier and low pass filter
Potential difference, is compared as phase modulated signal using the signal of the circuit output with carrier signal, so as to obtain inverter circuit
Drive signal；The latter typically adopts inspection of the digit chip programming realization to phase difference between manipulated signal and phase reference signal
Survey, the phase place of the drive signal of inverter circuit is determined by the transmission function of phase controller.
Analogy method based on discrete device is when the frequency of manipulated signal is higher it is difficult to ensure that the accuracy of phase controlling；
Phase controller parameter based on the digital method of digit chip is very sensitive for resonant load parameter, load parameter compared with
The application scenario of big range, it is difficult to build the phase controller transmission function being suitable in gamut.Therefore, how to realize
To medium-high frequency and load parameter is those skilled in the art in the resonance current phase controlling of interior change application occasion in a big way
Technical problem urgently to be resolved hurrily.
The content of the invention
A kind of resonance current phase controller based on all-digital phase-locked loop and method are embodiments provided, is suitable for
The application scenario of phase controlling is carried out to series resonant inverter output voltage or electric current in sampling Phase Lock Technique.
A kind of resonance current phase controller based on all-digital phase-locked loop is embodiments provided, including it is digital
Phaselocked loop, phase reference signal generator, amplitude detection module, phase-feedback signal handover module and driving pulse produce mould
Block；
The output end of the phase reference signal generator connects the all-digital phase-locked loop；
The all-digital phase-locked loop is connected with the phase-feedback signal handover module, forms circuit loop；
The input of the phase-feedback signal handover module connects the amplitude detection module；
The driving pulse generation module connects the output end of the all-digital phase-locked loop.
Preferably, also including communication module,
The communication module connects respectively the phase reference signal generator and the all-digital phase-locked loop.
Preferably,
The all-digital phase-locked loop includes digital phase discriminator, random walk wave filter (random walk filter), mould
Value K control module, PI controllers, change N values frequency divider and Clock dividers；
The Clock dividers connect the digital phase discriminator, random walk wave filter, PI controllers, modulus value K control mould
Block and change N value frequency dividers；
The digital phase discriminator connection random walk wave filter and modulus value K control module；
The random walk wave filter connects respectively the output end and PI controllers of modulus value K control module；
The PI controllers connect respectively the output end and input for becoming N value frequency dividers.
Preferably,
The digital phase discriminator is edge type flip-over type JK flip-flop.
Preferably,
The random walk wave filter is filtered by the way of loop filtering；
The random walk wave filter is digital filter, for have 2K stage upwards-Down-counter, wherein K is
The output valve of the modulus value K controller.
Preferably,
The modulus value K controller changes modulus value K according to the size of the digital phase discriminator output phase error signal
Value.
Preferably,
The phase-feedback signal handover module by comparator, d type flip flop and the first nor gate, the second nor gate, the 3rd
Nor gate and OR gate are constituted；
The comparator input terminal connects respectively the amplitude detection module and default constant, and output end connects the D
The input of trigger；
Two inputs of first nor gate connect respectively the driving pulse reference signal and the d type flip flop
Q ends；
Two inputs of second nor gate connect respectively the current phase signal and the Q of the d type flip flop is non-
End；
Two inputs of the 3rd nor gate connect respectively the output end of first nor gate and described second or
The output end of not gate, the output end of the 3rd nor gate exports the phase-feedback signal；
Two inputs of the OR gate connect respectively the driving pulse reference signal and the current phase signal, institute
The output end for stating OR gate connects the Clock control end (C1 ends) of the d type flip flop；
Low level reset terminal (CLR ends) the connection power supply VCC of the d type flip flop.
A kind of resonance current phase control method is embodiments provided, based on above-mentioned resonance current phase controlling
Device,
S1：Phase reference signal and phase-feedback signal that all-digital phase-locked loop is exported according to phase reference signal generator
Phase difference between the phase-feedback signal of handover module output quickly adjusts the driving pulse of the all-digital phase-locked loop output
The frequency and phase place of reference signal, and then change the frequency and phase place of the phase-feedback signal；
S2：The all-digital phase-locked loop judges that the phase-feedback signal is equal with the phase reference signal frequency, phase
Potential difference is zero or constant, and enters lock-out state so that driving pulse generation module is exported and the phase reference signal frequency
Equal, phase difference is zero or the output pulse of constant.
Preferably,
Phase reference signal and phase feedback letter that the all-digital phase-locked loop is exported according to phase reference signal generator
Phase difference between the phase-feedback signal of number handover module output quickly adjusts the driving arteries and veins of the all-digital phase-locked loop output
The frequency and phase place for rushing reference signal is specially：
Digital phase discriminator is edging trigger type JK flip-flop, and when detecting the phase reference signal rising edge, output is put
Position (output logic 1), when detecting the phase phase-feedback signal rising edge, output resets (output logical zero)；
Random walk wave filter is counted to the phase error signal that the digital phase discriminator is exported, output plus pulse or
Subtract pulse signal；
PI controllers are exported to the random walk wave filter plus pulse subtracts pulse and processes, and draws frequency division value N；
Frequency division value N and the work clock f of Clock dividers output that change N values frequency divider is exported according to the PI controllersx
The symmetrical logical pulse square-wave signal of output.
Preferably, also include before step S1：
Communication module sets according to resonance inverter operating condition to all-digital phase-locked loop and phase reference signal generator
System configuration parameter；
Phase reference signal generator is exported and expected resonance current phase signal frequency according to the system configuration parameter
Equal, 180 ° of phase shift phase reference signal；
The resonance current Jing after the process of high-speed a/d change-over circuit that amplitude detection module is exported to the resonance inverter enters
Row filtering, peakvalue's checking, obtain resonance current amplitude；
Whether phase-feedback signal handover module judges the resonance current amplitude more than default pattern switching constant；
If the resonance current amplitude is less than the pattern switching constant, the phase-feedback signal handover module exports institute
The driving pulse reference signal of all-digital phase-locked loop output is stated as phase-feedback signal.
If the resonance current amplitude is more than the pattern switching constant, the phase-feedback signal handover module exports Jing
The phase signal of the resonance current after zero passage phase-detection is used as phase-feedback signal.
Embodiments provide a kind of resonance current phase control system, including resonance inverter, PC control
Terminal and above-mentioned resonance current phase controller,
The PC control terminal connects the resonance current phase controller；
The resonance current phase controller connects the resonance inverter.
Preferably,
The PC control terminal is specially resonance current phase controller and resonance inverter system man-machine interaction control
Device processed, for configuring to the parameter of resonance current phase controller.
As can be seen from the above technical solutions, the embodiment of the present invention has advantages below：
The present invention can complete resonance inverter based on a kind of new all-digital phase-locked loop design according to resonance current amplitude
, to preset phase reference signal from motion tracking, running is stable and reliable, and the floating of phase place is closed for output current phase place
Ring control is completed during the automatic locking tracking of phaselocked loop, without having to worry about load parameter difference to current phase
The impact of control.Additionally, present invention additionally comprises communication module, can pass through the spirit of PC control terminal according to practical application request
Configuration Control Unit systematic parameter living, can ensure phase controlling precision good enough in different application occasion, be particularly suited for
The precise control of each phase resonance current phase or phase difference in multiphase resonance inverter power-supply system.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is that a kind of resonance current phase controller based on all-digital phase-locked loop provided in an embodiment of the present invention is illustrated
Figure；
Fig. 2 is total in a kind of resonance current phase controller based on all-digital phase-locked loop provided in an embodiment of the present invention
The eDRAM of word phaselocked loop；
Fig. 3 is phase place in a kind of resonance current phase controller based on all-digital phase-locked loop provided in an embodiment of the present invention
The operation principle schematic diagram of feedback signal handover module；
Fig. 4 is that another kind of resonance current phase controller based on all-digital phase-locked loop provided in an embodiment of the present invention is illustrated
Figure；
Fig. 5 is that another kind of resonance current phase controller based on all-digital phase-locked loop provided in an embodiment of the present invention is illustrated
Figure；
Fig. 6 is side in another kind of resonance current phase controller based on all-digital phase-locked loop provided in an embodiment of the present invention
Along the work wave schematic diagram of flip-over type JK flip-flop；
Fig. 7 is a kind of resonance current phase control method provided in an embodiment of the present invention；
Fig. 8 is another kind of resonance current phase control method provided in an embodiment of the present invention；
Fig. 9 is another kind of resonance current phase control method provided in an embodiment of the present invention；
Figure 10 is another kind of resonance current phase control method provided in an embodiment of the present invention；
Figure 11 is a kind of resonance current phase control system provided in an embodiment of the present invention.
Wherein, reference implication is as described below：
1st, all-digital phase-locked loop；101st, digital phase discriminator；102nd, random walk wave filter；103rd, modulus value K control module；
104th, PI controllers；105th, N value frequency dividers are become；2nd, communication module；3rd, phase reference signal generator；4th, amplitude detection module；
5th, phase-feedback signal handover module；6th, driving pulse generation module；801st, PC control terminal；802nd, resonance current control
Device；803rd, resonance inverter.
Specific embodiment
A kind of resonance current phase controller based on all-digital phase-locked loop and method are embodiments provided, is suitable for
The application scenario of phase controlling is carried out to series resonant inverter output voltage or electric current in sampling Phase Lock Technique.
To enable goal of the invention, feature, the advantage of the present invention more obvious and understandable, below in conjunction with the present invention
Accompanying drawing in embodiment, is clearly and completely described, it is clear that disclosed below to the technical scheme in the embodiment of the present invention
Embodiment be only a part of embodiment of the invention, and not all embodiment.Based on the embodiment in the present invention, this area
All other embodiment that those of ordinary skill is obtained under the premise of creative work is not made, belongs to protection of the present invention
Scope.
Embodiment 1
A kind of resonance current phase controller based on all-digital phase-locked loop is embodiments provided, as shown in figure 1,
Including all-digital phase-locked loop 1, phase reference signal generator 3, amplitude detection module 4, phase-feedback signal handover module 5 and drive
Moving pulse generation module 6；
The output end connection all-digital phase-locked loop 1 of phase reference signal generator 3；
All-digital phase-locked loop 1 is connected with phase-feedback signal handover module 5, forms circuit loop；
The input connection amplitude detection module 4 of phase-feedback signal handover module 5；
Driving pulse generation module 6 connects the output end of all-digital phase-locked loop 1.
Refer to Fig. 2, the phase reference signal and phase of the output of the detection phase reference signal of all-digital phase-locked loop 1 generator 3
Phase difference between the phase-feedback signal of the output of position feedback signal handover module 5, quick adjustment all-digital phase-locked loop 1 output
The frequency and phase place of driving pulse reference signal, and then change frequency and phase place that driving pulse generation module 6 exports pulse,
In actual resonance inverter, the driving pulse of inverter circuit and resonance current phase difference are constant in the case of frequency is constant, because
This, exporting the change of the frequency and phase place of pulse can cause resonance current phase place change, after dynamic tracking process adjusting, entirely
Digital phase-locked loop 1 enters lock-out state, and the phase-feedback signal of the output of phase-feedback signal handover module 5 is locked into phase place ginseng
Examine in the phase reference signal phase place of the output of signal generator 3, both frequencies are equal, phase difference is zero or constant.
Refer to Fig. 3, phase-feedback signal handover module 5 by comparator, d type flip flop and the first nor gate, second or non-
Door, the 3rd nor gate, OR gate composition；
Comparator input terminal connects respectively amplitude detection module and default constant, and output end connects the input of d type flip flop
End；
Two inputs of the first nor gate connect respectively the Q ends of driving pulse reference signal and d type flip flop；
Two inputs of the second nor gate connect respectively the non-ends of the Q of current phase signal and d type flip flop；
Two inputs of the 3rd nor gate connect respectively the output end of the first nor gate and the output end of the second nor gate,
The output end output phase feedback signal of the 3rd nor gate；
Two inputs of OR gate connect respectively driving pulse reference signal and current phase signal, and the output end of OR gate connects
Connect the Clock control end (C1 ends) of d type flip flop；
Low level reset terminal (CLR ends) the connection power supply VCC of d type flip flop.
The signal source of the output phase feedback signal of phase-feedback signal handover module 5 has two：All-digital phase-locked loop 1 is exported
Driving pulse reference signal and the phase signal of resonance current that arrives of external detection.Phase-feedback signal handover module 5 is in width
It is automatically the signal source of the selected phase feedback signal of all-digital phase-locked loop 1 under the control of value detection module 4, to avoid resonance inversion
Device mutually fails in the little lock for causing of startup stage resonance current signal, the expression of the logic function of phase-feedback signal handover module 5
Formula isWherein, A and B represent respectively the driving pulse reference signal harmony of the output of all-digital phase-locked loop 1
Shake current phase signal.
Embodiment 2
A kind of resonance current phase controller based on all-digital phase-locked loop of the embodiment of the present invention, as shown in figure 4, including logical
Letter module 2, all-digital phase-locked loop 1, phase reference signal generator 3, amplitude detection module 4, phase-feedback signal handover module 5
With driving pulse generation module 6；
Communication module 2 connects respectively phase reference signal generator 3 and all-digital phase-locked loop 1；
The output end connection all-digital phase-locked loop 1 of phase reference signal generator 3；
All-digital phase-locked loop 1 is connected with phase-feedback signal handover module 5, forms circuit loop；
The input connection amplitude detection module 4 of phase-feedback signal handover module 5；
Driving pulse generation module 6 connects the output end of all-digital phase-locked loop 1.
The above-mentioned resonance current phase controller based on all-digital phase-locked loop 1 connects with the communication of PC control terminal 801
Mouth is communication module 2, specifically RS-232 serial communication modulars.RS-232 serial communication modulars 2 receive PC control terminal
801 control instructions for sending, and complete parameter configuration or modification to all-digital phase-locked loop 1 and phase reference signal generator 3.
PC control terminal 801 can be answered by the flexibly configurable controller system parameter of RS-232 serial communication modulars 2 different
Ensure phase controlling precision good enough with occasion.
Embodiment 3
A kind of resonance current phase controller based on all-digital phase-locked loop of the embodiment of the present invention, as shown in figure 5, including logical
Letter module 2, all-digital phase-locked loop 1, phase reference signal generator 3, amplitude detection module 4, phase-feedback signal handover module 5
With driving pulse generation module 6；
Communication module 2 connects respectively phase reference signal generator 3 and all-digital phase-locked loop 1；
The output end connection all-digital phase-locked loop 1 of phase reference signal generator 3；
All-digital phase-locked loop 1 is connected with phase-feedback signal handover module 5, forms circuit loop；
The input connection amplitude detection module 4 of phase-feedback signal handover module 5；
Driving pulse generation module 6 connects the output end of all-digital phase-locked loop 1.
Wherein, all-digital phase-locked loop 1 includes digital phase discriminator 101, random walk wave filter 102, modulus value K control module
103rd, PI controllers 104, change N values frequency divider 105 and Clock dividers；
Clock dividers connection digital phase discriminator 101, random walk wave filter 102, PI controllers 104, modulus value K control mould
Block 103 and change N values frequency divider 105；
The connection random walk of digital phase discriminator 101 wave filter 102 and modulus value K control module 103；
Random walk wave filter 102 connects respectively the output end and PI controllers 104 of modulus value K control module 103；
PI controllers 104 connect respectively the output end and input for becoming N values frequency divider 105.
Fig. 6 is referred to, digital phase discriminator 101 is edge type flip-over type JK flip-flop, detect phase reference signal generation
During the phase reference signal rising edge of the output of device 3, the output set of digital phase discriminator 101 (output logic 1) detects phase feedback
During the phase-feedback signal rising edge of the output of signal handover module 5, the output of digital phase discriminator 101 resets (output logical zero), numeral
The dutycycle of the logic pulse signal of the output of phase discriminator 101 reflects the phase place between phase reference signal and phase-feedback signal
Difference.
Random walk wave filter 102 is cycle of phase-locked loop digital filter, and random walk wave filter 102 is that have 2K stage
Upwards-Down-counter.The initial value for assuming counter is K, and when the phase error signal of input is logic 1, counter exists
Carry out plus coujnt under the control of reference clock upwards, when counter counts count to 2K, random walk wave filter 102 can export one
Plus pulse signal, the count value of unison counter is reset to K；When the phase error signal of input is logical zero, counter is in ginseng
Examine and carry out upwards under the control of clock subtraction count, when counter counts count to 0, random walk wave filter 102 can export one and subtract
Pulse signal, the count value of unison counter is reset to K.It follows that when the dutycycle of phase error signal is equal to 50%,
Plus pulse and subtract pulse number it is equal；When the dutycycle of phase error signal is more than 50%, plus the number of pulse is more than subtracting
The number of pulse；When the dutycycle of phase error signal is less than 50%, plus the number of pulse is less than the number for subtracting pulse.Random trip
Walk wave filter 102 not only to be quantified phase error signal, and can effectively suppress the shake of input signal.
Output valve K of modulus value K controller 103 controls the count maximum of the counter of random walk wave filter 102, modulus value
K controllers change the value of output modulus value K according to the size of the output phase error signal of digital phase discriminator 101, and K values are bigger, lock
Phase velocity is slower, lock phase steady-state error is less, otherwise K values are less, and lock phase velocity is faster, lock phase steady-state error is bigger.
What PI controllers 104 were exported to random walk wave filter 102 adds pulse and subtract pulse carries out count aggregation, obtains one
Phase error quantization value n in individual controlling cyclee, PI controllers 104 carry out proportional plus integral control, obtain controlled quentity controlled variable, wherein k to it
It is that controlling cycle is numbered, kpAnd kiRespectively proportionality coefficient and integral coefficient.Δ n and phaselocked loop centre frequency frequency division value N0Summation
Obtain the frequency division value N that next controlling cycle becomes N values frequency divider 105.
Become N values frequency divider 105 in output frequency division value N of PI controllers 104 and the output services clock of system clock frequency divider 106
fxControl under export symmetrical logical pulse square-wave signal.In an embodiment of the present invention, become N values frequency divider 105 only to exist
Frequency division counter value N can be just updated after a upper frequency division counter end cycle, to ensure its output signal Cycle by Cycle frequency conversion.
The dynamic and static state performance of resonance current phase controller embodiment of the present invention is determined by three parameters：Random walk is filtered
The proportionality coefficient k of counting modulus value K, the PI controller 104 of device 102pWith integral coefficient ki.By all-digital phase-locked loop 1 is carried out from
Scattered domain small-signal modeling, is obtained the output phase error θ of digital phase discriminator 101eTo phase reference signal phase thetarError propagation
Function：
Wherein, N0It is the initial frequency division value for becoming N values frequency divider 105, the centre frequency of its correspondence phaselocked loop, different N0Generation
Table phaselocked loop different centre frequency.The parameter setting of error transfer function has following characteristics：
1、kpIt is bigger, phase error thetaeThe amplitude of vibration is less and decays to that zero speed is faster, i.e. the locking speed of phaselocked loop
Spend faster, stability better；
2、kiLess, the damped coefficient of phase-locked loop systems is bigger, phase error thetaeVibration is less susceptible to, that is, increased lock phase
The stability margin of ring, but slow down the response speed of system；
3rd, random walk wave filter 102 counts modulus value K and reduces, and the response speed of phase-locked loop systems accelerates, system phase lock
The process of fixed tracking shortens, otherwise the response speed of phase-locked loop systems is slack-off, and the process of system phase locks tracking is elongated；
4、N0Value is bigger, i.e. when the frequency of phase reference signal is lower, the process of phase-locked loop systems PGC demodulation tracking is got over
It is long.
Preferably,
Random walk wave filter 102 is filtered by the way of loop filtering；
Random walk wave filter 102 is digital filter, for have 2K stage upwards-Down-counter, wherein K is mould
The output valve of value K controller.
Preferably,
Modulus value K controller changes the value of modulus value K according to the size of the output phase error signal of digital phase discriminator 101.
Embodiment 4
A kind of resonance current phase control method is embodiments provided, as shown in fig. 7, based on above-mentioned resonance electricity
Stream phase controller, including：
S1：Phase reference signal and phase-feedback signal that all-digital phase-locked loop is exported according to phase reference signal generator
Phase difference between the phase-feedback signal of handover module output quickly adjusts the driving pulse reference of the output of all-digital phase-locked loop 1
The frequency and phase place of signal, and then change the frequency and phase place of phase-feedback signal；
S2：All-digital phase-locked loop judges that phase-feedback signal is equal with phase reference signal frequency, phase difference is zero or often
Number, and enters lock-out state so that driving pulse generation module export, phase difference equal with phase reference signal frequency be zero or
The output pulse of constant.
Embodiment 5
A kind of resonance current phase control method is embodiments provided, as shown in figure 8, based on above-mentioned resonance electricity
Stream phase controller, including：
501st, digital phase discriminator is edging trigger type JK flip-flop, and when detecting phase reference signal rising edge, output is put
Position (output logic 1), when detecting phase phase-feedback signal rising edge, output resets (output logical zero)；
502nd, random walk wave filter is counted to the phase error signal that digital phase discriminator is exported, output plus pulse or
Subtract pulse signal；
503rd, PI controllers random walk wave filter is exported plus pulse and subtract pulse and process, draw frequency division value N；
504th, change N values frequency divider is exported according to PI controllers frequency division value N and the work clock f of Clock dividers outputx
The symmetrical logical pulse square-wave signal of output；
505th, all-digital phase-locked loop adjusts the driving pulse ginseng of all-digital phase-locked loop output according to logical pulse square-wave signal
The frequency and phase place of signal are examined, and then changes the frequency and phase place of phase-feedback signal；
506th, all-digital phase-locked loop judges that phase-feedback signal is equal with phase reference signal frequency, phase difference is zero or often
Number, and enters lock-out state so that driving pulse generation module export, phase difference equal with phase reference signal frequency be zero or
The pulse of constant.
Embodiment 6
A kind of resonance current phase control method is embodiments provided, as shown in figure 9, based on above-mentioned resonance electricity
Stream phase controller, including：
601st, communication module according to resonance inverter operating condition to all-digital phase-locked loop and phase reference signal generator
Initialization system parameter configuration；
602nd, phase reference signal generator is exported and expected resonance current phase signal frequency according to systematic parameter configuration
Equal, 180 ° of phase shift phase reference signal；
603rd, the resonance current Jing after the process of high-speed a/d change-over circuit that amplitude detection module is exported to resonance inverter enters
Row filtering, peakvalue's checking, obtain resonance current amplitude；
604th, whether phase-feedback signal handover module judges resonance current amplitude more than default pattern switching constant；
If the 6051, resonance current amplitude is less than pattern switching constant, phase-feedback signal handover module exports total letter lock
The driving pulse reference signal of phase ring output is used as phase-feedback signal.
If the 6052, resonance current amplitude is more than pattern switching constant, phase-feedback signal handover module is exported through zero phase
The phase signal of the resonance current after the detection of position is used as phase-feedback signal.
606th, all-digital phase-locked loop is exported according to phase reference signal generator phase reference signal and phase feedback letter
Phase difference between the phase-feedback signal of number handover module output quickly adjusts the driving pulse ginseng of all-digital phase-locked loop output
The frequency and phase place of signal are examined, and then changes the frequency and phase place of phase-feedback signal；
607th, all-digital phase-locked loop judges that phase-feedback signal is equal with phase reference signal frequency, phase difference is zero or often
Number, and enters lock-out state so that driving pulse generation module export, phase difference equal with phase reference signal frequency be zero or
The output pulse of constant.
Embodiment 7
A kind of resonance current phase control method is embodiments provided, as shown in Figure 10, based on above-mentioned resonance
Current phase controller, including：
701st, according to resonance inverter operating condition, all-digital phase-locked loop and phase reference signal are sent out by communication module
The parameter of raw device is configured；
702nd, according to said system parameter configuration, phase reference signal generator is exported and expected resonance current phase signal
Frequency is equal, the phase reference signal of 180 ° of phase shift；
703rd, resonance inverter output current is input to resonance current phase controller, Jing by high-speed a/d change-over circuit
After amplitude detection module filtered, peakvalue's checking, resonance current amplitude and the default pattern of phase-feedback signal handover module are obtained
Switching constant is compared, and when resonance current amplitude is less than pattern switching constant, resonance current phase controller works in voltage
Phase tracking mode, on the contrary resonance current amplitude be less than pattern switching constant when, resonance current phase controller works in electric current
Phase tracking mode；
704th, when resonance current phase controller works in voltage-phase tracing mode, the phase feedback of all-digital phase-locked loop
Signal is the driving pulse reference signal of all-digital phase-locked loop output, and all-digital phase-locked loop is by detecting input phase reference signal
With the phase difference of phase-feedback signal, controlled by loop Closed loop track, all-digital phase-locked loop rapidly enters lock-out state, now
All-digital phase-locked loop output driving pulse reference signal is equal with phase reference signal frequency, opposite in phase；
705th, with resonance inverter startup work, resonance inverter output current amplitude can gradually increase, when amplitude inspection
When surveying the resonance current amplitude of module output more than the default pattern switching constant of phase-feedback signal handover module, through zero phase
Resonance current phase signal after the detection of position is automatically selected as the phase-feedback signal of all-digital phase-locked loop, and digital phase discriminator is defeated
Go out phase error signal and step occurs, resonance current phase controller experience switches to current phase from voltage-phase tracing mode
The transient process of tracing mode, all-digital phase-locked loop quickly will quickly be again introduced into lock-out state, now resonance inverter output
Resonance current phase place is equal with phase reference signal frequency, opposite in phase.
Above-mentioned resonance current phase control method is insensitive for resonance inverter load parameter, controller parameter design letter
It is single, flexible, under synchronizing clock signals effect, multiphase can be used for based on the resonance current phase control method of all-digital phase-locked loop
The precise control of each phase resonance current phase or phase difference in resonance inverter power-supply system.
Resonance current phase controller and method based on all-digital phase-locked loop can use Verilog HDL Hardware description languages
Speech programming realization on FPGA.
Embodiment 8
A kind of resonance current phase control system is embodiments provided, as shown in figure 11, including PC control
Terminal 801, resonance current phase controller 802 as above, resonance inverter 803；
The connection resonance current of PC control terminal 801 phase controller 802；
Resonance current phase controller 802 connects resonance inverter 803.
Preferably,
PC control terminal 801 is specially the parameter configuration device of resonance current phase controller 802, for resonance electricity
The parameter of stream phase controller 802 is configured.
PC control terminal 801 passes through resonance current phase of the resonance current phase controller 802 to resonance inverter 803
Position is locked.
The characteristics of present invention has following：Using containing random walk filtering, the control of change mould and from the new of proportional plus integral control
Type all-digital phase-locked loop devises resonance current phase controller, can complete resonance inverter output electricity according to resonance current amplitude
, to preset phase reference signal from motion tracking, running is stable and reliable, the floating closed-loop control of phase place for stream phase place
All it is to complete during the automatic locking tracking of phaselocked loop, current phase is controlled without having to worry about load parameter difference
Affect.In addition, resonance current phase controller can be realized to resonance current phase controller by RS-232 serial communication modulars
The flexible configuration of inner parameter, while resonance current phase controller performance is improved, has widened resonance current phase controlling
Device is suitable for frequency range, and one kind is provided very to carry out medium-high frequency multiphase resonance current phase place or phase difference digitlization precise control
Good technical solution.
Those skilled in the art can be understood that, for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, will not be described here.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with
Realize by another way.For example, device embodiment described above is only schematic, for example, the division of unit,
It is only a kind of division of logic function, there can be other dividing mode when actually realizing, such as multiple units or component can be with
With reference to or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, it is shown or discussed
Coupling each other or direct-coupling or communication connection can be INDIRECT COUPLING by some interfaces, device or unit or
Communication connection, can be electrical, mechanical or other forms.
Can be as the unit of separating component explanation or may not be physically separate, show as unit
Part can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple networks
On unit.Some or all of unit therein can according to the actual needs be selected to realize the purpose of this embodiment scheme.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.Above-mentioned integrated list
Unit both can be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or used
When, during a computer read/write memory medium can be stored in.Based on such understanding, technical scheme is substantially
The part for contributing to prior art in other words or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server, or network equipment etc.) performs the complete of each embodiment methods described of the invention
Portion or part steps.And aforesaid storage medium includes：USB flash disk, portable hard drive, read-only storage (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
The above, above example only to illustrate technical scheme, rather than a limitation；Although with reference to front
State embodiment to be described in detail the present invention, it will be understood by those within the art that：It still can be to front
State the technical scheme described in each embodiment to modify, or equivalent is carried out to which part technical characteristic；And these
Modification is replaced, and does not make the spirit and scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution.
Claims (10)
1. a kind of resonance current phase controller based on all-digital phase-locked loop, it is characterised in that including all-digital phase-locked loop, phase
Position reference signal generator, amplitude detection module, phase-feedback signal handover module and driving pulse generation module；
The output end of the phase reference signal generator connects the all-digital phase-locked loop；
The all-digital phase-locked loop is connected with the phase-feedback signal handover module, forms circuit loop；
The input of the phase-feedback signal handover module connects the amplitude detection module；
The driving pulse generation module connects the output end of the all-digital phase-locked loop.
2. resonance current phase controller according to claim 1, it is characterised in that also including communication module；
The communication module connects respectively the phase reference signal generator and the all-digital phase-locked loop.
3. resonance current phase controller according to claim 1, it is characterised in that the all-digital phase-locked loop includes number
Digit phase discriminator, random walk wave filter, modulus value K control module, PI controllers, change N values frequency divider and Clock dividers；
The Clock dividers connect the digital phase discriminator, the random walk wave filter, the PI controllers, the modulus value
K control modules and the change N value frequency dividers；
The digital phase discriminator connection random walk wave filter and the modulus value K control module；
The random walk wave filter connects respectively the output end of the modulus value K control module and the PI controllers；
The PI controllers connect respectively the output end and input of the change N value frequency dividers.
4. resonance current phase controller according to claim 3, it is characterised in that the digital phase discriminator is specially side
Along type flip-over type JK flip-flop.
5. resonance current phase controller according to claim 3, it is characterised in that include：
The random walk wave filter is filtered by the way of loop filtering；
The random walk wave filter is digital filter, for have 2K stage upwards-Down-counter, wherein K is described
The output valve of modulus value K controller.
6. resonance current phase controller according to claim 3, it is characterised in that the phase-feedback signal switches mould
Block is made up of comparator, d type flip flop and the first nor gate, the second nor gate, the 3rd nor gate and OR gate；
The comparator input terminal connects respectively the amplitude detection module and default constant, and output end connects the D triggerings
The input of device；
Two inputs of first nor gate connect respectively the Q ends of the driving pulse reference signal and the d type flip flop；
Two inputs of second nor gate connect respectively the non-ends of the Q of the current phase signal and the d type flip flop；
Two inputs of the 3rd nor gate connect respectively the output end and second nor gate of first nor gate
Output end, the output end of the 3rd nor gate exports the phase-feedback signal；
Two inputs of the OR gate connect respectively the driving pulse reference signal and the current phase signal, it is described or
The output end of door connects the Clock control end of the d type flip flop；
The low level reset terminal connection power supply VCC of the d type flip flop.
7. a kind of resonance current phase control method, based on resonance current phase place any one of in such as claim 1 to 6
Controller is performed, it is characterised in that included：
S1：The phase reference signal exported according to phase reference signal generator by all-digital phase-locked loop and phase-feedback signal
Phase difference between the phase-feedback signal of handover module output quickly adjusts the driving pulse of the all-digital phase-locked loop output
The frequency and phase place of reference signal, and then change the frequency and phase place of the phase-feedback signal；
S2：If the all-digital phase-locked loop judges that the phase-feedback signal is equal with the phase reference signal frequency, phase place
Difference is zero or constant, then into lock-out state so that driving pulse generation module is exported and the phase reference signal frequency phase
It is zero or the output pulse of constant Deng, phase difference.
8. resonance current phase control method according to claim 7, it is characterised in that step S1 is specially：
When detecting the phase reference signal rising edge by digital phase discriminator, set is exported, detect the phase feedback
During signal rising edge, output resets；
The phase error signal that the digital phase discriminator is exported is counted by random walk wave filter, output plus pulse or
Subtract pulse signal and give PI controllers；
Exported to the random walk wave filter by PI controllers plus pulse is subtracted pulse and processes, and draws frequency division value N；
The frequency division value N exported according to the PI controllers by the change N values frequency divider and work clock f of Clock dividers outputxIt is defeated
Go out symmetrical logical pulse square-wave signal.
9. resonance current phase control method according to claim 7, it is characterised in that also include before step S1：
By communication module all-digital phase-locked loop and phase reference signal generator are set according to resonance inverter operating condition
Systematic parameter configuration；
Exported and expected resonance current phase signal frequency according to the systematic parameter configuration by phase reference signal generator
The phase reference signal of equal, preset phase shift；
The resonance current Jing after the process of high-speed a/d change-over circuit exported to the resonance inverter by amplitude detection module is entered
Row filtering, peakvalue's checking, obtain resonance current amplitude；
Judge the resonance current amplitude whether more than default pattern switching constant by phase-feedback signal handover module；
If the resonance current amplitude is less than the pattern switching constant, exported by the phase-feedback signal handover module
The driving pulse reference signal of the all-digital phase-locked loop output is used as phase-feedback signal；
If the resonance current amplitude is more than the pattern switching constant, exported by the phase-feedback signal handover module
The phase signal of the resonance current after zero phase detection is used as phase-feedback signal.
10. a kind of resonance current phase control system, including resonance inverter, such as PC control terminal, claim 1 to 6
In any one of resonance current phase controller, it is characterised in that
The PC control terminal connects the resonance current phase controller；
The resonance current phase controller connects the resonance inverter.
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| CN108134758A (en) * | 2017-12-15 | 2018-06-08 | 清华大学 | A kind of magnetic resonance couples the time frequency combined synchronizing method of wireless portable communications system |
| CN108134758B (en) * | 2017-12-15 | 2020-04-28 | 清华大学 | Time-frequency joint synchronization method of magnetic resonance coupling wireless energy-carrying communication system |
| CN108333917B (en) * | 2018-01-22 | 2024-02-06 | 浙江大学 | Frequency division detector for feedback control of low-frequency electromagnetic vibration table system |
| CN108333917A (en) * | 2018-01-22 | 2018-07-27 | 浙江大学 | Frequency dividing detector for low-frequency electromagnetic vibration table system feedback control |
| CN111770597A (en) * | 2019-04-01 | 2020-10-13 | 无锡物华电子科技有限公司 | Frequency tracking method in frequency modulation and power regulation |
| CN110212655A (en) * | 2019-06-21 | 2019-09-06 | 天津大学 | Self-resonance, super-silent wireless power supply system based on Zero-cross comparator |
| CN112564700A (en) * | 2020-11-25 | 2021-03-26 | 中科融合感知智能研究院(苏州工业园区)有限公司 | Structured light projection scanning method and system based on digital phase-locked loop |
| CN112564700B (en) * | 2020-11-25 | 2023-06-27 | 中科融合感知智能研究院(苏州工业园区)有限公司 | Structured light projection scanning method and system based on digital phase-locked loop |
| CN112815938A (en) * | 2020-12-31 | 2021-05-18 | 中国电子科技集团公司第十三研究所 | Phase adjusting device and method applied to MEMS (micro-electromechanical systems) inertial device |
| CN112928827A (en) * | 2021-02-02 | 2021-06-08 | 湖北理工学院 | Control circuit and control method for automatic locking of resonant frequency of non-contact power supply device |
| CN112928827B (en) * | 2021-02-02 | 2023-08-18 | 湖北理工学院 | Control circuit and control method for automatic locking of resonance frequency of non-contact power supply device |
| CN113472368A (en) * | 2021-06-30 | 2021-10-01 | 杭州电子科技大学 | Multi-frequency-point maximum power control circuit of transmitting coil |
| CN113472368B (en) * | 2021-06-30 | 2022-04-22 | 杭州电子科技大学 | Multi-frequency-point maximum power control circuit of transmitting coil |
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