CN106486999B - A kind of peak efficiency operating point register control and method - Google Patents
A kind of peak efficiency operating point register control and method Download PDFInfo
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- CN106486999B CN106486999B CN201610932947.5A CN201610932947A CN106486999B CN 106486999 B CN106486999 B CN 106486999B CN 201610932947 A CN201610932947 A CN 201610932947A CN 106486999 B CN106486999 B CN 106486999B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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Abstract
A kind of peak efficiency operating point register control, the peak efficiency operating point register control #J obtains the input signal aj of channel circuit #J from DC bus, the output signal bj of channel circuit #J is obtained from load #J, provide the control signal of switched inductors branch #J and single tube energy storage branch #J in channel circuit #J, i.e. duty ratio Dj (k) and duty ratio Daj (m) respectively according to the input signal aj of acquisition and output signal bj.The present invention provides a kind of can to obtain to maximum probability the control method that highest or secondary efficient peak efficiency operating point register control and peak efficiency operating point register control are realized to all load combinations in full-load range.
Description
Technical field
The present invention relates to single input and multi-outputs can present formula interface circuit, and especially raising single input and multi-output can present formula interface
The controller and method of circuit efficiency performance can be applied to the distribution of irregular LED array illumination system and direct-current grid
Formula load system.
Background technique
Single input and multi-output can present formula interface circuit suitable for complex load systematic difference occasion.Typical complex load
System includes the distributed terminator system of irregular LED array illumination system and direct-current grid.Single input and multi-output can be presented
Formula interface circuit can contain the inconsistency between load well.
Typical single input and multi-output can present formula interface circuit and be made of N number of identical channel circuit, and each channel is electric
The power section on road is made of 1 switched inductors branch and 1 single tube energy storage branch again.When the input voltage of some channel circuit
When voltage difference is not present with output voltage, only its switched inductors branch participates in work, electric energy is directly conveyed to corresponding
Load；And when the input voltage of the channel circuit and output voltage are there are when voltage difference, its switched inductors branch remains as phase
The load answered provides electric energy, but simultaneously because caused by voltage difference extra electric energy also can be back to input by single tube energy storage branch
End.The circuit proposed in patent of invention ZL 201310382254.X and ZL201310381708.1 is all single input and multi-output energy
Feedback formula interface circuit " member in family ".
In addition to power section, channel circuit further includes control section.But no matter patent of invention ZL
201310382254.X and ZL 201310381708.1 or technical paper " efficient plug-in type LED array driving interface electricity
The control method that road " (on July 15th, 2016 is published in " power supply journal " online) proposes is all without reference to " single input and multi-output energy
How feedback formula interface circuit in full-load range can obtain to maximum probability highest or secondary high efficiency to all load combinations "
Problem.
Summary of the invention
In order to overcome existing control method that can present formula interface circuit in full-load range without decree single input and multi-output
Highest or secondary efficient deficiency can be obtained to maximum probability to all load combinations, the present invention provides one kind in full load model
Enclose it is interior to all load combinations can obtain to maximum probability highest or secondary efficient peak efficiency operating point register control and
Method.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of peak efficiency operating point register control, the peak efficiency operating point register control #J is from DC bus
Place obtains the input signal aj of channel circuit #J, the output signal bj of channel circuit #J is obtained from load #J, according to acquisition
Input signal aj and output signal bj provides the control of switched inductors branch #J and single tube energy storage branch #J in channel circuit #J respectively
Signal processed, i.e. duty ratio Dj (k) and duty ratio Daj (m), the value of J are 1 to N, and the value of j is 1 to n；
The peak efficiency operating point register control #J positions sub-controller #J and monocycle sub-controller #J by operating point
Composition, the duty ratio Daj (m) of single tube energy storage branch #J is generated by operating point positioning sub-controller #J, and effect is to guarantee input
The discrete average value Aj (m) of signal aj is in minimum value, and the value of m is 1 to ∞；Switched inductors are generated by monocycle sub-controller #J
The duty ratio Dj (k) of branch #J, effect are to guarantee that the discrete average value Bj (k) of output signal bj is equal to reference signal Bref, k
Value be 1 to ∞.
Further, the operating point positioning sub-controller #J is by sampler #J, averager #J, minimum value determining device #J, number
According to latch #J, data stack #J1, data stack #J2 composition, the operating point positioning sub-controller #J works in peak efficiency
Point location controller #J starts or first carries out Scan orientation operation after restarting, then carries out recurrence positioning operation, and setting operating point is fixed
The Scan orientation duty cycle of seat controller #J is Tb=yTs and operating point positions the recurrence positioning work of sub-controller #J
Period is Tc=zTs, and Ts is the duty cycle of switched inductors branch #J and single tube energy storage branch #J, and y is the integer greater than zero, z
For the integer greater than zero.
Further, the monocycle sub-controller #J uses PWM controller (such as various PID controllers), setting monocycle
The duty cycle of controller #J is Ta=xTs, and Ts is the duty cycle of switched inductors branch #J and single tube energy storage branch #J, and x is
Integer greater than zero, current monocycle control duty cycle Ta (k) output duty cycle Dj (k) to switched inductors branch #J, open by control
The switching tube Mj in inductive branch #J is closed, the discrete average value Bj (k) of output signal bj is made to be equal to reference signal Bref.
In order to preferably coordinate the work of switched inductors branch #J and single tube energy storage branch #J, x < y and x < z can be set.
Further, the peak efficiency operating point register control #J uses digital signal processor.
The controller further includes central processing unit and bus, is managed collectively peak efficiency work by central processing unit
The working condition of point location controller #1 to peak efficiency operating point register control #N, central processing unit by bus to
Peak efficiency operating point register control #1 to peak efficiency operating point register control #N transmitting starting or instruction of restarting, highest
Efficiency work point location controller #1 to peak efficiency operating point register control #N also by bus to central processing unit
Transmit the jump signal of the discrete average value set A (m) of input signal, A (m)={ A1 (m), A2 (m) ..., An (m) }.
The input signal aj includes input voltage, input current and input power, and the output signal bj includes output
Voltage, output electric current and output power.
A kind of peak efficiency operating point position control method, the control method the following steps are included:
(1) after register control #J in peak efficiency operating point starts or restarts, operating point positioning sub-controller #J is introduced into
Scan orientation mode of operation, the duty cycle Tb=yTs of setting Scan orientation operation, Ts is switched inductors branch #J and single tube stores up
The duty cycle of energy branch #J, y are the integer greater than zero；
(2) further according to the data in the DC bus-bar voltage of setting and loading range configuration work point location sub-controller #J
Storehouse #J1, by one group using Δ Da as the duty cycle data at interval, i.e. Daj_max ..., Daj_min+ Δ Da, Daj_min are carried
Enter in data stack #J1；
(3) it is fixed to obtain Current Scan from data stack #J1 in order for operation Current Scan positioning duty cycle Tb (m)
The duty ratio Daj (m) of position duty cycle Tb (m) is simultaneously exported to single tube energy storage branch #J, controls opening in single tube energy storage branch #J
Pipe Maj is closed, the value of m is 1 to Y；
(4) after channel circuit #J the operation is stable, input signal aj is through the sampler # in operating point positioning sub-controller #J
The discrete value aj (m) of input signal is obtained after J processing；
(5) the discrete value aj (m) of input signal is obtained after the averager #J processing in operating point positioning sub-controller #J
The discrete average value Aj (m) of input signal；
(6) the discrete average value Aj (m) of input signal is through the minimum value determining device #J in operating point positioning sub-controller #J
Judgement, if judging Aj (m) for current minimum value, minimum value determining device #J triggers the data in operating point positioning sub-controller #J
It is current Daj (m), i.e. Daj_opt=Daj (m) that latch #J, which updates optimal duty ratio Daj_opt,；If judging, Aj (m) is not
Current minimum value, then data latches #J retains former optimal duty cycle data；
(7) if m=Y, show that entire Scan orientation operation is completed, the operating point positioning sub-controller #J, which will enter, to be returned
Positioning operation state；Otherwise, next Scan orientation duty cycle Tb (m+1) is run, m=m+1 is enabled, repeats step (3) extremely
(7)；
(8) the operating point positioning sub-controller #J enters the positioning operation state that returns, and setting returns the work of positioning operation
Make cycle T c=zTs, Ts is the duty cycle of switched inductors branch #J and single tube energy storage branch #J, and z is the integer greater than zero；
(9) according in the optimal duty ratio Daj_opt configuration work point location sub-controller #J in data latches #J
Data stack #J2, by one group using Δ Db as the duty cycle data at interval, i.e. Daj_opt ..., Daj_max- Δ Db, Daj_max
It is loaded into data stack #J2；
(10) current recurrence positioning duty cycle Tc (m) of operation obtains current return from data stack #J2 in order and determines
The duty ratio Daj (m) of bit period Tc (m) is simultaneously exported to single tube energy storage branch #J, controls the switching tube in single tube energy storage branch #J
The value of Maj, m are Y+1 to ∞；
(11) run next recurrences positioning duty cycle Tc (m+1), enable m=m+1, repeat step (10) to (11) up to
Peak efficiency operating point register control #J is restarted or channel circuit #J stops working.
Further, in the step (2), using Δ Da as the maximum duty cycle Daj_max at interval to minimum duty cycle Daj_
The duty cycle data of min is that { Daj_max ..., Daj_min+ Δ Da, Daj_min } is loaded into data stack #J1；The step
(3) in, the value sequence of duty ratio Daj (m) is as follows: Daj (1)=Daj_min, Daj (2)=Daj_min+ Δ Da ..., Daj
(Y)=Daj_max, Y=1+ (Daj_max-Daj_min)/Δ Da；In the step (9), by one group using Δ Db as interval most
The duty cycle data of excellent duty ratio Daj_opt to maximum duty cycle Daj_max, i.e., Daj_opt ..., Daj_max- Δ Db,
Daj_max } it is loaded into data stack #J2；In the step (10), the value sequence of duty ratio Daj (m) is as follows: Daj (Y+1)
=Daj_max, Daj (Y+2)=Daj_max- Δ Db ..., Daj (Y+Z)=Daj_opt ..., Daj (∞)=Daj_opt, Z=
1+(Daj_max-Daj_opt)/ΔDb。
Either: in the step (2), be loaded into duty cycle data sequence be Daj_min, Daj_min+ Δ Da ...,
Daj_max}；In the step (3), the value sequence of duty ratio Daj (m) are as follows: Daj (1)=Daj_max, Daj (2)=Daj_
Max- Δ Da ..., Daj (Y)=Daj_min, Y=1+ (Daj_max-Daj_min)/Δ Da；In the step (9), loading is accounted for
Sky is { Daj_opt ..., Daj_min+ Δ Db, Daj_min } than the content and sequence of data；In the step (10), duty ratio
The value sequence of Daj (m) are as follows: Daj (Y+1)=Daj_min, Daj (Y+2)=Daj_min+ Δ Db ..., Daj (Y+Z)=Daj_
Opt ..., Daj (∞)=Daj_opt, Z=1+ (Daj_opt-Daj_min)/Δ Db.
Further, in the base of peak efficiency operating point register control #1 to peak efficiency operating point register control #N
On plinth, then central processing unit and bus are added, peak efficiency operating point register control # is managed collectively by central processing unit
1 to peak efficiency operating point register control #N working condition, central processing unit are worked by bus to peak efficiency
Point location controller #1 to peak efficiency operating point register control #N transmitting starting or instruction of restarting, peak efficiency operating point are fixed
Level controller #1 to peak efficiency operating point register control #N transmits input signal to central processing unit also by bus
Discrete average value set A (m) jump signal, A (m)={ A1 (m), A2 (m) ..., An (m) }.
The workflow of the central processing unit is as follows:
(i) after single input and multi-output can present the booting of formula interface circuit, central processing unit successively starts peak efficiency operating point
Register control #1 to peak efficiency operating point register control #N, the 1st time for completing channel circuit #1 to channel circuit #N are fixed
Position work；
(ii) central processing unit enters wait state until the discrete average value set A (m) of input signal mutates.
(iii) when A (m) mutates, central processing unit successively judges An (m) ..., and whether A1 (m) mutates；If
An (m) does not mutate, then continues directly to judge the process whether An-1 (m) mutates；If An (m) mutates, first
Restart peak efficiency operating point register control #N, is further continued for judging the process whether An-1 (m) mutates；And so on it is straight
To judging whether A1 (m) mutates；If A1 (m) does not mutate, it is directly entered wait state；If A1 (m) mutates,
Then first restart peak efficiency operating point register control #1, enters back into wait state；
(iv) (ii) to (iii) is repeated.
Further, in the step (iii), successively judge the sequence of mutation for An (m) to A1 (m)；
Either: in the step (iii), successively judging the sequence of mutation for A1 (m) to An (m).
Technical concept of the invention are as follows: to ensure that single input and multi-output can present formula interface circuit in full-load range to institute
There are load combinations that can obtain to maximum probability highest or secondary high efficiency, proposes to use peak efficiency operating point in its channel circuit
Register control.In order to the switched inductors branch and single tube energy storage flow adaptation in channel circuit, peak efficiency operating point is fixed
Level controller positions sub-controller by operating point and monocycle sub-controller forms.According to the input and output signal of channel circuit,
Operating point positions the duty ratio of sub-controller adjustment single tube energy storage branch, and monocycle sub-controller adjusts the duty of switched inductors branch
Than finally realizing entire single input by way of run on highest or secondary efficiency operation point with enabling channel circuit maximum probability
Multi output can present the high efficiency of formula interface circuit.In peak efficiency operating point on the basis of register control, central processing is introduced
Device and bus can also derive a kind of peak efficiency work point-tracking method.
Beneficial effects of the present invention are mainly manifested in: peak efficiency operating point register control and method can further improve
Single input and multi-output can present the efficiency of formula interface circuit, especially can ensure that single input and multi-output in complex load systematic difference
Formula interface circuit, which can be presented, can obtain to maximum probability highest or secondary high efficiency to all load combinations in full-load range.
Detailed description of the invention
Fig. 1 is to present formula interface circuit block diagram using single input and multi-output of the invention.
Fig. 2 is inside composition block diagram of the invention.
Fig. 3 is the partial circuit diagram that formula interface circuit embodiment 1 can be presented using single input and multi-output of the invention.
Fig. 4 is 20 experimental results of the embodiment of the present invention 1 about channel circuit #1 efficiency in the case of seven kinds of different loads.
Fig. 5 is the circuit block diagram that formula interface circuit embodiment 2 can be presented using single input and multi-output of the invention.
Fig. 6 is the control flow chart of the embodiment of the present invention 2.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Embodiment 1
Referring to FIG. 1, FIG. 2 and FIG. 3, (J's takes the switched inductors branch #J that the channel circuit #J of the embodiment of the present invention 1 is used
Value 1 is made of to N) input capacitance Cij, inductance Lj, output capacitance Coj, N-MOS pipe Mj, and single tube energy storage branch #J is by diode
Dcj, capacitor Caj, coupling inductance Laj and Lbj, N-MOS pipe Maj, diode Dacj composition.One end of capacitor Cij simultaneously with it is straight
The one end for flowing the anode of bus, one end of coupling inductance Lbj and inductance Lj is connected, and the other end of inductance Lj is electric with output simultaneously
The one end for holding Coj and the one end for loading #J are connected, the other end of output capacitance Coj while the other end, N-MOS with load #J
The anode of the drain electrode of pipe Mj and diode Dcj are connected, the cathode of diode Dcj simultaneously with one end of capacitor Caj and couple
One end of inductance Laj is connected, and one end of the coupling inductance Laj and the other end of coupling inductance Lbj are Same Name of Ends relationship, coupling
The other end of inductance Laj is connected with the drain electrode of N-MOS pipe Maj, and the other end of the coupling inductance Laj is with coupling inductance Lbj's
The other end is different name end relationship, and the other end of the coupling inductance Lbj is connected with the cathode of diode Dacj, diode Dacj's
Anode simultaneously with the negative terminal of DC bus, the other end of capacitor Cij, the source electrode of N-MOS pipe Maj, capacitor Caj the other end, N-
The source electrode of metal-oxide-semiconductor is connected, the value 1 of j to n.
The peak efficiency operating point register control #J of the embodiment of the present invention 1 positions sub-controller #J and monocycle by operating point
Sub-controller #J composition.Operating point positions sub-controller #J and is locked by sampler #J, averager #J, minimum value determining device #J, data
Storage #J, data stack #J1, data stack #J2 composition.Monocycle sub-controller #J then uses incremental digital PID control device.Operating point is fixed
The workflow of seat controller #J and monocycle sub-controller #J are relatively independent.
The operating point positioning sub-controller #J of the embodiment of the present invention 1 is using the input current of channel circuit #J as input signal
Aj, and provide the control signal of single tube energy storage branch #J, i.e. the duty ratio Daj (m) of N-MOS pipe Maj.In peak efficiency operating point
After register control #J starts or restarts, operating point positioning sub-controller #J first carries out Scan orientation operation, then return and determine
Bit manipulation, shown in specific workflow such as step (1) to (11), wherein (1) to (7) belongs to Scan orientation operation, (8) extremely
(11) belong to recurrence positioning operation.
(1) after register control #J in peak efficiency operating point starts or restarts, operating point positioning sub-controller #J is introduced into
Scan orientation mode of operation, the duty cycle Tb=yTs of setting Scan orientation operation, Ts is switched inductors branch #J and single tube stores up
The duty cycle of energy branch #J, y are the integer greater than zero.
(2) further according to the DC bus-bar voltage of setting and loading range configuration data storehouse #J1, between being with Δ Da by one group
Every maximum duty cycle Daj_max to minimum duty cycle Daj_min duty cycle data, i.e. { Daj_max ..., Daj_min+ Δ
Da, Daj_min } it is loaded into data stack #J1.
(3) it is fixed to obtain Current Scan from data stack #J1 in order for operation Current Scan positioning duty cycle Tb (m)
The duty ratio Daj (m) of position duty cycle Tb (m) is simultaneously exported to single tube energy storage branch #J, controls the N- in single tube energy storage branch #J
Metal-oxide-semiconductor Maj；The value sequence of duty ratio Daj (m) is as follows: Daj (1)=Daj_min, Daj (2)=Daj_min+ Δ Da ...,
Daj (Y)=Daj_max, Y=1+ (Daj_max-Daj_min)/Δ Da, m value are 1 to Y.
(4) after channel circuit #J the operation is stable, obtained after input signal aj sampled device #J processing input signal from
Dissipate value aj (m).
(5) the discrete average value Aj of input signal is obtained after the averaged device #J processing of the discrete value aj (m) of input signal
(m)。
(6) the discrete average value Aj (m) of input signal through minimum value determining device #J judge, if judge Aj (m) for currently most
Small value, then it is current Daj (m) that minimum value determining device #J trigger data latch #J, which updates optimal duty ratio Daj_opt, i.e.,
Daj_opt=Daj (m)；If judging Aj (m) not for current minimum value, data latches #J retains former optimal duty cycle data.
(7) if m=Y, show that entire Scan orientation operation is completed, will enter and return positioning operation state；Otherwise, under operation
One Scan orientation duty cycle Tb (m+1) enables m=m+1, repeats (3) to (7).
(8) enter the positioning operation state that returns, setting returns the duty cycle Tc=zTs of positioning operation, and Ts is switch electricity
Feel the duty cycle of branch #J and single tube energy storage branch #J, z is the integer greater than zero.
(9) according to the optimal duty ratio Daj_opt configuration data storehouse #J2 in data latches #J, by one group with Δ Db
For interval optimal duty ratio Daj_opt to the duty cycle data of maximum duty cycle Daj_max, i.e. { Daj_opt ..., Daj_
Max- Δ Db, Daj_max } it is loaded into data stack #J2.
(10) current recurrence positioning duty cycle Tc (m) of operation obtains current return from data stack #J2 in order and determines
The duty ratio Daj (m) of position duty cycle Tc (m) is simultaneously exported to single tube energy storage branch #J, controls the N- in single tube energy storage branch #J
Metal-oxide-semiconductor Maj；The value sequence of duty ratio Daj (m) is as follows: Daj (Y+1)=Daj_max, Daj (Y+2)=Daj_max- Δ
Db ..., Daj (Y+Z)=Daj_opt ..., Daj (∞)=Daj_opt, Z=1+ (Daj_max-Daj_opt)/Δ Db, m take
Value is Y+1 to ∞.
(11) next recurrence positioning duty cycle Tc (m+1) is run, m=m+1 is enabled, repeats (10) to (11) until highest
Efficiency work point location controller #J is restarted or channel circuit #J stops working.
The monocycle sub-controller #J of the embodiment of the present invention 1 using the output electric current of channel circuit #J as output signal bj, if
The duty cycle of order ring controller #J is Ta=xTs, and Ts is the work of switched inductors branch #J and single tube energy storage branch #J
Period, x are the integer greater than zero, current monocycle control duty cycle Ta (k) output duty cycle Dj (k) to switched inductors branch #
The value of N-MOS pipe Mj, k in J, control switch inductive branch #J are 1 to ∞.
When DC bus-bar voltage is constant, in the collective effect of operating point positioning sub-controller #J and monocycle sub-controller #J
Under, the discrete average value Bj (k) that output signal bj had both may be implemented in the channel circuit #J of the embodiment of the present invention 1 is equal to reference signal
Bref, and can with maximum probability realize highest or secondary high efficiency.Fig. 4 is the pass of the embodiment of the present invention 1 in the case of seven kinds of different loads
In 20 experimental results of channel circuit #1 efficiency, specific test condition is as follows: DC bus-bar voltage 24V, exports electric current
100mA loads as 1 to 7 white light LEDs.As can be seen from Figure 4, the peak efficiency operating point register control #1 in full-load range
Really highest or secondary high efficiency are obtained while channel circuit #1 maximum probability can be enabled, its performance is better than fixed duty cycle in terms of efficiency
The conventional controller of Da1 (m).(content of the conventional controller about fixed duty cycle Da1 (m) can be detailed on July 15th, 2016
It is published in the technical paper " efficient plug-in type LED array driving interface circuit " of " power supply journal " online.)
Embodiment 2
Referring to Fig.1, Fig. 2, Fig. 3, Fig. 5 and Fig. 6, the embodiment of the present invention 2 is on the basis of the embodiment of the present invention 1, then adds
Central processing unit and bus are managed collectively peak efficiency operating point register control #1 to peak efficiency by central processing unit
The working condition of operating point register control #N, central processing unit pass through bus to peak efficiency operating point location control
Device #1 to peak efficiency operating point register control #N transmitting starting or instruction of restarting, peak efficiency operating point register control #1
The discrete average of input signal is transmitted to central processing unit also by bus to peak efficiency operating point register control #N
The jump signal of value set A (m), A (m)={ A1 (m), A2 (m) ..., An (m) }.The workflow of central processing unit such as step
(i) to shown in (iv).
(i) after single input and multi-output can present the booting of formula interface circuit, central processing unit successively starts peak efficiency operating point
Register control #1 to peak efficiency operating point register control #N, the 1st time for completing channel circuit #1 to channel circuit #N are fixed
Position work；
(ii) central processing unit enters wait state until the discrete average value set A (m) of input signal mutates.
(iii) when A (m) mutates, central processing unit successively judges whether An (m) to A1 (m) mutates.If An
(m) it does not mutate, then continues directly to judge the process whether An-1 (m) mutates；If An (m) mutates, first weigh
Peak efficiency operating point register control #N is opened, is further continued for judging the process whether An-1 (m) mutates.And so on until
Judge whether A1 (m) mutates.If A1 (m) does not mutate, it is directly entered wait state；If A1 (m) mutates,
First restart peak efficiency operating point register control #1, enters back into wait state.
(iv) (ii) to (iii) is repeated.
The embodiment of the present invention 2 has the ability of peak efficiency operating point tracking.When part of the load #1 into load #N is negative
When carrying mutation, corresponding peak efficiency operating point register control will be sent by bus to central processing unit corresponding
Abrupt information, central processing unit is yet by bus to corresponding peak efficiency work after being received and confirmed by abrupt information
Make point location controller and send reset command, corresponding channel circuit is made to recapture highest or secondary high efficiency.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Range should not be construed as being limited to the specific forms stated in the embodiments, and protection scope of the present invention is also and in this field skill
Art personnel conceive according to the present invention it is conceivable that equivalent technologies mean.
Claims (10)
1. a kind of peak efficiency operating point register control, it is characterised in that: the peak efficiency operating point register control #J
The input signal aj that channel circuit #J is obtained from DC bus obtains the output signal bj of channel circuit #J from load #J,
Switched inductors branch #J and single tube energy storage in channel circuit #J are provided respectively according to the input signal aj of acquisition and output signal bj
The control signal of branch #J, i.e. duty ratio Dj (k) and duty ratio Daj (m), the value of J are 1 to N, and the value of j is 1 to n；
The peak efficiency operating point register control #J is made of operating point positioning sub-controller #J and monocycle sub-controller #J,
The duty ratio Daj (m) of single tube energy storage branch #J is generated by operating point positioning sub-controller #J, effect is to guarantee input signal aj
Discrete average value Aj (m) be in minimum value, the value of m is 1 to ∞；Switched inductors branch #J is generated by monocycle sub-controller #J
Duty ratio Dj (k), effect be guarantee output signal bj discrete average value Bj (k) be equal to reference signal Bref, the value of k
It is 1 to ∞.
2. peak efficiency operating point as described in claim 1 register control, it is characterised in that: the operating point locator control
Device #J processed is by sampler #J, averager #J, minimum value determining device #J, data latches #J, data stack #J1, data stack #J2
Composition, the operating point positioning sub-controller #J are first swept after peak efficiency operating point register control #J starts or restarts
Positioning operation is retouched, then carries out recurrence positioning operation, sets the Scan orientation duty cycle of operating point positioning sub-controller #J as Tb
=yTs and operating point positioning sub-controller #J recurrence positioning the duty cycle be Tc=zTs, Ts be switched inductors branch #J and
The duty cycle of single tube energy storage branch #J, y are the integer greater than zero, and z is the integer greater than zero.
3. peak efficiency operating point as claimed in claim 1 or 2 register control, it is characterised in that: the monocycle control
Device #J uses PWM controller.
4. peak efficiency operating point as claimed in claim 1 or 2 register control, it is characterised in that: the peak efficiency work
Make point location controller #J using digital signal processor.
5. peak efficiency operating point as claimed in claim 1 or 2 register control, it is characterised in that: the peak efficiency work
Making point location controller further includes central processing unit and bus, is managed collectively peak efficiency operating point by central processing unit and determines
The working condition of level controller #1 to peak efficiency operating point register control #N, central processing unit pass through bus to highest
Efficiency work point location controller #1 to peak efficiency operating point register control #N transmitting starting or instruction of restarting, peak efficiency
Operating point register control #1 to peak efficiency operating point register control #N is transmitted also by bus to central processing unit
The jump signal of the discrete average value set A (m) of input signal, A (m)={ A1 (m), A2 (m) ..., An (m) }.
6. peak efficiency operating point as claimed in claim 1 or 2 register control, it is characterised in that: the input signal aj
Including input voltage, input current and input power, the output signal bj includes output voltage, output electric current and output work
Rate.
7. the control method that a kind of peak efficiency operating point as described in claim 1 register control is realized, it is characterised in that:
The control method the following steps are included:
(1) after register control #J in peak efficiency operating point starts or restarts, operating point positioning sub-controller #J is introduced into scanning
Positioning operation state, the duty cycle Tb=yTs of setting Scan orientation operation, Ts are switched inductors branch #J and single tube energy storage branch
The duty cycle of road #J, y are the integer greater than zero；
(2) further according to the data heap in the DC bus-bar voltage of setting and loading range configuration work point location sub-controller #J
Stack #J1, by one group using Δ Da as the duty cycle data at interval, i.e. Daj_max ..., Daj_min+ Δ Da, Daj_min are loaded into
In data stack #J1；
(3) operation Current Scan positioning duty cycle Tb (m) obtains Current Scan in order from data stack #J1 and positions work
Make the duty ratio Daj (m) of cycle T b (m) and export to single tube energy storage branch #J, controls the switching tube in single tube energy storage branch #J
The value of Maj, m are 1 to Y；
(4) after channel circuit #J the operation is stable, input signal aj is positioned through operating point at the sampler #J in sub-controller #J
The discrete value aj (m) of input signal is obtained after reason；
(5) the discrete value aj (m) of input signal is inputted after the averager #J processing in operating point positioning sub-controller #J
The discrete average value Aj (m) of signal；
(6) the discrete average value Aj (m) of input signal judges through the minimum value determining device #J in operating point positioning sub-controller #J,
If judging Aj (m) for current minimum value, the data that minimum value determining device #J is triggered in operating point positioning sub-controller #J are latched
It is current Daj (m), i.e. Daj_opt=Daj (m) that device #J, which updates optimal duty ratio Daj_opt,；If it is current for judging Aj (m) not
Minimum value, then data latches #J retains former optimal duty cycle data；
(7) if m=Y, show that entire Scan orientation operation is completed, the operating point positioning sub-controller #J, which will enter, returns positioning
Mode of operation；Otherwise, next Scan orientation duty cycle Tb (m+1) is run, m=m+1 is enabled, repeats step (3) to (7)；
(8) the operating point positioning sub-controller #J enters the positioning operation state that returns, and setting returns the work week of positioning operation
Phase Tc=zTs, Ts are the duty cycle of switched inductors branch #J and single tube energy storage branch #J, and z is the integer greater than zero；
(9) according to the data in the optimal duty ratio Daj_opt configuration work point location sub-controller #J in data latches #J
Storehouse #J2, by one group using Δ Db as the duty cycle data at interval, i.e., { Daj_opt ..., Daj_max- Δ Db, Daj_max } or
Person { Daj_opt ..., Daj_min+ Δ Db, Daj_min } is loaded into data stack #J2；
(10) operation is current returns positioning duty cycle Tc (m), and acquisition is current from data stack #J2 in order returns positioning week
The duty ratio Daj (m) of phase Tc (m) is simultaneously exported to single tube energy storage branch #J, controls the switching tube Maj, m in single tube energy storage branch #J
Value be Y+1 to ∞；
(11) next recurrence positioning duty cycle Tc (m+1) is run, m=m+1 is enabled, repeats step (10) to (11) until highest
Efficiency work point location controller #J is restarted or channel circuit #J stops working.
8. control method as claimed in claim 7, it is characterised in that: in the step (2), accounted for by the maximum at interval of Δ Da
The duty cycle data of sky ratio Daj_max to minimum duty cycle Daj_min is { Daj_max ..., Daj_min+ Δ Da, Daj_min }
It is loaded into data stack #J1；In the step (3), the value sequence of duty ratio Daj (m) is as follows: Daj (1)=Daj_min,
Daj (2)=Daj_min+ Δ Da ..., Daj (Y)=Daj_max, Y=1+ (Daj_max-Daj_min)/Δ Da；The step
(9) in, by one group using Δ Db as the duty cycle data of the optimal duty ratio Daj_opt to maximum duty cycle Daj_max at interval, i.e.,
{ Daj_opt ..., Daj_max- Δ Db, Daj_max } is loaded into data stack #J2；In the step (10), duty ratio Daj
(m) value sequence is as follows: Daj (Y+1)=Daj_max, Daj (Y+2)=Daj_max- Δ Db ..., Daj (Y+Z)=Daj_
Opt ..., Daj (∞)=Daj_opt, Z=1+ (Daj_max-Daj_opt)/Δ Db.
9. control method as claimed in claim 7, it is characterised in that: in the step (2), be loaded into the sequence of duty cycle data
For { Daj_min, Daj_min+ Δ Da ..., Daj_max }；In the step (3), the value sequence of duty ratio Daj (m) are as follows:
Daj (1)=Daj_max, Daj (2)=Daj_max- Δ Da ..., Daj (Y)=Daj_min, Y=1+ (Daj_max-Daj_
min)/ΔDa；In the step (9), be loaded into duty cycle data content and sequence for Daj_opt ..., Daj_min+ Δ Db,
Daj_min}；In the step (10), the value sequence of duty ratio Daj (m) are as follows: Daj (Y+1)=Daj_min, Daj (Y+2)=
Daj_min+ Δ Db ..., Daj (Y+Z)=Daj_opt ..., Daj (∞)=Daj_opt, Z=1+ (Daj_opt-Daj_min)/
ΔDb。
10. the control method as described in one of claim 7~9, it is characterised in that: in peak efficiency operating point location control
On the basis of device #1 to peak efficiency operating point register control #N, then central processing unit and bus are added, by centre
The working condition of device unified management peak efficiency operating point register control #1 to peak efficiency operating point register control #N is managed,
Central processing unit is by bus to peak efficiency operating point register control #1 to peak efficiency operating point register control #
N transmitting starting or instruction of restarting, peak efficiency operating point register control #1 to peak efficiency operating point register control #N
The jump signal of the discrete average value set A (m) of input signal, A (m)={ A1 are transmitted to central processing unit by bus
(m), A2 (m) ..., An (m) }, the workflow of the central processing unit is as follows:
(i) after single input and multi-output can present the booting of formula interface circuit, central processing unit successively starts peak efficiency work point location
Controller #1 to peak efficiency operating point register control #N completes the 1st positioning work of channel circuit #1 to channel circuit #N
Make；
(ii) central processing unit enters wait state until the discrete average value set A (m) of input signal mutates；
(iii) when A (m) mutates, central processing unit successively judges An (m) ..., and whether A1 (m) mutates；If An
(m) it does not mutate, then continues directly to judge the process whether An-1 (m) mutates；If An (m) mutates, first weigh
Peak efficiency operating point register control #N is opened, is further continued for judging the process whether An-1 (m) mutates；And so on until
Judge whether A1 (m) mutates；If A1 (m) does not mutate, it is directly entered wait state；If A1 (m) mutates,
First restart peak efficiency operating point register control #1, enters back into wait state；
(iv) (ii) to (iii) is repeated.
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