CN104914325A - Capacitor group internal connection mode identification and parameter setting method - Google Patents
Capacitor group internal connection mode identification and parameter setting method Download PDFInfo
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- CN104914325A CN104914325A CN201510216033.4A CN201510216033A CN104914325A CN 104914325 A CN104914325 A CN 104914325A CN 201510216033 A CN201510216033 A CN 201510216033A CN 104914325 A CN104914325 A CN 104914325A
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Abstract
The invention discloses a capacitor group internal connection mode identification method. By utilizing the number N of capacitor single bodies or modules obtained by automatic detection or manual set and a total capacitance C, obtained by carrying out charging and discharging on the capacitor group, of the capacitor group, identification is performed on a connection mode of the capacitor group internal capacitor single bodies or modules, and accordingly automatic setting of working voltages and working currents of the capacitor group is achieved. According to the capacitor group internal connection mode automatic identification method, automatic identification of the capacitor group internal connecting mode and automatic setting of related control parameters after changes of the number and/or the connection mode of the internal capacitor single bodies or modules can be achieved, on-site operation is not needed, and related information during the changes of the number and/or the connection mode of the capacitor group internal capacitor single bodies or modules and a change of capacitor group total capacitance is timely recorded.
Description
The application is April 27 2012 applying date, application number 201210128983.8, and denomination of invention is the divisional application of " capacitor set internal connection mode identification and parameter setting method ".
Technical field
The present invention relates to the capacitance group be made up of multiple electric capacity monomer or module connection in series-parallel, be specifically related to a kind of discrimination method being applicable to the capacitor set internal connection mode be made up of multiple electric capacity monomer or module connection in series-parallel.
Background technology
In recent years, with super capacitor be representative large bulk capacitance as energy storage device can the motor transmission system of four quadrant running can store motor regeneration run time produce regenerated energy and stored regenerated energy can be provided when motor powered is run, power consumption can be reduced, cut down power peak, as emergency power pack etc., therefore at elevator, crane, application in the industries such as electric motor car progressively expands, as: Chinese invention patent mandate instructions CN1984831B (application number: CN200580023344.3, authorize day: on Dec 08th, 2010) and Chinese invention patent application instructions CN101817471A (application number: CN201010156180.4, publication date: on 09 01st, 2010).
For application person, the electric capacity of its practical application is normally by the capacitance group of multiple electric capacity monomer or module composition, each electric capacity monomer or module have its rated capacity, rated voltage and rated current, must guarantee to be applied to rated voltage and rated current that voltage and current that voltage in capacitance group and electric current produce on each electric capacity monomer or module is no more than each electric capacity monomer or module like this when applying capacitance group, thus ensure the safety of whole capacitance group.Due to the rated capacity of safe voltage in capacitance group and electric current and each electric capacity monomer or module can be put on, the connected mode of rated voltage and rated current and each electric capacity monomer or module is closely related with quantity, and in engineering practice the rated capacity of each electric capacity monomer or module, rated voltage and rated current are normally known, the connected mode of electric capacity monomer or module and quantity then can change in certain occasion, capacitance group as being applied to elevator may adjust the capacity of capacitance group by the quantity increasing and decreasing electric capacity monomer or module according to the actual passenger flow situation of elevator, now with regard to needing, the correlation parameter of capacitance group in system is modified.
For the amendment of capacitance group correlation parameter, can adopt and directly revise in related software, then the software after compiling again programming processor (as DSP, MCU etc.) mode realized, but this alter mode exist complex operation step, spended time long, to operating personnel require higher, be unfavorable for the shortcoming such as execute-in-place and software rights management.
In addition, for the capacitance group in use, the electric capacity monomer of capacitance group or module number and actual capacitance may change: a kind of be cause the actual capacitance of capacitance group to change because of the inefficacy of electric capacity monomer or module and and then lead to system abnormity, this situation can affect the actual functional capability of capacitance group usually, need to carry out process in time with the generation avoiding generation accident, another kind of then be cause the electric capacity of capacitance group and/or electric capacity monomer or module number to change by extraneous factor, wiring as electric capacity monomer or intermodule the connection caused such as to loosen and disconnects, or because of partition capacitance monomer or module number people for a change etc., this situation capacitance group does not occur extremely and system can normally realize its original function after amendment correlation parameter, but usually wish to record for future reference readding to this change.No matter be occur which kind of change above-mentioned, all need to carry out automatic Identification to the internal capacitance monomer of capacitance group or the connection of module and quantity, and and then Lookup protocol is carried out to correlation parameter.
Therefore, develop a kind of can carry out automatic Identification to capacitance group internal capacitance monomer or module number and connected mode and and then its correlation parameter of Lookup protocol, simultaneously overcome complex operation step that on-the-spot alter mode exists, spended time long, operating personnel are required that higher, to be unfavorable for the shortcoming such as execute-in-place and software rights management capacitor set internal connection mode identification and parameter setting method just become one and have major issue to be solved.
Summary of the invention
The object of the present invention is to provide a kind of can carry out automatic Identification to capacitance group internal capacitance monomer or module number and connected mode and and then the capacitor set internal connection mode identification of its correlation parameter of Lookup protocol and parameter setting method, the method can overcome complex operation step that on-the-spot alter mode exists, spended time long, to operating personnel require higher, be unfavorable for the shortcoming such as execute-in-place and software rights management, identification capacitance group internal capacitance monomer or module whether can also occur whether exception and quantity occur change simultaneously.
For achieving the above object, the technical scheme of capacitor set internal connection mode identification of the present invention and parameter setting method is: utilize the electric capacity monomer that forms described capacitance group or the connected mode of module number N and total capacitance C to described capacitance group internal capacitance monomer or module to carry out identification, described electric capacity monomer or module number N are by adopting the pilot signal automatically detecting each electric capacity monomer or module, any one mode in artificial setting and parameter read-in obtains the quantity N of described electric capacity monomer or module, the total capacitance C of described capacitance group is carrying out discharge and recharge to described capacitance group and is detecting on the basis of its terminal voltage variable quantity by calculating the total capacitance C of described capacitance group, described discrimination method comprises for the identification step of described capacitance group internal capacitance monomer or model calling mode: S1, exhaustive product equals all possible serial number S of described electric capacity monomer or module number N and the combination of number P in parallel, the calculating total capacitance C of the described capacitance group of the connected mode of S2, calculating each combination corresponding
k, k ∈ [1, m], wherein m is described electric capacity monomer or the serial number S of module number N and the quantity likely combined of number P in parallel, the calculating total capacitance C of the described capacitance group that S3, comparison step S2 obtain
kwith the total capacitance C of described capacitance group, and find out the calculating total capacitance C of the immediate described capacitance group with described total capacitance C
j, S4, according to the calculating total capacitance C of the immediate described capacitance group of described total capacitance C
jdetermine that the serial number S of described capacitance group combines with number P in parallel.Described discrimination method to the rule that described capacitance group internal capacitance monomer or model calling mode carry out identification is: S '=(N × C
0/ C)
1/2, S=Round (S '), P=N/S, or P '=(N × C/C
0)
1/2, P=Round (P '), S=N/P, wherein S and P is the serial number of described capacitance group and number in parallel respectively, C and C
0be the total capacitance of described capacitance group and the rated capacity of described electric capacity monomer or module respectively, Round (*) is bracket function.After the serial number S picking out described capacitance group at described capacitor set internal connection mode identification and parameter setting method combines with number P in parallel, also can arrange described capacitance group operating voltage and working current further: U=U
0s, I=I
0p, wherein U and I is operating voltage and the working current of described capacitance group respectively, U
0and I
0rated operational voltage and the rated operational current of described capacitance group internal capacitance monomer or module respectively; As described calculating total capacitance C
jwhen being greater than a certain threshold value with the difference of described total capacitance C, then judging that described capacitance group is abnormal, generate abnormal signal; As S and S ' difference and/or the difference of P and P ' when being greater than a certain threshold value, or when any one is non-integer in P and S, then judges that described capacitance group is abnormal, generate abnormal signal; When the total capacitance C of described capacitance group this result and last time result difference be greater than a certain threshold value and described electric capacity monomer or module number N is constant or this result of the total capacitance C of described capacitance group and last time result difference be not more than a certain threshold value and described electric capacity monomer or module number N change time, then judge that described capacitance group is abnormal, generate abnormal signal; When the total capacitance C of described capacitance group this result and last time result difference be greater than a certain threshold value and described electric capacity monomer or module number N change time, based on the total capacitance C of described capacitance group after change and described electric capacity monomer and module number N, take as under type is done to judge further: mode 1: take step 1 ~ 3 as described in claim 4 obtain with as described in total capacitance C immediate as described in the calculating total capacitance C of capacitance group
jif, described calculating total capacitance C
ja certain threshold value is not more than with the difference of described total capacitance C, then judge that monomer or the module number of described capacitance group change, function is normal, and the serial number S utilizing step 4 described in claim 4 to redefine described capacitance group combines with number P in parallel, described capacitance group operating voltage and working current is reset with number P in parallel based on new serial number S, otherwise judge that described capacitance group is abnormal, generate abnormal signal; Mode 2: take rule described in claim 5 to calculate S, S ' and P or P, P ' and S, if S and S ' difference and/or the difference of P and P ' is not more than a certain threshold value and P and S is integer, then judge that monomer or the module number of described capacitance group change, function is normal, and reset described capacitance group operating voltage and working current based on the serial number S calculated with number P in parallel, otherwise judge that described capacitance group is abnormal, generate abnormal signal.Described threshold value is the constant constant value preset, or according to one or more in the total capacitance C of the terminal voltage detecting precision of described capacitance group, described electric capacity monomer or module number N and described capacitance group and the variable changed; When result of determination be the monomer of described capacitance group or module number changes, function is normal time, record the monomer of described capacitance group or module number, connected mode, serial number S and one or more current in number P in parallel, total capacitance C and last time identification result, or the date and time of record last time and this identification further.
The beneficial effect that the present invention can reach is:
A) change of automatic Identification capacitance group internal capacitance monomer or module number and/or connected mode;
B) change at capacitance group internal capacitance monomer or module number and/or connected mode and automatically capacitance group correlation parameter is arranged;
C) effectively overcome complex operation step that on-the-spot alter mode exists, spended time long, to operating personnel require higher, be unfavorable for the shortcoming such as execute-in-place and software rights management;
D) effectively whether identification capacitance group internal capacitance monomer or module occur whether exception and quantity occur change;
E) relevant information when in time record capacitance group internal capacitance monomer or module number and/or connected mode change and the change of capacitance group total capacitance.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and embodiment, the present invention is further detailed explanation:
Fig. 1 be capacitor set internal connection mode identification of the present invention and parameter setting method apply a kind of topology diagram of capacitance group;
Fig. 2 be capacitor set internal connection mode identification of the present invention and parameter setting method apply the another kind of topology diagram of capacitance group.
Fig. 3 is a schematic implementing procedure figure of capacitor set internal connection mode identification of the present invention and parameter setting method.
Embodiment
In actual applications, capacitance group is all combined through connection in series-parallel by the electric capacity monomer of same size or module, and its topological structure can be divided into first connect rear parallel-connection structure mode and rear cascaded structure mode first in parallel as shown in Figure 2 as shown in Figure 1 usually.From Fig. 1 and Fig. 2, the serial number S of capacitance group, number P in parallel and electric capacity monomer or module number N then meet following condition:
N＝P·S (1)
The total capacitance C that can be obtained capacitance group by electric capacity connection in series-parallel computing formula is:
C＝C
0·P/S (2)
Wherein, C
0for the electric capacity monomer of capacitance group or the electric capacity of module number.
Capacitor set internal connection mode identification of the present invention and parameter setting method are applicable to capacitance group in above-mentioned explanation, topological structure as shown in Figure 1 or 2 simultaneously.
Embodiment one
The core of capacitor set internal connection mode identification of the present invention and parameter setting method is to utilize the electric capacity monomer that forms described capacitance group or the connected mode of module number N and total capacitance C to described capacitance group internal capacitance monomer or module to carry out identification, and the relevant information of the automatic setting of correlation parameter, the electric capacity monomer determining described capacitance group or module number N and total capacitance C reason of changes and record change generation front and back is being carried out based on identification result, its implementation process comprises following content:
√ obtains electric capacity monomer or the module number N of described capacitance group.
Whether possess pilot signal according to the electric capacity monomer of described capacitance group or module, the acquisition of its electric capacity monomer or module number N can be taked as any one under type:
Mode 1: for the electric capacity monomer or the module that form capacitance group, in order to ensure use safety, usually pilot signal all can be provided for control system, design good control system and can monitor each electric capacity monomer or module, as the most frequently used monitoring temperature signal, this signal is produced by a thermo-sensitive resistor usually, can obtain the temperature of corresponding capacitance monomer or module after suitably processing.Control system can pick out electric capacity monomer or the module number N of capacitance group by the monitoring temperature signal monitoring each electric capacity monomer or module;
Mode 2: for the electric capacity monomer or the module that do not provide pilot signal, can adopt the modes such as manual input mode (as: cross-over connection setting, dial-up dish etc.), communications setting to make control system obtain quantity N.
√ calculates capacitance group capacity C
Charge or discharge are carried out to capacitance group, while integration is carried out to charging and discharging currents, record the terminal voltage variation delta U of capacitance group, then utilize following formula to calculate the total capacitance C of capacitance group:
In formula, i is the electric current flowing through capacitance group.
It is to be noted, when carrying out the charge or discharge of above-mentioned capacitance group, except carrying out except discharge and recharge according to the usual manner of capacitance group, can also adopt in Fixed Time Interval, fixing charging and discharging currents or these three kinds of modes of fixed voltage variable quantity any one or multiplely carry out charge and discharge control, improve accuracy of detection by this, and then improve the result of calculation degree of accuracy of capacitance group C.
Can be calculated the total capacitance C of capacitance group according to formula (3) after discharge and recharge terminates.For improving the result of calculation degree of accuracy of capacitance group C, above-mentioned charge and discharge process can also be repeated, and utilize the repeated detection result obtained repeatedly calculate after using its mean value as final capacitance group C.
√ calculates serial number S and number P in parallel
Utilize the electric capacity monomer or module number N and total capacitance C that obtain in above-mentioned steps, calculate the serial number S of capacitance group and number P in parallel according to any one in the following two kinds method:
Method 1:
Be divided by by formula (1) (2) and obtain:
Through arranging, can obtain:
S’＝(N·C
0/C)
1/2(5)
The serial number S of capacitance group is obtained after S ' being carried out following rounding operation:
S＝Round(S’) (6)
Convolution (1) and (6) can obtain the number P in parallel of capacitance group:
P＝N/S (7)
Method 2:
Reference method 1, is easy to obtain the serial number S of following capacitance group and number P in parallel:
P’＝(N·C/C
0)
1/2，P＝Round(P’)，S＝N/P (8)
The identification of √ capacitance group duty
According to the composition electric capacity monomer of capacitance group or module and connection thereof, the duty of capacitance group can be divided into following three kinds:
Normally, the total capacitance C of electric capacity monomer or module number N and capacitance group remains unchanged, and is referred to as system normal for state a, electric capacity monomer or module and connection thereof;
State b, composition one or more electric capacity monomer of capacitance group or Module Fail and/or its connect occur abnormal (as short circuit, open circuit etc.) and/or pilot signal or its Signal transmissions to control system occur abnormal, show as the electric capacity monomer that picks out or module number N is constant but the total capacitance C of capacitance group changes or electric capacity monomer or module number N changes but the total capacitance C of capacitance group is constant or the total capacitance C of electric capacity monomer or module number N and capacitance group changes simultaneously but do not mate between the two, by this kind, because system occurs abnormal, situation that is that cause is referred to as system exception,
State c, composition each electric capacity monomer of capacitance group or functions of modules and connection normal, but carry out increasing or reducing to its electric capacity monomer or module because of certain reason, thus cause its quantity N and total capacitance C all to change, but the quantity N after change and total capacitance C matches, and this kind of situation is referred to as quantity changes, function is normal.
The judgement of " change " in above-mentioned state can adopt current results and last time result difference and certain threshold value between magnitude relationship realize.
The electric capacity monomer of capacitance group or module number N with the decision method whether total capacitance C mates are: when recalculating S, S according to formula (5) ~ formula (8) ' and P or P, P ' and S, if S and S ' difference and/or the difference of P and P ' be not more than a certain threshold value and P and S is integer time, judge that electric capacity monomer or the module number N and total capacitance C of capacitance group match, otherwise be judged to not mate.
In above-mentioned capacitance group duty, as long as the total capacitance C of the electric capacity monomer picked out or module number N and capacitance group remains unchanged, get final product decision-making system normal, be in state a, stress the decision method for state b and state c below.For the judgement of state b and state c, can take in following method one or more:
Method 1: as S and S ' difference and/or the difference of P and P ' when being greater than a certain threshold value, or when any one is non-integer in P and S, then judges that described capacitance group is abnormal, generate abnormal signal.
Method 2: when the total capacitance C of described capacitance group this result and last time result difference be greater than a certain threshold value and described electric capacity monomer or module number N constant, or this result of the total capacitance C of described capacitance group and last time result difference be not more than a certain threshold value and described electric capacity monomer or module number N change time, then judge that described capacitance group is abnormal, generate abnormal signal.
Method 3: when the total capacitance C of described capacitance group this result and last time result difference be greater than a certain threshold value and described electric capacity monomer or module number N change time, based on the total capacitance C of described capacitance group after change and described electric capacity monomer and module number N match, then judge that described capacitance group is in state c, otherwise be in state b, generate abnormal signal.
Above-mentioned threshold value is the constant constant value preset, or according to one or more in the total capacitance C of the terminal voltage detecting precision of described capacitance group, described electric capacity monomer or module number N and described capacitance group and the variable changed.
√ parameter calculates and arranges
After the serial number S picking out described capacitance group at described capacitor set internal connection mode identification and parameter setting method combines with number P in parallel, if it is determined that the in running order c of capacitance group, then according to the following formula described capacitance group operating voltage and working current are arranged:
U＝U
0·S，I＝I
0·P
Wherein U and I is operating voltage and the working current of described capacitance group respectively, U
0and I
0rated operational voltage and the rated operational current of described capacitance group internal capacitance monomer or module respectively.
It is to be noted, when carrying out the arranging of voltage and current parameter U and I of capacitance group, except the quantity that will consider the inner elevator monomer of capacitance group or module and connected mode, also should consider system at other restrictive conditions, as the electrical capacity etc. of the charge-discharge circuit of capacitance group.
√ relevant information record
When capacitance group changes (as monomer or module number N, total capacitance C, connected mode etc.), the monomer of capacitance group described in control system record or module number, connected mode, serial number S and one or more current in number P in parallel, total capacitance C and last time identification result, or the date and time of record last time and this identification further, for use in the inspection etc. to capacitance group change situation.
Figure 3 shows that a schematic implementing procedure figure of capacitor set internal connection mode identification of the present invention described in embodiment one and parameter setting method, mainly comprise the steps:
Step1: when implementing, first needs the monomer or the module number N and total capacitance C that obtain capacitance group;
Step2: judge whether the monomer of capacitance group or module number N change, if the monomer of capacitance group or module number N do not change, proceed to Step3, otherwise proceed to Step5;
Step3: judge whether the total capacitance C of capacitance group changes, if the total capacitance C of capacitance group does not change, proceeds to Step4, otherwise proceeds to Step6;
Step4: judge that capacitance group is in state a, namely system is normal;
Step5: judge whether the total capacitance C of capacitance group changes, if the total capacitance C of capacitance group does not change, proceeds to Step6, otherwise proceeds to Step8;
Step6: judge that capacitance group is in state b, i.e. system exception, proceeds to Step7;
Step7: take necessary counter-measure, proceed to Step12;
Step8: calculate serial number S and number P in parallel based on new argument N and C;
Step9: judge whether the monomer of capacitance group or module number N mate with total capacitance C, if the monomer of capacitance group or module number N mate with total capacitance C, proceed to Step10, otherwise proceed to Step6;
Step10: judge that capacitance group is in state c, namely capacitance group monomer or module number N changes, function is normal, proceed to Step11;
Step11: serial number S and number P in parallel based on new capacitance group reset the correlation parameter of capacitance group, proceed to Step12;
Step12: relevant information record.
Embodiment two
Embodiment two is similar to parameter setting method to the capacitor set internal connection mode identification of embodiment one, and the two difference is the decision method whether the serial number S of capacitance group and the computing method of number P in parallel and the electric capacity monomer of capacitance group or module number N mate with total capacitance C.
Only be illustrated with regard to embodiment two and not existing together of embodiment one below.
In the present embodiment, when electric capacity monomer or the module number N and total capacitance C of known capacitance group, serial number S is as follows with the computing method of number P in parallel:
S1, exhaustive product equal all possible serial number S of described electric capacity monomer or module number N and the combination of number P in parallel;
The calculating total capacitance C of the described capacitance group of the connected mode of S2, calculating each combination corresponding
k, k ∈ [1, m], wherein m is described electric capacity monomer or the serial number S of module number N and the quantity likely combined of number P in parallel;
The calculating total capacitance C of the described capacitance group that S3, comparison step S2 obtain
kwith the total capacitance C of described capacitance group, and find out the calculating total capacitance C of the immediate described capacitance group with described total capacitance C
j;
S4, according to the calculating total capacitance C of the immediate described capacitance group of described total capacitance C
jdetermine that the serial number S of described capacitance group combines with number P in parallel.
In the present embodiment, the electric capacity monomer of capacitance group or module number N with the decision method whether total capacitance C mates are: as described calculating total capacitance C
jwhen being not more than a certain threshold value with the difference of described total capacitance C, judging that the electric capacity monomer of capacitance group or module number N and total capacitance C match, otherwise be judged to not mate.Described threshold value is the constant constant value preset, or according to one or more in the total capacitance C of the terminal voltage detecting precision of described capacitance group, described electric capacity monomer or module number N and described capacitance group and the variable changed.
Claims (4)
1. capacitor set internal connection mode identification and a parameter setting method, is characterized in that, utilizes the electric capacity monomer of the described capacitance group of composition or the connected mode of module number N and total capacitance C to described capacitance group internal capacitance monomer or module to carry out identification;
The total capacitance C of described capacitance group is carrying out discharge and recharge to described capacitance group and is detecting on the basis of its terminal voltage variable quantity by calculating the total capacitance C of described capacitance group;
When this result of calculation of the total capacitance C of described capacitance group and the difference of last computation result be greater than a certain threshold value and described electric capacity monomer or module number N is constant or this result of calculation of the total capacitance C of described capacitance group and the difference of last computation result are not more than a certain threshold value and described electric capacity monomer or module number N change time, then judge that described capacitance group is abnormal, generate abnormal signal.
2. capacitor set internal connection mode identification and parameter setting method according to claim 1, it is characterized in that, described electric capacity monomer or module number N are the quantity N by adopting any one mode in the pilot signal automatically detecting each electric capacity monomer or module, artificial setting and parameter read-in to obtain described electric capacity monomer or module.
3. capacitor set internal connection mode identification and parameter setting method according to claim 1, it is characterized in that, described threshold value is the constant constant value preset, or according to one or more in the total capacitance C of the terminal voltage detecting precision of described capacitance group, described electric capacity monomer or module number N and described capacitance group and the variable changed.
4. capacitor set internal connection mode identification and parameter setting method according to claim 1, it is characterized in that, when the total capacitance C of described capacitance group and/or its electric capacity monomer or module number N change, one or more with number P in parallel, total capacitance C of the electric capacity monomer of described capacitance group before and after record change occurs or module number, connected mode, serial number S, or there is the date and time of front and back in record change further.
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104833877B (en) | 2017-09-29 |
| CN104833877A (en) | 2015-08-12 |
| CN103376375B (en) | 2015-10-28 |
| CN103376375A (en) | 2013-10-30 |
| CN104914325B (en) | 2017-07-11 |
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