CN203071862U - Frequency conversion adjusting and testing device and frequency conversion driving system thereof - Google Patents
Frequency conversion adjusting and testing device and frequency conversion driving system thereof Download PDFInfo
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- CN203071862U CN203071862U CN 201320066935 CN201320066935U CN203071862U CN 203071862 U CN203071862 U CN 203071862U CN 201320066935 CN201320066935 CN 201320066935 CN 201320066935 U CN201320066935 U CN 201320066935U CN 203071862 U CN203071862 U CN 203071862U
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Abstract
The utility model discloses a frequency conversion adjusting and testing device and a frequency conversion driving system thereof. The frequency conversion adjusting and testing device is used for driving a motor device, and comprises an automatic adjusting device, a current control device and a measuring device, wherein the automatic adjusting device produces a current control parameter according to a preset control table, and the current control device produces a voltage command to the motor device according to the current control parameter; and the measuring device reads a motor feedback current value from the motor device, so as to obtain a current response curve, and then compares the current response curve with a preset current response curve to see whether they are similar. Thereby the testing process is repeated until a similar current response curve is obtained, and a current control parameter corresponding to the similar current response curve is set to be the best current control parameter, so that the motor device can be operated according to the best current control parameter.
Description
Technical field
The utility model relates to a kind of frequency conversion device for adjusting and measuring and frequency changing driving system thereof, particularly a kind of frequency conversion device for adjusting and measuring and the frequency changing driving system thereof that can adjust automatically the current control parameter of motor apparatus.
Background technology
Along with the evolution in epoch, the application of the frequency changing driving system with motor apparatus now more and more widely.Developed the converter plant that multiple motor apparatus and control motor apparatus now, to be applicable to various occasion.But in the prior art, the control parameter that converter plant has is fixed often, this preset control parameters normally research staff is surveyed motor apparatus in the laboratory and the optimal response that measures, allows motor apparatus should reach best practical usefulness under this preset control parameters.But when the actual use of frequency changing driving system, possible because the purposes of motor apparatus is different or the converter plant of collocation different vendor, and cause this preset control parameters can't show the best efficiency of frequency changing driving system.Only can adjust according to the speed parameter of motor apparatus in the prior art, therefore the efficient of adjusting is relatively poor, is not easy to show the best efficiency of motor apparatus.
Therefore, need utility model to go out a kind of frequency conversion device for adjusting and measuring and frequency changing driving system thereof, to solve the disappearance of prior art.
The utility model content
Main purpose of the present utility model is to provide a kind of frequency conversion device for adjusting and measuring, and it has the function that can adjust automatically the current control parameter of motor apparatus
Another purpose of the present utility model is to provide a kind of frequency changing driving system with above-mentioned frequency conversion device for adjusting and measuring.
For reaching above-mentioned purpose, the utility model provides a kind of frequency conversion device for adjusting and measuring, is used for driving a motor apparatus, and this frequency conversion device for adjusting and measuring comprises:
One current control device in order to produce a voltage commands to this motor apparatus, rotates to control this motor apparatus;
One measurement mechanism, this motor apparatus reads a motor feedback current value certainly; And
One automatic regulating apparatus electrically connects this current control device and this measurement mechanism, and in order to carry out a testing process, this automatic regulating apparatus comprises:
One stores the controlling value unit, in order to store a default control table;
One the order output unit, electrically connect this storage controlling value unit, in order to export a current control parameter according to this default control table, make this current control device according to this current control parameter to produce this voltage commands to this motor apparatus;
One tracer signal unit electrically connects this measurement mechanism, in order to record this motor feedback current value of this motor apparatus, to obtain a current response curve; And
Whether one comparison operation unit electrically connects this tracer signal unit, similar to a predetermined current response curve in order to analyze this first current response curve; Wherein, this order output unit can produce next current control parameter again according to this default control table, and makes this comparison operation unit repeat this testing process, until obtaining till the similar current response curve of this predetermined current response curve; At this moment, this comparison operation unit is set the corresponding current control parameter of this similar current response curve and is optimum current control parameter, and is stored in this storage controlling value unit, and this motor apparatus is operated according to this optimum current control parameter.
Above-mentioned frequency conversion device for adjusting and measuring, wherein this order output unit to produce a plurality of current control parameter in regular turn, allows this motor apparatus rotate to obtain a plurality of current response curves according to this default control table, comes to compare with this predetermined current response curve.
Above-mentioned frequency conversion device for adjusting and measuring, wherein this comparison operation unit confirms further whether the stored current control parameter in this storage controlling value unit all tested, and the current control parameter of choosing the current response correspondence of a margin of error minimum wherein is to be considered as this optimum current control parameter.
Above-mentioned frequency conversion device for adjusting and measuring, wherein this storage controlling value unit further stores the current control parameter of the current response correspondence of this margin of error minimum.
For reaching above-mentioned purpose, the utility model also provides a kind of frequency changing driving system, and it comprises:
One motor apparatus; And
One frequency conversion device for adjusting and measuring is electrically connected at this motor apparatus, is used for driving this motor apparatus, and this frequency conversion device for adjusting and measuring comprises:
One automatic regulating apparatus, in order to according to a default control table to produce a current control parameter;
One current control device electrically connects this automatic regulating apparatus, in order to according to this current control parameter to produce a voltage commands to this motor apparatus, control this motor apparatus and rotate; And
One measurement mechanism electrically connects this automatic regulating apparatus, reads a motor feedback current value in order to this motor apparatus certainly; Wherein this automatic regulating apparatus is further carried out a testing process, records this motor feedback current value, and to obtain a current response curve, relatively whether this current response curve is similar to a predetermined current response curve again; Wherein, this automatic regulating apparatus can produce next current control parameter again according to this default control table, and repeats this testing process, until obtaining till the similar current response curve of this predetermined current response curve; At this moment, this automatic regulating apparatus is set current control parameter that should similar current response curve is optimum current control parameter, and this motor apparatus is operated according to this optimum current control parameter.
Above-mentioned frequency changing driving system, wherein this automatic regulating apparatus comprises:
One stores the controlling value unit, in order to store this default control table;
One the order output unit, electrically connect this storage controlling value unit, in order to according to this default control table to export a plurality of current control parameter in regular turn to this current control device;
One tracer signal unit electrically connects this measurement mechanism, in order to record this motor feedback current value of this motor apparatus, to obtain a plurality of current response curves; And
Whether one comparison operation unit electrically connects this tracer signal unit, similar to this predetermined current response curve in order to analyze a plurality of current response curves in regular turn, finds out this similar current response curve similar in appearance to this predetermined current response curve by this.
Above-mentioned frequency changing driving system, wherein this comparison operation unit confirms further whether the stored current control parameter in this storage controlling value unit all tested, and the current control parameter of choosing the current response correspondence of a margin of error minimum wherein is to be considered as this optimum current control parameter.
Above-mentioned frequency changing driving system, wherein this storage controlling value unit further stores the current control parameter of the current response correspondence of this margin of error minimum.
Above-mentioned frequency changing driving system, wherein this frequency changing driving system more comprises a voltage driver, in order to produce a three-phase voltage order according to this voltage commands to drive this motor apparatus.
Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to restriction of the present utility model.
Description of drawings
The configuration diagram of Fig. 1 frequency changing driving system of the present utility model;
Fig. 2 first current response curve of the present utility model and predetermined current response curve schematic diagram relatively;
Fig. 3 second current response curve of the present utility model and predetermined current response curve schematic diagram relatively.
Wherein, Reference numeral
Frequency changing driving system 1
Motor apparatus 2
Voltage driver 2a
Frequency conversion device for adjusting and measuring 10
Automatic regulating apparatus 20
Store controlling value unit 21
Default control table 21a
Order output unit 22
Tracer signal unit 23
Comparison operation unit 24
Current control device 30
Measurement mechanism 40
Predetermined current response curve C
The first current response curve C 1
The second current response curve C 2
Embodiment
For above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, cited below particularlyly go out specific embodiment of the utility model, and cooperate appended accompanying drawing, be described in detail below.
Below please refer to the configuration diagram of Fig. 1 frequency changing driving system of the present utility model.
Frequency changing driving system 1 of the present utility model comprises motor apparatus 2 and frequency conversion device for adjusting and measuring 10, and frequency conversion device for adjusting and measuring 10 is to electrically connect with motor apparatus 2, in order to CD-ROM drive motor device 2.And before motor apparatus 2 first runnings, frequency conversion device for adjusting and measuring 10 is fine settings of carrying out frequency conversion device for adjusting and measuring 10 output current control parameters own automatically according to the feedback current of motor apparatus 2, makes motor apparatus 2 can have best operational effectiveness.Frequency conversion device for adjusting and measuring 10 is a hardware structure, but framework in a microcontroller (Microcontroller Unit, MCU) in, but the utility model is not limited to this.Frequency conversion device for adjusting and measuring 10 comprises automatic regulating apparatus 20, current control device 30 and measurement mechanism 40.Automatic regulating apparatus 20 is in order to carry out testing process to motor apparatus 2.The inside of automatic regulating apparatus 20 can have the controlling value of storage unit 21, order output unit 22, tracer signal unit 23 and comparison operation unit 24, must not have above-mentioned running unit but the utility model does not limit the inside of automatic regulating apparatus 20, automatic regulating apparatus 20 also can only utilize single ratio-integral control module can reach the required testing process of automatic regulating apparatus 20.
Store controlling value unit 21 and have the function of storage, in order to store default control table 21a, but the utility model does not limit and stores the inside that controlling value unit 21 need be arranged at automatic regulating apparatus 20, stores controlling value unit 21 and also can be arranged in other the device in the frequency conversion device for adjusting and measuring 10.Default control table 21a can be manufacturer and sets in advance, and is not limited to only have one group of current control parameter, the environment of operation of visual motor apparatus 2 or the driving element of collocation and set.Order output unit 22 electrically connects and stores controlling value unit 21, and in order to produce current control parameter according to default control table 21a, the producible quantity of current control parameter is to decide according to the setting of default control table 21a.
Current control device 30 is electrically connected at order output unit 22, therefore order the current control parameter of output unit 22 outputs can be transferred to current control device 30, allow current control device 30 can produce voltage commands by this to motor apparatus 2, voltage signal as PWM, motor apparatus 2 is rotated according to this voltage commands, but the present invention is not limited with the signal of this type.And can also be connected voltage driver 2a between motor apparatus 2 and the current control device 30, voltage driver 2a is in order to being converted to voltage commands the three-phase voltage that meets motor apparatus 2, produces electric current with the coil of CD-ROM drive motor device 2.
Measurement mechanism 40 is electrically connected at automatic regulating apparatus 20 and motor apparatus 2, and when motor apparatus 2 rotated, measurement mechanism 40 read the motor feedback current value of motor apparatus 2, is transferred to automatic regulating apparatus 20 again.Tracer signal unit 23 electrically connects with measurement mechanism 40.This motor feedback current value is noted in tracer signal unit 23, can count the current response curve of motor apparatus 2.Comparison operation unit 24 electrically connects with tracer signal unit 23.When tracer signal unit 23 records obtain the current response curve, carry out testing process by comparison operation unit 24 again, so that relatively whether the current response curve is similar to the predetermined current response curve.If obtain and the same or analogous similar current response curve of predetermined current response curve, the motor apparatus 2 that then represents this moment can have best usefulness.Therefore comparison operation unit 24 is considered as optimum current control parameter with the corresponding current control parameter of similar current response curve at this moment, stores controlling value unit 21 to return to deposit in.Thus, motor apparatus 2 operates according to this optimum current control parameter.If do not obtain similar current response curve, then order output unit 22 from default control table 21a, to produce next current control parameter again, come the retest flow process, find out similar current response curve and optimum current control parameter by this.
Then please refer to Fig. 2 first current response curve of the present utility model and predetermined current response curve schematic diagram relatively.
For example, when automatic regulating apparatus 20 produces first current control parameter according to default control table 21a, current control device 30 is controlled motor apparatus 2 runnings according to this first current control parameter to obtain first voltage commands.Measurement mechanism 40 obtains motor feedback current value according to the running of motor apparatus 2 again, and is recorded in the tracer signal unit 23, obtains the first current response curve C 1.Relatively whether the first current response curve C 1 is similar to predetermined current response curve C for comparison operation unit 24 at this moment.Just as shown in Figure 2, the first current response curve C 1 is compared with predetermined current response curve C, and the first current response curve C 1 has surging, and the response during stable state is different with predetermined current response curve C, therefore has bigger error amount.If the first current response curve C 1 and predetermined current response curve C and dissimilar then represent motor apparatus 2 and have no idea to reach best efficiency under the situation of first current control parameter, therefore first current control parameter is not optimum current control parameter.
Then please refer to Fig. 3 second current response curve of the present utility model and predetermined current response curve schematic diagram relatively.
When first current control parameter was not optimum current control parameter, then automatic regulating apparatus 20 produced next current control parameter according to default control table 21a again, i.e. second current control parameter.Current control device 30 is controlled motor apparatus 2 runnings according to this second current control parameter to obtain second voltage commands.Measurement mechanism 40 obtains motor feedback current value according to the running of motor apparatus 2 again, and is recorded in the tracer signal unit 23, obtains the second current response curve C 2.Thus, whether comparison operation unit 24 can to compare the second current response curve C 2 again similar to predetermined current response curve C.Just as shown in Figure 3, this moment is if the second current response curve C 2 is similar to predetermined current response curve C, has less error amount, then represent the second current response curve C 2 and be similar current response curve, represent also that motor apparatus 2 can reach or near best efficiency under the situation of the second current response curve C, 2 corresponding second current control parameter, therefore namely setting second current control parameter is optimum current control parameter, and be stored in the storage controlling value unit 21, replace original setting.When motor apparatus 2 will operate afterwards, frequency changing driving system 1 was second current control parameter that directly reads in the frequency conversion device for adjusting and measuring 10, to reach best usefulness.
Automatic regulating apparatus 20 reads in regular turn and stores the default control table 21a that stores in the controlling value unit 21, produces a plurality of current control parameter, tests the usefulness of motor apparatus 2.Thus, whether comparison operation unit 24 is further to confirm to store controlling value unit 21 stored current control parameter all to test, after comparison operation unit 24 will store the default control table 21a that store in the controlling value unit 21 and all test, after just different current response curves and predetermined current response curve C all having been compared, the current response curve of comparison operation unit 24 meeting error identifying amount minimums, be considered as optimum current control parameter with the current control parameter with this response curve correspondence, return again and be stored in storage controlling value unit 21.But if after all having compared, still do not find close response curve, or the following margin of error of comparing is still excessive, then automatic regulating apparatus 20 can produce error message and inform the user.
By automatic regulating apparatus 20 of the present utility model, frequency conversion device for adjusting and measuring 10 can be adjusted the current control parameter of its output voluntarily, makes motor apparatus 2 reach best operational effectiveness.
Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the utility model.
Claims (9)
1. a frequency conversion device for adjusting and measuring is used for driving a motor apparatus, it is characterized in that this frequency conversion device for adjusting and measuring comprises:
One current control device in order to produce a voltage commands to this motor apparatus, rotates to control this motor apparatus;
One measurement mechanism, this motor apparatus reads a motor feedback current value certainly; And
One automatic regulating apparatus electrically connects this current control device and this measurement mechanism, and in order to carry out a testing process, this automatic regulating apparatus comprises:
One stores the controlling value unit, in order to store a default control table;
One the order output unit, electrically connect this storage controlling value unit, in order to export a current control parameter according to this default control table, make this current control device according to this current control parameter to produce this voltage commands to this motor apparatus;
One tracer signal unit electrically connects this measurement mechanism, in order to record this motor feedback current value of this motor apparatus, to obtain a current response curve; And
Whether one comparison operation unit electrically connects this tracer signal unit, similar to a predetermined current response curve in order to analyze this first current response curve; Wherein, this order output unit can produce next current control parameter again according to this default control table, and makes this comparison operation unit repeat this testing process, until obtaining till the similar current response curve of this predetermined current response curve; At this moment, this comparison operation unit is set the corresponding current control parameter of this similar current response curve and is optimum current control parameter, and is stored in this storage controlling value unit, and this motor apparatus is operated according to this optimum current control parameter.
2. frequency conversion device for adjusting and measuring according to claim 1, it is characterized in that, this order output unit to produce a plurality of current control parameter in regular turn, allows this motor apparatus rotate to obtain a plurality of current response curves according to this default control table, comes to compare with this predetermined current response curve.
3. frequency conversion device for adjusting and measuring according to claim 2, it is characterized in that, this comparison operation unit confirms further whether the stored current control parameter in this storage controlling value unit all tested, and the current control parameter of choosing the current response correspondence of a margin of error minimum wherein is to be considered as this optimum current control parameter.
4. frequency conversion device for adjusting and measuring according to claim 3 is characterized in that, this storage controlling value unit further stores the current control parameter of the current response correspondence of this margin of error minimum.
5. a frequency changing driving system is characterized in that, comprising:
One motor apparatus; And
One frequency conversion device for adjusting and measuring is electrically connected at this motor apparatus, is used for driving this motor apparatus, and this frequency conversion device for adjusting and measuring comprises:
One automatic regulating apparatus, in order to according to a default control table to produce a current control parameter;
One current control device electrically connects this automatic regulating apparatus, in order to according to this current control parameter to produce a voltage commands to this motor apparatus, control this motor apparatus and rotate; And
One measurement mechanism electrically connects this automatic regulating apparatus, reads a motor feedback current value in order to this motor apparatus certainly; Wherein this automatic regulating apparatus is further carried out a testing process, records this motor feedback current value, and to obtain a current response curve, relatively whether this current response curve is similar to a predetermined current response curve again; Wherein, this automatic regulating apparatus can produce next current control parameter again according to this default control table, and repeats this testing process, until obtaining till the similar current response curve of this predetermined current response curve; At this moment, this automatic regulating apparatus is set current control parameter that should similar current response curve is optimum current control parameter, and this motor apparatus is operated according to this optimum current control parameter.
6. frequency changing driving system according to claim 5 is characterized in that, this automatic regulating apparatus comprises:
One stores the controlling value unit, in order to store this default control table;
One the order output unit, electrically connect this storage controlling value unit, in order to according to this default control table to export a plurality of current control parameter in regular turn to this current control device;
One tracer signal unit electrically connects this measurement mechanism, in order to record this motor feedback current value of this motor apparatus, to obtain a plurality of current response curves; And
Whether one comparison operation unit electrically connects this tracer signal unit, similar to this predetermined current response curve in order to analyze a plurality of current response curves in regular turn, finds out this similar current response curve similar in appearance to this predetermined current response curve by this.
7. frequency changing driving system according to claim 6, it is characterized in that, this comparison operation unit confirms further whether the stored current control parameter in this storage controlling value unit all tested, and the current control parameter of choosing the current response correspondence of a margin of error minimum wherein is to be considered as this optimum current control parameter.
8. frequency changing driving system according to claim 7 is characterized in that, this storage controlling value unit further stores the current control parameter of the current response correspondence of this margin of error minimum.
9. frequency changing driving system according to claim 5 is characterized in that, this frequency changing driving system more comprises a voltage driver, in order to produce a three-phase voltage order according to this voltage commands to drive this motor apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320066935 CN203071862U (en) | 2013-02-05 | 2013-02-05 | Frequency conversion adjusting and testing device and frequency conversion driving system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320066935 CN203071862U (en) | 2013-02-05 | 2013-02-05 | Frequency conversion adjusting and testing device and frequency conversion driving system thereof |
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| CN203071862U true CN203071862U (en) | 2013-07-17 |
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| CN 201320066935 Expired - Lifetime CN203071862U (en) | 2013-02-05 | 2013-02-05 | Frequency conversion adjusting and testing device and frequency conversion driving system thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976108A (en) * | 2014-04-09 | 2015-10-14 | 东元电机股份有限公司 | Compressor variable frequency control system applied to refrigerator |
-
2013
- 2013-02-05 CN CN 201320066935 patent/CN203071862U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976108A (en) * | 2014-04-09 | 2015-10-14 | 东元电机股份有限公司 | Compressor variable frequency control system applied to refrigerator |
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| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20130717 |