CN113497583A - Method for converting control mode of frequency converter of triple cold rolling continuous annealing unit to electric frequency motor - Google Patents
Method for converting control mode of frequency converter of triple cold rolling continuous annealing unit to electric frequency motor Download PDFInfo
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- 238000000137 annealing Methods 0.000 title claims abstract description 37
- 238000005097 cold rolling Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 27
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- 230000008569 process Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 238000012937 correction Methods 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 20
- 230000009466 transformation Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010583 slow cooling Methods 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/0004—Control strategies in general, e.g. linear type, e.g. P, PI, PID, using robust control
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors
Abstract
The invention relates to a method for converting the control mode of a frequency converter of a three-cold-rolling continuous annealing unit to an electric frequency motor, which comprises the following steps: disassembling a variable frequency fan in a furnace area and a stacking device at a coil conveying trolley; connecting a working terminal with a frequency converter, finding out operation parameters related to a speed loop and a current loop in working software, firstly closing a control power switch, and exciting a motor to enable the motor to be controlled in an open-loop normally-open mode instead of closed-loop control; turning the motor to a rotation base speed, observing that the WOCD (speed sensorless control frequency compensation) is adjusted to be MI-G-E2 (speed compensation gain), and enabling the WOCD to be infinitely close to 0; and adjusting internal parameters of the frequency converter in the working software. At the position of a furnace area variable frequency fan and a coil conveying trolley, SS control matched with a code disc device is changed into SL control not matched with the code disc device, spare part loss and unnecessary shutdown caused by damage of the code disc device can be reduced, normal production of a production line is prevented from being influenced, and production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of continuous annealing unit control, in particular to a method for converting a frequency control mode of a frequency converter of a three-cold-rolling continuous annealing unit to a power frequency motor.
Background
The frequency converters of the steel three-cold-rolling continuous annealing 1630 unit and the 2150 unit use Japanese TMEIC equipment, all furnace area frequency conversion fans and production line inlet and outlet coil conveying trolleys are designed to be coded disc controlled initially, a coded disc device is installed to accurately carry out speed regulation control on a motor, wherein, the code disc device compiles signals or data, converts the signals or data into a signal form which can be used for communication, transmission and storage, can detect the rotation direction, the stepping angle, the rotating speed and other signals of the motor and feed back the signals to the driving system, then the SS control system is used for judging the rotation direction of the motor through the speed feedback value of the code disc device, the SS control system is characterized in that speed feedback detection is accurate and is mainly used for equipment with high requirements on speed feedback precision.
However, the continuous annealing 1630 unit and 2150 unit field furnace area variable frequency fans are good wood motors, the rear side small shaft dynamic balance state of the installation code disc device is poor, and the problem is not solved fundamentally from a good wood motor factory engineer to field treatment in the debugging stage, so that in the subsequent production process, code discs of 84 furnace area variable frequency motors are frequently damaged, and the smooth production of a production line is seriously influenced.
In addition, the inlet and outlet of two production machine lines are produced by an SEW motor plant, the design principle is that a trolley is coaxially controlled to move by a main motor and a slave motor, wherein the main motor is provided with a code disc device for feedback, the design requires that debugging parameters of the two motors are approximately the same, the design has the advantage of accurate speed feedback, and has the defects that the code disc device of the main motor has any problem and the two motors cannot work, and the code disc device is complicated in wiring and is 8 x 1.5 multi-core cables, after the problems occur, cables need to be calibrated when being laid, the processing process is complicated, a large amount of small stopping time is increased, and 8 x 1.5 multi-core cables are added in a tank chain and are easy to cause mutual extrusion of cables in the tank chain, so that the problems occur.
Therefore, it is necessary to develop a method for converting the control mode of the frequency converter of the triple cold rolling continuous annealing unit to the electric frequency motor, so that the use of a code disc device and an SS control system is avoided at a frequency conversion fan and a coil conveying trolley in a furnace area, the unnecessary halt caused by spare part loss and code disc device damage can be reduced, the normal production of a production line is prevented from being influenced, and the production efficiency is improved.
Disclosure of Invention
The present invention is directed to solving one of the technical problems of the prior art or the related art.
Therefore, the invention provides a method for converting the control mode of the frequency converter of the three-cold-rolling continuous annealing unit to the electric frequency motor.
In view of the above, the present invention provides a method for converting a control mode of an electrical frequency motor by a frequency converter of a triple cold rolling continuous annealing unit, where the method includes the following steps:
disassembling a variable frequency fan in a furnace area and a stacking device at a coil conveying trolley;
connecting a working terminal with a frequency converter, finding out operation parameters related to a speed loop and a current loop in working software, firstly closing a control power switch, and exciting a motor to enable the motor to be controlled in an open-loop normally-open mode instead of closed-loop control;
turning the motor to a basic rotation speed, observing the WOCD, adjusting MI-G-E2 to enable the WOCD to be infinitely close to 0;
and adjusting internal parameters of the frequency converter in the working software.
Further, the internal parameters of the frequency converter include:
SL item, select the blank, beat √, at this moment the system setting changes to SL control mode;
in the FLG-SL-DB item, the speed sensorless selection is changed from 0 to 1, and the DB mode exciting current setting is entered;
an SL-I-DB item which is a setting value of the exciting current of the motor without the speed sensor (system parameter self-carrying setting value) of MI-ID-BASE under the SL control mode;
the MI-KCT term is a torque angle correction gain and is changed from 0 to 100;
the MI-R1-SET-FREQ term is 1 time of resistance compensation switching frequency and is changed from 0 to 0.5;
an MSK-BLR3 item is used for electrical heavy fault calibration, and is changed from 3100 to 3200;
the SL-CP-SP-EER item is a starting speed reference in idling without a speed sensor and is changed from 0 to 50;
the SL-DFDTLMT term is a speed sensor-free df/dt limiting standard value, and is changed from 0 to 10;
an SL-FLT-E2Q item is used for filtering the 2-time axis voltage of the non-speed sensor, and is changed from 0 to 50;
an SL-FLT-EDQFKK item is used for filtering velocity estimation voltage FBK of the non-velocity sensor, and is changed from 0 to 1000;
an SL-FLT-IQF term is filtering of the torque current of the non-speed sensor, and is changed from 0 to 100;
an SL-KCW-I term is used for estimating a positive integral gain for the speed of the non-speed sensor, and the integral gain is changed from 0 to 400;
SL-KCW-P term is used for correcting proportional gain for speed estimation of a non-speed sensor, and the proportional gain is changed from 0 to 30000;
the SL-LMT-WOC-L term is the lower limit value of the output frequency of the non-speed sensor and is changed from 0 to 0.3;
the SL-VF-CMP term is used for compensating the gain for the voltage drop of the speed-sensorless unit, and is changed from 0 to 0.6;
the SL-TIME-SP-ERR term is a starting TIME reference in the idling of the non-speed sensor and is changed from 0 to 5;
the TIME-LMT-WOC item is the polar reversal limitation removing TIME of the non-speed sensor, and is changed from 0 to 0.1;
the LMT-SP-L item is changed from 0 to 3 for the lowest running speed;
the MA-ZERO-SP term, at ZERO speed detection level, was changed from 3 to 5.
Further, the observation WOCD is used for adjusting MI-G-E2, so that the WOCD is infinitely close to 0, and the stable operation of the three-cold-rolling continuous annealing unit in the speed increasing and reducing processes is ensured.
Further, the work terminal is a notebook computer.
Further, the working software is Navigator software.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
at the position of a furnace area variable frequency fan and a coil conveying trolley, SS control matched with a code disc device is changed into SL control not matched with the code disc device, spare part loss and unnecessary shutdown caused by damage of the code disc device can be reduced, normal production of a production line is prevented from being influenced, and production efficiency is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 shows a flow chart of a method for converting the control mode of an electric frequency motor by a frequency converter of a three-cold rolling continuous annealing unit according to an embodiment of the invention.
Fig. 2 shows a diagram of WOCD (speed sensorless control frequency compensation) curves.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Fig. 1 shows a flow chart of a method for converting the control mode of an electric frequency motor by a frequency converter of a three-cold rolling continuous annealing unit according to an embodiment of the invention.
As shown in fig. 1, the invention provides a method for converting the control mode of an electric frequency motor by a frequency converter of a three-cold-rolling continuous annealing unit, which comprises the following steps:
step 1, disassembling a variable frequency fan in a furnace area and a stacking device at a coil conveying trolley;
step 2, connecting the working terminal with a frequency converter, finding out the operation parameters related to a speed loop and a current loop in working software, firstly closing a control power switch, exciting the motor, and changing closed-loop control of the motor into open-loop normally-open control;
step 3, the motor is rotated to the rotation base speed, the WOCD (speed sensorless control frequency compensation) is observed and adjusted to be MI-G-E2 (speed compensation gain), and the WOCD is infinitely close to 0;
and 4, adjusting the internal parameters of the frequency converter in the working software.
At furnace district frequency conversion fan and fortune book dolly department, S S closed loop control change with code wheel ware cooperation use for need not with the ordinary open form control of SL open loop that code wheel ware cooperation was used, can reduce the spare part loss of three cold rolling continuous annealing unit and code wheel ware damage on the one hand and bring unnecessary and shut down, practice thrift spare part cost, and then offset manufacturing cost, on the other hand reduces the fault rate of three cold rolling continuous annealing unit operations, avoids influencing the normal production of production line, improves production efficiency.
Further, the internal parameters of the frequency converter include:
SL item, select the blank, beat √, at this moment the system setting changes to SL control mode;
in the FLG-SL-DB item, the speed sensorless selection is changed from 0 to 1, and the DB mode exciting current setting is entered;
an SL-I-DB term which is a setting of an excitation current in the SL control mode, i.e., MI-ID-BASE (system parameter self-contained setting);
the MI-KCT term is a torque angle correction gain and is changed from 0 to 100;
the MI-R1-SET-FREQ term is 1 time of resistance compensation switching frequency and is changed from 0 to 0.5;
an MSK-BLR3 item is used for electrical heavy fault calibration, and is changed from 3100 to 3200;
the SL-CP-SP-EER item is a starting speed reference in idling without a speed sensor and is changed from 0 to 50;
the SL-DFDTLMT term is a speed sensor-free df/dt limiting standard value, and is changed from 0 to 10;
an SL-FLT-E2Q item is used for filtering the 2-time axis voltage of the non-speed sensor, and is changed from 0 to 50;
an SL-FLT-EDQFKK item is used for filtering velocity estimation voltage FBK of the non-velocity sensor, and is changed from 0 to 1000;
an SL-FLT-IQF term is filtering of the torque current of the non-speed sensor, and is changed from 0 to 100;
an SL-KCW-I term is used for estimating a positive integral gain for the speed of the non-speed sensor, and the integral gain is changed from 0 to 400;
SL-KCW-P term is used for correcting proportional gain for speed estimation of a non-speed sensor, and the proportional gain is changed from 0 to 30000;
the SL-LMT-WOC-L term is the lower limit value of the output frequency of the non-speed sensor and is changed from 0 to 0.3;
the SL-VF-CMP term is used for compensating the gain for the voltage drop of the speed-sensorless unit, and is changed from 0 to 0.6;
the SL-TIME-SP-ERR term is a starting TIME reference in the idling of the non-speed sensor and is changed from 0 to 5;
the TIME-LMT-WOC item is the polar reversal limitation removing TIME of the non-speed sensor, and is changed from 0 to 0.1;
the LMT-SP-L item is changed from 0 to 3 for the lowest running speed;
the MA-ZERO-SP term, at ZERO speed detection level, was changed from 3 to 5.
SL, the closed-loop control of the motor is changed into open-loop normally-open control, and subsequent parameter modification can improve the running stability of the triple cold rolling continuous annealing unit and avoid faults.
TABLE 1 parameter Change LUT
Fig. 2 shows a diagram of WOCD (speed sensorless control frequency compensation) curves.
Further, the WOCD is observed to be adjusted to MI-G-E2, the WOCD is infinitely close to 0, and the stable operation of the three-cold-rolling continuous annealing unit in the speed increasing and reducing processes is ensured.
As shown in fig. 2, the adjustment of the WOCD to MI-G-E2 is observed to make the WOCD infinitely close to 0, so as to improve the adjustment precision, and further ensure that the three-cold-rolling continuous annealing unit operates stably in the processes of increasing the speed and decreasing the speed, that is, the closer the WOCD is to the horizontal transverse line, the more accurate the precision is, and the more stable the three-cold-rolling continuous annealing unit operates in the processes of increasing the speed and decreasing the speed.
It should be noted that, in this embodiment, the working terminal is a notebook computer, and the working software is navigator software.
The Navigater software was developed for TMEIC, Japan.
Comparative example 1
The transformation parts and transformation results of the three-cold-rolling continuous annealing 1630 unit in 2018 and 2019 are as follows:
and (3) transforming a continuous annealing line inlet and an outlet coil conveying trolley in a three-cold-rolling continuous annealing 1630 unit: the motors 1 in the shuttle cars 1, 2 and 3 at the inlet, the motors 1 in the coiling trolleys 1 and 2 at the inlet, the motors 1 in the shuttle cars 4 at the outlet and the motors 1 in the uncoiling trolleys 1 and 2 at the outlet are changed from SS control to SL control, and the changing method is as described above;
the transformation of a variable frequency fan motor in a furnace area in a three-cold-rolling continuous annealing 1630 unit comprises the following steps: 1630 preheating section fans No. 1 and No. 2 of furnace zone; 1630 furnace area combustion fan No. 1 to No. 14; 1630 furnace zone thermal crown fans No. 1, No. 2, No. 3; 1630 furnace zone slow cooling fans No. 1 and No. 2; 1630 over-aging fans No. 1, No. 2, No. 3 in the furnace area; 1630 furnace zone 1, zone exhaust blower 1, 2; 1630 furnace zone 2, zone exhaust fans No. 1, No. 2; 1630 furnace zone terminal air coolers No. 1, No. 2, No. 3, No. 4 and No. 5; 1630 number 1 of the smoke exhaust fan in the furnace area; 1630 oven zone drying blower No. 1, No. 2; 1630 the number 1, 2, 3, 4, 5 and 6 of the fast cooling air blower in the furnace area is changed from SS control to SL control, and the changing method is as described above.
Comparative example 2
The transformation part and the transformation result of the three-cold rolling continuous annealing 2150 unit in 2018 and 2019 are as follows:
and (3) transforming a continuous annealing line inlet and an outlet coil conveying trolley in a three-cold rolling continuous annealing 2150 unit: the motors 1 in the shuttle cars 1, 2 and 3 at the inlet, the motors 1 in the coiling trolleys 1 and 2 at the inlet, the motors 1 in the shuttle cars 4 at the outlet and the motors 1 in the uncoiling trolleys 1 and 2 at the outlet are changed from SS control to SL control, and the changing method is as described above;
the transformation of a furnace area variable frequency fan motor in a three-cold rolling continuous annealing 2150 unit: no. 1 and No. 2 fans of preheating sections of the 2150 furnace zone; 2150 furnace region combustion fan No. 1 to No. 14; 2150 furnace zone heat convexity fans No. 1, No. 2, No. 3; 2150 furnace zone slow cooling fans No. 1 and No. 2; 2150 furnace region overaging fans No. 1, No. 2, No. 3; 2150 furnace zone No. 1 zone waste gas fan No. 1, No. 2; 2150 furnace zone 2 zone exhaust gas fan No. 1, No. 2; 2150 furnace zone terminal air coolers No. 1, No. 2, No. 3, No. 4, No. 5; 2150 number 1 of furnace region fog exhaust fan; 2150 oven zone drying fans No. 1 and No. 2; 2150 furnace zone quick cooling air blower No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, change from SS control to SL control, the change method is as above.
Before the frequency conversion fan in the continuous annealing line furnace area and the coil feeding and discharging trolley are not changed, the code discs of the fan are replaced once when the 1630 unit and the 2150 unit are shut down in one day in the initial running stage of the production line, the SS control modes of the 1630 unit and the 2150 unit are completely improved into the SL control mode through the modification of the comparative example 1 and the comparative example 2, the running stability of the three-cold-rolling continuous annealing 1630 unit and the three-cold-rolling continuous annealing 2150 unit is improved, the code disc replacing device is not needed any more, on one hand, most of cost is saved on the code disc device spare parts, on the other hand, the stable running of the production line can be ensured, and therefore energy cost is saved.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (5)
1. A method for converting the control mode of an electric frequency motor by a frequency converter of a three-cold-rolling continuous annealing unit is characterized by comprising the following steps:
disassembling a variable frequency fan in a furnace area and a stacking device at a coil conveying trolley;
connecting a working terminal with a frequency converter, finding out operation parameters related to a speed loop and a current loop in working software, firstly closing a control power switch, and exciting a motor to enable the motor to be controlled in an open-loop normally-open mode instead of closed-loop control;
turning the motor to a rotation base speed, and adjusting the observed WOCD (speed sensorless control frequency compensation) to MI-G-E2 (speed compensation gain) to enable the WOCD to be infinitely close to 0;
and adjusting internal parameters of the frequency converter in the working software.
2. The method for converting the control mode of the electric frequency motor by the frequency converter of the triple cold rolling continuous annealing unit according to claim 1, wherein the internal parameters of the frequency converter comprise:
SL item, select the blank, beat √, at this moment the system setting changes to SL control mode;
in the FLG-SL-DB item, the speed sensorless selection is changed from 0 to 1, and the DB mode exciting current setting is entered;
an SL-I-DB item is used for setting a non-speed sensor motor exciting current setting value (system parameter self-carrying setting value) of the exciting current in the SL control mode, namely MI-ID-BASE;
the MI-KCT term is a torque angle correction gain and is changed from 0 to 100;
the MI-R1-SET-FREQ term is 1 time of resistance compensation switching frequency and is changed from 0 to 0.5;
an MSK-BLR3 item is used for electrical heavy fault calibration, and is changed from 3100 to 3200;
the SL-CP-SP-EER item is a starting speed reference in idling without a speed sensor and is changed from 0 to 50;
the SL-DFDTLMT term is a speed sensor-free df/dt limiting standard value, and is changed from 0 to 10;
an SL-FLT-E2Q item is used for filtering the 2-time axis voltage of the non-speed sensor, and is changed from 0 to 50;
an SL-FLT-EDQFKK item is used for filtering velocity estimation voltage FBK of the non-velocity sensor, and is changed from 0 to 1000;
an SL-FLT-IQF term is filtering of the torque current of the non-speed sensor, and is changed from 0 to 100;
an SL-KCW-I term is used for estimating a positive integral gain for the speed of the non-speed sensor, and the integral gain is changed from 0 to 400;
SL-KCW-P term is used for correcting proportional gain for speed estimation of a non-speed sensor, and the proportional gain is changed from 0 to 30000;
the SL-LMT-WOC-L term is the lower limit value of the output frequency of the non-speed sensor and is changed from 0 to 0.3;
the SL-VF-CMP term is used for compensating the gain for the voltage drop of the speed-sensorless unit, and is changed from 0 to 0.6;
the SL-TIME-SP-ERR term is a starting TIME reference in the idling of the non-speed sensor and is changed from 0 to 5;
the TIME-LMT-WOC item is the polar reversal limitation removing TIME of the non-speed sensor, and is changed from 0 to 0.1;
the LMT-SP-L item is changed from 0 to 3 for the lowest running speed;
the MA-ZERO-SP term, at ZERO speed detection level, was changed from 3 to 5.
3. The method for converting the control mode of the electric frequency motor by the frequency converter of the three cold-rolling continuous annealing unit as claimed in claim 1, wherein the observed WOCD is adjusted to MI-G-E2, so that the WOCD is infinitely close to 0, and the three cold-rolling continuous annealing unit is ensured to run stably in the processes of increasing and decreasing the speed.
4. The method for converting the control mode of the electric frequency motor by the frequency converter of the triple cold rolling continuous annealing unit according to any one of claims 1 to 3, wherein the working terminal is a notebook computer.
5. The method for converting the control mode of the electric frequency motor by the frequency converter of the triple cold rolling continuous annealing unit according to any one of claims 1 to 3, wherein the working software is Navigator software.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB990821A (en) * | 1959-10-20 | 1965-05-05 | Standard Telephones Cables Ltd | Control system for communication network |
| CN1339870A (en) * | 2000-08-18 | 2002-03-13 | Lg产电株式会社 | Vector control equipment without sensor and its method |
| JP2007097263A (en) * | 2005-09-27 | 2007-04-12 | Denso Corp | Method of estimating magnetic pole position of synchronous motor |
| CN102340277A (en) * | 2010-07-15 | 2012-02-01 | 发那科株式会社 | Sensorless induction motor control device having function of correcting slip frequency of motor |
| CN102420561A (en) * | 2011-12-01 | 2012-04-18 | 国电南京自动化股份有限公司 | Speed sensorless vector control method on basis of cascaded high voltage inverter |
| CN102545742A (en) * | 2012-02-27 | 2012-07-04 | 固高科技(深圳)有限公司 | Position sensorless control device and control method for permanent magnet synchronous motor |
| JP2015133793A (en) * | 2014-01-10 | 2015-07-23 | ダイキン工業株式会社 | Control device for motor drive device, and motor drive system |
| CN108270380A (en) * | 2017-12-29 | 2018-07-10 | 南京钢铁股份有限公司 | A kind of method for control speed when frequency converter is without speed encoder |
| TWI698082B (en) * | 2020-04-01 | 2020-07-01 | 保銳科技股份有限公司 | Fan control circuit with temperature compensation and method of fan control the same |
-
2021
- 2021-05-06 CN CN202110497511.9A patent/CN113497583A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB990821A (en) * | 1959-10-20 | 1965-05-05 | Standard Telephones Cables Ltd | Control system for communication network |
| CN1339870A (en) * | 2000-08-18 | 2002-03-13 | Lg产电株式会社 | Vector control equipment without sensor and its method |
| JP2007097263A (en) * | 2005-09-27 | 2007-04-12 | Denso Corp | Method of estimating magnetic pole position of synchronous motor |
| CN102340277A (en) * | 2010-07-15 | 2012-02-01 | 发那科株式会社 | Sensorless induction motor control device having function of correcting slip frequency of motor |
| CN102420561A (en) * | 2011-12-01 | 2012-04-18 | 国电南京自动化股份有限公司 | Speed sensorless vector control method on basis of cascaded high voltage inverter |
| CN102545742A (en) * | 2012-02-27 | 2012-07-04 | 固高科技(深圳)有限公司 | Position sensorless control device and control method for permanent magnet synchronous motor |
| JP2015133793A (en) * | 2014-01-10 | 2015-07-23 | ダイキン工業株式会社 | Control device for motor drive device, and motor drive system |
| CN108270380A (en) * | 2017-12-29 | 2018-07-10 | 南京钢铁股份有限公司 | A kind of method for control speed when frequency converter is without speed encoder |
| TWI698082B (en) * | 2020-04-01 | 2020-07-01 | 保銳科技股份有限公司 | Fan control circuit with temperature compensation and method of fan control the same |
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