CN103014229B - master-slave control method for converter tilting frequency conversion system - Google Patents
master-slave control method for converter tilting frequency conversion system Download PDFInfo
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- CN103014229B CN103014229B CN201210570772.XA CN201210570772A CN103014229B CN 103014229 B CN103014229 B CN 103014229B CN 201210570772 A CN201210570772 A CN 201210570772A CN 103014229 B CN103014229 B CN 103014229B
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Abstract
The invention discloses a master-slave control method for a converter tilting frequency conversion system, which is used for controlling a frequency conversion system of a motor in a converter tilting system. According to the method, four AC asynchronous motors in the converter tilting system are respectively connected with a first frequency converter, a second frequency converter, a third frequency converter and a fourth frequency converter; the four frequency converters are Siemens S120-series frequency converters; The four frequency converters perform isochronal synchronous communication through SINAMICS Link network; one of the four frequency converters is used for main control, and at least one of the other frequency converters is used for slave control. The invention adopts Siemens S120-series frequency converters, performs communication through the SINAMICS Link isochronal synchronous network, and limits the communication delay to be within 3 ms. In addition, with the logical operation function of the S120-series frequency converter itself, the data can be collected and processed directly and accurately, which greatly improves the control precision.
Description
Technical field
The principal and subordinate who the present invention relates to frequency converter controls, and refers to particularly a kind of master-slave control method for converter inclining frequency conversion system.
Background technology
Converter tilting system is a topmost link in pneumatic steelmaking, in oxygen top and bottom combined blown converter steelmaking process, steadily fascinating and accurate location of body of heater, directly has influence on converter hot metal charging, blowing, reinforced, tapping, deslagging, repaiies the quality that the series of process processes such as stove complete.Converter tilting system operation has low speed, heavy duty, rotating, frequently opens braking, intense impact, bears the features such as larger dynamic load, condition of work be severe.In addition, because converter tilting mechanism is to adopt integral four point toothing Flexible Transmissions, four drive motor are connected with rigidity of gear reduction unit, therefore, must control well the synchronism that four drive motor are exerted oneself, allow to increase the serviceable life of reductor, ensure steadily fascinating of body of heater, make steelmaking process smooth.
Only there is limited free function block in the frequency converter that existing converter tilting system adopts, is difficult to meet complicated steering logic needs, processes so logic control part is given as much as possible to PLC in converter inclining control.For frequency converter, the logic control ability of PLC a little less than, can not meet the needs of complex communication and control.But along with the raising that process for making is required, converter tilting system needs higher response speed and control accuracy, and PLC carries out communication by DP bus and frequency converter, no matter in the transmission delay of data or on signal antijamming capability, all become its hard defects, can not effectively promote the overall performance of the control system of fascinating.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art and a kind of master-slave control method for converter inclining frequency conversion system is provided, this master-slave control method utilizes the logical operation function of frequency converter self, direct image data and deal with data more accurately, improves control ability greatly.
The technical scheme that realizes the object of the invention employing is: a kind of master-slave control method for converter inclining frequency conversion system, comprising:
Four AC induction motors in converter tilting system are connected respectively to the first frequency converter, the second frequency converter, the 3rd frequency converter and the 4th frequency converter, described four frequency converters are connected by network, carry out isochronous communication, by a frequency converter in described four frequency converters, as main control, other at least one frequency converter is used as from controlling;
Described the first frequency converter comprises the first control module and the first power cell, the second frequency converter comprises the second control module and the second power cell, the 3rd frequency converter comprises the 3rd control module and the 3rd power cell, the 4th frequency converter comprises the 4th control module and the 4th power cell, and the interface board on described the first control module, the second control module, the 3rd control module and the 4th control module is by composing in series described network.
It is self the output of speed regulator or the torque of other main frames output that the present invention selects torque as the frequency converter from controlling by functional block.
Owing to being to carry out isochronous communication by SINAMICS Link network between four frequency converters, need to arrange data communication format.Then, the mode of programming by DCC realizes the logic in main frame and the every data synchronization process of slave, thereby makes real-time, stability and the reliability of the operation of turndown kinematic train can reach optimum.
The present invention adopts Siemens S120 Series Frequency Converter, carries out communication by SINAMICS Link isochronous network, and communication delay is limited in 3ms.In addition, utilize the logical operation function of S120 Series Frequency Converter self, direct image data and deal with data more accurately, has improved control accuracy greatly.
Brief description of the drawings
Fig. 1 is the structured flowchart of the present invention for the driving control system of converter inclining equipment;
Fig. 2 is the control flow chart of the first frequency converter;
Fig. 3 is the control flow chart of the second frequency converter;
Fig. 4 is the control flow chart of the 3rd frequency converter;
Fig. 5 is the control flow chart of the 4th frequency converter;
Fig. 6 is that control word bit0 starts schematic diagram;
Fig. 7 is that control word bit3 starts schematic diagram;
Fig. 8 controls switching schematic diagram for principal and subordinate;
Fig. 9 is torque selection function piece connection diagram;
Figure 10 is band-type brake synchronizing function piece schematic diagram
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
The present invention, for the master-slave control method of converter inclining frequency conversion system, is that the frequency conversion system of motor in converter tilting system is controlled, thereby makes the kinematic train that is connected in motor have stable synchronism.
As shown in Figure 1, the converter inclining frequency-changing control system the present invention relates to comprises the first AC induction motor 500 and connected the first frequency converter 100, the second AC induction motor 600 and connected the second frequency converter 200, the 3rd AC induction motor 700 and connected the 3rd frequency converter 300, the 4th AC induction motor 800 and connected the 4th frequency converter 400, the first frequency converter 100 comprises the first control module 101 and the first power cell 102, the second frequency converter 200 comprises the second control module 201 and the second power cell 202, the 3rd frequency converter 300 comprises the 3rd control module 301 and the 3rd power cell 302, the 4th frequency converter 400 comprises the 4th control module 401 and the 4th power cell 402.CBE20 interface board on the first control module 101 is connected with the CBE20 interface board of the second control module 201 by DRIVE-CLiQ, the CBE20 interface board of the second control module 201 is connected with the CBE20 interface board of the 3rd control module 301 by DRIVE-CLiQ, the CBE20 interface board of the 3rd control module 301 is connected with the CBE20 interface board of the 4th control module 401 by DRIVE-CLiQ, and four control modules compose in series SINAMICS Link isochronous network.SINAMICS Link communication modes be Siemens in SINAMICS transmission product for realizing a kind of communication modes of exchanges data between gearing slave station, DRIVE-CLiQ is a kind of transmission interface, for the connection between S120 frequency converter and internal module, SINAMICS Link and DRIVE-CLiQ are state of the art, repeat no more herein.
The first AC induction motor 500 is provided with the first scrambler 501, the first scramblers 501 and disposes separately the first coder module 502, the first coder module 502 and be connected with the first power cell 102 by DRIVE-CLiQ.The second AC induction motor 600 is provided with the second scrambler 601, the second scramblers 601 and disposes separately the second coder module 602, the second coder module 602 and be connected with the second power cell 202 by DRIVE-CLiQ.The 3rd AC induction motor 700 is provided with the 3rd scrambler 701, the three scramblers 701 and disposes separately the 3rd coder module 702, the three coder module 702 and be connected with the 3rd power cell 302 by DRIVE-CLiQ.The 4th AC induction motor 800 is provided with the 4th scrambler 801, the four scramblers 801 independent configuration the 4th coder module 802, the four coder module 802 and is connected with the 4th power cell 402 by DRIVE-CLiQ.
In the present embodiment, the first frequency converter 100, the second frequency converter 200, the 3rd frequency converter the 300 and the 34 frequency converter 400 are Siemens S120 Series Frequency Converter, and wherein the first control module 101, the second control module 201, the 3rd control module 301 and the 4th control module 401 are CU320-2 DP control module.The first power cell 102, the second power cell 202, the 3rd power cell 302 and the 4th power cell 402 are PM340 power cell.The first coder module 502, the second coder module 602, the 3rd coder module 702, the 4th coder module 802 are smc30 coder module.
The inventive method as main control, requires four frequency converters to switch by device sequence in a frequency converter in described four frequency converters, when the first frequency converter 100 as main control breaks down, switches to the second frequency converter 200 for main control; When the second frequency converter 200 breaks down, switching to the 3rd frequency converter 300 is main control; At least ensure that 2 frequency converters move simultaneously, exceed 2 table apparatus faults, tilting system stops.Therefore, the present invention requires in kinematic train four frequency converters in can switching main frame, reach a master tape three from a, master tape two from or a master tape one from control mode.
Because the communication between four frequency converters is by SINAMICS Link network, so the data communication form of synchronizing network is carried out as the definition of following table 1:
Table 1
1# in table 1 and accompanying drawing represents the first frequency converter 100, and 2# represents the second frequency converter 200, and 3# represents the 3rd frequency converter 300, and 4# represents the 4th frequency converter 400.
Table 1 data communication form scheme in realization, needs respectively the expert parameter list of every frequency converter control unit to be arranged, and is below described in detail.
In order to confirm principal and subordinate's identity of 4 frequency converters, need to define a kind of data layout, can make frequency converter complete by parsing the function that principal and subordinate controls.Be that binary one 110 represents that 1# machine is main, 1101 represent that 2# machine is main, and 1011 represent that 3# machine is main.As shown in Figure 8, r8890.1, r8892.1, r8893.1 is the ready to run state of corresponding 1# machine, 2# machine, 3# machine respectively.The output terminal of piece 13,20,21 is principal and subordinate and selects position, respectively input I1, I2, the I3 of piece 2 in connection layout 9.
For by the SINAMICS Link network activation of control module, definition simultaneously meets the message format of communication need, selecting parameter p 8815 that IF1 interface packets channel pattern is set by IF1/IF2 interface PZD function is profisafe, and IF2 interface packets channel pattern is isochronous; Select parameter p 8835 to be made as 3 in CBE20 firmware, enable the SINAMICS Link network of CBE20 interface.
The SINAMICS Link station address of four control modules is set respectively by SINAMICS Link station address parameter p 8836, wherein,
Selecting parameter p 8815 that IF1 interface packets channel pattern is set by IF1/IF2 interface PZD function is profisafe, and IF2 interface packets channel pattern is isochronous;
By p8839, message passage IF1 is set, the hardware interface that IF2 is corresponding, wherein IF1 interface definition standard message, IF2 interface can only define free message, define p8839[0] be controlunit onboard (Profibus DP, be integrated in the DP interface on control module), p8839[1] be the option plate interface of COMM board(control module);
P8870 is PZD message reception buffer zone numbering, and the p8870[0 of the second frequency converter is set]=1, p8870[3]=2, p8870[4]=3, the p8870[0 of the 3rd frequency converter]=1, p8870[1]=1, p8870[3]=2, p8870[4]=3, p8870[5]=2, p8870[6]=3, the p8870[0 of the 4th frequency converter]=1, p8870[1]=1, p8870[2]=1, p8870[3]=2, p8870[4]=3, p8870[5]=2, p8870[6]=3, p8870[7]=2, p8870[8]=3;
P8871 is PZD message sending buffer numbering, and the p8871[0 of the first frequency converter is set]=1, p8871[1]=2, p8871[2]=3, the p8871[0 of the second frequency converter]=1, p8871[1]=2, p8871[2]=3, the p8871[0 of the 3rd frequency converter]=1, p8871[1]=2, p8871[2]=3;
P8872 is the node address in corresponding data source, PZD message reception buffer zone, and the p8872[0 of the second frequency converter is set]=1, p8872[3]=1, p8872[4]=1, the p8872[0 of the 3rd frequency converter is set]=1, p8872[1]=2, p8872[3]=1, p8872[4]=1, p8872[5]=2, p8872[6]=2, the p8872[0 of the 4th frequency converter is set]=1, p8872[1]=2, p8872[2]=3, p8872[3]=1, p8872[4]=1, p8872[5]=2, p8872[6]=2, p8872[7]=3, p8872[8]=3.
Control flow to every frequency converter is described respectively below.
As shown in Figure 2, the first frequency converter 100 is controlled according to following steps:
If the first frequency converter 100 non-fault, and the second frequency converter 200, the 3rd frequency converter 300 and the 4th frequency converter 400 do not have total failure, described the first frequency converter 100 is operated in speed ring, and the first frequency converter speed pi regulator output torque and status word are put into buffer zone;
The first frequency converter 100 receives PLC control word and completes and start or stop.
As shown in Figure 3, the second frequency converter 200 is controlled according to following steps:
If the second frequency converter 200 non-fault, the first frequency converter 100 non-fault, the second frequency converter 200 is operated in torque ring, torque input using the output torque of the first frequency converter 100 as the second frequency converter 200, using the band-type brake signal of the first frequency converter 100 as the second frequency converter 200 band-type brake outputs, speed pi regulator output torque and the status word of the second frequency converter 200 are put into buffer zone, and the second frequency converter 200 receives PLC control word and completes and start or stop;
If the second frequency converter 200 non-fault, the first frequency converter 100 has fault, and the 3rd frequency converter 300 and the 4th frequency converter 400 do not have total failure, the second frequency converter 200 is operated in speed ring, using the band-type brake signal of the second frequency converter 200 as the second frequency converter 200 band-type brake outputs, the output torque of speed pi regulator and the status word of the second frequency converter 200 are put into buffer zone; The second frequency converter 200 receives PLC control word and completes and start or stop.
As shown in Figure 4, the 3rd frequency converter 300 is controlled according to following steps:
If the 3rd frequency converter 300 non-fault, the first frequency converter 100 non-fault, the 3rd frequency converter 300 is operated in torque ring, torque input using the output torque of the first frequency converter 100 as the 3rd frequency converter 300, using the band-type brake signal of the first frequency converter 100 as the 3rd frequency converter 300 band-type brake outputs, speed pi regulator output torque and the status word of the 3rd frequency converter 300 are put into buffer zone, and the 3rd frequency converter 300 receives PLC control word and completes and start or stop;
If the 3rd frequency converter 300 non-fault, the first frequency converter 100 has fault, as the second frequency converter 200 non-fault, the 3rd frequency converter 300 is operated in torque ring, torque input using the output torque of the second frequency converter 200 as the 3rd frequency converter 300, using the band-type brake signal of the second frequency converter 200 as the 3rd frequency converter 300 band-type brakes outputs, the output torque of speed pi regulator and the status word of the 3rd frequency converter 300 are put into buffer zone, the 3rd frequency converter 300 receives PLC control word and completes and start or stop;
If the 3rd frequency converter 300 non-fault, the first frequency converter has fault, the second frequency converter has fault, and the 4th frequency converter 400 non-fault, the 3rd frequency converter 300 is operated in speed ring, using the band-type brake signal of the 3rd frequency converter 300 as the 3rd frequency converter 300 band-type brakes outputs, the output torque of speed pi regulator and the status word of the 3rd frequency converter 300 are put into buffer zone, the 3rd frequency converter 300 receives PLC control word and completes and start or stop.
As shown in Figure 5, described the 4th frequency converter 400 is controlled according to following steps:
If the 4th frequency converter 400 non-fault, the first frequency converter 100 non-fault, the 4th frequency converter 400 is operated in torque ring, torque input using the output torque of the first frequency converter 100 as the 4th frequency converter 400, using the band-type brake signal of the first frequency converter 100 as the 4th frequency converter 400 band-type brake outputs, the 4th frequency converter 400 status words are put into buffer zone; The 4th frequency converter 400 receives PLC control word and completes and start or stop;
If the 4th frequency converter 400 non-fault, the first frequency converter 100 has fault, as the second frequency converter 200 non-fault, the 4th frequency converter 400 is operated in torque ring, torque input using the output torque of the second frequency converter 200 as the 4th frequency converter 400, using the band-type brake signal of the second frequency converter 200 as the 4th frequency converter 400 band-type brake outputs, the 4th frequency converter 400 status words are put into buffer zone; The 4th frequency converter 400 receives PLC control word and completes and start or stop;
If the 4th frequency converter 400 non-fault, the first frequency converter 100 has fault, the second frequency converter 200 has fault, and the 3rd frequency converter 300 non-fault, the 4th frequency converter 400 is operated in torque ring, torque input using the output torque of the 3rd frequency converter 300 as the 4th frequency converter, using the band-type brake signal of the 3rd frequency converter 300 as the 4th frequency converter 400 band-type brake outputs, puts into buffer zone by the 4th frequency converter 400 shape bodies; The 4th frequency converter 400 receives PLC control word and completes and start or stop.
Due to converter tilting system adopt be alternating current generator, compare direct drive mode, starting-up response speed is partially slow.But for the toggle speed of converter, in technique, The faster the better in requirement, so the control word that main frame sends over from message passage if1 mouth reception PLC, select the 3rd bit3(operation enable of control word) control start and stop, abandon traditional bit0(on/off1) control start stop mode.Frequency converter overcurrent and hypervelocity fault that the method not only can avoid operative employee to use Zhuan Lu Oscillating handle frequent start-stop to cause, can also skip direct current pre-charge process, directly sets up exciting current, and start-up time, saving was about 1s, as shown in Figure 6 and Figure 7.
In order to confirm principal and subordinate's identity of 4 frequency converters, need to define a kind of data layout, can make frequency converter complete by parsing the function that principal and subordinate controls.Be that binary one 110 represents that the first frequency converter 100 is main, 1101 represent that the second frequency converter 200 is main, and 1011 represent that the 3rd frequency converter 300 is main.As shown in Figure 8, r8890.1, r8892.1, the ready to run state of r8893.1 corresponding the first frequency converter 100, the second frequency converters 200 of difference and the 3rd frequency converter 300.The output terminal of piece 19,20,21 is input I1, I2, the I3 of contiguous block 2 respectively.
It is self the output of speed regulator or the torque of other main frames output that slave can be selected torque by UX8 and B_W functional block.The B_W functional block meaning is Converter 16 binaryvariables to status word, position word coverter; The meaning of MUX8 functional block is Multiplexer, multiplexer, and this functional block is the functional blocks providing in S120 frequency converter DCC programing function, can realize data selection logic.As shown in Figure 9, what B_W functional block input pin connected respectively is that principal and subordinate selects first 3 of control word, and pin X3, the X5 of MUX8 functional block, X6 corresponding outside torque respectively, be specially: the X6 of the second frequency converter is connected to the torque output of the first frequency converter; The X6 of the 3rd frequency converter is connected to the torque output of the first frequency converter, X5 is connected to the torque output of the second frequency converter; The X6 of the 4th frequency converter is connected to the torque output of the first frequency converter, X5 is connected to the torque of the second frequency converter, X3 is connected to the torque output of the 3rd frequency converter.The band-type brake of 4 frequency converters is all determined by main frame, adopts equally DCC to realize selection logic, as shown in figure 10.In figure, BSW piece 5,6,7 is distinguished corresponding the first frequency converter 100, the second frequency converters 200 and the 3rd frequency converter 300, realizes the function of switching value alternative simultaneously.What their input I pin connected respectively is that principal and subordinate selects position, and the input I1 pin respectively corresponding frequency converter of contiguous block is opened band-type brake signal.When receiving as main signal, I pin is 0 o'clock, just can allow the band-type brake signal of self arrive last output by functional block sequence delivery, directly connects the 24V band-type brake relay of controlling to this device.So just make the switch band-type brake absolute synchronization of all devices, the phenomenon of nodding while effectively having avoided body of heater start and stop also having been protected gear case and mechanical hatching gate simultaneously.
The present invention has utilized Siemens S120 system frequency converter SINAMICS Link network creation active data storage and communication format, the mode of simultaneously programming by DCC realizes the logic in main frame and the every data synchronization process of slave, thereby makes real-time, stability and the reliability of the operation of turndown kinematic train can reach optimum.
Claims (1)
1. for a master-slave control method for converter inclining frequency conversion system, it is characterized in that:
Four AC induction motors in converter tilting system are connected respectively to the first frequency converter, the second frequency converter, the 3rd frequency converter and the 4th frequency converter, described four frequency converters are connected by network, carry out isochronous communication, by a frequency converter in described four frequency converters, as main control, other at least one frequency converter is used as from controlling;
Described the first frequency converter comprises the first control module and the first power cell, the second frequency converter comprises the second control module and the second power cell, the 3rd frequency converter comprises the 3rd control module and the 3rd power cell, the 4th frequency converter comprises the 4th control module and the 4th power cell, and the interface board on described the first control module, the second control module, the 3rd control module and the 4th control module is by composing in series described network;
Described four frequency converters are Siemens S120 Series Frequency Converter, and described four frequency converters are connected by SINAMICS Link network, carry out isochronous communication; CBE20 interface board on described the first control module, the second control module, the 3rd control module and the 4th control module composes in series SINAMICS Link network by DRIVE-CLIQ, the data communication form of described SINAMICS Link network carries out following setting: select parameter p 8835 to be made as 3 in the firmware of CBE20, enable the SINAMICS Link network of CBE20 interface;
The SINAMICS Link station address of four control modules is set respectively by SINAMICS Link station address parameter p 8836, wherein,
Selecting parameter p 8815 that IF1 interface packets channel pattern is set by IF1/IF2 interface PZD function is profisafe, and IF2 interface packets channel pattern is isochronous;
By p8839, message passage IF1 is set, the hardware interface that IF2 is corresponding, wherein IF1 interface definition standard message, IF2 interface can only define free message, defines p8839[0] and be control unitonboard, p8839[1] be COMM board;
P8870 is PZD message reception buffer zone numbering, and the p8870[0 of the second frequency converter is set]=1, p8870[3]=2, p8870[4]=3, the p8870[0 of the 3rd frequency converter]=1, p8870[1]=1, p8870[3]=2, p8870[4]=3, p8870[5]=2, p8870[6]=3, the p8870[0 of the 4th frequency converter]=1, p8870[1]=1, p8870[2]=1, p8870[3]=2, p8870[4]=3, p8870[5]=2, p8870[6]=3, p8870[7]=2, p8870[8]=3;
P8871 is PZD message sending buffer numbering, and the p8871[0 of the first frequency converter is set]=1, p8871[1]=2, p8871[2]=3, the p8871[0 of the second frequency converter]=1, p8871[1]=2, p8871[2]=3, the p8871[0 of the 3rd frequency converter]=1, p8871[1]=2, p8871[2]=3;
P8872 is the node address in corresponding data source, PZD message reception buffer zone, the p8872[0 of the second frequency converter is set]=1, p8872[3]=1, p8872[4]=1, the p8872[0 of the 3rd frequency converter is set]=1, p8872[1]=2, p8872[3]=1, p8872[4]=1, p8872[5]=2, p8872[6]=2, the p8872[0 of the 4th frequency converter is set]=1, p8872[1]=2, p8872[2]=3, p8872[3]=1, p8872[4]=1, p8872[5]=2, p8872[6]=2, p8872[7]=3, p8872[8]=3;
The control word that described the first control module sends over from message passage IF1 interface reception PLC, select the 3rd bit3 of control word to control start and stop;
It is self the output of speed regulator or the torque of other main frames output that described frequency converter MUX8 and the B_W functional block being used as from controlling selected torque, what be that B_W functional block input pin connects respectively is that principal and subordinate selects first 3 of control word, pin X3, the X5 of MUX8 functional block, X6 corresponding outside torque respectively, be specially:
The X6 of the second frequency converter is connected to the torque output of the first frequency converter;
The X6 of the 3rd frequency converter is connected to the torque output of the first frequency converter, X5 is connected to the torque output of the second frequency converter;
The X6 of the 4th frequency converter is connected to the torque output of the first frequency converter, X5 is connected to the torque of the second frequency converter, X3 is connected to the torque output of the 3rd frequency converter;
Described the first frequency converter is controlled according to following steps:
If the first frequency converter non-fault, and the second frequency converter, the 3rd frequency converter and the 4th frequency converter do not have total failure, and described the first frequency converter is operated in speed ring, and the first frequency converter speed pi regulator output torque and status word are put into buffer zone;
The first frequency converter reception PLC control word completes and starts or stops;
Described the second frequency converter is controlled according to following steps:
If the second frequency converter non-fault, the first frequency converter non-fault, the second frequency converter is operated in torque ring, torque input using the output torque of the first frequency converter as the second frequency converter, the band-type brake signal of the first frequency converter is exported as the second frequency converter band-type brake, the output torque of speed pi regulator and the status word of the second frequency converter are put into buffer zone, and the second frequency converter reception PLC control word completes and starts or stops;
If the second frequency converter non-fault, the first frequency converter has fault, and the 3rd frequency converter and the 4th frequency converter do not have total failure, the second frequency converter is operated in speed ring, the band-type brake signal of the second frequency converter is exported as the second frequency converter band-type brake, the output torque of speed pi regulator and the status word of the second frequency converter are put into buffer zone; The second frequency converter reception PLC control word completes and starts or stops;
Described the 3rd frequency converter is controlled according to following steps:
If the 3rd frequency converter non-fault, the first frequency converter non-fault, the 3rd frequency converter is operated in torque ring, torque input using the output torque of the first frequency converter as the 3rd frequency converter, the band-type brake signal of the first frequency converter is exported as the 3rd frequency converter band-type brake, the output torque of speed pi regulator and the status word of the 3rd frequency converter are put into buffer zone, and the 3rd frequency converter reception PLC control word completes and starts or stops;
If the 3rd frequency converter non-fault, the first frequency converter has fault, as the second frequency converter non-fault, the 3rd frequency converter is operated in torque ring, torque input using the output torque of the second frequency converter as the 3rd frequency converter, the band-type brake signal of the second frequency converter is exported as the 3rd frequency converter band-type brake, the output torque of speed pi regulator and the status word of the 3rd frequency converter are put into buffer zone, the 3rd frequency converter reception PLC control word completes and starts or stops;
If the 3rd frequency converter non-fault, the first frequency converter has fault, the second frequency converter has fault, and the 4th frequency converter non-fault, the 3rd frequency converter is operated in speed ring, the band-type brake signal of the 3rd frequency converter is exported as the 3rd frequency converter band-type brake, the output torque of speed pi regulator and the status word of the 3rd frequency converter are put into buffer zone, the 3rd frequency converter reception PLC control word completes and starts or stops;
Described the 4th frequency converter is controlled according to following steps:
If the 4th frequency converter non-fault, the first frequency converter non-fault, the 4th frequency converter is operated in torque ring, torque input using the output torque of the first frequency converter as the 4th frequency converter, the band-type brake signal of the first frequency converter is exported as the 4th frequency converter band-type brake, the 4th frequency converter status word is put into buffer zone; The 4th frequency converter reception PLC control word completes and starts or stops;
If the 4th frequency converter non-fault, the first frequency converter has fault, as the second frequency converter non-fault, the 4th frequency converter is operated in torque ring, torque input using the output torque of the second frequency converter as the 4th frequency converter, the band-type brake signal of the second frequency converter is exported as the 4th frequency converter band-type brake, the 4th frequency converter status word is put into buffer zone; The 4th frequency converter reception PLC control word completes and starts or stops;
If the 4th frequency converter non-fault, the first frequency converter has fault, the second frequency converter has fault, and the 3rd frequency converter non-fault, the 4th frequency converter is operated in torque ring, torque input using the output torque of the 3rd frequency converter as the 4th frequency converter, exports the band-type brake signal of the 3rd frequency converter as the 4th frequency converter band-type brake, the 4th frequency converter shape body is put into buffer zone; The 4th frequency converter reception PLC control word completes and starts or stops.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210570772.XA CN103014229B (en) | 2012-12-25 | 2012-12-25 | master-slave control method for converter tilting frequency conversion system |
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| CN201210570772.XA CN103014229B (en) | 2012-12-25 | 2012-12-25 | master-slave control method for converter tilting frequency conversion system |
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| CN103014229A CN103014229A (en) | 2013-04-03 |
| CN103014229B true CN103014229B (en) | 2014-10-08 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103257642B (en) * | 2013-04-28 | 2016-07-27 | 深圳市英威腾电气股份有限公司 | Multiple-converter master-slave control system |
| CN103268095B (en) * | 2013-04-28 | 2015-09-16 | 深圳市英威腾电气股份有限公司 | Fault handling method and Multiple-converter master-slave control system |
| CN105039641B (en) * | 2015-07-24 | 2017-11-10 | 山东钢铁股份有限公司 | A kind of Tilting Device of Converter synchronisation control means and system |
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| CN107130081A (en) * | 2016-02-29 | 2017-09-05 | 鞍钢股份有限公司 | A kind of converter tipping motor excitation control system |
| CN106694557A (en) * | 2016-08-17 | 2017-05-24 | 天津电气科学研究院有限公司 | Control system for core rod stop trolleys of seamless steel tube continuous rolling mills and control method thereof |
| CN109039164A (en) * | 2018-06-14 | 2018-12-18 | 武汉船用机械有限责任公司 | A kind of electric gear gear rack elevating system frequency converter master-slave control method |
| CN109777911B (en) * | 2019-03-13 | 2020-10-16 | 飞马智科信息技术股份有限公司 | Control method and control system for tilting of converter |
| CN111850231B (en) * | 2020-06-17 | 2022-03-22 | 重庆川仪自动化股份有限公司 | Method and device for counting number of start-stop times of converter tilting mechanism and accumulated running time of trunnion bearing |
| CN115786631B (en) * | 2021-09-09 | 2024-03-15 | 上海宝信软件股份有限公司 | Control method, system, equipment and medium suitable for converter tilting zero-speed hovering |
| CN113885429A (en) * | 2021-10-22 | 2022-01-04 | 南阳汉冶特钢有限公司 | Method for controlling converter tilting system by using S120 frequency converter |
| CN114164313B (en) * | 2021-12-01 | 2023-05-09 | 首钢集团有限公司 | Converter tilting control method and system |
| CN114959166B (en) * | 2022-05-10 | 2023-08-15 | 首钢京唐钢铁联合有限责任公司 | Control method, device, equipment and medium for steelmaking converter |
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