CN104184390A - Standby method and standby system for inverters of crane - Google Patents
Standby method and standby system for inverters of crane Download PDFInfo
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- CN104184390A CN104184390A CN201410395078.8A CN201410395078A CN104184390A CN 104184390 A CN104184390 A CN 104184390A CN 201410395078 A CN201410395078 A CN 201410395078A CN 104184390 A CN104184390 A CN 104184390A
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- inverter
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- control unit
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Abstract
The invention discloses a standby method and a standby system for inverters of a crane. The standby method mainly comprises the steps of setting a control unit shared by a plurality of inverters, wherein the control unit carries out on-off and speed regulation control on each inverter according to control requirements; and carrying out control processing on motor parameter group and control parameter group switching, standby power part switching, motor parameter group switching and control parameter group switching through the control unit. The standby method and the standby system for the inverters of the crane can overcome defects of large occupied volume, great investment, high potential safety hazards and the like in the prior art so as to realize the advantages of small occupied volume, small investment and low potential safety hazards.
Description
Technical field
The present invention relates to the electric automatization control section in modernization lifting field, particularly, relate to inverter alternative mean and back-up system for a kind of crane.
Background technology
In current large-tonnage overhead traveling crane equipment, the speed that adopts frequency converter to carry out motor is controlled more.For guaranteeing steady production, reduce the Breakdown Maintenance time, the inverter that hoists used all adopts the mode of the using and the reserved, and both every inverter had a standby inverter.Can when inverter breaks down, be switched to fast reserve arrangement like this, reduce maintenance time, the major accident of avoiding equipment fault to cause.
Although hoist, variable frequency inverter adopts the using and the reserved to solve potential safety hazard, because standby inverter is many, invests larger.And because inverter takies equipment volume, dwindled the free space of crane power house.
In realizing process of the present invention, inventor finds in prior art at least to exist and takies that volume is large, investment is large and the defect such as potential safety hazard is large.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose a kind of crane inverter alternative mean, with realize take volume little, invest advantage little and that potential safety hazard is little.
The second object of the present invention is, proposes a kind of crane inverter back-up system.
For achieving the above object, the technical solution used in the present invention is: inverter alternative mean and back-up system for a kind of crane, mainly comprise:
A, many control units that inverter is shared are set, the control that control unit comprises start and stop, speed governing to every inverter respectively according to the needs of controlling;
B, by control unit, carry out parameter of electric machine group and control parameter group switchings, stand-by power part switching, parameter of electric machine group switching and control the control processing of parameter group switching.
Further, in step b, the operation that described parameter of electric machine group and control parameter group are switched, specifically comprises:
Control unit, can switch the parameter of electric machine group that comprises different powers of motor, rotating speed according to external signal; The parameter group of the start and stop that also can comprise different motors according to external signal switching, speed control, torque control, logic control.
Further, in step b, the operation of described stand-by power part switching, specifically comprises:
Need to have the active/standby isolation switching device with power section, this isolation switching device adopts the shaped article of prior art, during power section switching, sends signal to control unit.
Further, in step b, the operation of described parameter of electric machine group switching, specifically comprises:
Control unit is received after corresponding power switching signal, and the motor internal basic parameter that comprises power, voltage, electric current, rotating speed, code device signal collection is automatically switched, and makes control unit set up corresponding basic data.
Further, in step b, the operation that described control parameter group is switched, specifically comprises:
Control unit is received after corresponding power switching signal, and the control parameter that comprises logic, pid parameter, on off control of switching motor is carried out to switching, makes external command corresponding with the motor of input.
Further, described control unit, mainly take CPU as core parts.
Simultaneously, another technical scheme that the present invention adopts is: the crane that inverter alternative mean matches inverter back-up system for a kind of and above-described crane, mainly comprise rectifier, the inverter group being connected with described rectifier respectively, the control unit being connected with described inverter group by connection, and the fling-cut switch group, group of motors and the encoder group that are connected with described inverter group successively; Described encoder group is also connected with control unit.
Further, described inverter group, comprises the standby inverter near described control unit, and the first inverter, the second inverter and the 3rd inverter that from described standby inverter, away from the direction of control unit, set gradually; Described standby inverter, the first inverter, the second inverter and the 3rd inverter, be connected with rectifier respectively, and by connection, be connected with control unit respectively;
And/or,
Described fling-cut switch group, comprises the first fling-cut switch, the second fling-cut switch and the 3rd fling-cut switch that set gradually; The first stiff end of described the first fling-cut switch, the second fling-cut switch and the 3rd fling-cut switch is all connected with standby inverter, the second stiff end of the first fling-cut switch, the second fling-cut switch and the 3rd fling-cut switch is connected with the first inverter, the second inverter and the 3rd inverter respectively, and the control end of the first fling-cut switch, the second fling-cut switch and the 3rd fling-cut switch is connected with group of motors;
And/or,
Described group of motors, comprises the first main lifting motor, the second main lifting motor and the auxiliary lifting motor that set gradually; The first link of described the first main lifting motor, the second main lifting motor and auxiliary lifting motor is connected with the first fling-cut switch, the second fling-cut switch and the control end of the 3rd fling-cut switch respectively, and the second link of the first main lifting motor, the second main lifting motor and auxiliary lifting motor is connected with encoder group;
And/or,
Described encoder group, comprises the first encoder, the second encoder and the 3rd encoder that set gradually; The first link of described the first encoder, the second encoder and the 3rd encoder, is connected with the second link of the first main lifting motor, the second main lifting motor and auxiliary lifting motor respectively; The second link of the first encoder, the second encoder and the 3rd encoder, is all connected with control unit.
Further, described control unit, mainly take CPU as core parts; And/or described the first fling-cut switch, the second fling-cut switch and the 3rd fling-cut switch, be triac device.
Inverter alternative mean and back-up system for the crane of various embodiments of the present invention, because this alternative mean mainly comprises: many control units that inverter is shared are set, the control that control unit comprises start and stop, speed governing to every inverter respectively according to the needs of controlling; By control unit, carry out the control of parameter of electric machine group and the switching of control parameter group, stand-by power part switching, parameter of electric machine group switching and control parameter group switching and process; Thereby can overcome, in prior art, take that volume is large, investment is large and the large defect of potential safety hazard, with realize take volume little, invest advantage little and that potential safety hazard is little.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
Fig. 1 is the operation principle schematic diagram of inverter alternative mean and back-up system for crane of the present invention.
By reference to the accompanying drawings, in the embodiment of the present invention, Reference numeral is as follows:
1-rectifier; 2-control unit; The standby inverter of 3-; 4-the first inverter; 5-the second inverter; 6-the 3rd inverter; 7-the first fling-cut switch (can be triac device); 8-the second fling-cut switch (can be triac device); 9-the 3rd fling-cut switch (can be triac device); The main lifting motor of 10-first; The main lifting motor of 11-second; The auxiliary lifting motor of 12-; 13-the first encoder; 14-the second encoder; 15-the 3rd encoder; 16-connection.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
According to the embodiment of the present invention, as shown in Figure 1, provide inverter alternative mean and back-up system for a kind of crane.
Technical scheme of the present invention, has changed the conventional approach of hoister in large tonnage AC drives the using and the reserved; Adopt a multiplex standby method, saved equipment investment cost, saved equipment volume.
Technical scheme of the present invention, comprises the following steps:
(1) share the inverter of control unit: the control unit that works the inverter of reusing is that many inverters share a control unit.Control unit carries out respectively the controls such as start and stop, speed governing according to the needs of controlling to every inverter.Inverter and control unit are the shaped article that belongs to prior art.
(2) control unit can carry out parameter of electric machine group and control parameter group switching: control unit can switch according to external signal the parameter of electric machine groups such as different powers of motor, rotating speed, also can switch according to external signal the parameter group such as start and stop, speed control, torque control, logic control of different motors.
(3) stand-by power part switching: need to have the active/standby switching device with power section, this isolation switching device adopts the shaped article of prior art.During power section switching, send signal to control unit.
(4) parameter of electric machine group switching: control unit is received after corresponding power switching signal, to motor internal basic parameter (as power, voltage, electric current, rotating speed, code device signal collection etc.) automatically switch.Make control unit set up corresponding basic data.Meanwhile,
(5) control parameter group switching: control unit is received after corresponding power switching signal, and the control parameter of switching motor (logic, pid parameter, on off control etc.) is carried out to switching, makes external command corresponding with the motor of input.
For example, referring to Fig. 1, technical scheme of the present invention, specifically can comprise the following steps:
(1) as shown in Figure 1, rectifier 1 and the first inverter 4, the second inverter 5, the 3rd inverter 6 drag the first main lifting motor 11 of main lifting motor 10, second and auxiliary lifting motor 12, form alternating-current actuating system.Inverter 3 is standby inverter.Standby inverter 3, the first inverter 4, the second inverter 5, the 3rd inverter 6 are connected with control unit 2 by connection 16.The first encoder 13, the second encoder 14, the 3rd encoder 15 are connected to control unit 2 by harvester (can be integrated or discrete).
(2) control unit 2 can switch parameter of electric machine group and control parameter group according to external signal.
(3) the switching of stand-by power supply adopts the first triac device 7, the second triac device 8,9 pairs of electrical source of power of the 3rd triac device to carry out the switching of active/standby use, and auxiliary contact is sent status signal to control unit 2 simultaneously.
(4) control unit 2 receives after the status signal of the first fling-cut switch 7, the second fling-cut switch 8, the 3rd fling-cut switch 9 switch motor parameter group and controls parameter group, by standby inverter 3, drives main liter or auxiliary lifting motors.
Technical scheme of the present invention, is an a kind of multiplex standby alternative mean, and both the inverter for many different capacities of bridge-type adopts a standby inverter; Equipment investment can be saved like this, simultaneously owing to having saved inverter, the device space of power house can be saved.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a crane inverter alternative mean, is characterized in that, mainly comprises:
A, many control units that inverter is shared are set, the control that control unit comprises start and stop, speed governing to every inverter respectively according to the needs of controlling;
B, by control unit, carry out parameter of electric machine group and control parameter group switchings, stand-by power part switching, parameter of electric machine group switching and control the control processing of parameter group switching.
2. crane according to claim 1 inverter alternative mean, is characterized in that, in step b, the operation that described parameter of electric machine group and control parameter group are switched, specifically comprises:
Control unit, can switch the parameter of electric machine group that comprises different powers of motor, rotating speed according to external signal; The parameter group of the start and stop that also can comprise different motors according to external signal switching, speed control, torque control, logic control.
3. crane according to claim 2 inverter alternative mean, is characterized in that, in step b, the operation of described stand-by power part switching, specifically comprises:
Need to have the active/standby isolation switching device with power section, this isolation switching device adopts the shaped article of prior art, during power section switching, sends signal to control unit.
4. crane according to claim 3 inverter alternative mean, is characterized in that, in step b, the operation of described parameter of electric machine group switching, specifically comprises:
Control unit is received after corresponding power switching signal, and the motor internal basic parameter that comprises power, voltage, electric current, rotating speed, code device signal collection is automatically switched, and makes control unit set up corresponding basic data.
5. crane according to claim 4 inverter alternative mean, is characterized in that, in step b, the operation that described control parameter group is switched, specifically comprises:
Control unit is received after corresponding power switching signal, and the control parameter that comprises logic, pid parameter, on off control of switching motor is carried out to switching, makes external command corresponding with the motor of input.
6. according to the crane inverter alternative mean described in any one in claim 1-5, it is characterized in that, described control unit, mainly take CPU as core parts.
One kind with the crane that inverter alternative mean matches inverter back-up system for crane claimed in claim 1, it is characterized in that, mainly comprise rectifier, the inverter group being connected with described rectifier respectively, the control unit being connected with described inverter group by connection, and the fling-cut switch group, group of motors and the encoder group that are connected with described inverter group successively; Described encoder group is also connected with control unit.
8. crane according to claim 1 inverter back-up system, it is characterized in that, described inverter group, comprise the standby inverter near described control unit, and the first inverter, the second inverter and the 3rd inverter that from described standby inverter, away from the direction of control unit, set gradually; Described standby inverter, the first inverter, the second inverter and the 3rd inverter, be connected with rectifier respectively, and by connection, be connected with control unit respectively;
And/or,
Described fling-cut switch group, comprises the first fling-cut switch, the second fling-cut switch and the 3rd fling-cut switch that set gradually; The first stiff end of described the first fling-cut switch, the second fling-cut switch and the 3rd fling-cut switch is all connected with standby inverter, the second stiff end of the first fling-cut switch, the second fling-cut switch and the 3rd fling-cut switch is connected with the first inverter, the second inverter and the 3rd inverter respectively, and the control end of the first fling-cut switch, the second fling-cut switch and the 3rd fling-cut switch is connected with group of motors;
And/or,
Described group of motors, comprises the first main lifting motor, the second main lifting motor and the auxiliary lifting motor that set gradually; The first link of described the first main lifting motor, the second main lifting motor and auxiliary lifting motor is connected with the first fling-cut switch, the second fling-cut switch and the control end of the 3rd fling-cut switch respectively, and the second link of the first main lifting motor, the second main lifting motor and auxiliary lifting motor is connected with encoder group;
And/or,
Described encoder group, comprises the first encoder, the second encoder and the 3rd encoder that set gradually; The first link of described the first encoder, the second encoder and the 3rd encoder, is connected with the second link of the first main lifting motor, the second main lifting motor and auxiliary lifting motor respectively; The second link of the first encoder, the second encoder and the 3rd encoder, is all connected with control unit.
9. crane according to claim 8 inverter back-up system, is characterized in that, described control unit mainly be take CPU as core parts; And/or described the first fling-cut switch, the second fling-cut switch and the 3rd fling-cut switch, be triac device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410395078.8A CN104184390A (en) | 2014-08-12 | 2014-08-12 | Standby method and standby system for inverters of crane |
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| CN201410395078.8A CN104184390A (en) | 2014-08-12 | 2014-08-12 | Standby method and standby system for inverters of crane |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767463A (en) * | 2015-03-18 | 2015-07-08 | 中国科学院电工研究所 | Motor driving device with fault tolerance function |
| CN104767462A (en) * | 2015-03-18 | 2015-07-08 | 中国科学院电工研究所 | Motor driving device with fault tolerance function |
| CN109412469A (en) * | 2018-10-15 | 2019-03-01 | 中车大连机车车辆有限公司 | Traction current transformation system main circuit, control method and its system |
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| JP2005132534A (en) * | 2003-10-29 | 2005-05-26 | Ishikawajima Transport Machinery Co Ltd | Crane power supply device |
| CN102167260A (en) * | 2010-11-30 | 2011-08-31 | 大连华锐股份有限公司 | Fault redundancy protection system and method for variable frequency speed regulation of ladle crane |
| CN202808236U (en) * | 2012-08-07 | 2013-03-20 | 攀钢集团攀枝花钢钒有限公司 | Hoisting system of hoisting machine |
| CN203382399U (en) * | 2013-07-16 | 2014-01-08 | 太原重工股份有限公司 | Encoder redundant system for ladle crane |
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2014
- 2014-08-12 CN CN201410395078.8A patent/CN104184390A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005132534A (en) * | 2003-10-29 | 2005-05-26 | Ishikawajima Transport Machinery Co Ltd | Crane power supply device |
| CN102167260A (en) * | 2010-11-30 | 2011-08-31 | 大连华锐股份有限公司 | Fault redundancy protection system and method for variable frequency speed regulation of ladle crane |
| CN202808236U (en) * | 2012-08-07 | 2013-03-20 | 攀钢集团攀枝花钢钒有限公司 | Hoisting system of hoisting machine |
| CN203382399U (en) * | 2013-07-16 | 2014-01-08 | 太原重工股份有限公司 | Encoder redundant system for ladle crane |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767463A (en) * | 2015-03-18 | 2015-07-08 | 中国科学院电工研究所 | Motor driving device with fault tolerance function |
| CN104767462A (en) * | 2015-03-18 | 2015-07-08 | 中国科学院电工研究所 | Motor driving device with fault tolerance function |
| CN104767463B (en) * | 2015-03-18 | 2018-02-16 | 中国科学院电工研究所 | A kind of motor driver with fault tolerance |
| CN109412469A (en) * | 2018-10-15 | 2019-03-01 | 中车大连机车车辆有限公司 | Traction current transformation system main circuit, control method and its system |
| CN109412469B (en) * | 2018-10-15 | 2021-01-26 | 中车大连机车车辆有限公司 | Traction converter system main circuit, control method and system |
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