CN102882418A - Controllable direct-current switch of rubber tired gantry crane - Google Patents
Controllable direct-current switch of rubber tired gantry crane Download PDFInfo
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- CN102882418A CN102882418A CN2012104030971A CN201210403097A CN102882418A CN 102882418 A CN102882418 A CN 102882418A CN 2012104030971 A CN2012104030971 A CN 2012104030971A CN 201210403097 A CN201210403097 A CN 201210403097A CN 102882418 A CN102882418 A CN 102882418A
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Abstract
The invention provides a controllable direct-current switch of a rubber tired gantry crane. An external terminal selection unit of the switch is connected to a single chip microcomputer of a single chip microcomputer program arithmetic unit, and the single chip microcomputer is connected with a trigger terminal of a power element IGBT (insulated gate bipolar translator). The external terminal selection unit selects command signals of running status of the controllable direct-current switch, the command signals are transmitted to the signal chip microcomputer program arithmetic unit and are processed by the same to generate drive signals, and the drive signals are transmitted to the trigger terminal of the power element IGBT to control on and off the power element IGBT. The controllable direct-current switch has the advantages that regenerated energy can be stored in an energy storage unit by the controllable direct-current switch controllably and can meet requirements on energy resupply for lifting or starting of a motor. Particularly, according to 40-ton load tests, the bus direct-current is 199A and the current of the controllable direct-current switch is 203A, about 50% of regenerated electric power can be recovered by the energy storage unit when weights are unload downwards, and about 50% of regenerated electric power can be supplied for the motor through the controllable direct-current switch when in lifting.
Description
Technical field
The present invention relates to the controlled DC converter of a kind of tire type gantry crane, is a kind of device of the controlled interchange of direct current energy Bidirectional intelligent for different direct voltage grades.
Background technology
When the driving of the front court bridge mode mainly with the transducer drive motor realizes, when machine operation when hoisting state, the generation of decline potential energy is unavoidable, this part energy can not be by effective memory by using.At present ripe processing mode mainly is: 1, DC master row and the electric energy of generation that connects brake unit decline potential energy by brake unit consumption on brake resistance; 2, the frequency converter rectifying part has reversible function, the electric energy inversion telegram in reply net of the generation of decline potential energy, but also produced interference to electrical network thereupon.Braking energy during the motor horizontal movement in like manner.Aforesaid way 1 is regenerative electric energy to be dispersed in the air in the heat energy mode on the resistance again consume.Form reactive loss; Aforesaid way 2 is at present technical elements, inefficiency, and the feedback rate of regenerative electric energy is less than 20%.
Summary of the invention
For solving the problem that exists in the above-mentioned technology, the purpose of this invention is to provide the controlled DC converter of a kind of tire type gantry crane, be beneficial to make controlled being stored in the memory cell of this part energy by controlled DC converter, when motor hoists or start, replenish the energy requirement of this moment.
For achieving the above object, the technical solution used in the present invention provides the controlled DC converter of a kind of tire type gantry crane, this interchanger places among multiple the bridge system, and wherein: this interchanger includes external terminal selected cell, Single Chip Microcomputer (SCM) program arithmetic element, power component IGBT electrical energy transfer unit; The external terminal selected cell is connected to the single-chip microcomputer of Single Chip Microcomputer (SCM) program arithmetic element, and single-chip microcomputer connects and is connected with the trigger terminal of power component IGBT; Given signal via the controlled DC converter running status of outside terminal selected cell, given signal is transferred to the Single Chip Microcomputer (SCM) program arithmetic element, the processing of the sequential operation unit of process single-chip microcomputer, the driving signal that produces is transferred to the trigger terminal of power component IGBT, conducting and the shutoff of power ratio control element IGBT are controlled voltage drop and lifting.
Effect of the present invention is that controlled DC converter makes controlled being stored in the memory cell of this part regenerated energy, replenishes energy requirement at this moment when motor hoists or start.Warp is to 40 tons of load testings, dc bus current 410A during without controlled DC converter, dc bus current 199A when controlled DC converter is arranged, controlled DC converter electric current 203A, energy-storage units can reclaim the regenerative electric energy about 50% when transferring weight, and controlled DC converter can provide the electric energy of motor institute energy requirement about 50% when hoisting.
Description of drawings
Fig. 1 is controlled DC converter structure principle chart of the present invention;
Fig. 2 is that controlled DC converter of the present invention practices figure;
Fig. 3 is that controlled DC converter regenerative electric energy streamer of the present invention is to figure;
Fig. 4 is that controlled DC converter energy-storage units electric energy streamer of the present invention is to figure.
Embodiment
By reference to the accompanying drawings the controlled DC converter structure of tire type gantry crane of the present invention is illustrated.
The design philosophy of the controlled DC converter of tire type gantry crane of the present invention is based on by the outside terminal selection mode, and the inner utilization single-chip microcomputer is controlled corresponding power component IGBT, realizes the energy exchange between the high-low voltage.This interchanger one end A connects dc high voltage; Other end B connects the dc low-voltage end, by the exchange that realizes high pressure, low pressure two ends energy of opening of program control power component IGBT, designs for transducer drive field bridge regenerative electric energy recycling specially.The present invention mainly according to operation, the operating characteristic set condition of field bridge, when producing regenerative electric energy, carries out electricity collection; When the needs energy, provide system by collected electric energy as the part of energy, reach energy-conservation purpose.
The controlled DC converter of tire type gantry crane of the present invention, this interchanger place among multiple the bridge system, and this interchanger includes external terminal selected cell, Single Chip Microcomputer (SCM) program arithmetic element, power component IGBT electrical energy transfer unit; The external terminal selected cell is connected to the single-chip microcomputer of Single Chip Microcomputer (SCM) program arithmetic element, and single-chip microcomputer connects and is connected with the trigger terminal of power component IGBT; Given signal via the controlled DC converter running status of outside terminal selected cell, given signal is transferred to the Single Chip Microcomputer (SCM) program arithmetic element, the processing of the sequential operation unit of process single-chip microcomputer, the driving signal that produces is transferred to the trigger terminal of power component IGBT, conducting and the shutoff of power ratio control element IGBT are controlled voltage drop and lifting.
Described external terminal selected cell includes printed circuit board (PCB), by wire access Single Chip Microcomputer (SCM) program arithmetic element, for generation of the status signal that is fit to single-chip microcomputer journey computing order unit and adapts to; The Single Chip Microcomputer (SCM) program arithmetic element includes the fault detector of interconnective input circuit, central processing unit circuit and touch-screen type state, input circuit receives the signal of external terminal selected cell input, the central processing unit circuit stores operation program and carries out computing according to the status signal of inputting, the output operation result is to the drive circuit of power component IGBT, and the fault detector of touch-screen type state touches to control and carries out the application parameter adjustment; Power component IGBT electrical energy transfer unit includes power component IGBT, resistor, inductor, capacitor and is interconnected to constitute bridge architecture, the busbar voltage of described bridge system and energy-storage units voltage are carried out isolation between high pressure, the low pressure, busbar and conducting and the shutoff of energy-storage units by corresponding power component IGBT are realized energy exchange.
The touch-screen type display that is connected with central processing unit in the described Single Chip Microcomputer (SCM) program arithmetic element can be used in on-site manual and touches the operating parameter adjustable settings, and realization cooperates with various bridge system parameters.
The energy storage unit that the controlled DC converter of tire type gantry crane of the present invention is used is the storage battery group, when weight descends the generation regenerative electric energy, by controlled DC converter the high voltage electric energy control that produces is modulated under the safety and stability voltage of storage battery group, the storage battery group is charged; When lifting heavy, the electric energy of storage battery group storage rises to certain high voltage drive field bridge operation by controlled DC converter with low-voltage.By bidirectional characteristic of the present invention, reach the energy two-way exchange.
The touch-screen type display that is connected with central processing unit in the described Single Chip Microcomputer (SCM) program arithmetic element can be used in on-site manual and touches the operating parameter adjustable settings, to realize and the cooperating of various field bridge system parameters.
As shown in Figure 1, 2, primary structure and the basic principle of the controlled DC converter of tire type gantry crane of the present invention are as follows:
Transfer weight and when braking produces regenerative electric energy for transducer drive field bridge motor, motor hoists and more, larger to the electrical network moment impact situation of power consumption when starting simultaneously, and the controlled DC converter of described tire type gantry crane is in use following to be structure:
High-pressure side A in the controlled DC converter of tire type gantry crane links to each other with the frequency converter busbar, setting voltage adjustable extent DC650-750V; Low-pressure end B links to each other with the storage battery group, setting voltage adjustable extent DC300-380V.Transistor G1, transistor G2 in the power component IGBT electrical energy transfer unit of described controlled DC converter, transistor G3, transistor G4 are insulated gate bipolar transistor, are used for realizing the transmitted in both directions of electric energy.Can connect according to busbar the Capacity Selection coupling of transducer drive motor M, the basic power component IGBT model of selecting is SKM200GA123D-200A/1200V/IU, is used for realizing the transmitted in both directions of electric energy.
By transistorized collector electrode Q1, transistorized collector electrode Q3, transistor G1, transistor G3, resistance R 1, resistance R 3, transistorized emitter E 1, transistorized emitter E 3, inductance L 1 forms reduction voltage circuit, after the busbar voltage of high-pressure side A carried out step-down and process, B powered to energy-storage units by low pressure; By transistorized collector electrode Q2, transistorized collector electrode Q4, transistor G2, transistor G4, resistance R 2, resistance R 4, transistorized emitter E 2, transistorized emitter E 4, inductance L 2 forms booster circuit, after the electric energy of the energy-storage units that will link to each other with low pressure B boosts, the busbar voltage of low pressure B is carried out electric energy replenish.
As shown in Figure 3, link to each other frequency converter busbar setting voltage adjustable extent DC650-750V with motor-driven frequency converter busbar at the high-pressure side A of the controlled DC converter of tire type gantry crane; Low-pressure end B links to each other with energy-storage units, setting voltage adjustable extent DC300-380V.By transistorized collector electrode Q1, transistorized collector electrode Q3, transistor G1, transistor G3, resistance R 1, resistance R 3, transistorized emitter E 1, transistorized emitter E 3, inductance L 1 forms reduction voltage circuit, after the busbar voltage of high-pressure side A carried out step-down and process, B powered to energy-storage units by low-pressure end.
As shown in Figure 4, by transistorized collector electrode Q2, transistorized collector electrode Q4, transistor G2, transistor G4, resistance R 2, resistance R 4, transistorized emitter E 2, transistorized emitter E 4, inductance L 2 forms booster circuits, and after the electric energy of the energy-storage units that will link to each other with low-pressure end B boosted, it is additional that the busbar voltage of high-pressure side A is carried out electric energy.The elements such as each power component IGBT are controlled in the realization of controlled DC converter function in conjunction with each input signal by program by its master board, thereby change current direction, realize the forward step-down of direct current and oppositely boost mobilely, realized that energy reclaims the control function of discharging with energy-storage units.
Operation principle:
The high-pressure side A of controlled DC converter links to each other with the busbar of motor-driven frequency converter, and a bridge frequency converter exchanges input three-phase 460VAC, busbar rated operational voltage DC650V usually.
Energy-storage units can be different form, low-pressure end B voltage range DC300-380V according to controlled DC converter arranges energy-storage units, work to controlled DC converter arranges according to the performance characteristics of energy-storage units self energy storage device that adopts again, both guarantee the safety and effectivity of energy-storage units, played again reclaiming electric energy as much as possible.
The work rated voltage DC650-750V of the high-pressure side A of controlled DC converter, can follow the tracks of the busbar voltage of motor-driven frequency converter as required, when voltage is higher than set point, controlled DC converter action, with this part electric energy by inner step-down, the processing such as current limliting, adjusting is the electric energy that can be received safely by energy-storage units, because energy-storage units reclaims this part electric energy, busbar voltage can be reduced to rapidly normal value thereupon.Otherwise, when machine operation makes the busbar lower voltage, when being lower than set point, controlled DC converter by the routine processes of inside, makes it be in the reverse operation state by real-time tracking meeting immediate response, to be stored in the electric energy of energy-storage units by the processing of boosting, adjust as meeting the electric energy of busbar grade of rated voltage, to the busbar power supply, additional at this moment motor is to the overfull demand of electrical network.Stablize the electrical network fluctuation of this moment.
Claims (3)
1. controlled DC converter of tire type gantry crane, this interchanger place among multiple the bridge system, and it is characterized in that: this interchanger includes external terminal selected cell, Single Chip Microcomputer (SCM) program arithmetic element, power component IGBT electrical energy transfer unit; The external terminal selected cell is connected to the single-chip microcomputer of Single Chip Microcomputer (SCM) program arithmetic element, and single-chip microcomputer connects and is connected with the trigger terminal of power component IGBT; Given signal via the controlled DC converter running status of outside terminal selected cell, given signal is transferred to the Single Chip Microcomputer (SCM) program arithmetic element, the processing of the sequential operation unit of process single-chip microcomputer, the driving signal that produces is transferred to the trigger terminal of power component IGBT, conducting and the shutoff of power ratio control element IGBT are controlled voltage drop and lifting.
2. the controlled DC converter of tire type gantry crane according to claim 1, it is characterized in that: described external terminal selected cell includes printed circuit board (PCB), by wire access Single Chip Microcomputer (SCM) program arithmetic element, for generation of the status signal that is fit to single-chip microcomputer journey computing order unit and adapts to; The Single Chip Microcomputer (SCM) program arithmetic element includes the fault detector of interconnective input circuit, central processing unit circuit and touch-screen type state, input circuit receives the signal of external terminal selected cell input, the central processing unit circuit stores operation program and carries out computing according to the status signal of inputting, the output operation result is to the drive circuit of power component IGBT, and the fault detector of touch-screen type state touches to control and carries out the application parameter adjustment; Power component IGBT electrical energy transfer unit includes power component IGBT, resistor, inductor, capacitor and is interconnected to constitute bridge architecture, the busbar voltage of described bridge system and energy-storage units voltage are carried out isolation between high pressure, the low pressure, busbar and conducting and the shutoff of energy-storage units by corresponding power component IGBT are realized energy exchange.
3. the controlled DC converter of tire type gantry crane according to claim 1, it is characterized in that: the touch-screen type display that is connected with central processing unit in the described Single Chip Microcomputer (SCM) program arithmetic element, can be used in on-site manual and touch the operating parameter adjustable settings, realization cooperates with various bridge system parameters.
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| CN2012104030971A CN102882418A (en) | 2012-10-22 | 2012-10-22 | Controllable direct-current switch of rubber tired gantry crane |
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| CN2012104030971A CN102882418A (en) | 2012-10-22 | 2012-10-22 | Controllable direct-current switch of rubber tired gantry crane |
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Citations (6)
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| CN101012045A (en) * | 2007-02-02 | 2007-08-08 | 武汉理工大学 | Flow type hoisting machinery power device utilizing accumulator |
| WO2008050552A1 (en) * | 2006-10-25 | 2008-05-02 | Kabushiki Kaisha Yaskawa Denki | Crane system and its control method |
| CN101293621A (en) * | 2008-06-17 | 2008-10-29 | 天津港(集团)有限公司 | Tire arm derrick crane with auxiliary power source for recovering potential energy |
| CN101420183A (en) * | 2007-10-23 | 2009-04-29 | 上海久隆电力科技有限公司 | Inverter control unit used for synthetic compensation device controller |
| CN201639365U (en) * | 2010-03-26 | 2010-11-17 | 南京理工大学 | Measuring and controlling device utilizing super capacitor bank to store and utilize elevator braking energy |
| CN202889246U (en) * | 2012-10-22 | 2013-04-17 | 天津东方海陆集装箱码头有限公司 | Controllable direct-current converter of tire type gantry crane |
-
2012
- 2012-10-22 CN CN2012104030971A patent/CN102882418A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008050552A1 (en) * | 2006-10-25 | 2008-05-02 | Kabushiki Kaisha Yaskawa Denki | Crane system and its control method |
| CN101012045A (en) * | 2007-02-02 | 2007-08-08 | 武汉理工大学 | Flow type hoisting machinery power device utilizing accumulator |
| CN101420183A (en) * | 2007-10-23 | 2009-04-29 | 上海久隆电力科技有限公司 | Inverter control unit used for synthetic compensation device controller |
| CN101293621A (en) * | 2008-06-17 | 2008-10-29 | 天津港(集团)有限公司 | Tire arm derrick crane with auxiliary power source for recovering potential energy |
| CN201639365U (en) * | 2010-03-26 | 2010-11-17 | 南京理工大学 | Measuring and controlling device utilizing super capacitor bank to store and utilize elevator braking energy |
| CN202889246U (en) * | 2012-10-22 | 2013-04-17 | 天津东方海陆集装箱码头有限公司 | Controllable direct-current converter of tire type gantry crane |
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Application publication date: 20130116 |