CN109458169B - Separated high-power braking system control device - Google Patents
Separated high-power braking system control device Download PDFInfo
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- CN109458169B CN109458169B CN201811368542.9A CN201811368542A CN109458169B CN 109458169 B CN109458169 B CN 109458169B CN 201811368542 A CN201811368542 A CN 201811368542A CN 109458169 B CN109458169 B CN 109458169B
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- 230000003321 amplification Effects 0.000 claims abstract description 47
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 47
- 230000000903 blocking effect Effects 0.000 claims abstract description 20
- 239000013307 optical fiber Substances 0.000 claims description 34
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000004065 semiconductor Substances 0.000 description 4
- 230000010354 integration Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Control Of Voltage And Current In General (AREA)
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Abstract
The invention belongs to the technical field of automatic control technology and power electronics, and discloses a control device of a separated high-power braking system, which aims to solve the problems in a braking unit in the prior art. The control unit comprises a voltage acquisition module, a proportional amplification module, a signal comprehensive processing module, a comparison module, a signal amplification module, an integral feedback module, an overload protection module, an integral module, a power amplification module, an external signal blocking module and a power protection module. The interface unit comprises a reset key, a regulator, a first gating device, a second gating device and a load ratio regulator, the control and the power are separated, the unstable factors caused by interference are effectively solved, the reliability of the system is improved again, the modules are increased or reduced according to the actual power demand, the control unit is independent from the power module, the control unit is not interfered by power, and the system has high efficiency, stable operation and high reliability.
Description
Technical Field
The invention relates to the technical field of automatic control technology and power electronics, in particular to a control device of a separated high-power braking system.
Background
In most large variable-frequency speed regulating systems, when the inertia of a dragging system is large and a motor becomes a generator, the system is in a regenerative braking state, and the kinetic energy of the dragging system is fed back to a direct-current bus of a frequency converter, so that the voltage of the direct-current bus is continuously increased, and even dangerous steps (damage of the frequency converter and the like) are achieved. The high-power braking unit takes on the important task of discharging the surplus energy fed back by the dragging system in a manner of energy consumption and heat dissipation, and the safety of the whole variable-frequency speed regulating system and the quality of the whole engineering are protected at all times. For example, in oil-well rig systems, where the drill bit is operated deep into a subterranean formation of several kilometers, the drill bit is continually provided with a highly efficient and reliable power source by the rig electrical control system due to the unusually complex and uncontrollable geological conditions.
At present, main products of the domestic braking unit are in a small power section (< 300 kW), the large power section braking unit mainly takes international large companies such as Siemens, ABB, vacon and the like as main products, the products are integrated with power, the price is high, the supply period is long, the maintenance is inconvenient, after-sale service is difficult to ensure, and great inconvenience is brought to domestic users. The prior art cannot solve the above technical problems.
Disclosure of Invention
The invention aims to solve the problems in a brake unit in the prior art and provides a control device of a separated high-power brake system, which is stable and reliable and has higher output power.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the control unit comprises a voltage acquisition module, a proportional amplification module, a signal comprehensive processing module, a comparison module, a signal amplification module, an integral feedback module, an overload protection module, an integral module, a power amplification module, an external signal blocking module and a power protection module;
the input end of the voltage acquisition module is connected with the voltage input interface, the output end of the voltage acquisition module is connected with the input end of the proportional amplification module and the input end of the integral module, the output end of the proportional amplification module and the output end of the integral module are both connected with the input end of the signal comprehensive processing module, the output end of the signal comprehensive processing module is connected with the input end of the comparison module, the output end of the comparison module is connected with the input end of the signal amplification module, the output end of the signal amplification module is connected with the input end of the power amplification module, the output end of the power amplification module is connected with a multi-path optical fiber output interface, and the multi-path optical fiber output interface is connected with a power module group;
the input end of the external signal blocking module is connected with an external blocking signal input end, and the output end of the external signal blocking module is connected with the input end of the comprehensive processing module;
the input end of the power protection module is connected with a multi-path optical fiber input power protection signal interface, the multi-path optical fiber input power protection signal interface is connected with the power module group, and the output end of the power protection module is connected with the input end of the signal comprehensive processing module;
the output end of the signal amplification module is also connected with the input end of the overload protection module and the input end of the integral feedback module, the output end of the integral feedback module is connected with the input end of the comparison module, and the output end of the overload protection module is connected with the input end of the signal comprehensive processing module;
the interface unit comprises a reset key, a regulator, a first gate, a second gate and a load ratio regulator, wherein the regulator and the second gate are both connected with the voltage acquisition module, the reset key is connected with the signal comprehensive processing module, the load ratio regulator is connected with the input end of the overload protection module, and the input end of the overload protection module is also connected with the first gate.
Further, the multipath optical fiber output interfaces are 4 paths of optical fiber output interfaces, and each path of optical fiber output interface is connected with a power module.
Further, the multi-path optical fiber input power protection signal interface is a 4-path optical fiber input power protection signal interface, and each path of optical fiber input power protection signal interface is connected with a power module.
Further, the load ratio adjuster is an adjustable resistor.
Compared with the prior art, the invention has the following beneficial effects:
the invention has a wide voltage working range and a wide power range, supports the number of the expansion power modules and the number of the expansion fault types, can output the current state of the system to the upper computer for optimal control, provides an effective and reliable solution for the braking of the large-inertia dragging system, and provides references for system designers. The invention can replace the traditional scheme of connecting a plurality of small power modules in series in a large number, and solves the problems of low system stability, high cost and the like caused by the scheme. Therefore, the invention can effectively reduce the economic and space costs.
The hysteresis control system is formed by the control unit, the frequency modulation limit is broken through, and the frequency modulation and width modulation technical scheme is adopted, so that the control device of the split high-power braking system can quickly respond when the converter generates high-inertia braking, and the braking is quickly released to bring huge feedback energy, thereby ensuring that the converter system works more safely.
The invention adopts the modularized design idea, has high expansibility, high power density and high compatibility interface, ensures that the system design is more flexible, and fills the blank of domestic technology.
The invention separates control and power, effectively solves unstable factors caused by interference, improves the reliability of the system again, increases or reduces modules according to actual power requirements, and synchronously works a plurality of power modules. The control unit is independent of the power modules, the control unit is not interfered by power, and the power modules can work synchronously; the power module can be increased or reduced according to the power requirement, and is convenient to maintain, high in efficiency, stable in operation and high in reliability.
Drawings
FIG. 1 is a schematic diagram of the connection of the present invention.
Fig. 2 is a control block diagram of the present invention.
The reference numerals have the following meanings: 1. a control unit; 2. an interface unit; 3. a multi-path optical fiber output interface; 4. an external lockout signal input; 5. a multi-path optical fiber input power protection signal interface; 6. a power module group; g1: a voltage acquisition module; and G2: a proportional amplifying module; and G3: a signal comprehensive processing module; and G4: a comparison module; and G5: a signal amplifying module; g6: an integral feedback module; and G7: an overload protection module; g8: an integration module; and G9: a power amplification module; g10: an external signal blocking module; g11: a power protection module; s1: a reset key; s2: a regulator; s3: a first gate; s4: a second gate; PD: a load ratio adjuster.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description.
As shown in fig. 1-2, a control device of a split type high-power braking system comprises a control unit 1 and an interface unit 2, wherein the control unit 1 comprises a voltage acquisition module G1, a proportional amplification module G2, a signal comprehensive processing module G3, a comparison module G4, a signal amplification module G5, an integral feedback module G6, an overload protection module G7, an integral module G8, a power amplification module G9, an external signal blocking module G10 and a power protection module G11.
The input end of the voltage acquisition module G1 is connected with a voltage input interface, the output end of the voltage acquisition module G1 is connected with the input end of the proportional amplification module G2 and the input end of the integration module G8, the output end of the proportional amplification module G2 and the output end of the integration module G8 are both connected with the input end of the signal comprehensive processing module G3, the output end of the signal comprehensive processing module G3 is connected with the input end of the comparison module G4, the output end of the comparison module G4 is connected with the input end of the signal amplification module G5, the output end of the signal amplification module G5 is connected with the input end of the power amplification module G9, the output end of the power amplification module G9 is connected with the multipath optical fiber output interface 3, and the multipath optical fiber output interface 3 is connected with the power module group 6. The multi-path optical fiber output interface 3 is a 4-path optical fiber output interface, and each path of optical fiber output interface is connected with a power module (the model of the power module is for example SEMi653GAL176HDs of SEMIKRON corporation).
The input end of the external signal locking module G10 is connected with an external locking signal input end 4, and the output end of the external signal locking module G10 is connected with the input end of the comprehensive processing module G3.
The input end of the power protection module G11 is connected with a plurality of paths of optical fiber input power protection signal interfaces 5, the plurality of paths of optical fiber input power protection signal interfaces 5 are connected with the power module group 6, the plurality of paths of optical fiber input power protection signal interfaces 5 are 4 paths of optical fiber input power protection signal interfaces, and each path of optical fiber input power protection signal interface is connected with a power module. The output end of the power protection module G11 is connected with the input end of the signal comprehensive processing module G3.
The output end of the signal amplification module G5 is also connected with the input end of the overload protection module G7 and the input end of the integral feedback module G6, the output end of the integral feedback module G6 is connected with the input end of the comparison module G4, and the output end of the overload protection module G7 is connected with the input end of the signal comprehensive processing module G3.
The interface unit 2 comprises a reset key S1, a regulator S2, a first gating device S3, a second gating device S4 and a load ratio regulator PD, wherein the regulator S2 and the second gating device S4 are connected with a voltage acquisition module G1, the reset key S1 is connected with a signal comprehensive processing module G3, the load ratio regulator PD is connected with the input end of an overload protection module G7, and the input end of the overload protection module G7 is also connected with the first gating device S3.
The voltage acquisition module G1 is characterized by tracking voltage according to the settings of the regulator S2 and the first gate S4, and has two voltage input interfaces, one is an input interface capable of directly acquiring voltage through a resistor network, and the other is an input interface for a voltage sensor, such as a voltage level LEM LV25-P/SP5.
The proportional amplifying module G2 is characterized in that the proportional operation is performed on the voltage signal output by the voltage acquisition module G1 in real time, and the proportional amplifying module G2 is an operation module based on a general operational amplifier (such as LM324 of Texas instruments) as a functional device.
The signal integrated processing module G3 is characterized in that the output signal from the proportional amplifying module G2, the output signal of the integrating module G8, the output signal of the external signal blocking module G10, the output signal of the overload protection module G7 and the output signal of the power protection module G11 are integrated by using a comparator (for example, LM339 of the legal semiconductor company), an operational amplifier (for example, LM324 of the texas instruments) and a triode as operation modules of functional devices.
The comparison module G4 is characterized in that the output signal from the signal integrated processing module G3 and the output signal of the integral feedback module G6 are processed, and the comparison module G4 is a module using a comparator (for example, LM339 of the legal semiconductor company) as a functional device.
The signal amplifying module G5 is characterized in that the signal from the comparing module G4 is amplified, and the signal amplifying module G5 is a module using an operational amplifier (for example, LM324 of texas instruments) as a functional device.
The power amplification module G9 is characterized in that the power amplification processing is performed on the signal amplification module G5, the output of 4 paths of optical fiber signals is driven, and expansion is supported, and the power amplification module G9 is a module taking a triode (for example, a faerie company) as a functional device.
The integral feedback module G6 is characterized in that the output signal from the signal amplifying module G5 is processed for operation, and the integral feedback module G6 is a module using a capacitor (for example, WIMA company) as a functional device.
The overload protection module G7 processes the output signal from the signal amplification module G5 according to the settings of the gate S3 and the load ratio adjuster PD, and performs arithmetic processing.
The integrating module G8 is characterized by performing integrating operation on the voltage signal output by the voltage acquisition module G1 in real time.
The external signal blocking module G10 is characterized in that an optocoupler (for example CNY-65 of Weishi semiconductor company) and a triode are used as a receiving module of a main functional device, and blocking signals from external input are processed, so that external interference can be effectively reduced, and the probability of false triggering is reduced.
The power protection module G11 is characterized by processing a power protection signal from the outside, having a 4-way fiber receiving port, and supporting expansion, and is an operation module having a comparator (for example, LM339 of the legal semiconductor company) and an operational amplifier (for example, LM324 of the texas instruments company) as main functional devices.
The reset key S1 is characterized in that the manual reset is carried out on the fault which cannot be recovered after the fault occurs and is removed.
The regulator S2 is characterized in that the discharge threshold value can be regulated according to the field working condition requirement.
The second gating device S3 is characterized in that the full load of the power unit can be selected to be put into operation according to the requirements of the working conditions on site.
The first gating device S4 is characterized in that a working voltage level can be selected according to the field working condition requirement.
The load ratio adjuster PD may be an adjustable resistor, and is characterized by adjusting the load ratio according to the field operating condition requirement.
During normal operation, the voltage acquisition module G1 performs real-time tracking on voltage according to the settings of the regulator S2 and the second gate S4, and outputs a voltage signal to the input end of the proportional amplification module G2 and the input end of the integral module G8, the proportional amplification module G2 and the integral module G8 perform operation on the voltage signal, then the operation result is output to the signal integrated processing module G3, the signal integrated processing module G3 performs integrated processing operation on the output signal from the proportional amplification module G2, the output signal of the integral module G8, the output signal of the external signal blocking module G10, the output signal of the overload protection module G7, and the output signal of the power protection module G11, then the operation result is output to the comparison module G4, the comparison module G4 performs operation processing on the output signal from the signal integrated processing module G3 and the output signal of the integral feedback module G6, the signal amplification module G5 performs amplification processing on the signal from the comparison module G4, then the signal is output to the power amplification module G9, and the power amplification module G9 performs pulse transmission on the signal from the optical fiber drive module G4 to the optical fiber interface.
If the external signal blocking module G10 receives a blocking signal from the outside, the external signal blocking module G10 outputs the signal after the signal operation processing to the signal integrated processing module G3, and the signal integrated processing module G3 sends a blocking instruction after receiving the blocking signal.
The overload protection module G7 detects the output signal from the signal amplification module G5, performs operation according to the settings of the first gate S3 and the load ratio adjuster PD, and if the setting is exceeded, sends an overload protection signal to the signal comprehensive processing module G3, and the signal comprehensive processing module G3 sends a protection instruction after receiving the overload protection signal.
The power protection module G11 receives a power protection signal from the outside, outputs the protection signal to the signal integrated processing module G3 after receiving the signal, and sends a protection instruction after the signal integrated processing module G3 receives the power protection signal.
Claims (2)
1. A control device of a separated high-power braking system is characterized in that: the device comprises a control unit (1) and an interface unit (2), wherein the control unit (1) comprises a voltage acquisition module (G1), a proportional amplification module (G2), a signal comprehensive processing module (G3), a comparison module (G4), a signal amplification module (G5), an integral feedback module (G6), an overload protection module (G7), an integral module (G8), a power amplification module (G9), an external signal blocking module (G10) and a power protection module (G11);
the input end of the voltage acquisition module (G1) is connected with a voltage input interface, the output end of the voltage acquisition module (G1) is connected with the input end of the proportional amplification module (G2) and the input end of the integral module (G8), the output end of the proportional amplification module (G2) and the output end of the integral module (G8) are both connected with the input end of the signal comprehensive processing module (G3), the output end of the signal comprehensive processing module (G3) is connected with the input end of the comparison module (G4), the output end of the comparison module (G4) is connected with the input end of the signal amplification module (G5), the output end of the signal amplification module (G5) is connected with the input end of the power amplification module (G9), the output end of the power amplification module (G9) is connected with the multi-path optical fiber output interface (3), the multi-path optical fiber output interface (3) is a 4 path optical fiber output interface, and each path optical fiber output interface is connected with one power module;
the input end of the external signal blocking module (G10) is connected with an external blocking signal input end (4), and the output end of the external signal blocking module (G10) is connected with the input end of the comprehensive processing module (G3);
the input end of the power protection module (G11) is connected with a multi-path optical fiber input power protection signal interface (5), the multi-path optical fiber input power protection signal interface (5) is connected with the power module group (6), and the output end of the power protection module (G11) is connected with the input end of the signal comprehensive processing module (G3);
the output end of the signal amplification module (G5) is also connected with the input end of the overload protection module (G7) and the input end of the integral feedback module (G6), the output end of the integral feedback module (G6) is connected with the input end of the comparison module (G4), and the output end of the overload protection module (G7) is connected with the input end of the signal comprehensive processing module (G3);
the interface unit (2) comprises a reset key (S1), a regulator (S2), a first gating device (S3), a second gating device (S4) and a load ratio regulator (PD), wherein the regulator (S2) and the second gating device (S4) are both connected with a voltage acquisition module (G1), the reset key (S1) is connected with a signal comprehensive processing module (G3), the load ratio regulator (PD) is connected with the input end of an overload protection module (G7), the input end of the overload protection module (G7) is also connected with the first gating device (S3), and the load ratio regulator (PD) is an adjustable resistor.
2. The split high-power brake system control apparatus of claim 1, wherein: the multi-path optical fiber input power protection signal interface (5) is a 4-path optical fiber input power protection signal interface, and each path of optical fiber input power protection signal interface is connected with a power module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811368542.9A CN109458169B (en) | 2018-11-16 | 2018-11-16 | Separated high-power braking system control device |
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| CN201811368542.9A CN109458169B (en) | 2018-11-16 | 2018-11-16 | Separated high-power braking system control device |
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| CN109458169A CN109458169A (en) | 2019-03-12 |
| CN109458169B true CN109458169B (en) | 2023-11-14 |
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| US3427554A (en) * | 1967-07-03 | 1969-02-11 | Honeywell Inc | Control apparatus |
| CN1077774A (en) * | 1992-04-23 | 1993-10-27 | 长沙矿山研究院 | Microcomputer control system of rotary drill |
| CN101741230A (en) * | 2009-12-14 | 2010-06-16 | 天水电气传动研究所有限责任公司 | High-power brake unit |
| CN102354984A (en) * | 2011-10-11 | 2012-02-15 | 辽宁省电力有限公司 | Booster chopping technology-based variable-frequency voltage stabilizing control system and method |
| CN102621501A (en) * | 2012-03-20 | 2012-08-01 | 天津电气传动设计研究所 | System and method for testing temperature rise and efficiency under rated power of high-power photovoltaic inverter |
| CN104467568A (en) * | 2014-12-15 | 2015-03-25 | 中国矿业大学 | Switch reluctance motor braking torque closed-loop control system and method |
| CN106990729A (en) * | 2017-03-29 | 2017-07-28 | 中国科学院长春光学精密机械与物理研究所 | A kind of small-sized numerical model analysis Piezoelectric Ceramic system |
-
2018
- 2018-11-16 CN CN201811368542.9A patent/CN109458169B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3427554A (en) * | 1967-07-03 | 1969-02-11 | Honeywell Inc | Control apparatus |
| CN1077774A (en) * | 1992-04-23 | 1993-10-27 | 长沙矿山研究院 | Microcomputer control system of rotary drill |
| CN101741230A (en) * | 2009-12-14 | 2010-06-16 | 天水电气传动研究所有限责任公司 | High-power brake unit |
| CN102354984A (en) * | 2011-10-11 | 2012-02-15 | 辽宁省电力有限公司 | Booster chopping technology-based variable-frequency voltage stabilizing control system and method |
| CN102621501A (en) * | 2012-03-20 | 2012-08-01 | 天津电气传动设计研究所 | System and method for testing temperature rise and efficiency under rated power of high-power photovoltaic inverter |
| CN104467568A (en) * | 2014-12-15 | 2015-03-25 | 中国矿业大学 | Switch reluctance motor braking torque closed-loop control system and method |
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