CN102751938B - A kind of Alternating Current Governor System being applicable to mine fan - Google Patents
A kind of Alternating Current Governor System being applicable to mine fan Download PDFInfo
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- CN102751938B CN102751938B CN201210028901.2A CN201210028901A CN102751938B CN 102751938 B CN102751938 B CN 102751938B CN 201210028901 A CN201210028901 A CN 201210028901A CN 102751938 B CN102751938 B CN 102751938B
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- asynchronous motor
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- wound asynchronous
- power supply
- excitation power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
A kind of Alternating Current Governor System being applicable to mine fan, comprise: ac excitation power supply, wire-wound asynchronous motor, numerical control system and A/D sampling module, wire-wound asynchronous motor comprises threephase stator and three-phase rotor, and the threephase stator of wire-wound asynchronous motor is directly connected with three phase network; Ac excitation power supply input side is connected with three phase network, and outlet side is connected with the three-phase rotor of wound asynchronous motor, in order to realize the rotor-side frequency control of wire-wound asynchronous motor; Numerical control system is connected with ac excitation power supply and A/D sampling module respectively, in order to realize motor speed closed-loop control according to the Data Control wire-wound asynchronous motor of A/D sampling module collection, and sends start pulse signal; A/D sampling module is in order to gather the electric current of wire-wound asynchronous motor, voltage and tach signal.It is little that the present invention has frequency inverter capacity, with low cost, input power factor is high and the advantage that harmonic content is little.
Description
Technical field
The present invention relates to mine hoist fan frequency conversion governing system application, particularly relate to a kind of Alternating Current Governor System being applicable to mine fan.
Background technology
Blower fan is a kind of important slewing in coal production.At present, the mode being applied to mine hoist Fan Regulation air quantity mainly contains controlling opening of valve, high-voltage frequency conversion and speed-adjusting and tandem control etc.Regulate air quantity can make the energy ezpenditure of about 30% on control valve by controlling opening of valve, this is a kind of highly energy-consuming, control method of poor benefits.High-voltage frequency conversion and speed-adjusting is a kind of mode of speed regulation applied in recent years in mine fan, and which belongs to stator side converter technique, and the capacity of frequency converter is comparatively large, and cost is high; Tandem control belongs to rotor-side converter technique, and the capacity of frequency converter is less, cost-saving.But there is the shortcomings such as power factor is low, harmonic content is large in traditional tandem control.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of Alternating Current Governor System being applicable to mine fan, is a kind of mine fan rotor side frequency conversion speed-adjusting system based on matrix converter.
For achieving the above object, the invention provides a kind of Alternating Current Governor System being applicable to mine fan, comprise: ac excitation power supply, wire-wound asynchronous motor, numerical control system and A/D sampling module, wire-wound asynchronous motor comprises threephase stator and three-phase rotor, and the threephase stator of wire-wound asynchronous motor is directly connected with three phase network; Ac excitation power supply input side is connected with three phase network, and outlet side is connected with the three-phase rotor of wound asynchronous motor, in order to realize the rotor-side frequency control of wire-wound asynchronous motor; A/D sampling module is in order to gather the electric current of wire-wound asynchronous motor, voltage and tach signal; Numerical control system is connected with ac excitation power supply and A/D sampling module respectively, in order to carry out vector calculus according to the data of A/D sampling module collection, and send start pulse signal to ac excitation power supply, thus control ac excitation power supply provides the power supply of changeable frequency for wire-wound asynchronous motor rotor-side, realizes wire-wound asynchronous motor frequency control.
According to the Alternating Current Governor System being applicable to mine fan described in present pre-ferred embodiments, above-mentioned ac excitation power supply adopts matrix converter, and it comprises 9 bidirectional switchs, and each bidirectional switch is formed by two IGBT inverse parallels.
Beneficial effect of the present invention is: compared to traditional high-voltage variable-frequency and variable-speed system based on stator side, the present invention adopts the frequency conversion speed-adjusting system based on rotor-side not have intermediate dc energy storage link and input transformer, therefore be easy to the system integration, power density is high, and system cost is low; Further, compared to traditional tandem control, ac excitation power supply of the present invention adopts matrix converter, and its energy can two-way flow, and input power factor is high, and harmonic content is little.Therefore, compared with prior art, it is little that the present invention has frequency inverter capacity, with low cost, input power factor is high and the advantage that harmonic content is little.
Accompanying drawing explanation
Fig. 1 is a kind of topology diagram being applicable to the Alternating Current Governor System of mine fan of the present invention;
Fig. 2 is the structure principle chart of the ac excitation power supply of the embodiment of the present invention;
Fig. 3 is the theory diagram of the numerical control system of the embodiment of the present invention.
Embodiment
A kind of structure and principle being applicable to the Alternating Current Governor System of mine fan that patent of the present invention provides is explained in detail below in conjunction with accompanying drawing.
Refer to Fig. 1, a kind of Alternating Current Governor System being applicable to mine fan, comprise: ac excitation power supply 1, wire-wound asynchronous motor 2, numerical control system 3 and A/D sampling module 4, wire-wound asynchronous motor 2 comprises threephase stator and three-phase rotor, and the threephase stator of wire-wound asynchronous motor 2 is directly connected with three phase network 5; The input side of ac excitation power supply 1 is connected with three phase network 5, and outlet side is connected with the three-phase rotor of wound asynchronous motor 2, in order to realize the rotor-side frequency control of wire-wound asynchronous motor 2; A/D sampling module 4 is in order to gather the electric current of wire-wound asynchronous motor 2, voltage and tach signal, and it comprises input voltage detection circuit, output current detection circuit further.Numerical control system 3 is connected with ac excitation power supply 1 and A/D sampling module 4 respectively, data in order to gather according to A/D sampling module 4 carry out vector calculus, and send start pulse signal to ac excitation power supply 4, thus the rotor-side that control ac excitation power supply 4 is wire-wound asynchronous motor 2 provides the power supply of changeable frequency, realizes wire-wound asynchronous motor 2 frequency control.
Please again see Fig. 2, ac excitation power supply 1 adopts matrix converter, and it comprises 9 bidirectional switchs, and each bidirectional switch is formed by two IGBT inverse parallels.9 bidirectional switch composition 3 × 3 arrays, the side three-phase input end of array is connected with three phase network 5 by Three-phase electric-wave filter, and the three-phase output end of opposite side is connected with the three-phase rotor of wire-wound asynchronous motor 2.
As shown in Figure 3, it is the theory diagram of the numerical control system of the embodiment of the present invention.Numerical control system 3 comprises the control system and pulsed triggering circuit that are made up of DSP, FPGA.In the present embodiment, in order to reduce the computational burden of DSP, in the control circuit designed herein, DSP is only responsible for the realization of motor control algorithms, and the action time of each switch calculated is sent to FPGA through address bus and data/address bus.And FPGA mainly completes A/D sampling, the collection of digital I/O, code device signal, the output of D/A signal and matrix converter four_step commutation strategy and pulse triggering function.Wherein, DSP adopts the high performance TMS320F2812 chip of TI company, and TMS320F2812 is the digital signal processor of TI company for the digital control exploitation of motor, has powerful operational capability, and its highest running speed can reach 150MIPS.The SPARTAN3 Series FPGA chip XC3S50AN that this patent adopts XILINX company to produce, this chip has following characteristics: logical resource enriches, and has 50,000 gate logic unit, 54k ram in slice, maximum 108 I/O ports able to programme; Processing speed is fast, and system clock reaches as high as 300MHz; Have in-chip FLASH, do not need exterior arrangement chip, security performance is good; Support JTAG programming mode, exploitation is convenient.
Below describe operation principle of the present invention in detail: first, control system 3 derives a series of flux linkage equations by the equivalent electric circuit of wire-wound asynchronous motor 2, comprises stator magnetic linkage, air gap flux linkage, rotor flux, wherein air gap flux linkage is the bridge of connecting stator and rotor.Then, by synchronous rotation transformation, be similar to torque current component and the field supply component of DC generator under flux linkage equations can being equivalent to synchronous rotating frame, thus achieve uneoupled control, accelerate the response speed of system.Eventually pass synchronous rotary inverse transformation, produce three-phase alternating current and go to control wire-wound asynchronous motor 2 by ac excitation power supply 1 again, just obtain good speed adjusting performance.During system cloud gray model, by the electric current of A/D sampling module 4 Real-time Collection wire-wound asynchronous motor 2, voltage and tach signal, and be sent to numerical control system 3, numerical control system 3 carries out real-time speed regulating process according to those signals to wire-wound asynchronous motor 2.The principle of vector control that this system adopts is similar with traditional Vector Control System of Induction Motor, but be different from traditional Vector Control System of Induction Motor, traditional Vector Control System of Induction Motor is using rotor flux as directed magnetic linkage, and this system is owing to realizing frequency control by rotor-side, so its directed magnetic linkage is stator magnetic linkage.
Beneficial effect of the present invention is: compared to traditional high-voltage variable-frequency and variable-speed system based on stator side, the present invention adopts the frequency conversion speed-adjusting system based on rotor-side not have intermediate dc energy storage link and input transformer, therefore be easy to the system integration, power density is high, and system cost is low; Further, compared to traditional tandem control, ac excitation power supply of the present invention adopts matrix converter, and its energy can two-way flow, and input power factor is high, and harmonic content is little.Therefore, compared with prior art, it is little that the present invention has frequency inverter capacity, with low cost, input power factor is high and the advantage that harmonic content is little.
The above, it is only better embodiment of the present invention, not any pro forma restriction is done to the present invention, any content not departing from technical solution of the present invention, the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all belong to the scope of technical solution of the present invention.
Claims (2)
1. one kind is applicable to the Alternating Current Governor System of mine fan, it is characterized in that, comprise: ac excitation power supply, wire-wound asynchronous motor, numerical control system and A/D sampling module, described wire-wound asynchronous motor comprises threephase stator and three-phase rotor, and the threephase stator of described wire-wound asynchronous motor is directly connected with three phase network; Described ac excitation power supply input side is connected with three phase network, and outlet side is connected with the three-phase rotor of described wound asynchronous motor, in order to realize the rotor-side frequency control of described wire-wound asynchronous motor; Described A/D sampling module is in order to gather the electric current of described wire-wound asynchronous motor, voltage and tach signal; Described numerical control system is connected with ac excitation power supply and A/D sampling module respectively, in order to carry out vector calculus according to the data of A/D sampling module collection, and send start pulse signal to ac excitation power supply, thus control ac excitation power supply provides the power supply of changeable frequency for wire-wound asynchronous motor rotor-side, realizes wire-wound asynchronous motor frequency control; Described numerical control system comprises the control system and pulsed triggering circuit that are made up of DSP, FPGA, described DSP is responsible for the realization of motor control algorithms, and the action time of each switch calculated is sent to FPGA through address bus and data/address bus, FPGA is for completing A/D sampling, the collection of digital I/O, code device signal, the output of D/A signal and matrix converter four_step commutation strategy and pulse triggering function; DSP adopts the high performance TMS320F2812 chip of TI company, the SPARTAN3 Series FPGA chip XC3S50AN that FPGA adopts XILINX company to produce.
2. be applicable to the Alternating Current Governor System of mine fan as claimed in claim 1, it is characterized in that: described ac excitation power supply adopts matrix converter, and it comprises 9 bidirectional switchs, and each bidirectional switch is formed by two IGBT inverse parallels.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210028901.2A CN102751938B (en) | 2012-02-09 | 2012-02-09 | A kind of Alternating Current Governor System being applicable to mine fan |
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| CN201210028901.2A CN102751938B (en) | 2012-02-09 | 2012-02-09 | A kind of Alternating Current Governor System being applicable to mine fan |
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| CN102751938A CN102751938A (en) | 2012-10-24 |
| CN102751938B true CN102751938B (en) | 2015-10-14 |
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| JP6269355B2 (en) * | 2014-07-04 | 2018-01-31 | 株式会社安川電機 | Matrix converter, power generation system, and power factor control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1179643A (en) * | 1996-09-27 | 1998-04-22 | Abb·专利有限公司 | Three-phase matrix converter ans method for operation |
| EP1311057A1 (en) * | 2001-11-08 | 2003-05-14 | Phase Motion Control S.r.l. | Control method for a three-phase matrix converter |
| CN1676454A (en) * | 2004-04-02 | 2005-10-05 | 株式会社日立制作所 | Elevator device |
| CN101174798A (en) * | 2007-11-16 | 2008-05-07 | 华中科技大学 | Control method for matrix transforming machine and its device |
| CN202663353U (en) * | 2012-02-09 | 2013-01-09 | 上海交通大学 | Alternating-current speed regulation system suitable for mine fan |
-
2012
- 2012-02-09 CN CN201210028901.2A patent/CN102751938B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1179643A (en) * | 1996-09-27 | 1998-04-22 | Abb·专利有限公司 | Three-phase matrix converter ans method for operation |
| EP1311057A1 (en) * | 2001-11-08 | 2003-05-14 | Phase Motion Control S.r.l. | Control method for a three-phase matrix converter |
| CN1676454A (en) * | 2004-04-02 | 2005-10-05 | 株式会社日立制作所 | Elevator device |
| CN101174798A (en) * | 2007-11-16 | 2008-05-07 | 华中科技大学 | Control method for matrix transforming machine and its device |
| CN202663353U (en) * | 2012-02-09 | 2013-01-09 | 上海交通大学 | Alternating-current speed regulation system suitable for mine fan |
Non-Patent Citations (1)
| Title |
|---|
| 双馈电动机矢量控制***性能分析;万能等;《电机与控制学报》;20060331;第10卷(第2期);第138-142页 * |
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