WO2010015112A1 - 用逆变器拖动多台电动机异步同时实现转子变频调速系统 - Google Patents
用逆变器拖动多台电动机异步同时实现转子变频调速系统 Download PDFInfo
- Publication number
- WO2010015112A1 WO2010015112A1 PCT/CN2008/001722 CN2008001722W WO2010015112A1 WO 2010015112 A1 WO2010015112 A1 WO 2010015112A1 CN 2008001722 W CN2008001722 W CN 2008001722W WO 2010015112 A1 WO2010015112 A1 WO 2010015112A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- inverter
- igbt
- motors
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/46—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/24—Variable impedance in stator or rotor circuit
- H02P25/26—Variable impedance in stator or rotor circuit with arrangements for controlling secondary impedance
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more AC dynamo-electric motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
- H02P6/182—Circuit arrangements for detecting position without separate position detecting elements using back-emf in windings
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Definitions
- the invention relates to a motor rotor frequency conversion speed regulation system, in particular to a rotor frequency conversion speed regulation system by asynchronously dragging multiple motors asynchronously.
- the electric motor is the prime mover in the working mechanisms of cranes, fans and pumps, which convert electrical energy into mechanical energy.
- a crane it is possible to drag a crane to perform a variety of different mechanism movements such as lifting (or lowering), luffing, turning and walking to complete the on-site task of the crane.
- Figure 1 shows the schematic diagram of a conventional motor variable frequency speed control system for different cranes. It can be seen from the figure that the system is a constant voltage constant frequency AC power supply provided by the power grid, converted into a direct current by a rectifier bridge, and then driven by an intermediate circuit to convert the direct current through the inverter into an alternating current of different working frequencies. The motor rotates to work. Assumption: The grid power frequency is f. ,
- the motor operates at a frequency of f m .
- ⁇ is the change rate.
- each corresponding actuator requires different electric motors to provide different electrical energy into different mechanical energy. That is to say, different work of the crane requires different motor speeds, that is, the operating frequency f m of the motor is different.
- an inverter can only change one motor operating frequency, and frequency control of one motor, commonly known as "one for one" technology.
- frequency conversion technology is becoming more and more mature, with its wide speed range, high speed precision, fast dynamic response and energy.
- the performance of reversible operation in the four quadrants of the Cartesian coordinate system is the first in the AC drive. Its speed regulation performance is comparable to that of the DC drive, and it has a potential to replace.
- the current frequency conversion technology adopted by foreign crane structures is still a function with one frequency converter, one frequency converter with one inverter, and four functions for normal operation of the crane. Still need to configure four inverters. If you want to increase the energy feedback function of the variable frequency speed control system, you need to add four more inverters. Obviously this is not cost effective.
- One of the objects of the present invention is to provide a rotor frequency conversion speed control system by simultaneously dragging multiple motors with one full bridge inverter. That is, when multiple motors are controlled online, the voltage output by the same inverter is used as an additional back electromotive force of each function motor, and each function chopper is driven to operate in real time to realize simultaneous operation of multiple motors.
- a second object of the present invention is to provide a rotor frequency conversion speed control system by simultaneously dragging multiple motors with one half bridge inverter. That is, when multiple motors are controlled online, the voltage output by the same inverter is used as an additional back electromotive force of each function motor, and each function chopper is driven to operate in real time to realize simultaneous operation of multiple motors.
- the third object of the present invention is to enable the system to have an energy feedback reuse function to effectively save energy.
- the fourth object of the present invention is to realize the frequency conversion speed regulation of the motor rotor of the full bridge active inverter or the half bridge active inverter by one system.
- the technical solution adopted by the present invention is: using an inverter to drag multiple motors asynchronously and simultaneously implementing a rotor frequency conversion speed control system, including:
- a motor unit consisting of 4 motors: M 2 , ⁇ [ 3 and 1 ⁇ 4 , for asynchronous lifting, slewing, turning and walking simultaneously;
- a rectifier group comprising four rectifier bridges: ⁇ , Z 2 , Z 3 and Z 4 for rectifying the different frequency AC signals provided by the motor rotors connected thereto;
- the motive rotor current is continuously adjusted to achieve the purpose of the motor rotor frequency conversion speed regulation; it must be pointed out that: when the chopper conduction rate is 100%, the motor speed is the rated speed;
- a full-bridge inverter or a half-bridge inverter is used to rectify the AC power of different frequencies outputted by the rotors of the respective motors into DC, and then inverters into the same frequency as the industrial AC power supply, and realize the power supply in the same phase. , direct change, and energy feedback to the motor or the grid; a current feedback voltage detector group with four voltage detectors: U tannin, U I2 , U I3 and U I4 , located in the current contained in the rectifier bridge The resistance flowing through the feedback is used to detect the DC current through each corresponding current, and is converted into a voltage form and sent to the input end of the corresponding signal processor;
- a speed feedback voltage detector group consisting of four voltage detectors: U Vl , Uv 2 , Uv 3 and Uv 4 , located between any two lines of the rotor of the motor to detect different frequencies between any two wires of each motor
- the AC voltage is converted to a DC voltage and sent to the input of the corresponding signal processor.
- the invention is based on the use of the inverter control theory technology to perform on-line control of multiple motors. According to the rated power of the motor, the voltage output by the full-bridge inverter or the half-bridge inverter is used as an additional back electromotive force of each functional motor.
- the choppers of each function motor are used in real time to make the motors run asynchronously at the same time, realizing crane lifting, variable amplitude, rotation and walking on-site operations.
- the motor rotor is connected to the active inverter system, and the excess electric energy is always fed back to the motor or the power grid through the inverter, and when the crane descends, the two phases of the motor stator are DC-excited, and thus, The electric motor actually becomes a generator, which is in a state of power generation, and the generated electric energy is fed back to the electric motor or the electric grid through the inverter, thereby realizing energy recovery and effectively saving energy.
- Figure 1 is a schematic diagram of a conventional motor variable frequency speed control system for different cranes.
- Fig. 2 is a schematic view showing the electrical principle of the rotor frequency conversion speed control system by using a full-bridge inverter and a second-bridge inverter to drive multiple motors asynchronously according to the first embodiment of the present invention. Symbol description in the figure
- the first embodiment of the present invention consists of a motor unit 1, a rectifier group 2, a chopper group 3, an isolator group 4, a current limiter group 5, a power capacitor bank 6, an inverter 7,
- the speed feedback voltage detector 8 and the current feedback voltage detector 9 are integrally formed; wherein: the respective rotors of the four motors M 2 , ⁇ 1 3 and 1 ⁇ 4 in the motor group 1 are respectively in turn with the rectifier group 2 4 respective rectifiers Z, Z 2 , Z 3 and Z 4 are connected to respective input ends;
- the respective choppers IGBT IGBT IGBTs of the chopper group 3 and the cathode E of the IGBT 4 are respectively respectively corresponding to the respective three rectifiers Z 2 , Z 3 and Z 4 in the rectifier group 2
- the positive poles of the rectifier diodes intersect at one point, that is, point D;
- the inverter 7 is a full-bridge inverter, comprising six thyristors, namely: KP ⁇ ⁇ 2 , ⁇ 3 , ⁇ 4 , ⁇ 5 and ⁇ 6 , and three output terminals ⁇ ! and ⁇ 4 ,
- the connection points of ⁇ 2 and ⁇ 5 and ⁇ 3 and ⁇ 6 are respectively connected to the ⁇ , B, C terminals of the three-phase industrial AC power supply, and then to the four motors M, M 2 , M 3 in the motor group 1.
- the isolator group 4 includes 8 isolators, namely DD 2 , D 3 , D 4 , D 5 , D 6 ,
- D 7 and D 8 and D ⁇ D 5 , D 2 and D 6 , D 3 and D 7 and D 4 and D 8 , respectively, are connected in series respectively;
- the isolators D 5 and D 6 and the negative pole are simultaneously connected to the input terminals of the current limiting inductors 1 7 in the current limiter group 5; and the negative poles of the isolators D 7 and 0 8 are simultaneously in the current limiter group 5
- the input terminals of the current limiting inductor L 8 are connected.
- the junctions with D 7 and D 4 and D 8 are sequentially connected to the respective ends of the capacitors C 13 , C 14 , C 15 and C 16 in the power capacitor group 6, respectively, to constitute a "T" shape structure.
- the power capacitor bank 6 includes four capacitors, BP: C 13 , C 14 , Ci 5 iP C 16 , and the other ends thereof are simultaneously connected with the chopper IGBT IGBT 2 , IGBT 3 and in the chopper group 3
- the cathodes E of the IGBTs 4 intersect at one point, that is, point D.
- the current limiter group 5 includes two current limiting inductors, SP: L 7 and L 8 , and the output end of the current limiting inductor L 7 is connected to the neutral terminal N of the three-phase industrial AC power supply;
- the output of the current inductor is simultaneously connected to one end of the inductors L 4 , 1 ⁇ and 1 6 in the inverter 7 at one point. It can also be seen from FIG.
- the second embodiment of the present invention consists of a motor group 1, a rectifier group 2, a chopper group 3, an isolator group 4, a current limiter group 5, a power capacitor bank 6, and an inverter 7
- the speed feedback voltage detector group 8 and the current feedback voltage detector group 9 form a whole;
- the respective rotors of the four motors M 2 , M 3 and M 4 in the motor group 1 are in turn respectively with the four rectifiers in the galvanometer group 2 ⁇ 2 , ⁇ 3 and ⁇ 4 respective input terminals are connected;
- the respective cathodes E of the four choppers IGBT IGBT 2 , IGBT 3 and IGBT 4 in the chopper group 3 are respectively corresponding to the respective four rectifiers Zi, Z 2 , and ⁇ 4 in the rectifier group 2, respectively.
- the positive poles of the three rectifier diodes intersect at one point, that is, point D - the inverter 7 is a half-bridge inverter, including three thyristors, BP: ⁇ , , ? 2, and ⁇ 3 , and their respective negative poles are sequentially Passed 3 fuses FU ⁇ 1; 2 and ? 3
- the circuit formed by connecting three inductors L 2 and L 3 in series is followed by three inductors Li, L 2 and !
- the inverter 7 is a half bridge inverter, and three of the controllable silicon KP ⁇ KP 2 and ⁇ 3
- the respective positive electrodes are respectively connected to the eighth, B, and C terminals of the three-phase industrial alternating current power supply, and then to the respective stators of the four electric motors ⁇ 2 , ] ⁇ 3 and ] 4 in the motor unit 1.
- the output of the current limiting inductor 1 ⁇ 7 in the current limiter group 5 is connected to the neutral terminal of the industrial AC power supply to form a three-phase zero-type active inverter bridge structure.
- the above embodiments are merely illustrative of the technical features and implementability of the present invention. It must be stated that: In addition to the above-mentioned cranes performing a variety of different mechanism movements such as lifting, luffing, turning and walking, the present invention is also applicable to any place where it is necessary to drag multiple motors asynchronously and simultaneously in real time. .
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Multiple Motors (AREA)
- Control Of Ac Motors In General (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2011108443/07A RU2488215C2 (ru) | 2008-08-08 | 2008-10-13 | Система реализации изменения частоты и регулирования скорости ротора асинхронно и одновременно с приводом нескольких электродвигателей одним инвертором |
| EP08876695.1A EP2312745B1 (en) | 2008-08-08 | 2008-10-13 | A system for driving asynchronously multiple motors by one inverter and for realizing frequency variation and speed adjusting of rotors |
| AU2008360356A AU2008360356B2 (en) | 2008-08-08 | 2008-10-13 | A system for driving asynchronously multiple motors by one inverter and for realizing frequency variation and speed adjusting of rotors |
| BRPI0823022A BRPI0823022B1 (pt) | 2008-08-08 | 2008-10-13 | sistema para realização de controle de velocidade de rotor de frequência variável de forma assíncrona e simultânea pela condução de vários motores atravéz de um inversor. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810048732.2 | 2008-08-08 | ||
| CN2008100487322A CN101340174B (zh) | 2008-08-08 | 2008-08-08 | 用逆变器拖动多台电动机异步同时实现转子变频调速系统 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010015112A1 true WO2010015112A1 (zh) | 2010-02-11 |
Family
ID=40214157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2008/001722 Ceased WO2010015112A1 (zh) | 2008-08-08 | 2008-10-13 | 用逆变器拖动多台电动机异步同时实现转子变频调速系统 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US8159177B2 (zh) |
| EP (1) | EP2312745B1 (zh) |
| JP (1) | JP5432514B2 (zh) |
| KR (1) | KR101042314B1 (zh) |
| CN (1) | CN101340174B (zh) |
| AU (1) | AU2008360356B2 (zh) |
| BR (1) | BRPI0823022B1 (zh) |
| CA (1) | CA2674594C (zh) |
| RU (1) | RU2488215C2 (zh) |
| WO (1) | WO2010015112A1 (zh) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101643181B (zh) * | 2009-08-19 | 2013-09-18 | 宋贵生 | 起重机回转控制器 |
| CN102142799B (zh) * | 2011-03-30 | 2012-12-05 | 太原重工股份有限公司 | 一种可控硅定子调压调速并联运行电气控制系统 |
| CN102931890B (zh) * | 2011-08-11 | 2014-11-26 | 周顺新 | 一逆变桥拖动多台电机实现输入功率同时随负载和转速变化控制系统 |
| CN102530730B (zh) * | 2012-01-30 | 2013-02-13 | 中联重科股份有限公司 | 一种回转机构的控制系统及塔式起重机 |
| RU2525294C1 (ru) * | 2013-02-07 | 2014-08-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный исследовательский Томский политехнический университет" | Устройство управления и обеспечения живучести двигателя двойного питания |
| CN104635526B (zh) * | 2014-12-01 | 2017-11-24 | 国网上海市电力公司 | 一种起重机电磁隔离控制开关系统 |
| CN104467012A (zh) * | 2014-12-03 | 2015-03-25 | 无锡中鼎物流设备有限公司 | 一种堆垛机能量转换装置及包括该装置的堆垛机 |
| WO2018038301A1 (en) | 2016-08-26 | 2018-03-01 | Hugel Inc. | Stabilized liquid formulation of botulinum toxin and preparation method thereof |
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| JPH05260757A (ja) * | 1992-03-16 | 1993-10-08 | Isao Takahashi | 電動機駆動用インバータ装置 |
| JP2000224860A (ja) * | 1999-01-28 | 2000-08-11 | Matsushita Electric Ind Co Ltd | 電源装置及び電源システム |
| CN2453611Y (zh) * | 2000-11-17 | 2001-10-10 | 周顺新 | 一种带有多台电动机的转子变频调速装置 |
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2008
- 2008-08-08 CN CN2008100487322A patent/CN101340174B/zh active Active
- 2008-10-13 WO PCT/CN2008/001722 patent/WO2010015112A1/zh not_active Ceased
- 2008-10-13 BR BRPI0823022A patent/BRPI0823022B1/pt not_active IP Right Cessation
- 2008-10-13 RU RU2011108443/07A patent/RU2488215C2/ru active
- 2008-10-13 EP EP08876695.1A patent/EP2312745B1/en not_active Not-in-force
- 2008-10-13 AU AU2008360356A patent/AU2008360356B2/en not_active Ceased
- 2008-11-19 US US12/274,250 patent/US8159177B2/en not_active Expired - Fee Related
- 2008-12-19 JP JP2008323059A patent/JP5432514B2/ja not_active Expired - Fee Related
-
2009
- 2009-08-04 CA CA2674594A patent/CA2674594C/en active Active
- 2009-08-04 KR KR1020090071710A patent/KR101042314B1/ko not_active Expired - Fee Related
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| JPH05260757A (ja) * | 1992-03-16 | 1993-10-08 | Isao Takahashi | 電動機駆動用インバータ装置 |
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Non-Patent Citations (1)
| Title |
|---|
| See also references of EP2312745A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0823022B1 (pt) | 2019-02-05 |
| RU2011108443A (ru) | 2012-09-20 |
| CA2674594C (en) | 2013-07-30 |
| AU2008360356B2 (en) | 2014-07-24 |
| US8159177B2 (en) | 2012-04-17 |
| BRPI0823022A2 (pt) | 2015-07-28 |
| KR20100019343A (ko) | 2010-02-18 |
| EP2312745A4 (en) | 2013-11-27 |
| JP5432514B2 (ja) | 2014-03-05 |
| CN101340174A (zh) | 2009-01-07 |
| CA2674594A1 (en) | 2010-02-08 |
| RU2488215C2 (ru) | 2013-07-20 |
| AU2008360356A2 (en) | 2011-03-03 |
| EP2312745B1 (en) | 2016-12-14 |
| AU2008360356A1 (en) | 2010-02-11 |
| EP2312745A1 (en) | 2011-04-20 |
| US20100033123A1 (en) | 2010-02-11 |
| CN101340174B (zh) | 2010-08-04 |
| KR101042314B1 (ko) | 2011-06-17 |
| JP2010045958A (ja) | 2010-02-25 |
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