CN103166543A - Multi-split variable-frequency speed control system of energy-saving feedback type brushless coiling motor - Google Patents
Multi-split variable-frequency speed control system of energy-saving feedback type brushless coiling motor Download PDFInfo
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- CN103166543A CN103166543A CN2011104067242A CN201110406724A CN103166543A CN 103166543 A CN103166543 A CN 103166543A CN 2011104067242 A CN2011104067242 A CN 2011104067242A CN 201110406724 A CN201110406724 A CN 201110406724A CN 103166543 A CN103166543 A CN 103166543A
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Abstract
The invention discloses a multi-split variable-frequency speed control system of an energy-saving feedback type brushless coiling motor. The multi-split variable-frequency speed control system of the energy-saving feedback type brushless coiling motor comprises a brushless coiling motor set, a drive controller set, an isolator set and an energy feedback device. According to the multi-split variable-frequency speed control system of the energy-saving feedback type brushless coiling motor, a plurality of drive controllers are used for respectively controlling a plurality of brushless motors. The multi-split variable-frequency speed control system of the energy-saving feedback type brushless coiling motor has the advantages of being simple in circuit, small in size, low in cost, high in reliability, capable of saving energy and the like.
Description
Technical field
The present invention relates to field of mechanical technique, particularly a kind of with the frequency control of small-power driving governor control high-power brushless coiling electric motor, the energy-saving feedback type brushless winding motor one with an energy feedback device dragging multiple brushless winding motor drags changeable frequency governing system simultaneously.
Background technology
Motor is the prime mover in the operating mechanisms such as blower fan, water pump and crane, can convert electrical energy into mechanical energy, obtains using extremely widely in industrial production.
In traditional motor variable speed system, a frequency converter carries out frequency control to a motor, and the required energy of motor is all provided by frequency converter, so frequency inverter capacity used is larger than capacity motor.If but motor requires the frequency converter energy two-way flow, will ask has two three-phase full-controlled bridges in frequency converter, thereby realizes two-way " AC-DC-AC " conversion.
This shows, traditional motor variable speed system, frequency-tuning range is wide, not limited by mains frequency; But need the use capacity to be slightly larger than the frequency converter of capacity motor, and if multiple electric motors just needs to use many frequency converters, make systems bulky, involve great expense.
The brushless winding motor is a kind of New-type electric machine, and two windings are arranged on motor stator, and a winding directly gets access to grid, and another winding connects driving governor, can realize the frequency control of motor by driving governor.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of energy-saving feedback type brushless winding motor one and drags changeable frequency governing system.
For solving the problems of the technologies described above, the present invention realizes as follows: a kind of energy-saving feedback type brushless winding motor one drags changeable frequency governing system, comprises
A brushless winding motor unit, described brushless winding motor unit contains a motor at least;
A driving governor group, described driving governor group contains a driving governor at least; In order to coupled described motor is controlled, the different frequency AC signal that simultaneously described motor is provided is carried out rectification;
An isolator group, described isolator group contains an isolator at least; In order to isolate different described motor, make between different described motor can not influence each other, guarantee system's normal operation;
An energy feedback plays device, after being direct current in order to the AC rectification with the different frequency of each motor output, is reverse into industrial-frequency alternating current, and with energy back to described motor or electrical network.
Good effect of the present invention is: the present invention adopts many driving governors to control respectively many brushless electric machines, a brushless electric machine is equipped with a driving governor, control the motor frequency conversion operation by driving governor, the driving governor of available smaller power is controlled the motor of relatively high power, simultaneously, multiple electric motors shares an inverter, and each motor can operate in different states simultaneously.
The present invention feeds back to electrical network with the slip power in motor operation course, has effectively saved the energy.And motor do not have brush, increased system's reliability of operation.
The present invention controls the work of system by microprocessor; Integrated Real-time Processing is carried out in the voltage, electric current and the outside order that collect; effectively guarantee the independently frequency control of each motor; simultaneity factor also has overload, overcurrent, overvoltage and the defencive function such as under-voltage, guarantees the security of system operation.
The present invention has the characteristics such as circuit is simple, volume is little, cost is low, reliability is high, the saving energy.
Description of drawings
Fig. 1 is many traditional different operating state motor variable-frequency speed-regulating system schematic diagrams.
Fig. 2 realizes the comprehensive schematic diagram of high-power brushless coiling electric motor frequency conversion speed-adjusting system with the small-power driving governor simultaneously for drag the operation of separate unit brushless winding motor with energy feedback device.
Fig. 3 is for realizing the comprehensive schematic diagram of high-power brushless coiling electric motor frequency conversion speed-adjusting system with the small-power driving governor simultaneously with the operation of energy feedback device dragging multiple brushless winding motor.
Embodiment
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
As shown in Figure 2 and Figure 3, a kind of energy-saving feedback type brushless winding motor one of the present invention drags changeable frequency governing system, comprising:
A brushless winding motor unit, contain multiple electric motors: M1, M2, M3 etc., different motors can operate in respectively different operating states, as electronic, regenerative braking etc.
A driving governor group contains a plurality of driving governors: Z1, Z2, Z3 etc., and in order to coupled motor is controlled, the different frequency AC signal that simultaneously motor is provided is carried out rectification.
An isolator group contains a plurality of isolators: D1, D2, D3 etc., accomplishes the isolation between different motor, makes can not influence each other between different motor, guarantees system's normal operation.
An energy feedback plays device, after being direct current in order to the AC rectification with the different frequency of each motor output, is reverse into industrial-frequency alternating current, and with energy back to motor or electrical network.
See also shown in Figure 2ly, be the present invention's the first most preferred embodiment; Consult and Figure 3 shows that the present invention's the second most preferred embodiment.
As can be seen from Figure 2: first embodiment of the invention consists of an integral body by brushless winding motor 1, driving governor 2, energy feedback device 3, dc capacitor 4; Wherein:
Two stator winding of described brushless winding motor 1, one of them directly gets access to grid, and another input with driving governor 2 is connected;
Described driving governor 2 is three-phase full-controlled bridge, a stator winding of input termination brushless winding motor 1, and output is by connecing the input of energy feedback device 3 after dc capacitor 4 voltage stabilizings;
Described energy feedback device 3 is three-phase full-controlled bridge, output and the dc capacitor 4 of input termination driving governor 2, and output gets access to grid;
Described dc capacitor 4 is connected in parallel on the output of driving governor 2 and the input of energy feedback device 3.
It can also be seen that from Fig. 3: second embodiment of the invention consists of an integral body by brushless winding motor unit 11, driving governor group 12, dc capacitor group 13, isolator group 14 and energy feedback device 15; Wherein:
Three motor M 1, M2 and M3 one of them stator winding separately in described brushless winding group of motors 11 gets access to grid respectively, and another stator winding is connected with each self-corresponding input of 3 driving governor Z1, Z2 and Z3 in driving governor group 12 respectively successively;
Three driving governor Z1, Z2 and Z3 in described driving governor group 12 are three-phase full-controlled bridge, its input is connected with each self-corresponding stator winding of three motor M 1, M2 and M3 in brushless winding group of motors 11 respectively, and its output connects respectively three isolator D1, D2 of isolator group 14 and the anode of D3 after three capacitor C 1, C2 and the C3 voltage stabilizing by dc capacitor group 13;
Three isolator D1, D2 in described isolator group 14 and the anode of D3 are connected with three dc capacitor C1, C2 of dc capacitor group 14, the anode of C3 respectively, just be connected with three driving governor Z1, Z2 of driving governor group 12, the output of Z3 simultaneously, the isolator negative electrode links together, and connects the positive input terminal of energy feedback device 15;
Described energy feedback device 15 is three-phase full-controlled bridge, its input is just connecing three isolator D1, D2 of isolator group 14 and the negative electrode of D3, negative three dc capacitor C1, C2 of dc capacitor group 14, the negative terminal of C3 of connecing of its input, be connected with three driving governor Z1, Z2 of driving governor group 12, the output negative of Z3 simultaneously, its output gets access to grid.
one of purpose of the present invention is to adopt the small-power driving governor to realize the frequency control of heavy-duty motor, traditional frequency conversion speed-adjusting system, for be asynchronous motor or synchronous motor, the capacity of required frequency converter is slightly larger than the capacity of motor, and employing brushless winding motor, stator winding of motor directly gets access to grid, another stator winding connects driving governor, most of power is directly provided by electrical network, and without driving governor, driving governor only need to provide slip power, so the driving governor of an available smaller power is controlled heavy-duty motor.
Two of purpose of the present invention is with the operation of energy feedback device dragging multiple brushless winding motor, is namely multiple electric motors and driving governor power supply thereof with an energy feedback device, and the energy feedback of perhaps multiple electric motors and driving governor thereof being exported is to electrical network.
Three of purpose of the present invention is to make this system have energy back recycling function, effectively energy savings.
Claims (5)
1. an energy-saving feedback type brushless winding motor one drags changeable frequency governing system, it is characterized in that, comprises
A brushless winding motor unit, described brushless winding motor unit contains a motor at least;
A driving governor group, described driving governor group contains a driving governor at least; In order to coupled described motor is controlled, the different frequency AC signal that simultaneously described motor is provided is carried out rectification;
An isolator group, described isolator group contains an isolator at least; In order to isolate different described motor, make between different described motor can not influence each other, guarantee system's normal operation;
An energy feedback plays device, after being direct current in order to the AC rectification with the different frequency of each motor output, is reverse into industrial-frequency alternating current, and with energy back to described motor or electrical network.
2. a kind of energy-saving feedback type brushless winding motor one according to claim 1 drags changeable frequency governing system, it is characterized in that, a plurality of motor in described brushless winding group of motors one of them stator winding separately gets access to grid respectively, and another stator winding is connected with each self-corresponding input of a plurality of driving governors in described driving governor group respectively successively.
3. a kind of energy-saving feedback type brushless winding motor one according to claim 1 drags changeable frequency governing system, it is characterized in that, a plurality of driving governors in described driving governor group are three-phase full-controlled bridge, and its output connects respectively the anode of a plurality of isolators of described isolator group afterwards by a plurality of capacitance voltage stabilizings of dc capacitor group.
4. a kind of energy-saving feedback type brushless winding motor one according to claim 1 drags changeable frequency governing system, it is characterized in that, the anode of a plurality of isolators in described isolator group is connected with the anode of a plurality of dc capacitors of described dc capacitor group respectively, the output of while with a plurality of driving governors of described driving governor group just is connected, described isolator negative electrode links together, and connects the positive input terminal of described energy feedback device.
5. a kind of energy-saving feedback type brushless winding motor one according to claim 1 drags changeable frequency governing system, it is characterized in that, described energy feedback device is three-phase full-controlled bridge, its input is just connecing the negative electrode of a plurality of isolators of described isolator group, the negative negative terminal that connects a plurality of dc capacitors of described dc capacitor group of its input, the output negative of while with a plurality of driving governors of described driving governor group is connected, and its output gets access to grid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104067242A CN103166543A (en) | 2011-12-09 | 2011-12-09 | Multi-split variable-frequency speed control system of energy-saving feedback type brushless coiling motor |
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| CN2011104067242A CN103166543A (en) | 2011-12-09 | 2011-12-09 | Multi-split variable-frequency speed control system of energy-saving feedback type brushless coiling motor |
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| CN103166543A true CN103166543A (en) | 2013-06-19 |
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| CN2011104067242A Pending CN103166543A (en) | 2011-12-09 | 2011-12-09 | Multi-split variable-frequency speed control system of energy-saving feedback type brushless coiling motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994813A (en) * | 2017-12-23 | 2018-05-04 | 江西省洛锡实业有限公司 | A kind of two-way frequency conversion speed-adjusting system of three level of high-power brushless double-fed machine |
| CN108462412A (en) * | 2018-03-09 | 2018-08-28 | 周顺新 | Brushless feedback electric-machine directly-driven intelligence control system |
| CN110962619A (en) * | 2019-10-30 | 2020-04-07 | 东南大学 | Semi-centralized open-winding primary permanent magnet direct current motor traction system for urban rail transit |
| CN114576701A (en) * | 2020-11-30 | 2022-06-03 | 青岛海尔空调器有限总公司 | Air conditioner |
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| CN201039068Y (en) * | 2007-05-15 | 2008-03-19 | 天津市新源电气科技有限公司 | Speed-variable frequency constant coiling brushless and dual-feedback generator control device |
| CN101320958A (en) * | 2008-07-02 | 2008-12-10 | 周顺新 | Asynchronously and simultaneously implementing rotor variable-frequency control system by semi-bridge inverter driving multiple electric motors |
| TW201006119A (en) * | 2008-07-31 | 2010-02-01 | shun-xin Zhou | Drives the many electric motor non-synchronizations with the invertor simultaneously to realize rotor frequency conversion velocity modulation system |
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2011
- 2011-12-09 CN CN2011104067242A patent/CN103166543A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201039068Y (en) * | 2007-05-15 | 2008-03-19 | 天津市新源电气科技有限公司 | Speed-variable frequency constant coiling brushless and dual-feedback generator control device |
| CN101320958A (en) * | 2008-07-02 | 2008-12-10 | 周顺新 | Asynchronously and simultaneously implementing rotor variable-frequency control system by semi-bridge inverter driving multiple electric motors |
| TW201006119A (en) * | 2008-07-31 | 2010-02-01 | shun-xin Zhou | Drives the many electric motor non-synchronizations with the invertor simultaneously to realize rotor frequency conversion velocity modulation system |
Non-Patent Citations (1)
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| 陈继华: "无刷双馈电机调速***的研究", 《中国优秀博硕士学位论文全文数据库》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994813A (en) * | 2017-12-23 | 2018-05-04 | 江西省洛锡实业有限公司 | A kind of two-way frequency conversion speed-adjusting system of three level of high-power brushless double-fed machine |
| CN108462412A (en) * | 2018-03-09 | 2018-08-28 | 周顺新 | Brushless feedback electric-machine directly-driven intelligence control system |
| CN110962619A (en) * | 2019-10-30 | 2020-04-07 | 东南大学 | Semi-centralized open-winding primary permanent magnet direct current motor traction system for urban rail transit |
| CN114576701A (en) * | 2020-11-30 | 2022-06-03 | 青岛海尔空调器有限总公司 | Air conditioner |
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Application publication date: 20130619 |