CN203399041U - Frequency conversion speed regulating device of high-power alternating-current winding motor - Google Patents
Frequency conversion speed regulating device of high-power alternating-current winding motor Download PDFInfo
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- CN203399041U CN203399041U CN201320381525.5U CN201320381525U CN203399041U CN 203399041 U CN203399041 U CN 203399041U CN 201320381525 U CN201320381525 U CN 201320381525U CN 203399041 U CN203399041 U CN 203399041U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 19
- 230000001105 regulatory effect Effects 0.000 title abstract description 9
- 238000004804 winding Methods 0.000 title abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000007858 starting material Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of high-power alternating-current winding motors, in particular to a frequency conversion speed regulating device of a high-power alternating-current winding motor. The frequency conversion speed regulating device is capable of utilizing a rotor frequency conversion speed regulating device and a frequency converter to perform frequency-conversion speed regulation. The frequency conversion speed regulating device of the high-power alternating-current winding motor includes a liquid resistance starter, a rotor frequency conversion speed regulating device, a concentrated control cabinet, a high-voltage cabinet, a PLC control device, a starting cabinet and a frequency converter. With the frequency conversion speed regulating device adopted, smooth stepless speed regulation of the high-power alternating-current winding motor can be realized; speed regulation control modes are flexible; speed regulation efficiency is high; and the switching of speed-regulation operation and full-speed operation, the switching of open-loop operation and closed-loop operation and the switching of local control and remote control can be realized. With rotation speed/current double closed-loop control adopted, dynamic precision of rotation speed can be ensured, and overload current can be effectively inhibited. Perfect protection procedures are realized. With the frequency conversion speed regulating device, the energy saving effect of enterprises is significant, power consumption is reduced, and production cost is saved.
Description
Technical field
The utility model relates to high power AC coiling electric motor technical field, specifically a kind of high power AC coiling electric motor RHVC of utilizing regulation device and frequency converter to carry out frequency control.
Background technology
What the main motors of equipment such as six meters of traditional metal-planing machines, three meters of open side planers, four meters of metal-planing machines, large-scale vertical lathe used is high power AC coiling electric motor, the governing system of this high power AC coiling electric motor is more complicated, Advocate-drag system be take DC speed regulation as main, and starting current is larger, control circuit generally adopts the relay control mode of contact., easily there is the problems such as machining accuracy is low, speed adjusting performance is poor, electric fault frequently occurs, production efficiency is low, care and maintenance difficulty is large in this electrical control device once old, can not meet the needs of normal production.
Utility model content
The purpose of this utility model is to provide a kind of high power AC coiling electric motor RHVC, and complicated to solve high power AC coiling electric motor governing system, starting current is large, the problem that mode of speed regulation falls behind.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of high power AC coiling electric motor RHVC, it comprises liquid resistance starter, regulation device, centralized control cabinet, high-voltage board, PLC control device, start cabinet, frequency converter, the input of described liquid resistance starter is connected with power supply, the output of described liquid resistance starter is connected with an input of described regulation device, another input of described regulation device is connected with the output of described centralized control cabinet, another input of described regulation device is connected with an output of transformer, the output of described regulation device is connected with the input of the first A.C. contactor, an output of described the first A.C. contactor is connected with hydraulic pump motor, another output of described the first A.C. contactor is connected with spindle motor.
Liquid resistance starter starter claims again " liquid rheostat ", its operation principle is the distance of two parallel plate electrodes in conducting liquid to be reduced gradually until be zero by mechanical driving device, the resistance value sealing in rotor loop is smoothly reduced, thereby the load-carrying that realizes Wound-rotor type large and medium motor smoothly start.The regulation device that the utility model adopts is external feedback type speed regulating device, startup, the speed-regulating function of mainly realizing motor, it mainly comprises following part: actuating section, bypass segment, rectifying part, copped wave part, Converting Unit, control section.When three phase mains passes through actuating section, regulation device starts to start, by three phase full bridge rectifying part, alternating current is converted to direct current, by inverter, provide constant direct current back-emf, when device works in speed governing state, by the power inverting after copped wave is controlled, be that external feedback winding or Converting Unit are delivered in three-phase main-frequency interchange, regulation device starts completely, finally by rotor loop access rectification and the inverter of coiling electric motor, by different control modes, the impedance that rectification and inverter are presented not etc., thereby change the resistance in rotor loop, reach the object of final speed governing.
As further improvement of the utility model, the input of described transformer is connected with the output of described high-voltage board, another output of described transformer is connected with an input of described startup cabinet, another input of described startup cabinet is connected with an output of described centralized control cabinet, the output of described startup cabinet is connected with an output of described frequency conversion tank, the output of described frequency conversion tank is connected with the input of the second A.C. contactor, an output of described the second A.C. contactor is connected with hydraulic pump motor, another output of described the second A.C. contactor is connected with spindle motor.
In the utility model, the frequency control function of motor also can realize by set frequency converter.
As a more step of the present utility model, improve, the input of described PLC control device is connected with the output of filter amplifier, the input of described filter amplifier is connected with the output of transducer, the output of described transducer is connected with equipment, an output of described PLC control device is connected with another input of described regulation device, and another output of described PLC control device is connected with the input of described startup cabinet.
By use of the present utility model, high power AC coiling electric motor is realized smooth stepless speed-regulating in speed adjustable range, because speed-regulating control device is only controlled the part capacity of motor, so its loss is less, speed efficiency is higher, power savings is better, can realize the conversion of speed governing operation and full speed running, open loop operation and operation with closed ring conversion (or manually operation and the conversion of operation automatically), control on the spot the conversion of controlling with a distant place, adopt rotating speed and current double closed-loop to control, not only guaranteed the dynamic accuracy of rotating speed but also can effectively suppress overload current; Be equipped with perfect safeguard measure.By use of the present utility model, industry energy conservation effect is remarkable, has reduced power consumption, has saved production cost.
Figure of description
Fig. 1 is the connection block diagram of high power AC coiling electric motor RHVC;
In figure: 1, power supply, 2, liquid resistance starter, 3, regulation device, 4, the first A.C. contactor, 5, centralized control cabinet, 6, high-voltage board, 7, PLC control device, 8, start cabinet, 9, frequency converter, 10, the second A.C. contactor, 11, hydraulic pump motor, 12, spindle motor, 13, equipment, 14, filter amplifier, 15, pressure sensor, 16, transformer.
Embodiment
A kind of high power AC coiling electric motor RHVC as shown in Figure 1, it comprises liquid resistance starter 2, regulation device 3, centralized control cabinet 5, high-voltage board 6, PLC control device 7, start cabinet 8, frequency converter 9, the input of liquid resistance starter 2 is connected with power supply 1, the output of liquid resistance starter 2 is connected with an input of regulation device 3, another input of regulation device 3 is connected with the output of centralized control cabinet 5, another input of regulation device 3 is connected with an output of transformer 16, the output of regulation device 3 is connected with the input of the first A.C. contactor 4, an output of the first A.C. contactor 4 is connected with hydraulic pump motor 11, another output of the first A.C. contactor 4 is connected with spindle motor 12.
The input of transformer 16 is connected with the output of high-voltage board 6, another output of transformer 16 is connected with an input that starts cabinet 8, starting another input of cabinet 8 and an output of centralized control cabinet 5 is connected, starting the output of cabinet 8 and an output of frequency conversion tank 9 is connected, the output of frequency conversion tank 9 is connected with the input of the second A.C. contactor 10, an output of the second A.C. contactor 10 is connected with hydraulic pump motor 11, and another output of the second A.C. contactor 11 is connected with spindle motor 12.
The input of PLC control device 7 is connected with the output of filter amplifier 14, the input of filter amplifier 14 is connected with the output of transducer 15, the output of transducer 15 is connected with equipment 13, an output of PLC control device 7 is connected with another input of regulation device 3, and another output of PLC control device 7 is connected with the input that starts cabinet 8.
Claims (3)
1. a high power AC coiling electric motor RHVC, it comprises liquid resistance starter (2), regulation device (3), centralized control cabinet (5), high-voltage board (6), PLC control device (7), start cabinet (8), frequency converter (9), it is characterized in that: the input of described liquid resistance starter (2) is connected with power supply (1), the output of described liquid resistance starter (2) is connected with an input of described regulation device (3), another input of described regulation device (3) is connected with the output of described centralized control cabinet (5), another input of described regulation device (3) is connected with an output of transformer (16), the output of described regulation device (3) is connected with the input of the first A.C. contactor (4), an output of described the first A.C. contactor (4) is connected with hydraulic pump motor (11), another output of described the first A.C. contactor (4) is connected with spindle motor (12).
2. high power AC coiling electric motor RHVC according to claim 1, its feature exists: the input of described transformer (16) is connected with the output of described high-voltage board (6), another output of described transformer (16) is connected with an input of described startup cabinet (8), another input of described startup cabinet (8) is connected with an output of described centralized control cabinet (5), the output of described startup cabinet (8) is connected with an output of described frequency conversion tank (9), the output of described frequency conversion tank (9) is connected with the input of the second A.C. contactor (10), an output of described the second A.C. contactor (10) is connected with hydraulic pump motor (11), another output of described the second A.C. contactor (11) is connected with spindle motor (12).
3. high power AC coiling electric motor RHVC according to claim 1 and 2, its feature exists: the input of described PLC control device (7) is connected with the output of filter amplifier (14), the input of described filter amplifier (14) is connected with the output of transducer (15), the output of described transducer (15) is connected with equipment (13), an output of described PLC control device (7) is connected with another input of described regulation device (3), another output of described PLC control device (7) is connected with the input of described startup cabinet (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320381525.5U CN203399041U (en) | 2013-06-30 | 2013-06-30 | Frequency conversion speed regulating device of high-power alternating-current winding motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320381525.5U CN203399041U (en) | 2013-06-30 | 2013-06-30 | Frequency conversion speed regulating device of high-power alternating-current winding motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203399041U true CN203399041U (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320381525.5U Expired - Fee Related CN203399041U (en) | 2013-06-30 | 2013-06-30 | Frequency conversion speed regulating device of high-power alternating-current winding motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203399041U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320039A (en) * | 2014-10-31 | 2015-01-28 | 武汉钢铁(集团)公司 | Drive control method and device of final dusting high-voltage motor of steel mill |
| CN110572081A (en) * | 2019-09-11 | 2019-12-13 | 湖北金顿电气有限公司 | Pressure protection device and method for liquid resistor soft start cabinet |
-
2013
- 2013-06-30 CN CN201320381525.5U patent/CN203399041U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320039A (en) * | 2014-10-31 | 2015-01-28 | 武汉钢铁(集团)公司 | Drive control method and device of final dusting high-voltage motor of steel mill |
| CN110572081A (en) * | 2019-09-11 | 2019-12-13 | 湖北金顿电气有限公司 | Pressure protection device and method for liquid resistor soft start cabinet |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20160630 |
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| CF01 | Termination of patent right due to non-payment of annual fee |