CN2182494Y - Rotor chopping speed-regulating device for asynchronous motor - Google Patents
Rotor chopping speed-regulating device for asynchronous motor Download PDFInfo
- Publication number
- CN2182494Y CN2182494Y CN 93247332 CN93247332U CN2182494Y CN 2182494 Y CN2182494 Y CN 2182494Y CN 93247332 CN93247332 CN 93247332 CN 93247332 U CN93247332 U CN 93247332U CN 2182494 Y CN2182494 Y CN 2182494Y
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- CN
- China
- Prior art keywords
- speed
- rotor
- chopping
- resistance
- regulating device
- 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.)
- Expired - Fee Related
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- 238000004804 winding Methods 0.000 claims abstract description 12
- 238000009499 grossing Methods 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003990 capacitor Substances 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- Control Of Ac Motors In General (AREA)
Abstract
Disclosed is rotor chopping speed-regulating device for asynchronous motor, which relates to a speed-regulating device for asynchronous motor. The utility model is formed by connecting a three-phase resistor to a chopping speed-regulating main circuit in parallel which is composed of a traditional electric motor rotor winding group, a three-phase bridge diode rectifier, a smoothing reactor, a chopping resistor and a chopper, and connecting a capacitor to the branch line of the chopping resistor in series. The circuit combines starting resistors and speed-regulating resistors to integration, which increases the utilization ratio of the resistors and makes the chopping speed-regulating range widened as well as the start safe and reliable. Using the circuit in the chopping speed-regulating device with rotor string resistors, an obvious effect of energy saving by about 20% can be produced when the draught fans and water pumps are driven to regulate speeds.
Description
The utility model relates to the asynchronous motor drive device.
The main circuit of the asynchronous machine rotor chopper speed regulating device of continuing to use at present as shown in Figure 1, it comprises wire-wound asynchronous motor rotor winding M, three-phase bridge diode rectifier D, smoothing reactor L
d, copped wave resistance R and chopper ch, rotor winding output potential are through rectifier rectification, and the circuit that input copped wave resistance and chopper are in parallel after the smoothing reactor filtering during work, is recently realized the copped wave rheostatic control by the admittance that changes chopper.The main circuit of this traditional chopper speed regulating device still has following weak point:
1. need frequency sensitive trheostat be set in addition as starting device during electric motor starting, starting just inserts chopper after at a high speed, and frequency sensitive trheostat is then cut not to be re-used.
2. copped wave resistance R is difficult to be designed to have the speed adjustable range of broad.
3. rotor loop easily because of switch switching sequence mismate or fault cause the rotor loop open circuit, makes chopper power semiconductor, motor windings that the danger of the instantaneous overvoltage of suffering be arranged, and easily causes fault.
In view of above-mentioned, the purpose of this utility model is to propose a kind of speed-regulating range width, start safe and reliable, the asynchronous machine rotor chopper speed regulating device that utilization rate of equipment and installations is high.
The utility model is realized as follows: in the rotor winding of existing rotor chopper speed regulating device main circuit and connect fixedly three-phase resistance, series capacitance in the copped wave resistance branch.
Be illustrated below in conjunction with accompanying drawing.
Fig. 1 is the main circuit of conventional rotors chopper speed regulating device;
Fig. 2 is the main circuit of the utility model rotor chopper speed regulating device.
With reference to Fig. 2, one group of fixing three-phase resistance R in parallel in wire-wound asynchronous motor rotor winding M
Q, in the branch road of copped wave resistance R, seal in the absorption capacitor C, the output potential E of rotor winding
2S, through the direct voltage U of three-phase bridge diode rectifier D rectification output
dBy smoothing reactor L
dAfter the filtering, the circuit that input copped wave capacitance-resistance R-C and chopper ch are in parallel during work, can be realized the copped wave rheostatic control by the admittance ratio that changes chopper.
The utility model is owing to inserted fixed resistance at the rotor winding, this resistance is born the increase starting torque when starting, reduce the effect of starting current, during operation then as the part of copped wave resistance, both improved the rotating speed upper limit, two combine into one to make starting resistance and speed adjusting resistance again, improved the resistance utilance, because copped wave resistance adopts resistance R, capacitor C cascaded structure, utilize after the electric capacity charging every straight effect, make the equivalent resistance of copped wave capacitance-resistance branch road be infinity, thereby significantly reduced the rotating speed lower limit, obviously enlarged the chopping regulating speed scope.Again because resistance R is arranged
QFixedly be connected on the overvoltage injury that makes rotor loop not have the open circuit moment forever and cause thus in the rotor winding, so starting is safe and reliable.
The utility model is used for asynchronous machine rotor crosstalk resistance chopper speed regulating device, is driving blower fan, and pump speed control can produce nearly 20% obvious energy-saving effect.
Claims (1)
1, a kind of asynchronous machine rotor chopper speed regulating device, its main circuit contains rotor winding [M], three-phase bridge diode rectifier [D], smoothing reactor [Ld], copped wave resistance [R] and chopper [ch] is characterized in that it also contains one group of three-phase resistance [R
Q] and electric capacity [C], resistance [R
Q] in parallel with the rotor three-phase winding, electric capacity [C] is connected into copped wave capacitance-resistance R-C branch road with copped wave resistance [R], and the output of rotor winding after the smoothing reactor filtering, is imported the circuit that copped wave capacitance-resistance R-C and chopper [ch] are in parallel through rectifier rectification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247332 CN2182494Y (en) | 1993-12-06 | 1993-12-06 | Rotor chopping speed-regulating device for asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247332 CN2182494Y (en) | 1993-12-06 | 1993-12-06 | Rotor chopping speed-regulating device for asynchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2182494Y true CN2182494Y (en) | 1994-11-09 |
Family
ID=33819762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93247332 Expired - Fee Related CN2182494Y (en) | 1993-12-06 | 1993-12-06 | Rotor chopping speed-regulating device for asynchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2182494Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136823A (en) * | 2011-05-06 | 2011-07-27 | 薄焕林 | Alternating-current load control system |
| CN102170264A (en) * | 2011-04-15 | 2011-08-31 | 苏州新广济工贸有限公司 | Novel crane wound motor rotor chopping speed regulation system and method |
| CN113285635A (en) * | 2021-05-28 | 2021-08-20 | 哈尔滨工业大学 | Multiphase permanent magnet synchronous motor system |
| CN113315137A (en) * | 2021-05-28 | 2021-08-27 | 哈尔滨工业大学 | Three-phase hybrid excitation synchronous phase modulator system |
| CN113328594A (en) * | 2021-05-28 | 2021-08-31 | 哈尔滨工业大学 | Alternating-current magnetic field control multiphase flywheel pulse generator system |
-
1993
- 1993-12-06 CN CN 93247332 patent/CN2182494Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170264A (en) * | 2011-04-15 | 2011-08-31 | 苏州新广济工贸有限公司 | Novel crane wound motor rotor chopping speed regulation system and method |
| CN102136823A (en) * | 2011-05-06 | 2011-07-27 | 薄焕林 | Alternating-current load control system |
| CN102136823B (en) * | 2011-05-06 | 2013-09-04 | 薄焕林 | Alternating-current load control system |
| CN113285635A (en) * | 2021-05-28 | 2021-08-20 | 哈尔滨工业大学 | Multiphase permanent magnet synchronous motor system |
| CN113315137A (en) * | 2021-05-28 | 2021-08-27 | 哈尔滨工业大学 | Three-phase hybrid excitation synchronous phase modulator system |
| CN113328594A (en) * | 2021-05-28 | 2021-08-31 | 哈尔滨工业大学 | Alternating-current magnetic field control multiphase flywheel pulse generator system |
| CN113315137B (en) * | 2021-05-28 | 2022-09-13 | 哈尔滨工业大学 | Three-phase hybrid excitation synchronous phase modulator system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |