CN2744053Y - Cage type rotor asynchronous speed regulating electric machine - Google Patents
Cage type rotor asynchronous speed regulating electric machine Download PDFInfo
- Publication number
- CN2744053Y CN2744053Y CN 200420097238 CN200420097238U CN2744053Y CN 2744053 Y CN2744053 Y CN 2744053Y CN 200420097238 CN200420097238 CN 200420097238 CN 200420097238 U CN200420097238 U CN 200420097238U CN 2744053 Y CN2744053 Y CN 2744053Y
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- CN
- China
- Prior art keywords
- rotor
- stator
- motor
- speed regulating
- rotating shaft
- 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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Abstract
The utility model discloses a winding cage rotor asynchronous speed regulating motor belonging to the technical field of motor, which is composed of a stator, a rotor, a stator frame and a rotating shaft. Wherein, the stator and the rotor are respectively divided into two parts of A and B. The A and B part of the stator are fixed on the stator frame, and the A and B part of the rotor are fixed on the rotating shaft. The windings of A and B part stator are connected in the mode of star connection or delta connection. The windings of A and B part rotor are connected in the mode of star connection with reverse-phase sequence. The utility model has the advantages of simple structure, reliable performance, good starting characteristic, convenient installation, convenient examination and repair, etc.
Description
(1) technical field
The utility model relates to a kind of cage rotor asynchronous speed-regulating motor, belongs to technical field of motors.
(2) background technology
The machinery tandem control is a kind of efficient energy-saving device that generally acknowledge countries in the world.The machinery tandem is that slip power is converted into a kind of technological means that mechanical output is used, it is that the wound type asynchronous machine slip ring is received rectifier, slip power is converted into direct current power supplies with DC motor, direct current machine directly and asynchronous motor mechanically connect together, drive load jointly.In the said apparatus, must use the slip ring mode slip power could be gone to drive DC generator work through over commutation, therefore limit its range of application.In addition, because frequent maintenance issues appears in the existence of carbon brush, reduced the reliability of device.Above-mentioned motor can not use in the environment that be corrosive inflammable and explosive; The inventor once proposed a kind of brushless electric machine reversal connection cascade speed regulator in Chinese utility model patent, with the existing DC generator in the alternative mechanical cascade speed regulator of wound type asynchronous motor, and two winding type asynchronous machine rotors are docked with rotor, dock with the subsidiary engine rotor leading-out wire by the main rotor lead-out wire, not only be convenient to during use install, safeguard and maintenance, and reduced equipment cost.
(3) summary of the invention
The utility model is at the deficiencies in the prior art, provide a kind of simple in structure, be convenient to the cage rotor asynchronous speed-regulating motor installing and overhaul.
This cage rotor asynchronous motor is made up of stator, rotor, out frame and rotating shaft, and stator wherein and rotor respectively are divided into A, B two parts, and A, B portion stator are fixed on the out frame, and A, B portion rotor are fixed in the rotating shaft; A, B portion stator winding are formed star connection or delta connection, and A, B portion rotor winding are star connection, the phase sequence reversal connection.
The utility model is that the structure to existing wound type asynchronous motor makes improvements, and two wound type asynchronous motors are combined as one, is placed in the support, becomes a novel asynchronous speed-regulating motor.Use the utlity model has following advantage: (1) reliability: do not have slip ring and carbon brush, minimizing accident and maintenance workload can be used for having the place of requirement of explosion proof.(2) efficient speed adjusting performance: the speed regulating method that was used for wound type asynchronous motor originally, this motor can be used, the rotor series resistance speed of former wound type asynchronous machine, the motor slip power is consumed on resistance entirely, so belong to the poor efficiency mode of speed regulation, and cage asynchronous machine serial-resistance speed-regulation, resistance is connected on B portion stator, consumption be B portion slip power.This part power is to deliver to B portion by the slip power that A portion produces, and wherein major part becomes B portion mechanical output and is utilized, and therefore remaining slip power consumption belong to efficient mode of speed regulation on resistance.(3) low investment: winding type asynchronous tandem control is because be the slip power of control rotor, the capacity of the Capacity Ratio cage-type rotor asynchronous machine frequency control of its speed regulating device is little, and also little around the speed regulating device capacity of the speed regulating device Capacity Ratio wound type asynchronous machine of cage motor, because the power of its control is the slip power of slip power.(4) good starting characteristic: can accomplish that starting torque is big, starting current is little, prolongs the life-span of driven equipment, reduces the impact to electrical network.Reduce maintenance load and downtime, reduced the capacity of network transformer and the conductor cross-section of cable.(5) the cage motor is applicable to below 1500 rev/mins, and tens kilowatts to 2000 kilowatts, the blower fan load of the pumps is applicable to that the oil-field oil pumper load all has average energy-conservation 30% energy-saving effect.(6) can design production seriation motor and be convenient to the user and select for use, install, safeguard, overhaul all and make things convenient for, for example: a, oil-field oil pumper are around seven kinds of cage dynamo series; B, Y series are around 1-200 kilowatt of cage motor subseries; C, 200-2000 kilowatt high pressure is around cage dynamo series etc.
(4) description of drawings:
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model stator and rotor winding diagrams;
Fig. 3 is a fundamental diagram of the present utility model.
Wherein, 1, A portion stator, 2, A portion rotor, 3, rotating shaft, 4, B portion rotor, 5, B portion stator, 6, out frame.
(5) embodiment
Embodiment: structure such as Fig. 1, Fig. 2 and shown in Figure 3, form by stator, rotor, out frame 6 and rotating shaft 3, stator wherein and rotor respectively are divided into A, B two parts, and A, B portion stator 1,5 are fixed on the out frame 6, and A, B portion rotor 2,4 are fixed in the rotating shaft; A, B portion stator 1,5 windings are formed star connection, and A, B portion rotor 2,4 windings are star connection, the phase sequence reversal connection, as shown in Figure 3.Operation principle is as shown in Figure 3: the stator lead A of A portion, B, C connect power supply, and B stator lead a, b, c connect the three-phase adjustable resistance.Power turn-on, electric motor starting.A portion rotor output slip power is delivered to B portion rotor, the principle of wiring be negative-phase sequence relatively as shown in Figure 2.It is opposite with direction of motor rotation that B portion rotor produces rotating magnetic field, acts on B portion stator, and it is consistent with A portion generation torque direction to produce torque direction.The slip power size of control B portion stator just can be carried out speed governing.
Claims (1)
1, a kind of cage rotor asynchronous speed-regulating motor is made up of stator, rotor, out frame and rotating shaft, it is characterized in that, stator and rotor respectively are divided into A, B two parts, and A, B portion stator are fixed on the out frame, and A, B portion rotor are fixed in the rotating shaft; A, B portion stator winding are formed star connection or delta connection, and A, B portion rotor winding are star connection, the phase sequence reversal connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420097238 CN2744053Y (en) | 2004-10-26 | 2004-10-26 | Cage type rotor asynchronous speed regulating electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420097238 CN2744053Y (en) | 2004-10-26 | 2004-10-26 | Cage type rotor asynchronous speed regulating electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2744053Y true CN2744053Y (en) | 2005-11-30 |
Family
ID=35634069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420097238 Expired - Fee Related CN2744053Y (en) | 2004-10-26 | 2004-10-26 | Cage type rotor asynchronous speed regulating electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2744053Y (en) |
-
2004
- 2004-10-26 CN CN 200420097238 patent/CN2744053Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051130 Termination date: 20091126 |