CN2850108Y - AC frequency change electric machine rotor lamination - Google Patents
AC frequency change electric machine rotor lamination Download PDFInfo
- Publication number
- CN2850108Y CN2850108Y CN 200520077275 CN200520077275U CN2850108Y CN 2850108 Y CN2850108 Y CN 2850108Y CN 200520077275 CN200520077275 CN 200520077275 CN 200520077275 U CN200520077275 U CN 200520077275U CN 2850108 Y CN2850108 Y CN 2850108Y
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- CN
- China
- Prior art keywords
- electric machine
- rotor
- dovetail groove
- frequency change
- change electric
- 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 relates to an AC frequency change electric machine rotor lamination of which the appearance is in a ring type flake shape. 38 rotor grooves are evenly distributed on the circumference of the ring type flake; each rotor groove is composed of a dovetail groove and a long groove, wherein the top of the dovetail groove is in a semicircular shape, and both ends of a bottom edge are provided with round corners. The top end of the dovetail groove points to the circle center of the rotor, the long groove is arranged outside the bottom edge of the dovetail groove, and a semicircular arc dividing strip is arranged between the dovetail groove and the long groove. The AC frequency change electric machine rotor lamination of the utility model can reduce the harmonic component of a frequency change electric machine so as to increase the efficiency of the AC frequency change electric machine, reduce the heating of the frequency change electric machine, enlarge the output torque of the electric machine and increase the power factors of the electric machine.
Description
Affiliated technical field
The utility model relates to a kind of alternating-current variable frequency motor rotor punching.
Background technology
Alternating-current variable frequency motor is with respect to common AC asynchronous motor, and alternating-current variable frequency motor is highly suitable for subway, light rail vehicle keeping higher operational efficiency in the broad frequency range very much.But, under inverter power supply, the electric current and voltage of alternating-current variable frequency motor is nonsinusoidal waveform often, contains a large amount of harmonic components, can be in motor produce a large amount of harmonic fields, the loss of motor, efficient, power factor, torque, heating etc. are produced a series of harmful effects.We are by anatomizing the factor that causes harmonic component, and the structure that draws rotor slot shape is the principal element that influences harmonic component.The flute profile of the rotor of common AC motor has a variety of, its design principle is that selected flute profile will have enough groove areas to reduce rotor copper loss, guaranteed efficiency, guarantee rotor tooth, there are enough magnetic conduction sectional areas in yoke portion, thereby take the form of semi-closed port as far as possible, such as: general small-capacity motor adopts trapezoidal or peariform slot, its shortcoming is that kinetic moment is little, middle capacity electrical machinery adopts deep trouth mouse cage flute profile or convex slot more, its shortcoming is that rotor magnetic is close too saturated, what use always in the middle large-size machine is two mouse cage flute profiles, and its shortcoming is the flute profile complexity, the processing technology complexity; And above-mentioned several flute profiles are all kept away the distortion of unavoidable air-gap field, the existence and the harmonic component of loss.
Summary of the invention
In order to overcome the deficiency of existing AC motor rotor punching, the utility model provides a kind of alternating-current variable frequency motor rotor punching, this alternating-current variable frequency motor rotor punching can not only satisfy the needs that conductor is written into, and can reduce the harmonic component of alternating-current variable frequency motor, thereby improve the efficient of alternating-current variable frequency motor, the motor feels hot in minimizing, the output torque of expanded motor, the power factor of raising motor.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of alternating-current variable frequency motor rotor punching, profile is an annular flake, be evenly distributed with 38 rotor on the annular flake circumference, rotor is that dovetail groove and elongated slot semicircle, that the two ends, base are provided with fillet are formed by the top, the rotor center of circle is pointed on the dovetail groove top, elongated slot is arranged on the outside, dovetail groove base, is provided with the semi arch divider between dovetail groove and elongated slot.
The beneficial effects of the utility model are, alternating-current variable frequency motor rotor punching of the present utility model can reduce the harmonic component of variable-frequency motor, thereby improve the efficient of alternating-current variable frequency motor, reduce that the motor feels hot, and the output torque of expanded motor improves the power factor (PF) of motor.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of alternating-current variable frequency motor rotor punching of the present utility model.
Fig. 2 is the structural representation of common AC motor rotor punching.
1. dovetail grooves among the figure, 2. elongated slot, 3. divider.
Embodiment
Alternating-current variable frequency motor rotor punching of the present utility model as shown in Figure 1, profile is an annular flake, be evenly distributed with 38 rotor on the annular flake circumference, rotor is that dovetail groove 1 and elongated slot 2 semicircle, that the two ends, base are provided with fillet are formed by the top, the rotor center of circle is pointed on dovetail groove 1 top, elongated slot 2 is arranged on the outside, dovetail groove 1 base, and 2 of dovetail groove 1 and elongated slots are provided with semi arch divider 3.
AC frequency change electric machine rotor lamination of the present utility model and common AC motor rotor punching as shown in Figure 2 Sheet is compared, and the semi arch divider 3 in a slyness of common flute profile architecture basics increase makes groove form one Closed structure had both satisfied the needs that conductor is written into, and reached again the function that suppresses harmonic wave simultaneously, made to exchange to become Frequently the harmonic component of motor greatly reduces, and efficient obviously improves, and the motor feels hot significantly reduces, and the output torque is big The width of cloth promotes.
Claims (1)
1. alternating-current variable frequency motor rotor punching, profile is an annular flake, be evenly distributed with 38 rotor on the annular flake circumference, it is characterized in that: rotor is that dovetail groove (1) and elongated slot (2) semicircle, that the two ends, base are provided with fillet are formed by the top, the rotor center of circle is pointed on dovetail groove (1) top, elongated slot (2) is arranged on the outside, dovetail groove (1) base, is provided with semi arch divider (3) between dovetail groove (1) and elongated slot (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520077275 CN2850108Y (en) | 2005-11-08 | 2005-11-08 | AC frequency change electric machine rotor lamination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520077275 CN2850108Y (en) | 2005-11-08 | 2005-11-08 | AC frequency change electric machine rotor lamination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2850108Y true CN2850108Y (en) | 2006-12-20 |
Family
ID=37522578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520077275 Expired - Fee Related CN2850108Y (en) | 2005-11-08 | 2005-11-08 | AC frequency change electric machine rotor lamination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2850108Y (en) |
-
2005
- 2005-11-08 CN CN 200520077275 patent/CN2850108Y/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061220 Termination date: 20141108 |
|
| EXPY | Termination of patent right or utility model |