CN202019247U - Alternating-current variable frequency motor - Google Patents
Alternating-current variable frequency motor Download PDFInfo
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- CN202019247U CN202019247U CN2011201130112U CN201120113011U CN202019247U CN 202019247 U CN202019247 U CN 202019247U CN 2011201130112 U CN2011201130112 U CN 2011201130112U CN 201120113011 U CN201120113011 U CN 201120113011U CN 202019247 U CN202019247 U CN 202019247U
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- variable frequency
- alternating
- motor
- frequency motor
- current variable
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Abstract
The utility model relates to a motor, in particular to a rotor punching sheet of an alternating-current variable frequency motor. The appearance of the rotor punching sheet of the alternating-current variable frequency motor is an annular thin sheet; 38 rotor slots are uniformly formed on the circumference of the annular thin sheet; each of the rotor slots consists of a trapezoidal slot of which the top end is semicircular and both ends of the bottom edge are provided with circular beads, and an elongated slot; the top end of the trapezoidal slot points to the circle center of a rotor; the elongated slot is formed on the outer side of the bottom edge of the trapezoidal slot; and a semicircular partitioning strip is arranged between the trapezoidal slot and the elongated slot. The alternating-current variable frequency motor has the advantages that: the rotor punching sheet of the alternating-current variable frequency motor can reduce the harmonic component of the variable frequency motor to improve the efficiency of the alternating-current variable frequency motor, reduce heat of the motor, increase the output torque of the motor and enhance a power factor of the motor.
Description
Technical field
The utility model relates to the rotor punching of a kind of motor, particularly a kind of alternating-current variable frequency motor.
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 industrial-mineral electric locomotive 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.
Its technical problem that solves the utility model adopts the ground technical scheme to be: a kind of alternating-current variable frequency motor, its 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.
1. dovetail grooves among the figure, 2. elongated slot, 3. divider.
Embodiment
Alternating-current variable frequency motor of the present utility model as shown in Figure 1, its rotor punching 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.
Alternating-current variable frequency motor rotor punching of the present utility model is compared with common AC motor rotor punching, on common flute profile architecture basics, increase the semi arch divider 3 of a slyness, make groove form the structure of a closure, the needs that conductor is written into had both been satisfied, reach simultaneously the function that suppresses harmonic wave again, the harmonic component of alternating-current variable frequency motor is significantly reduced, efficient obviously improves, the motor feels hot significantly reduces, and the output torque significantly promotes.
Claims (1)
1. alternating-current variable frequency motor, it comprises rotor punching, its 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, and 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 |
|---|---|---|---|
| CN2011201130112U CN202019247U (en) | 2011-04-18 | 2011-04-18 | Alternating-current variable frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201130112U CN202019247U (en) | 2011-04-18 | 2011-04-18 | Alternating-current variable frequency motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202019247U true CN202019247U (en) | 2011-10-26 |
Family
ID=44812914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201130112U Expired - Fee Related CN202019247U (en) | 2011-04-18 | 2011-04-18 | Alternating-current variable frequency motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202019247U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893824A (en) * | 2017-12-28 | 2018-04-10 | 桂林福达股份有限公司 | A kind of automobile clutch driven disc |
-
2011
- 2011-04-18 CN CN2011201130112U patent/CN202019247U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893824A (en) * | 2017-12-28 | 2018-04-10 | 桂林福达股份有限公司 | A kind of automobile clutch driven disc |
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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: 20111026 Termination date: 20150418 |
|
| EXPY | Termination of patent right or utility model |