CN201025673Y - Three-phase AC electromotor power saver - Google Patents
Three-phase AC electromotor power saver Download PDFInfo
- Publication number
- CN201025673Y CN201025673Y CNU2006201680554U CN200620168055U CN201025673Y CN 201025673 Y CN201025673 Y CN 201025673Y CN U2006201680554 U CNU2006201680554 U CN U2006201680554U CN 200620168055 U CN200620168055 U CN 200620168055U CN 201025673 Y CN201025673 Y CN 201025673Y
- Authority
- CN
- China
- Prior art keywords
- inductance
- phase
- parallel
- series
- power
- 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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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Control Of Ac Motors In General (AREA)
Abstract
The utility model discloses an three-phase ac motor electricity economizer whose three phases of power are respectively connected with three sets of output circuits. After being connected in series, an inductance L4 and an inductance L5 are connected with an inductance L1 in parallel to the phase A of the three-phase power; after being connected in series, an inductance L6 and an inductance L7 are connected with an inductance L2 in parallel to the phase B thereof; after being connected in series, an inductance L8 and an inductance L9 are connected with an inductance L3 to the phase C thereof. Due to the technical design, the capacitor can be protected without being broken down; the compensation effect is superior, higher than the compensation index of power factor in prior techniques and the higher harmonic produced by the motor can be effectively inhibited in order to reduce the interference with the power network. The utility model has the advantages of simple structure, reliable work and obvious power saving effect, etc.
Description
Technical field: the utility model relates to a kind of control circuit, especially relates to a kind of electric saver of three-phase ac motor that is used for the threephase asynchronous machine economize on electricity.
Background technology: the electricity-saving appliance that is used at present on the threephase motor is generally: a kind of is " Y " type " Δ " connection according to machine operation automatic switchover motor winding under different load conditions, also having a kind of is the capacitance compensation method, but, the easy overvoltage of the electric capacity of this electricity-saving appliance, and the difference of electric capacity is big, acting frequently of switch, and burn out easily.
Summary of the invention:
The purpose of this utility model provides a kind of simple in structure, reliable operation, the tangible electric saver of three-phase ac motor of power savings; The purpose of this utility model is achieved through the following technical solutions:
A kind of electric saver of three-phase ac motor, be connected to three groups of output loops on its three phase mains respectively, go up mutually with the A that inductance L 1 is parallel-connected to three phase mains inductance L 4, L5 series connection back, go up mutually with the B that inductance L 2 is parallel-connected to three phase mains inductance L 6, L7 series connection back, and go up mutually with the C that inductance L 3 is parallel-connected to three phase mains inductance L 8, L9 series connection back.
Described output loop is: air switch is with after the normally opened contact of relay is connected, again the capacitances in series that is connected with " Δ ".
The utility model has the advantages that: owing to adopt above-mentioned technical scheme; can realize protecting electric capacity not breakdown, compensation effect is splendid, is higher than the compensation index of power factor in the prior art; can also effectively suppress the high order harmonic component that motor produces, reduce interference electrical network.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Embodiment: with reference to Fig. 1, be connected to three groups of output loops 2 on the three phase mains 1 respectively, every group of output loop can have several, the structure of this output loop 2 is: air switch 3 is with after the normally opened contact 4 of relay is connected, electric capacity 5 series connection that are connected with " Δ " again, inductance L 4, go up mutually with the A that inductance L 1 is parallel-connected to three phase mains L5 series connection back, inductance L 6, go up mutually with the B that inductance L 2 is parallel-connected to three phase mains L7 series connection back, inductance L 8, go up mutually with the C that inductance L 3 is parallel-connected to three phase mains L9 series connection back, and inductance can play decoupling, filtering, alleviate the effect of electric current.
Claims (2)
1. electric saver of three-phase ac motor, it is characterized in that: be connected to three groups of output loops on the three phase mains respectively, go up mutually with the A that inductance L 1 is parallel-connected to three phase mains inductance L 4, L5 series connection back, go up mutually with the B that inductance L 2 is parallel-connected to three phase mains inductance L 6, L7 series connection back, and go up mutually with the C that inductance L 3 is parallel-connected to three phase mains inductance L 8, L9 series connection back.
2. a kind of electric saver of three-phase ac motor according to claim 1 is characterized in that: described output loop is: air switch is with after the normally opened contact of relay is connected, again the capacitances in series that is connected with " △ ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201680554U CN201025673Y (en) | 2006-12-13 | 2006-12-13 | Three-phase AC electromotor power saver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201680554U CN201025673Y (en) | 2006-12-13 | 2006-12-13 | Three-phase AC electromotor power saver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201025673Y true CN201025673Y (en) | 2008-02-20 |
Family
ID=39099530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201680554U Expired - Fee Related CN201025673Y (en) | 2006-12-13 | 2006-12-13 | Three-phase AC electromotor power saver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201025673Y (en) |
-
2006
- 2006-12-13 CN CNU2006201680554U patent/CN201025673Y/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: 20080220 Termination date: 20131213 |