CN101931276A - LC (Inductor-Capacitor) resonance energy-saving electromotor - Google Patents
LC (Inductor-Capacitor) resonance energy-saving electromotor Download PDFInfo
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- CN101931276A CN101931276A CN 201010245718 CN201010245718A CN101931276A CN 101931276 A CN101931276 A CN 101931276A CN 201010245718 CN201010245718 CN 201010245718 CN 201010245718 A CN201010245718 A CN 201010245718A CN 101931276 A CN101931276 A CN 101931276A
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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
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Abstract
The invention provides an LC (Inductor-Capacitor) resonance energy-saving electromotor, wherein two ends of three phases of primary coil windings L1, L2 and L3 are respectively connected in parallel with an LC resonance branch (L1delta, C1), (L2delta, C2), (L3delta, C3) which is formed by connecting a secondary coil winding and a capacitor in series. The LC resonance energy-saving electromotor has the advantages that when a capacitive load releases energy in the same circuit, an inductive load can absorb the energy, when the inductive load releases energy, and the capacitive load can absorb energy. Reactive power exerted by the inductive load to a power supply is complemented by the capacitive load, thereby achieving the purpose of improving the power coefficient. Because the secondary coil winding is connected in series in the circuit, a resonance current is utilized, the current of the primary coil winding is reduced, thereby the active input is reduced, and the active power consumption is reduced as the secondary coil winding does part of work, thereby achieving the purpose of saving electric power.
Description
Technical field
The present invention relates to a kind of motor, particularly a kind of three-phase energy-saving motor.
Background technology
In order to improve motor performance, cut down the consumption of energy, once there are many people to take many technical measures, as " Y " shape " △ " connection according to machine operation automatic switchover motor windings under weight different loads state; Improve motor manufacturing technology, in the motor wire casing, pour into high permeability material, reduce dispersion loss; For avoiding motor under Light Condition, to move power consumption, install unloaded limiter or the like additional to motor, can receive certain effect to motor power saving, but also have many problems simultaneously, as install complexity, cost and failure rate height, reliability and useful life are lower, and some battery saving arrangements also make the technical performance of motor be restricted, to the surge increased frequency of motor, regulate discontinuous, big etc. to Disturbance in Power Net.
Summary of the invention
The objective of the invention is to solve power consumption height, the baroque defective that existing motor exists, a kind of simple in structure, the tangible LC resonance of power savings energy-saving motor is provided.
To achieve these goals, the invention provides following technical scheme:
A kind of LC resonance energy-saving motor, comprise casing and stator core, be provided with three-phase main coil winding in the stator slot in the stator core, it is characterized in that: be respectively equipped with the LC resonance branch road of forming by secondary coil winding and capacitors in series in the corresponding stator slot with the parallel connection of every winding of main coil mutually.
On the basis of above-mentioned basic technical scheme, following further technical scheme can be arranged: described capacitor is arranged in the terminal box of motor field frame.
Technical scheme of the present invention can be used for threephase motor, also can be used for single-phase motor or coil wound rotor motor.
The invention has the advantages that: the main coil winding of motor is no matter be △ type connection or wye connection, the LC resonance branch road that can be made up of secondary coil windings in series capacitor in the two ends parallel connection of every phase main coil winding.So just produce resonance current.When capacitive load released energy, inductive load absorbed energy in this same circuit, and when inductive load released energy, capacitive load absorbed energy.The reactive power that inductive load is done power supply is given by capacitive load and is replenished, and has so just reached the purpose that improves power factor.Because the secondary coil winding is serially connected in the circuit, this resonance current has obtained utilization, has reduced the electric current of main coil winding, thereby has reduced meritorious input.
Description of drawings:
Fig. 1 is the schematic cross-sectional view of LC resonance energy-saving motor provided by the invention;
Fig. 2 is the A portion enlarged drawing of Fig. 1;
Fig. 3 is an electrical schematic diagram of the present invention.
Specific embodiment
As shown in Figure 1 and Figure 2, a kind of LC resonance energy-saving motor provided by the invention comprises casing 6 and stator core 1, is provided with three-phase main coil winding L in the stator slot 2 in the stator core 1
1, L
2, L
3(for the purpose of drawing is clear, the main coil winding L of only having drawn among Fig. 1
1In a schematic cross-sectional view), be respectively equipped with the LC resonance branch road of forming by secondary coil winding and capacitors in series in the corresponding stator slot with the parallel connection of every winding of main coil mutually.With the main coil winding L
1Be example, stator slot 2 bottoms are provided with the main coil winding L
1, top is provided with the secondary coil winding L
1△ is provided with insulating barrier 4 between them, the secondary coil winding L
1The △ upper end is provided with the groove short wooden stake 5 of sealing.Described capacitor C
1, C
2, C
3Be arranged in the terminal box 3 of motor field frame 6.
As shown in Figure 3, three-phase main coil winding winding L
1, L
2, L
3Be △ type connection, A, B, C point are the coil tap of three-phase.Every phase main coil winding L
1, L
2, L
3The respectively corresponding LC resonance branch road in parallel in two ends: (L
1△, C
1), (L
2△, C
2), (L
3△ C
3).
The concrete implementation result of LC resonance energy-saving electric machine:
Adopt technical scheme of the present invention, to Y132M-4, the transformation of the way of 7.5kw threephase asynchronous stator coil, the front and back measured result is as follows:
One, no-load test:
1, common Y132M-4,7.5kw threephase asynchronous cos α=0.75;
LC resonance energy-saving electric machine 4 utmost point 7.5kw:cos α=0.95;
Power factor raising rate cos α=(0.95-0.75)/0.95*100%=20%.
2, input apparent power:
Common Y132M-4, the average phase current 6.7A of 7.5kw threephase asynchronous;
LC resonance energy-saving electric machine 4 utmost point 7.5kw, average phase current 3.3A;
Y132M-4,7.5kw threephase asynchronous machine apparent power
PS apparent power decline percentage PS △=(4.5-2.2)/4.5*100%=51%.
3, common Y132M-4, the input of 7.5kw motor has power P=PS * con α=4.5 * 0.75=3.4kw;
The energy-conservation 4 utmost point 7.5kw motor P=PS * cos α=2.2 * 0.95=2.1kw of LC resonance;
Active power decline percentage: P △=(3.4-2.1)/3.4*100%=38%.
Two, full load actual measurement (three-phase average voltage 385V)
1, power factor
Y132M-4,7.5kw motor cos α=0.87
LC resonance energy-saving electric machine: 4 utmost point 7.5kw, cos α=0.97
Power factor cos α rate of descent=(0.97-0.87)/0.97*100%=10%.
2, input apparent power:
Y132M-4, the average phase current 11.0A of 7.5kw,
The average phase current 8.4A of LC resonance energy-saving electric machine 4 utmost point 7.5kw,
Y132M-4,7.5kw motor apparent power
LC resonance energy-saving motor 4 utmost point 7.5kw are than Y132M-4,7.5kw apparent power decline percentage.
Apparent power decline percentage PS=(7.3-5.6)/7.3*100%=23%.
3, input active power P:
Y132M-4, the input of 7.5kw motor has power P=PS * cos α=7.3 * 0.87-6.35kw,
LC resonance energy-saving electric machine 4 utmost point 7.5kw input active power P=PS * cos α=5.6 * 0.97=5.4kw,
Power decline percentage (6.35-5.4)/6.35*100%=15% is arranged.
Claims (2)
1.LC resonance energy-saving motor, comprise casing (6) and stator core (1), be provided with three-phase main coil winding in the stator slot of stator core (2), it is characterized in that: be respectively equipped with the LC resonance branch road of forming by secondary coil winding and capacitors in series in the corresponding stator slot with the parallel connection of every winding of main coil mutually.
2. LC resonance energy-saving motor according to claim 1 is characterized in that: described capacitor is arranged in the terminal box (3) of motor field frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010245718 CN101931276A (en) | 2010-07-30 | 2010-07-30 | LC (Inductor-Capacitor) resonance energy-saving electromotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010245718 CN101931276A (en) | 2010-07-30 | 2010-07-30 | LC (Inductor-Capacitor) resonance energy-saving electromotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101931276A true CN101931276A (en) | 2010-12-29 |
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ID=43370280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010245718 Pending CN101931276A (en) | 2010-07-30 | 2010-07-30 | LC (Inductor-Capacitor) resonance energy-saving electromotor |
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| CN (1) | CN101931276A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720889A (en) * | 2016-03-29 | 2016-06-29 | 国网上海市电力公司 | Filtering and energy-saving apparatus for LC resonant type composite magnetic core asynchronous motor |
| JP2021090255A (en) * | 2019-12-03 | 2021-06-10 | ファナック株式会社 | Electric motor and method for manufacturing the same |
| CN113964991A (en) * | 2021-11-15 | 2022-01-21 | 郑州轻工业大学 | Motor stator structure of surrounding type secondary winding and fault-tolerant operation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2105135U (en) * | 1991-11-23 | 1992-05-20 | 杨应龙 | High efficiency large power-factor 3-phase asynchronous motor |
| CN1192602A (en) * | 1997-03-05 | 1998-09-09 | 张喜信 | Winding for pulsation loading and energy saving asynchronous motor |
| CN1556577A (en) * | 2004-01-07 | 2004-12-22 | 杨芳春 | High actuating torque low operating power three phase capacitane type bisquirrel motor |
| CN201781339U (en) * | 2010-07-30 | 2011-03-30 | 蚌埠市维光塑胶制品有限公司 | Liquid crystal (LC) resonance energy-saving motor |
-
2010
- 2010-07-30 CN CN 201010245718 patent/CN101931276A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2105135U (en) * | 1991-11-23 | 1992-05-20 | 杨应龙 | High efficiency large power-factor 3-phase asynchronous motor |
| CN1192602A (en) * | 1997-03-05 | 1998-09-09 | 张喜信 | Winding for pulsation loading and energy saving asynchronous motor |
| CN1556577A (en) * | 2004-01-07 | 2004-12-22 | 杨芳春 | High actuating torque low operating power three phase capacitane type bisquirrel motor |
| CN201781339U (en) * | 2010-07-30 | 2011-03-30 | 蚌埠市维光塑胶制品有限公司 | Liquid crystal (LC) resonance energy-saving motor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720889A (en) * | 2016-03-29 | 2016-06-29 | 国网上海市电力公司 | Filtering and energy-saving apparatus for LC resonant type composite magnetic core asynchronous motor |
| CN105720889B (en) * | 2016-03-29 | 2018-12-28 | 国网上海市电力公司 | A kind of LC resonance formula composite cores asynchronous machine filtering energy-saving device |
| JP2021090255A (en) * | 2019-12-03 | 2021-06-10 | ファナック株式会社 | Electric motor and method for manufacturing the same |
| JP7372128B2 (en) | 2019-12-03 | 2023-10-31 | ファナック株式会社 | Electric motor and electric motor manufacturing method |
| CN113964991A (en) * | 2021-11-15 | 2022-01-21 | 郑州轻工业大学 | Motor stator structure of surrounding type secondary winding and fault-tolerant operation |
| CN113964991B (en) * | 2021-11-15 | 2022-09-13 | 郑州轻工业大学 | Motor stator structure of surrounding type secondary winding and fault-tolerant operation |
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Application publication date: 20101229 |