CN102832027A - Single-phase electricity-saving autotransformer and control method - Google Patents
Single-phase electricity-saving autotransformer and control method Download PDFInfo
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- CN102832027A CN102832027A CN2012103031534A CN201210303153A CN102832027A CN 102832027 A CN102832027 A CN 102832027A CN 2012103031534 A CN2012103031534 A CN 2012103031534A CN 201210303153 A CN201210303153 A CN 201210303153A CN 102832027 A CN102832027 A CN 102832027A
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- current
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- autotransformer
- saving
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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
Abstract
The invention discloses a single-phase electricity-saving autotransformer and a control method. The transformer comprises two current coils and two auxiliary coils, one ends of the two current coils are respectively connected with a main current, the other ends of the two current coils are respectively connected with one ends of the corresponding auxiliary coils, and the other ends of the two auxiliary coils are respectively used as an output end and an input end. The method comprises the following steps of: firstly, leading the main current to generate voltage drop via one ends of the two current coils through the impedance of the current coils; and secondly, leading the current on the opposite phase side to generate a voltage by leading the voltage-drop main current to pass through magnetic bundles of the auxiliary coils, and connecting the other ends of the auxiliary coils to use energy source from the opposite phase side coils as output and input. The single-phase electricity-saving autotransformer per se does not generate harmonic waves and can effectively inhibit harmonic waves invaded from a power supply and loads. The harmonic waves come from many sources: for example, the starting and stopping of high-power rectification and commutation equipment and the like have the possibility of forming the harmonic waves.
Description
Technical field
The invention belongs to the energy-conservation technical field of electricity consumption, be specially a kind of autotransformer and control method of single-phase economize on electricity.
Background technology
Voltage rising iron loss increases, so electric equipment moves under the high voltage state, core loss and voltage square be directly proportional the useful life that the while has also been reduced electric equipment.For example: the every rising 5% of incandescent lamp voltage, the life-span reduces by 47%, the every rising 10% of mercury vapor lamp voltage, the life-span reduces by 15%.
Usually user's three-phase receiving voltage is in non-equilibrium state; Both made the load impedance balance; Also can cause three-phase current unbalance, under this power supply state, to a three-phase motor; Just must overcome the backward rotation moment that negative-sequence current is produced with the forward rotation moment that forward-order current was produced; Could guarantee the normal operation of motor, this moment, motor certainly will absorb more energy in order to overcome opposing torque to electric power system, had therefore increased and had used electric consumption.
Summary of the invention
The present invention seeks to provide a kind of autotransformer and control method of single-phase economize on electricity to the defective that prior art exists.
The present invention adopts following technical scheme for realizing above-mentioned purpose:
The autotransformer of the single-phase economize on electricity of the present invention; It is characterized in that comprising two current coils and two ancillary coils; One end of two current coils connects principal current respectively; The other end of two current coils connects with an end of corresponding ancillary coil respectively, and the other end of two ancillary coils is respectively as output and input.
The control method of the autotransformer of single-phase economize on electricity is following:
At first with the impedance generation pressure drop of principal current by the end process current coil of two current coils; Secondly the principal current that will pass through pressure drop guides the electric current of anti-phase side to produce voltage by the flux of ancillary coil, and the other end of the ancillary coil energy that comes from the anti-phase lateral coil each other that joins is done output and input.
The present invention itself does not produce harmonic wave, can effectively suppress simultaneously from the harmonic wave of power supply and load intrusion.The source of harmonic wave is a lot, all possibly form harmonic wave like start-stop of power rectifier, converter etc.
The present invention can improve the power factor of system, because the present invention has adopted special structural design, through absorbing reverse current, compensates virtual power, thereby reaches the purpose that improves the system power factor.Improve the system power factor, certainly will reduce the loss of electric energy in transmission course, this also is that the present invention can bring into play one of effect of power saving.
Description of drawings
Fig. 1: structural representation of the present invention.
Embodiment
As shown in Figure 1, (A) (B) is current coil, and (C) (D) is ancillary coil, and (A) (B) current coil place has R to reach T phase principal current mutually, and (B) impedance and the voltage of current coil make voltage produce some declines and electric current is sent to UV direction (voltage descends 1) by (A).(A) (B) join with ancillary coil, by (C) (D) the ancillary coil flux of order to C1&C2 guide the electric current of anti-phase side to produce voltage, C1&C2 joins, the energy that comes from the anti-phase lateral coil is each other done output and imports (abating the noise+voltage decline 2).
The loss of motor:
A. variable loss: be meant with load variations, comprise the loss of stator and rotor.
B. fixed loss: be meant with load irrelevantly, comprise that iron loss and machinery decrease.Iron loss is decreased by magnetic hysteresis and the eddy current damage is formed, and is directly proportional with voltage squared, and wherein magnetic hysteresis is decreased with frequency and is inversely proportional to.
C. other stray loss: generally including the loss of bearing, fan and rotor etc., is by the caused windage loss of rotation.
D. the high order harmonic component and the surge current that particularly exist in the electric power system increase sharply the copper loss of motor and iron loss, and abnormal heating makes the motor quick aging, even damages.Experiment showed, that harmonic wave and surge current make copper loss and the highest increment of iron loss reach 40%.
According to the work characteristics of above-mentioned motor, the present invention has following method:
A. through the special wiring method of main coil and ancillary coil, change the phase place of electric current and voltage, improve power factor (PF), reduce electric current, thereby reduce line loss.
B. by the electromagnetic action principle, suppress harmonic current and surge current in the power system, reduce copper loss and iron loss, reduce heating, the protection motor.
C. according to the relation curve (as shown in the figure) of voltage and copper loss, iron loss; Instinct provides an optimum operating voltage value to motor automatically; Like V0 among the figure, the motor of operation under this voltage can obtain minimum copper loss and iron loss summation; Thereby making the operating efficiency of motor the highest, promptly is best power saving situation.
Optimum voltage is 94% of rated voltage.
Average power saving rate: 8 – 12%.
Lighting apparatus loss characteristics:
The illuminating lamp that uses at present has: incandescent lamp, Halogen lamp LED, high-pressure sodium lamp, mercury vapor lamp and light-emitting diode etc.Various light fixtures all have the pluses and minuses and the scope of application separately, and luminous efficiency also has nothing in common with each other.The electric energy that light fixture consumed, a part are used for luminous lighting, for the needs of people's work and life; Another part slatterns with the form of heating.Experiment showed, that luminance and heat generation rate all change with the variation of magnitude of voltage.
Difference according to people's live and work content; The illumination degree is that so-called illumination (refers to the luminous flux that receives on the unit are; Unit is Lux) requirement also different, and have certain adjusting range, be 300 ~ 750Lux like the suitable illumination of plant produced line illumination; Reading environment needs 500 ~ 1000Lux; And the face of differentiating the people only needs 20Lux.
On the other hand, for the heating of light fixture, usually, all being harmful to, is that we manage and will reduce.The work characteristics that the present invention just is being based on above-mentioned lighting apparatus manufactures and designs.
The power saving principle of this joint invention illumination equipment:
A. according to the actual parameter of custom power system, to the operating voltage of the best of lighting apparatus setting, the illumination that makes lighting is under the situation of a little decline, and caloric value reduces significantly.
B. this battery saving arrangement suppresses harmonic wave and surge current in the illuminating power system also through the electromagnetic action principle, makes light steady, does not glimmer, and further reduces the heat generation rate of light fixture, and the protection lighting apparatus increases the service life, and improves the electricity-saving rate.
C. to perceptual lighting circuit, this battery saving arrangement can further improve power factor, reduces line loss, saves electric energy.
Optimum voltage is the 90%-95 of rated voltage; Lamp tube service life increases; Brightness slightly reduces; Average power saving rate: 17 – 25%.
Claims (2)
1. the autotransformer of a single-phase economize on electricity; It is characterized in that comprising two current coils and two ancillary coils; One end of two current coils connects principal current respectively; The other end of two current coils connects with an end of corresponding ancillary coil respectively, and the other end of two ancillary coils is respectively as output and input.
2. the control method of the autotransformer of single-phase economize on electricity according to claim 1 is characterized in that said method is following:
At first with the impedance generation pressure drop of principal current by the end process current coil of two current coils; Secondly the principal current that will pass through pressure drop guides the electric current of anti-phase side to produce voltage by the flux of ancillary coil, and the other end of the ancillary coil energy that comes from the anti-phase lateral coil each other that joins is done output and input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103031534A CN102832027A (en) | 2012-08-23 | 2012-08-23 | Single-phase electricity-saving autotransformer and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103031534A CN102832027A (en) | 2012-08-23 | 2012-08-23 | Single-phase electricity-saving autotransformer and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102832027A true CN102832027A (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2012103031534A Pending CN102832027A (en) | 2012-08-23 | 2012-08-23 | Single-phase electricity-saving autotransformer and control method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3600668A (en) * | 1970-01-20 | 1971-08-17 | Gen Electric | Time ratio solid state voltage regulator |
| US3732485A (en) * | 1971-12-29 | 1973-05-08 | Gen Electric | Electrical apparatus having inverse parallel connected pairs of thyristors |
| CN1175121A (en) * | 1996-08-28 | 1998-03-04 | 爱好电机株式会社 | Method fo automatically changing upper, balanced and lower voltage in electric power saving transformer and device of the same |
| CN202758726U (en) * | 2012-08-23 | 2013-02-27 | 南京埃尔乔亿自控设备有限公司 | Single-phase power saving auto-transformer |
-
2012
- 2012-08-23 CN CN2012103031534A patent/CN102832027A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3600668A (en) * | 1970-01-20 | 1971-08-17 | Gen Electric | Time ratio solid state voltage regulator |
| US3732485A (en) * | 1971-12-29 | 1973-05-08 | Gen Electric | Electrical apparatus having inverse parallel connected pairs of thyristors |
| CN1175121A (en) * | 1996-08-28 | 1998-03-04 | 爱好电机株式会社 | Method fo automatically changing upper, balanced and lower voltage in electric power saving transformer and device of the same |
| CN202758726U (en) * | 2012-08-23 | 2013-02-27 | 南京埃尔乔亿自控设备有限公司 | Single-phase power saving auto-transformer |
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Application publication date: 20121219 |