CN201054825Y - Power factor compensation LED energy-saving lighting lamp - Google Patents
Power factor compensation LED energy-saving lighting lamp Download PDFInfo
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- CN201054825Y CN201054825Y CNU2007200063449U CN200720006344U CN201054825Y CN 201054825 Y CN201054825 Y CN 201054825Y CN U2007200063449 U CNU2007200063449 U CN U2007200063449U CN 200720006344 U CN200720006344 U CN 200720006344U CN 201054825 Y CN201054825 Y CN 201054825Y
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Abstract
The utility model belongs to the electric light field, in particular to an energy-saving LED illuminating lamp suitable for the power factor compensation of an AC power grid. The utility model aims at upgrading the power factor of the AC power grid while reducing the harmonic current pollution of the AC power grid, and using the power gained by the power factor compensation to drive the energy-saving LED illuminating lamp, to save energy and reduce consumption and decrease the harmonic current pollution of the AC power grid. In order to achieve the objective, the utility model provides the technical proposal that the energy-saving LED illuminating lamp is lighted up by the voltage reducing and the current limiting of a capacitor in AC commercial power, and the utility model is of capacitance in the AC power grid and plays the role of the power factor compensation. The utility model perfectly solves the problem that LED is broken down by transient voltage when the LED is lighted up by the method of reducing the voltage of the capacitor and limiting the current of the capacitor.
Description
Technical field
The utility model belongs to the electric light source field, particularly relate to a kind of LED energy-saving lighting lamp that is applicable to the AC network power factor compensation, its objective is the power factor that when the harmonic current that reduces AC network pollutes, promotes AC network, and will be used for the driving LED energy-saving lighting lamp by the power that power factor compensation gets.The utility model is the traditional incandescent lamp and the ideal replacement product of inflation light source.
Background technology
Global energy faces a crisis.For effective use of energy sources, International Electrotechnical Commission (I.E.C) has formulated a series of standard at the power supply supply of electrical equipment, IEC-1000 is exactly the standard of doing for harmonic current in the power supply supply, and the power factor compensation method is one of effective method of utilization at present, and the reactive power compensating apparatus that power consumer is commonly used is a capacitor.So-called power factor is the ratio of useful work and gross power, and promptly useful work occupies the ratio of diligent and idle work vector sum.User power utilization power factor height can influence the power supply cost, and at present perceptual electrical equipment such as household electrical appliance such as electric fan, refrigerator, air-conditioning, washing machine, fluorescent lamp and have Switching Power Supply or the power factor of the household electrical appliances of current rectifying and wave filtering circuit such as television set, computer, electromagnetic oven, sound equipment, electricity-saving lamp or the like all very low, if the user can adopt the method that capacitor is set to improve power factor, can reduce power supply cost, energy savings, reduce the pollution of harmonic current, but most users there is no this idea.Present many countries and regions have all proposed requirement to the power factor of user power utilization, and as the 69th regulation of electric industry method in China Taiwan Province: the average power factor of user's electricity consumption in every month was not as good as 80% o'clock, and whenever low by 1%, this month electricity charge should increase by 3/1000ths; Surpass at 80% o'clock, whenever surpass 1%, this month electricity charge should reduce 1.5/1000ths.It is most countries trend from now on that the power factor of user power utilization is claimed.LED is as semiconductor solid " cold " light source, has characteristics such as energy-efficient, long-life, low maintenance expense, pollution-free, multicolour, is that the traditional incandescent lamp and the ideal of inflation light source replace product; The utility model is with a kind of LED energy-saving lighting lamp that is applicable to the AC network power factor compensation: be the LED energy-saving lighting lamp, be again power-factor compensator simultaneously, help the conscious custom of forming energy savings of user, to promote the power factor of AC network, all very useful to family to state.
The utility model content
The purpose of this utility model is to provide a kind of LED energy-saving lighting lamp that is applicable to the AC network power factor compensation.For achieving the above object, technical solution of the present utility model is: electric main is lighted the LED energy-saving lighting lamp with the capacitance decompression current limliting, and the utility model is capacitive in electrical network, has played the effect of power factor compensation.The utility model has ideally solved employing capacitance decompression current limliting method when lighting LED, and transient voltage punctures the problem of LED.Its solution schematic diagram is seen Fig. 1, Fig. 2 and Fig. 3.
Fig. 1 is dc pulse current drives method scheme one schematic diagram of the present utility model.In Fig. 1, capacitor C 1 is used for the step-down current limliting, and D1D2D3D4 is used for rectification, but because of AC power can not be just inserts when the zero crossing, and if the voltage after the rectification is direct supply LED, and then the energy of the transient voltage that is produced is enough to break immediately LED.The C1 dividing potential drop that innovation of the present utility model is to use C2 and be used for the step-down current limliting is to reduce the transient voltage that will be sent to LED; use transient voltage to suppress diode DZ1 simultaneously to absorb the transient voltage under unusual or the extreme case; introducing the constant-current source Io that shields again can be operated under the constant current state LED with the method that limits maximum current to isolate remaining transient voltage, to work on the three areas simultaneously reliably.C1 plays main power factor compensation effect again, and the collaborative C1 of C2 has played auxiliaring effect to harmful pulse of power factor compensation and absorption electrical network, and C1C2 is consumed power not, and the utility model is capacitive in electrical network; Notice that DZ1 also can absorb transient voltage if cancellation C2 the utility model still can operate as normal, but whole structure can be weaker, uses C2 to make the utility model more perfect.What need here to propose is, if use electrochemical capacitor to carry out filtering power factor compensation is harmful to after the rectification, because the existence of electrolysis can make the phase place of charging current lag behind voltage, in order more effectively to carry out power factor compensation, the utility model does not use electrolysis filtering, and is to use the pulsating current driving LED.
Fig. 2 is dc pulse current drives method scheme two schematic diagrames of the present utility model, and difference is: the constant-current source among Fig. 1 is connected on the anode of LED, and constant current tube will be selected the positive-negative-positive triode for use; Constant-current source among Fig. 2 is connected on the negative terminal of LED, and constant current tube will be selected NPN type triode for use.For the triode of high back-pressure, the available model of NPN type is more.
Fig. 3 is that interchange pulsating current of the present utility model drives the method schematic diagram, its essence is that the positive-negative half-cycle with alternating current drives two groups of LED respectively.The function of C1C2 is identical with Fig. 1, and DZ1DZ2 absorbs unusual transient voltage, and DZ1DZ2 also can use a bidirectional transient voltage instead and suppress diode; D1D2 is used for halfwave rectifier, two constant-current source Io
1And Io
2Limit maximum reversal respectively to isolate positive and negative transient voltage, because transient voltage is higher, D1D2 also plays the effect of isolation reverse voltage, so can not economize.
The difference of Fig. 1 Fig. 2 and Fig. 3 is: the bridge full-wave rectifier among Fig. 1 Fig. 2 has the pressure drop of two PN junctions, and the halfwave rectifier among Fig. 3 has only the pressure drop of a PN junction, but the pulsating current frequency height of driving LED among Fig. 1, Fig. 2, peak current is little, and both respectively have characteristics.Pulsating current frequency high energy makes the LED operating state better, and the difference of complex chart 1, Fig. 2 again is so the utility model more recommends to adopt the solution of Fig. 2.
The optimal drive mode of LED is a constant-current driving, and the C1 that is serially connected in the AC power has just played good constant current effect, and the computing formula of its capacity is: I
F=K (V
AC-NV
F) ω C1---(formula 1), wherein I
FBe the average current that flows through LED, K is owing to a coefficient that uses C2 to produce, according to the ratio K of the number difference of inserts LED and C1 and C2 about about 0.7-0.9, as if not having then K=1 of C2, V
ACBe the alternating voltage effective value, N is the number of the LED that inserts, V
FBe the forward voltage pressure drop of LED, ω is the angular frequency of AC power; According to the average driving current of employed LED, from then on formula can calculate the capacity of C1.And and the constant-current source of LED serial connection be used to limit the peak current that flows through LED, isolate transient voltage, the value of Io should be than the peak-peak I of the electric current of driving LED
EPBig, computing formula is Io (A)=0.6 (V)/R1 (Ω)---(formula 2).Concrete CALCULATION OF PARAMETERS example is referring to embodiment of the present utility model.
The circuit theory diagrams of the utility model embodiment are seen Fig. 4, Fig. 5 and Fig. 6.
Along with improving constantly of LED technology, the LED illuminating lamp has good development prospect.Almost certainly, in a few years, the LED illuminating lamp just can ripely be screwed into most of lamp sockets to replacing old-fashioned illuminating lamp, and the best approach of seeking a kind of driving LED illuminating lamp is the task of top priority.LED itself is just very energy-conservation, and the utility model does not use transformer, switching tube etc. to understand the components and parts of consumed power or heating, so higher compared with the method efficient of other driving LED; And the power that is used for driving LED gets by power factor compensation, the inductive load that can be regarded as in electric capacity and the electrical network is intercoursed energy, both promoted power factor, again the portion of energy of being saved is used for driving LED, its essence is reactive power is changed into active power that this is real energy-saving lighting lamp! The operating current that the inventor uses alternating current ammeter to record certain electric fan is 230mA, incorporate 5 LED energy-saving lighting lamps that adopt the utility model Fig. 2 scheme then into, the alternating current list index has trembled that to get back to the origin-location again motionless, measured numerical value does not increase, and really is an energy-conservation good method with power factor penalty method driving LED.More substantial energy-conservation data remain widely the actual detected checking, and its result must be very inspirer.The utility model be if can promote early, and its economic benefit, social benefit are limitless.
The beneficial effects of the utility model are: a kind of LED energy-saving lighting lamp that is applicable to the AC network power factor compensation is provided, and it is the LED energy-saving lighting lamp, is again power-factor compensator simultaneously.As the LED energy-saving lighting lamp, its power consumptive province, brightness height, long service life, as power-factor compensator, it can improve power factor, minimizing power loss, absorb harmful pulse of electrical network, has electricity-saving function, and reactive power is changed into active power.The utility model cost is not high, if be generalized to every household, can improve the harmonic current of AC network, promotes the power factor of AC network, and energy savings is all very useful to family to state.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 the utility model dc pulse current drives method scheme one schematic diagram;
Fig. 2 the utility model dc pulse current drives method scheme two schematic diagrames;
Fig. 3 the utility model exchanges pulsating current and drives the method schematic diagram;
Fig. 4 the utility model dc pulse current drives method scheme one embodiment circuit theory diagrams;
Fig. 5 the utility model dc pulse current drives method scheme two embodiment circuit theory diagrams;
Fig. 6 the utility model exchanges pulsating current and drives method embodiment circuit theory diagrams.
Embodiment
1, sees Fig. 4 the utility model dc pulse current drives method scheme one embodiment circuit theory diagrams.When C1 is 0.56uF/630V, V
ACDuring=AC220V, C2 gets 0.82uF/250V, and N gets 10, and K is about 0.9, substitution (formula 1) can be regarded as I
F=30mA, optional average operating current are the LED of 30mA.
The constant-current source Io that shields defines the peak inrush current that flows through LED, is taken as 50mA here, substitution (formula 2) can be regarded as R3=12 Ω because the constant current tube base stage has voltage stabilizing, also little even this electric current fluctuates when transient voltage is arranged.C1: C2 is about 2: 3, after the rectification the peak-peak voltage that may be added on the constant-current source be 2/5ths about 120V of 220V alternating voltage peak, DZ1 selects P6KE150A (150V/5W, transient peak power 600W/1ms) for use, get the withstand voltage 160V of being of constant current tube Q1, do not select 2N5401 for use because of electric current very much and get final product, its transient response of constant-current source that discrete component constitutes is fine.Constant current tube pressure drop when operate as normal is very little, and the duration of transient voltage is very short, and its power consumption is also little.
When the N increase, the K value can reduce to some extent, can suitably increase C1 or reduce C2, and the reverse breakdown voltage of DZ1 and Q1 also will increase thereupon to some extent when N is big; Also can divide into groups to use two or more the utility model to drive when N is big, grouping is equivalent to make N to reduce, and is favourable to power factor compensation.
2, see Fig. 5 the utility model dc pulse current drives method scheme two embodiment circuit theory diagrams.Constant current tube Q1 selects 2N5551 for use, and all the other are identical with Fig. 4.If select more high-power LED for use, must increase driving power, the NPN type high countervoltage triode that the optional usefulness of Q1 is more powerful, this type of triode kind is more, and has been widely used in the electricity-saving lamp.
3, see that Fig. 6 the utility model exchanges pulsating current and drives method embodiment circuit theory diagrams.Owing to be halfwave rectifier, the mean value of electric current is half of full-wave rectification, gets 1uF/630V so C1 will be twice, C2 gets 1.5uF/250V, DZ1DZ2 selects P6KE150A for use, and the average current that actual flow is crossed LED still is about 30mA, and selecting average operating current is the LED of 30mA.Constant-current source Io
1And Io
2Define the peak inrush current that flows through LED, be taken as 90mA here, R 3=R5=6.8 Ω; Constant current tube is selected the slightly larger high back-pressure complementary pair pipe of 2N5401 and 2N5551 or power for use.Because LED can be operated under the state of narrow pulse high-current, the LED as long as the energy of transient voltage can not broken, then LED can the work of long-term safety ground.
Claims (6)
1. power factor compensation type LED energy-saving lighting lamp is characterized in that: it mainly suppresses diode (DZ1), constant-current source (Io), light-emitting diode (LED 1) to (LED n) by electric capacity (C1), (C2), rectifier diode (D1), (D2), (D3), (D4), transient voltage and forms; One utmost point series connection back of one utmost point of electric capacity (C1) and electric capacity (C2) is connected with the negative pole of (D1) and positive pole (D2), another utmost point of electric capacity (C2) and the negative pole of (D3) and positive pole (D4) are connected and form circuit input end (ACin) with another utmost point of electric capacity (C1), (D2), (D4) negative pole serial connection back is connected with the negative pole that transient voltage suppresses diode (DZ1), (D1), (D3) positive pole serial connection back is connected with the positive pole of voltage-stabiliser tube (DZ1), the input of constant-current source is connected with the negative pole that transient voltage suppresses diode (DZ1), the positive pole of the output termination of constant-current source (LED 1), the negative pole of (LED 1) is connected in series the positive pole of next LED, be connected in series by that analogy to the positive pole of (LED n), negative pole (LEDn) is connected with the anodal utmost point that transient voltage suppresses diode (DZ1); Electric main through electric capacity (C1), (C2) dividing potential drop, obtains suitable low alternating voltage from the two ends input of circuit input end (ACin); By the rectifier bridge rectification that rectifier diode (D1), (D2), (D3), (D4) are formed, realized friendship galvanic conversion, behind constant-current source restriction maximum current, forming pulsating current, to drive (LED 1) luminous to (LED n).
2. power factor compensation type LED energy-saving lighting lamp according to claim 1 is characterized in that:
It comprises that also a transient state voltage suppresses diode (DZ1); Transient voltage suppresses diode (DZ1) in order to absorb the transient voltage under unusual or the extreme case.
3. power factor compensation type LED energy-saving lighting lamp according to claim 1 is characterized in that: introduce the constant-current source (Io) shield with the method for restriction maximum current to isolate remaining transient voltage.
4. power factor compensation type LED energy-saving lighting lamp according to claim 1 is characterized in that:
When constant-current source (Io) is connected on the positive pole of (LED), constant current tube will be selected the positive-negative-positive triode for use.
5. power factor compensation type LED energy-saving lighting lamp according to claim 1 is characterized in that:
Constant-current source (Io) also can be connected on the negative pole of (LED), and constant current tube will be selected NPN type triode for use when being connected on the negative pole of (LED).
6. power factor compensation type LED energy-saving lighting lamp according to claim 1 is characterized in that:
The utility model adopts pulsating current to drive method, and pulsating current can be selected to use direct current or exchange pulsating current and drive method driving LED energy-saving lighting lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200063449U CN201054825Y (en) | 2007-02-12 | 2007-02-12 | Power factor compensation LED energy-saving lighting lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200063449U CN201054825Y (en) | 2007-02-12 | 2007-02-12 | Power factor compensation LED energy-saving lighting lamp |
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| CN201054825Y true CN201054825Y (en) | 2008-04-30 |
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|---|---|---|---|
| CNU2007200063449U Expired - Fee Related CN201054825Y (en) | 2007-02-12 | 2007-02-12 | Power factor compensation LED energy-saving lighting lamp |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009153696A1 (en) * | 2008-06-17 | 2009-12-23 | Philips Intellectual Property & Standards Gmbh | Harmonic compensation circuit and method for an led light unit |
| WO2012028088A1 (en) * | 2010-09-03 | 2012-03-08 | 贵州光浦森光电有限公司 | Method and apparatus for led lighting |
| CN102938958A (en) * | 2012-11-20 | 2013-02-20 | 宁波市镇海华泰电器厂 | Surge voltage resistant pulse-type driving power supply for LED lamp |
| CN102938959A (en) * | 2012-11-20 | 2013-02-20 | 宁波市镇海华泰电器厂 | Surge voltage resistant pulse-type driving power supply for LED lamp |
| CN102938957A (en) * | 2012-11-20 | 2013-02-20 | 宁波市镇海华泰电器厂 | Surge voltage resistant pulse-type driving power supply for LED lamp |
-
2007
- 2007-02-12 CN CNU2007200063449U patent/CN201054825Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009153696A1 (en) * | 2008-06-17 | 2009-12-23 | Philips Intellectual Property & Standards Gmbh | Harmonic compensation circuit and method for an led light unit |
| CN102067405A (en) * | 2008-06-17 | 2011-05-18 | 皇家飞利浦电子股份有限公司 | Harmonic compensation circuit and method for an LED light unit |
| CN102067405B (en) * | 2008-06-17 | 2013-11-20 | 皇家飞利浦电子股份有限公司 | Harmonic compensation circuit and method for an LED light unit |
| US9088172B2 (en) | 2008-06-17 | 2015-07-21 | Koninklijke Philips N.V. | Harmonic compensation circuit and method for an LED light unit |
| WO2012028088A1 (en) * | 2010-09-03 | 2012-03-08 | 贵州光浦森光电有限公司 | Method and apparatus for led lighting |
| US20140049170A1 (en) * | 2010-09-03 | 2014-02-20 | Guizhou Guangpusen Photoelectric Co., Ltd | Method and Apparatus for LED Lighting |
| US9107254B2 (en) * | 2010-09-03 | 2015-08-11 | Guizhou Guangpusen Photoelectric Co., Ltd. | Method and apparatus for LED lighting |
| CN102938958A (en) * | 2012-11-20 | 2013-02-20 | 宁波市镇海华泰电器厂 | Surge voltage resistant pulse-type driving power supply for LED lamp |
| CN102938959A (en) * | 2012-11-20 | 2013-02-20 | 宁波市镇海华泰电器厂 | Surge voltage resistant pulse-type driving power supply for LED lamp |
| CN102938957A (en) * | 2012-11-20 | 2013-02-20 | 宁波市镇海华泰电器厂 | Surge voltage resistant pulse-type driving power supply for LED lamp |
| CN102938957B (en) * | 2012-11-20 | 2014-11-26 | 宁波市镇海华泰电器厂 | Surge voltage resistant pulse-type driving power supply for LED lamp |
| CN102938959B (en) * | 2012-11-20 | 2014-12-24 | 宁波市镇海华泰电器厂 | Surge voltage resistant pulse-type driving power supply for LED lamp |
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| 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: 20080430 |