CN203313504U - High-power-factor electronic ballast of energy-saving lamp - Google Patents
High-power-factor electronic ballast of energy-saving lamp Download PDFInfo
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- CN203313504U CN203313504U CN2013203672868U CN201320367286U CN203313504U CN 203313504 U CN203313504 U CN 203313504U CN 2013203672868 U CN2013203672868 U CN 2013203672868U CN 201320367286 U CN201320367286 U CN 201320367286U CN 203313504 U CN203313504 U CN 203313504U
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
Provided is a high-power-factor electronic ballast of an energy-saving lamp. The high-power-factor electronic ballast comprises an EMI filter circuit, a bridge rectification circuit, a power factor correction circuit, an inversion and self-startup circuit and a lamp load output circuit. The bridge rectification circuit, the power factor correction circuit, and the inversion and self-startup circuit are connected between the EMI filter circuit and the lamp load output circuit in sequence. The high-power-factor electronic ballast of the energy-saving lamp is reasonable in design idea and structure; the power factor of the power factor correction circuit is no less than 0.98; current harmonics are reduced to less than 18%; current crest ratio of a lamp tube is lower than 1.8; and by means of reasonable debugging, the indexes can meet or exceed national standards, so that the high-power-factor electronic ballast of the energy-saving lamp has the advantages of no stroboflash, no pollution to the power grid, low cost and high reliability.
Description
Technical field
The utility model relates to ballast, is specially a kind of high-power factor energy-saving lamp electric ballast.
Background technology
Current electric ballast generally all comprises filter circuit, rectification circuit, start-up circuit and load circuit, start-up circuit can produce the load of LC resonance point bright light pipe, but the power factor of such electric ballast is generally all lower, has certainly caused harmonic content larger.
Now widely used compact-type low-voltage self-ballasted fluorescent lamp circuit is low power factor, the low power factor ballast adopts simple bridge rectifier and electrolytic capacitor to carry out rectification and filtering, cause input current only in the short time near AC power cycle peak value, can flow out, that is to say that input current will occur with the form of recurrent pulses, high distortion appears in current waveform, causes occurring larger harmonic wave.For the requirement of the GB17263D that is up to state standards, the use of low power factor ballast is restricted, and the circuit of low harmonic content will be a trend.
The utility model content
The technical problem that the utility model solves is to provide a kind of high-power factor energy-saving lamp electric ballast, to solve the problem proposed in the above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
A kind of high-power factor energy-saving lamp electric ballast, comprise EMI filter circuit, bridge rectifier, circuit of power factor correction, inversion and self-start circuit, lamp load output circuit; Between EMI filter circuit and lamp load output circuit, be connected with bridge rectifier, circuit of power factor correction in turn, inversion and self-start circuit; Between bridge rectifier and lamp load circuit, be provided with capacitor.
Described middle circuit of power factor correction, comprise diode D5～D11, capacitor C 8～C11, electrolysis E1, E2, inductance L 2, the positive pole of diode D5 meets diode D1, the negative pole of D3, negative pole connects the positive pole of diode D6, the negative pole of D6 connects an end of inductance L 2, an other end of inductance L 2 connects the positive pole of diode D7, diode D7 negative pole connects the common port of electrolysis E1 positive pole and diode D11 negative pole, the common port of the cathode connecting diode D8 negative pole of electrolysis E1 and diode D9 positive pole, diode D8 positive pole and electrolysis E2 minus earth, diode D9 negative pole connects the positive pole of diode D10, diode D10 negative pole connects the common port of diode D11 and electrolysis E2 positive pole, capacitor C 8 strings are between diode D7 negative pole and diode D9 negative pole, capacitor C 9 strings are between diode D7 positive pole and diode D10 positive pole, capacitor C 10 strings are between diode D10 positive pole and ground, capacitor C 11 strings are between diode D7 positive pole and resonant inductance output.
In described inversion and self-start circuit, resistance R 1 one end connecting triode Q1 collector terminals, the common port of the other end contact resistance R2A of resistance R 1 and resistance R 2B, the other end connecting triode Q2 collector electrode of resistance R 2A and the common port of diode D12 negative pole, the other end of resistance R 2B connects the positive pole of diode D12 and the common port of Zener diode DB3, the base stage of the other end connecting triode Q2 of Zener diode DB3, capacitor C 4 strings are between diode D12 negative pole and ground, and capacitor C 3 strings are between diode D12 positive pole and ground.
Compared with prior art, the beneficial effects of the utility model are: the utility model mentality of designing and reasonable in design, circuit of power factor correction power factor >=0. 98, current harmonics is down to below 18%, the lamp current crest ratio is lower than 1.8, reach several indexs and all by rational debugging, can meet or exceed national standard, thus it have advantages of without stroboscopic, do not pollute electrical network, cost is low, reliability is high.
The accompanying drawing explanation
Fig. 1 is the theory diagram of circuit of the present utility model;
Fig. 2 is the schematic diagram of circuit of the present utility model;
Fig. 3 is the pcb board design drawing of circuit of the present utility model.
Embodiment
In order to make of the present utility modelly to realize technological means, creation characteristic, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figures 1 to 3, a kind of high-power factor energy-saving lamp electric ballast, comprise EMI filter circuit 1, bridge rectifier 2, circuit of power factor correction 3, inversion and self-start circuit 4, lamp load output circuit 5; Between EMI filter circuit 1 and lamp load output circuit 5, be connected with bridge rectifier 2, circuit of power factor correction 3, inversion and self-start circuit 4 in turn; Between bridge rectifier 2 and lamp load circuit 5, be provided with capacitor.
Described middle circuit of power factor correction 3, comprise diode D5～D11, capacitor C 8～C11, electrolysis E1, E2, inductance L 2, the positive pole of diode D5 meets diode D1, the negative pole of D3, negative pole connects the positive pole of diode D6, the negative pole of D6 connects an end of inductance L 2, an other end of inductance L 2 connects the positive pole of diode D7, diode D7 negative pole connects the common port of electrolysis E1 positive pole and diode D11 negative pole, the common port of the cathode connecting diode D8 negative pole of electrolysis E1 and diode D9 positive pole, diode D8 positive pole and electrolysis E2 minus earth, diode D9 negative pole connects the positive pole of diode D10, diode D10 negative pole connects the common port of diode D11 and electrolysis E2 positive pole, capacitor C 8 strings are between diode D7 negative pole and diode D9 negative pole, capacitor C 9 strings are between diode D7 positive pole and diode D10 positive pole, capacitor C 10 strings are between diode D10 positive pole and ground, capacitor C 11 strings are between diode D7 positive pole and resonant inductance output.
In described inversion and self-start circuit 4, resistance R 1 one end connecting triode Q1 collector terminals, the common port of the other end contact resistance R2A of resistance R 1 and resistance R 2B, the other end connecting triode Q2 collector electrode of resistance R 2A and the common port of diode D12 negative pole, the other end of resistance R 2B connects the positive pole of diode D12 and the common port of Zener diode DB3, the base stage of the other end connecting triode Q2 of Zener diode DB3, capacitor C 4 strings are between diode D12 negative pole and ground, and capacitor C 3 strings are between diode D12 positive pole and ground.
The utility model course of work principle is, input current flows into bridge rectifier 2 by EMI filter circuit 1, and the function of EMI filter circuit 1 is to reduce the electric ballast electromagnetic disturbance; Output is Rectified alternating current after bridge rectifier 2; Bridge rectifier 2 outputs connections arrange circuit of power factor correction 3, circuit of power factor correction 3 is connected with semi-bridge inversion and self-start circuit 4, and with bridge rectifier 2, lamp load output circuit 5, set up high frequency feedback respectively, half-bridge inversion circuit 4 outputs are to 5 power supplies of lamp load output circuit.Wherein, circuit of power factor correction 3 comprises merit diode D5～D11, capacitor C 8～C11, electrolysis E1, E2, inductance L 2 forms, the positive pole of diode D5 meets diode D1, the negative pole of D3, negative pole connects the positive pole of diode D6, the negative pole of D6 connects an end of inductance L 2, an other end of inductance L 2 connects the positive pole of diode D7, diode D7 negative pole connects the common port of electrolysis E1 positive pole and diode D11 negative pole, the common port of the cathode connecting diode D8 negative pole of electrolysis E1 and diode D9 positive pole, diode D8 positive pole and electrolysis E2 minus earth, diode D9 negative pole connects the positive pole of diode D10, diode D10 negative pole connects the common port of diode D11 and electrolysis E2 positive pole, capacitor C 8 strings are between diode D7 negative pole and diode D9 negative pole, capacitor C 9 strings are between diode D7 positive pole and diode D10 positive pole, capacitor C 10 strings are between diode D10 positive pole and ground, capacitor C 11 strings are between diode D7 positive pole and resonant inductance output.
The utility model is by increasing the ON time of input current, make the waveform of source current approach the sine wave with voltage, thereby reach the purpose that reduces the current harmonics distortion, its course of work is: switching on power, is circuit supply by bridge rectifier 2 after EMI filtering 1.Bridge rectifier 2 output 100Hz/120Hz Rectified alternating currents, by diode D5, D6, energy storage inductor L2 is powered, make the linear stored magnetic energy thereon that rises also of energy storage inductor L electric current, electromotive force on energy storage inductor L is left positive right negative, now power supply circuits are to electrolysis E1, E2 serial connection charge, simultaneously to semi-bridge inversion and self-start circuit 4 power supplies.Bridge rectifier 2 outputs have isolating diode D7 between energy storage inductor L2 and electrolysis E1, E2, make the high-frequency current of half-bridge inversion circuit 4 outputs by feedback capacity C8～C11, accept the adjusting of the pulsating direct current electric current of bridge rectifier 2 and energy storage inductor L2 output.Triode Q1, the on off state of Q2 operating frequency, its cycle T=l/f, the electric current that flows through energy storage inductor L during switching tube Q2 conducting rises suddenly, its slope is constant U1/L, U1 is input voltage, Current rise speed on the larger energy storage inductor of U1 L2 is just faster, after half-bridge inversion circuit 4 starting of oscillations, triode Q1, Q2 is on off state, make variation and the triode Q2 of the electric current of energy storage inductor L2, the variation of Q2 is synchronous, current waveform on energy storage inductor L2 be one very at narrow triangular wave, its amplitude and now the input voltage of moment be directly proportional, the voltage that while half-bridge inversion circuit 4 outputs to lamp load is also sinusoidal alternating voltage, by electrolysis E1, the string of E2 fills and puts and the feedback of C8～C11 electric capacity, make circuit feed back to bridge rectifier 2 outputs by certain frequency f, and then the curent change speed of modulation energy storage inductor L2, the current waveform and the amplitude that make to flow through on energy storage inductor L2 can be directly proportional to instantaneous input voltage, reach the electric current same-phase of input voltage and input, thereby realize High Power Factor and reduce the current harmonics distortion.
Above demonstration and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.Claimed scope of the present utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. a high-power factor energy-saving lamp electric ballast, comprise EMI filter circuit, bridge rectifier, circuit of power factor correction, inversion and self-start circuit, lamp load output circuit; It is characterized in that: be connected with bridge rectifier, circuit of power factor correction, inversion and self-start circuit in turn between EMI filter circuit and lamp load output circuit.
2. a kind of high-power factor energy-saving lamp electric ballast according to claim 1, it is characterized in that: described middle circuit of power factor correction, comprise diode D5～D11, capacitor C 8～C11, electrolysis E1, E2, inductance L 2, the positive pole of diode D5 meets diode D1, the negative pole of D3, negative pole connects the positive pole of diode D6, the negative pole of D6 connects an end of inductance L 2, an other end of inductance L 2 connects the positive pole of diode D7, diode D7 negative pole connects the common port of electrolysis E1 positive pole and diode D11 negative pole, the common port of the cathode connecting diode D8 negative pole of electrolysis E1 and diode D9 positive pole, diode D8 positive pole and electrolysis E2 minus earth, diode D9 negative pole connects the positive pole of diode D10, diode D10 negative pole connects the common port of diode D11 and electrolysis E2 positive pole, capacitor C 8 strings are between diode D7 negative pole and diode D9 negative pole, capacitor C 9 strings are between diode D7 positive pole and diode D10 positive pole, capacitor C 10 strings are between diode D10 positive pole and ground, capacitor C 11 strings are between diode D7 positive pole and resonant inductance output.
3. a kind of high-power factor energy-saving lamp electric ballast according to claim 1, it is characterized in that: in described inversion and self-start circuit, resistance R 1 one end connecting triode Q1 collector terminals, the common port of the other end contact resistance R2A of resistance R 1 and resistance R 2B, the other end connecting triode Q2 collector electrode of resistance R 2A and the common port of diode D12 negative pole, the other end of resistance R 2B connects the positive pole of diode D12 and the common port of Zener diode DB3, the base stage of the other end connecting triode Q2 of Zener diode DB3, capacitor C 4 strings are between diode D12 negative pole and ground, capacitor C 3 strings are between diode D12 positive pole and ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203672868U CN203313504U (en) | 2013-06-25 | 2013-06-25 | High-power-factor electronic ballast of energy-saving lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203672868U CN203313504U (en) | 2013-06-25 | 2013-06-25 | High-power-factor electronic ballast of energy-saving lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203313504U true CN203313504U (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203672868U Expired - Fee Related CN203313504U (en) | 2013-06-25 | 2013-06-25 | High-power-factor electronic ballast of energy-saving lamp |
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| CN (1) | CN203313504U (en) |
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2013
- 2013-06-25 CN CN2013203672868U patent/CN203313504U/en not_active Expired - Fee Related
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| 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: 20131127 Termination date: 20140625 |
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| EXPY | Termination of patent right or utility model |