CN201623911U - Constant power electronic ballast for universal high-intensity gas discharge lamp - Google Patents
Constant power electronic ballast for universal high-intensity gas discharge lamp Download PDFInfo
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- CN201623911U CN201623911U CN2010201239801U CN201020123980U CN201623911U CN 201623911 U CN201623911 U CN 201623911U CN 2010201239801 U CN2010201239801 U CN 2010201239801U CN 201020123980 U CN201020123980 U CN 201020123980U CN 201623911 U CN201623911 U CN 201623911U
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Abstract
The utility model discloses a constant power electronic ballast for a universal high-intensity gas discharge lamp. The utility model is characterized in that the electronic ballast has a three-level structure, consisting of an APFC power factor correcting circuit, and a Buck converter based on an even input external current loop and a summit internal current loop, and a resonance full bridge inverter circuit. 220V AC input is filtered by EMI, and then accessed to the APFC power factor correcting circuit and inverted into DC, and then inverted into 0-150V adjustable DC voltage through the Buck inverter, and finally inverted into frequency-adjustable AC square-wave voltage by the resonance full bridge inverter circuit and used as the drive signal of the HID lamp. The utility model can acquire better constant power characteristic, extend the service life of the HID lamp and match with kinds of HID lamps including ceramic metal halogen lamps, quartz metal halogen lamps and high voltage sodium lamps.
Description
Technical field
The utility model relates to HID lamp constant-power electronic ballast, and a kind of driving standard high-intensity gas discharge lamp driver of (comprising high-pressure sodium lamp, metal halide lamp) that is applicable to of more specifically saying so also is a ballast, belongs to the illumination electronic applications.
Background technology
High intensity discharge light source HID, as high-pressure sodium lamp HPS, metal halide lamp MH is that sixties development, the eighties form large-scale production, higher pressure mercury lamp light efficiency height (1～1.5 times), color rendering good (Ra＞60), life-span was widely used in road, venue, large-scale illuminating engineering etc. more than 6000 hours.For making HID lamp (particularly MH) to room lighting development, the large-scale or miniaturization of HID lamp forward lamp power, photochromic stability (low colour temperature) are good, high-color rendering and extra long life direction develop.The match appliance annex has very important effect to the development of HID light source, and its research emphasis is the integral type electric ballast.Comprise solution: bear high pressure/heavy current impact, reduce temperature rise, secondary warm start and technical barriers such as high frequency acoustic resonance frequency, permanent power control.The main power circuit structure of existing HID electric ballast can be divided into two kinds, i.e. " tertiary structure " and " two-layer configuration " substantially.Wherein, " tertiary structure " is made up of PFC APFC, Buck reduction voltage circuit and bridge type inverse three partial circuits, and three partial circuits of this structure are independent separately, are independent of each other, and are simple and reliable, but cost is high slightly; " two-layer configuration " is made up of pfc circuit and two Buck inverter circuit, and two Buck inverter circuits should be finished step-down, finish the function of inversion again, and its structure is relatively complicated, and reliability is lower.Mainly adopt in the market " tertiary structure ".High-voltage gas discharging light has polytype, and as ceramic gold-halogen lamp, quartz metal halide lamp, high-pressure sodium lamp etc., prior art all is according to different light fixtures basically, and the ballast that design matches makes the of a great variety of ballast, brings inconvenience for production and use.
The utility model content
The utility model is the weak point for avoiding above-mentioned prior art to exist, a kind of general constant-power electronic ballast for high-intensity gas discharge lamp is provided, in the hope of obtaining constant output characteristic preferably, prolong the useful life of HID light fixture, and can be used with multiple HID light fixture, comprise ceramic gold-halogen lamp, quartz metal halide lamp and high-pressure sodium lamp etc.
The utility model technical solution problem adopts following technical scheme:
The design feature of the utility model HID constant-power electronic ballast is:
The design feature of the utility model general constant-power electronic ballast for high-intensity gas discharge lamp is to adopt tertiary structure, by the APFC circuit of power factor correction, form based on Buck buck converter that encircles in average current input outer shroud and the peak current and resonance full bridge inverter; 220V exchanges input described APFC circuit of power factor correction of access after EMI filtering and is converted to direct current, converts the adjustable dc voltage of 0-150V to, is converted to the ac square-wave voltage of frequency adjustable as HID lamp drive signal by described resonance full bridge inverter again through described Buck buck converter again.
The design feature of the utility model general constant-power electronic ballast for high-intensity gas discharge lamp also is: described APFC circuit of power factor correction comprises:
The electromagnetic interface filter of forming by fuse F1, capacitor C 2, C3, inductance L 2;
The full bridge rectifier of forming by diode D1, D3, D4, D5;
Temperature switch S1, PFC inductance L 1, switching tube Q1, fast recovery diode D2, electrochemical capacitor C9, C10 and control chip IC1;
The ac voltage detection circuit of forming by resistance R 1, R3 and capacitor C 6;
The auxiliary starting circuit of forming by resistance R 4 and capacitor C 8;
The output voltage detecting circuit of forming by resistance R 7, R8, R9;
The accessory power supply and the inductance zero cross detection circuit that constitute by diode D6, voltage stabilizing didoe ZD1, capacitor C 7 and resistance R 11;
The PI correcting circuit that constitutes by resistance R 2, R10 and capacitor C 4.
Described Buck buck converter is to constitute the average current input outer shroud by inductance L 3, metal-oxide-semiconductor Q4, sustained diode 9, capacitor C 25, sample resistance R35, single order low-pass filtering link R41, C19 and amplifier OP1; Constitute in the peak current by comparator C OMP1 and to encircle;
Wherein, described sample resistance R35 is the metal-oxide-semiconductor Q4 current sampling resistor that is connected in the loop, changes the current signal in the metal-oxide-semiconductor Q4 into pulse voltage signal, and its pulse amplitude is directly proportional with the output current of ballast, as the feedback signal of encircling in the peak current; The low-pass filtering link that resistance R 41 and capacitor C 19 constitute is level and smooth direct current signal with the shift pulse signal of sample resistance R35, described direct current signal is directly proportional with the average current input of described Buck circuit, with the feedback signal of described direct current signal as the average current input outer shroud.
Described resonance full bridge inverter is to constitute full bridge inverter by metal-oxide-semiconductor Q5, Q6, Q7 and Q8, constitute the resonance start-up circuit by resonant inductance L4 and resonance capacitor C 28, C29, described full bridge inverter changes the direct current of described Buck circuit output into ac square-wave voltage, the excitation that provides to HID.
The utility model adopts tertiary structure, by the APFC circuit of power factor correction, form based on Buck buck converter that encircles in average current input outer shroud and the peak current and resonance full bridge inverter; 220V exchanges input described APFC circuit of power factor correction of access after EMI filtering and is converted to direct current, converts the adjustable dc voltage of 0-150V to, is converted to the ac square-wave voltage of frequency adjustable as HID lamp drive signal by the resonance full bridge inverter again through buck converter again.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the output voltage of the utility model ballast and electric current can change according to its supporting HID light fixture characteristic variations, can adaptive polytype HID light fixture, it is the light fixture adaptive control, belong to general HID electric ballast, can reduce product specification, save production, maintenance cost, adapt to industrialization production in enormous quantities.
When 2, the utility model ballast output voltage was between the 60V-150V scope, its power output substantially constant had the power bracket than Daheng.The permanent power circuit control method that it is simple and reliable does not need multiplier circuit, can reduce cost, improve reliability.
3, the ac square wave changeable frequency of the utility model ballast output can satisfy the switching of light fixture starting state and stable state, is operated in high frequency during startup, produces resonance high-voltage at the lamp two ends, during stable state, in order to suppress the sound phenomenon of shaking, is operated in low frequency.
Description of drawings
Fig. 1 is the utility model three-level system structured flowchart;
Fig. 2 is the permanent power of the utility model, light fixture adaptive control block diagram;
Fig. 3 is the full-bridge converter circuit theory diagrams that the utility model band resonance starts network;
Fig. 4 is the utility model input EMI filtering and PFC circuit of power factor correction schematic diagram;
Fig. 5 is the utility model Buck converter and control circuit thereof, full bridge inverter schematic diagram;
Fig. 6 is the utility model Single-chip Controlling, full bridge driving circuit schematic diagram.
Below pass through embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.
Embodiment
Referring to Fig. 1, present embodiment adopts tertiary structure, 220V exchanges input and insert the APFC circuit after EMI filtering, be converted into the direct current about 400V, again through the Buck circuit convert thereof into the adjustable dc voltage of 0-150V, the ac square-wave voltage that is converted to frequency adjustable through band resonance full bridge inverter again drives HID.
Referring to Fig. 2, present embodiment is permanent power control and the light fixture adaptive control function with the constant current control that realizes the HID starting state based on the Buck buck converter that encircles in average current input outer shroud, the peak current, stable state.Comprise with metal-oxide-semiconductor Q4, diode D9, inductance L 3, capacitor C 25 has constituted basic Buck converter, resistance R 35 is for being connected on the current sampling resistor of the switching tube in the loop, change the current signal of metal-oxide-semiconductor Q4 into voltage signal, its waveform is seen Fig. 2, be pulse signal, its pulse amplitude is directly proportional with the output current of ballast, as the feedback signal of encircling in the peak current, realize the constant current control of starting state, when its through R41, become level and smooth direct current signal after the low-pass filtering link that C19 forms, its average current input with the Buck circuit is directly proportional, as the feedback signal of average current input outer shroud, realize permanent average current input control, because of Buck converter input voltage is constant is 400V, and power output equals input power, and permanent input current control can be equivalent to output constant power control.When the HID lamp had just started, equivalent resistance was very low, and ballast output voltage, power are less, and the outer ring filling of average current input has only that ring works in the peak current, and control HID starts with constant maximum current.Along with the rising of lamp resistance, lamp power increases gradually, and when reaching the power of setting, the average current input ring works, and the control ballast output power is constant, improves HID useful life and light efficiency performance thereof.
Referring to Fig. 3, the resonance full bridge inverter is to constitute full-bridge converter by metal-oxide-semiconductor Q5, Q6, Q7 and Q8, wherein, Q5, Q8 conducting simultaneously, Q6, Q7 conducting simultaneously, its drive signal provide by single-chip microcomputer that to convert, the direct current output of Buck buck converter to duty ratio be 50% square-wave signal.Its output constitutes the shunt load resonant circuit through resonant inductance L4, resonant capacitance C28, C29 and HID light fixture.By resonant inductance, capacitance parameter are set, make its quality factor very big.Before HID started, its equivalent resistance infinity was operated in by the Single-chip Controlling full-bridge converter near the resonance frequency of L4, C28, C29, formed the high pressure of 3-5KV at capacitor C 28, C29 two ends, lamp was punctured start.Start the back in order to suppress the intrinsic sound of the HID light fixture phenomenon of shaking, the control full-bridge converter is operated in low frequency state (100-250Hz).
Referring to Fig. 4, input EMI filtering and APFC APFC are to adopt inductive current critical flow Discontinuous Conduction mode control model.The 220V electric main is converted into the 400V direct voltage, realizes the unity power factor calibration function simultaneously, improve the system power factor greatly, reduce Harmonic Interference electrical network with this.
Electromagnetic interface filter shown in Figure 4, as to form by fuse F1, capacitor C 2, C3, inductance L 2; The full bridge rectifier of forming by diode D1, D3, D4, D5; Temperature switch S1, PFC inductance L 1, metal-oxide-semiconductor Q1, fast recovery diode D2, electrochemical capacitor C9, C10 and control chip IC1; The ac voltage detection circuit of forming by resistance R 1, R3 and capacitor C 6; The auxiliary starting circuit of forming by resistance R 4 and capacitor C 8; The output voltage detecting circuit of forming by resistance R 7, R8, R9; The accessory power supply and the inductance zero cross detection circuit that constitute by diode D6, voltage stabilizing didoe ZD1, capacitor C 7 and resistance R 11; The PI correcting circuit that constitutes by resistance R 2, R10 and capacitor C 4.
Fig. 5 is described to be Buck converter and control circuit thereof in the present embodiment, full bridge inverter detailed schematic diagram, and wherein the Buck circuit is converted into the adjustable direct current of 0-150V with APFC output, is converted into the ac square wave of 50% duty ratio again through full bridge inverter.
Figure 6 shows that Single-chip Controlling, full bridge driving circuit figure, by resistance R 19, R20, the Buck circuit output voltage testing circuit that capacitor C 12 is formed, and be converted to digital quantity by the inner AD of single-chip microcomputer, and judge the state of HID in view of the above, adjust the frequency of full bridge inverter in real time, resistance R 12, voltage stabilizing didoe ZD2, capacitor C 16 constitute the power supply circuits of single-chip microcomputer.Single-chip microcomputer sends the pwm signal of different frequency by PB0, PB1 mouth, amplify by triode Q2, Q3 after is the metal-oxide-semiconductor Q5-Q8 that the integrated driving chip of half-bridge drives full bridge inverter by IC2, IC3, wherein C14, C15 are the driving resistor that bootstrap capacitor, R25, R28, R23, R27 are respectively metal-oxide-semiconductor Q5-Q8.
Claims (4)
1. general constant-power electronic ballast for high-intensity gas discharge lamp, it is characterized in that adopting tertiary structure, by the APFC circuit of power factor correction, form based on Buck buck converter that encircles in average current input outer shroud and the peak current and resonance full bridge inverter; 220V exchanges input described APFC circuit of power factor correction of access after EMI filtering and is converted to direct current, converts the adjustable dc voltage of 0-150V to, is converted to the ac square-wave voltage of frequency adjustable as HID lamp drive signal by described resonance full bridge inverter again through described Buck buck converter again.
2. general constant-power electronic ballast for high-intensity gas discharge lamp according to claim 1 is characterized in that described APFC circuit of power factor correction comprises:
The electromagnetic interface filter of forming by fuse F1, capacitor C 2, C3, inductance L 2;
The full bridge rectifier of forming by diode D1, D3, D4, D5;
Temperature switch S1, PFC inductance L 1, switching tube Q1, fast recovery diode D2, electrochemical capacitor C9, C10 and control chip IC1;
The ac voltage detection circuit of forming by resistance R 1, R3 and capacitor C 6;
The auxiliary starting circuit of forming by resistance R 4 and capacitor C 8;
The output voltage detecting circuit of forming by resistance R 7, R8, R9;
The accessory power supply and the inductance zero cross detection circuit that constitute by diode D6, voltage stabilizing didoe ZD1, capacitor C 7 and resistance R 11;
The PI correcting circuit that constitutes by resistance R 2, R10 and capacitor C 4.
3. general constant-power electronic ballast for high-intensity gas discharge lamp according to claim 1 is characterized in that described Buck buck converter is to constitute the average current input outer shroud by inductance L 3, metal-oxide-semiconductor Q4, sustained diode 9, capacitor C 25, sample resistance R35, single order low-pass filtering link R41, C19 and amplifier OP1; Constitute in the peak current by comparator C OMP1 and to encircle;
Wherein, described sample resistance R35 is the metal-oxide-semiconductor Q4 current sampling resistor that is connected in the loop, changes the current signal in the metal-oxide-semiconductor Q4 into pulse voltage signal, and its pulse amplitude is directly proportional with the output current of ballast, as the feedback signal of encircling in the peak current; The low-pass filtering link that resistance R 41 and capacitor C 19 constitute is level and smooth direct current signal with the shift pulse signal of sample resistance R35, described direct current signal is directly proportional with the average current input of described Buck circuit, with the feedback signal of described direct current signal as the average current input outer shroud.
4. general constant-power electronic ballast for high-intensity gas discharge lamp according to claim 1, it is characterized in that described resonance full bridge inverter is to constitute full bridge inverter by metal-oxide-semiconductor Q5, Q6, Q7 and Q8, constitute the resonance start-up circuit by resonant inductance L4 and resonance capacitor C 28, C29, described full bridge inverter changes the direct current of described Buck circuit output into ac square-wave voltage, the excitation that provides to HID.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201239801U CN201623911U (en) | 2010-03-04 | 2010-03-04 | Constant power electronic ballast for universal high-intensity gas discharge lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201239801U CN201623911U (en) | 2010-03-04 | 2010-03-04 | Constant power electronic ballast for universal high-intensity gas discharge lamp |
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| CN201623911U true CN201623911U (en) | 2010-11-03 |
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| CN2010201239801U Expired - Fee Related CN201623911U (en) | 2010-03-04 | 2010-03-04 | Constant power electronic ballast for universal high-intensity gas discharge lamp |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593812A (en) * | 2012-03-08 | 2012-07-18 | 北京科锐配电自动化股份有限公司 | Constant-power discharge circuit of capacitor |
| CN102801341A (en) * | 2011-05-27 | 2012-11-28 | 英飞凌科技股份有限公司 | Ac/dc converter with a pfc and a dc/dc converter |
| CN102916593A (en) * | 2011-08-05 | 2013-02-06 | 英飞凌科技股份有限公司 | Power converter circuit |
| CN110582153A (en) * | 2019-08-01 | 2019-12-17 | 福建睿能科技股份有限公司 | Driving circuit, driving method thereof and electronic ballast |
-
2010
- 2010-03-04 CN CN2010201239801U patent/CN201623911U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801341A (en) * | 2011-05-27 | 2012-11-28 | 英飞凌科技股份有限公司 | Ac/dc converter with a pfc and a dc/dc converter |
| CN102801341B (en) * | 2011-05-27 | 2016-09-28 | 英飞凌科技股份有限公司 | There is the AC/DC transducer of PFC and DC/DC transducer |
| CN102916593A (en) * | 2011-08-05 | 2013-02-06 | 英飞凌科技股份有限公司 | Power converter circuit |
| CN102916593B (en) * | 2011-08-05 | 2016-12-21 | 英飞凌科技股份有限公司 | Power converter circuit |
| CN102593812A (en) * | 2012-03-08 | 2012-07-18 | 北京科锐配电自动化股份有限公司 | Constant-power discharge circuit of capacitor |
| CN110582153A (en) * | 2019-08-01 | 2019-12-17 | 福建睿能科技股份有限公司 | Driving circuit, driving method thereof and electronic ballast |
| CN110582153B (en) * | 2019-08-01 | 2022-04-01 | 福建睿能科技股份有限公司 | Driving circuit, driving method thereof and electronic ballast |
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Legal Events
| Date | Code | Title | Description |
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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: 20101103 Termination date: 20130304 |