CN2422787Y - Electronic ballast for high voltage sodium lamp - Google Patents
Electronic ballast for high voltage sodium lamp Download PDFInfo
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- CN2422787Y CN2422787Y CN 00227859 CN00227859U CN2422787Y CN 2422787 Y CN2422787 Y CN 2422787Y CN 00227859 CN00227859 CN 00227859 CN 00227859 U CN00227859 U CN 00227859U CN 2422787 Y CN2422787 Y CN 2422787Y
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Abstract
The utility model relates to an electronic ballast for high voltage sodium lamps, which comprises a rectifying filter circuit, a power factor control and voltage stabilizer and a high frequency drive circuit; in addition, the electronic ballast for high voltage sodium lamps also comprises a central controller and a starting working circuit, wherein, the output end of the power factor control and voltage stabilizer is connected to the starting working circuit; the output end of the starting working circuit is connected to a sodium lamp L; the control end of the starting working circuit is connected to the central controller; the control end of the high frequency drive circuit is connected to the central controller; current on the sodium lamp L is fed back to the central controller by a current feedback circuit. The utility model has the advantages of high safety and reliability, long service life of the products, low power consumption, low noise and less impact to electric network.
Description
The utility model relates to electronic ballast of high voltage sodium lamp.
At present, the electronic ballast of high voltage sodium lamp majority is the coil type Inductive ballast on the general market, this ballast pass through the negative voltage-current characteristic current limliting of inductance coil to high-pressure sodium lamp, to realize the operate as normal of high-pressure sodium lamp; There are a lot of shortcomings in this structure: 1) the inductance coil ballast is the inductive load of on-line operation at the alternating current of 50HZ, thus bigger to the impact of electrical network, disturb also big, noise and the power consumption bigger; 2) because general electronic ballast of high voltage sodium lamp is a kind of hard switching control, and circuit designs, can not make suitable change according to the actual state of work; When 3) traditional electronic ballast of high voltage sodium lamp starts sodium vapor lamp is hard reboot, and the starting current of lamp is bigger, and under situations such as sodium vapor lamp is short-circuited, damage, still constantly attempts starting sodium vapor lamp, power consumption and cause danger easily; 4) working condition of inductance coil ballast is lacked the detection and the corresponding protective circuit of little necessity, ballast is inner to be damaged easily.
The purpose of this utility model provides a kind of electronic ballast of high voltage sodium lamp, and its fail safe, reliability are higher, the life of product height, and intelligent higher, power consumption is little, noise is low, impacts less to electrical network.
The utility model is realized by following technical scheme: it comprises current rectifying and wave filtering circuit, power factor controlling and pressurizer, high frequency drive circuit, the output of current rectifying and wave filtering circuit is connected the input of power factor controlling and pressurizer, the output of power factor controlling and pressurizer is connected the input of high frequency drive circuit, the output of high frequency drive circuit is connected on the sodium vapor lamp L, it also comprises central controller and starts operating circuit in addition, wherein:
A) output of power factor controlling and pressurizer is connected and starts on the operating circuit, and the output that starts operating circuit is connected on the sodium vapor lamp L, and the control end that starts operating circuit is connected on the central controller;
B) control end of high frequency drive circuit is connected on the central controller;
C) electric current on the sodium vapor lamp L is transmitted back on the central controller by current feedback circuit.
The front of above-mentioned described current rectifying and wave filtering circuit can also be provided with the noise filter circuit.
The front of above-mentioned described current rectifying and wave filtering circuit can also be provided with over-voltage over-current protection circuit.
The front of above-mentioned described noise filter circuit can also be provided with over-voltage over-current protection circuit.
Above-mentioned described high frequency drive circuit output end voltage is transmitted back on the central controller by voltage feedback circuit, and central controller is connected on the sodium vapor lamp L by voltage protection circuit.
The utility model compared with prior art has following advantage: 1) adopted the power factor controlling technology, power factor is brought up to more than 98%, adopted soft Starting Technology, realize starting intellectuality, starting current is less, and the number of starts is monitored, saved electric energy, electrical network has been impacted reduce; 3) adopt the switching power supply technology in addition, when power network fluctuation, electrical network has been impacted less, reduced the stroboscopic phenomenon of lamp; 3) adopt the noise filtering technique, noise is significantly reduced; 4) adopted the kinds of protect circuit, and detected, improved fail safe, reliability and the life-span of sodium vapor lamp greatly by the real work situation of central controller to sodium vapor lamp.
Below in conjunction with accompanying drawing the utility model is done detailed explanation:
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is the circuit diagram of the utility model correspondence;
Fig. 3 is a ZL3 part corresponding circuits block diagram among Fig. 2.
As shown in Figure 1, the utility model comprises current rectifying and wave filtering circuit (3), power factor controlling and pressurizer (4), high frequency drive circuit (5), the output of current rectifying and wave filtering circuit (3) is connected the input of power factor controlling and pressurizer (4), the output of power factor controlling and pressurizer (4) is connected the input of high frequency drive circuit (5), the output of high frequency drive circuit (5) is connected on the sodium vapor lamp L, it also comprises central controller (10) and starts operating circuit (6) in addition, wherein:
A) output of power factor controlling and pressurizer (4) is connected and starts on the operating circuit (6), and the output that starts operating circuit (6) is connected on the sodium vapor lamp L, and the control end that starts operating circuit (6) is connected on the central controller (10);
B) control end of high frequency drive circuit (5) is connected on the central controller (10);
C) electric current on the sodium vapor lamp L is transmitted back on the central controller (10) by current feedback circuit (7).
The front of above-mentioned described current rectifying and wave filtering circuit (3) can also be provided with noise filter circuit (2);
The front of above-mentioned described current rectifying and wave filtering circuit (3) can also be provided with over-voltage over-current protection circuit (1).
The front of above-mentioned described noise filter circuit (2) can also be provided with over-voltage over-current protection circuit (1).
The voltage of above-mentioned described sodium vapor lamp L is transmitted back on the central controller (10) by voltage feedback circuit (8), and central controller (10) is connected on the sodium vapor lamp L by voltage protection circuit (9).
As shown in Figure 2; over-voltage over-current protection circuit (1) comprises pressure limiting resistance R V and fuse FUSE; pressure limiting resistance R V is connected in two voltage input ends in parallel, and fuse FUSE is connected on a voltage input end, when overtension and piezoresistance RV of too high time limit of electric current and fuse FUSE work respectively.
Work respectively.
As shown in Figure 2, noise filter circuit (2) comprises capacitor C 1, L1, C2, C3 and C4, and its effect is that the noise signal of coming in from electrical network is removed.
As shown in Figure 2, current rectifying and wave filtering circuit (3) comprises rectifier DW1 and capacitor C 5, and the output of current rectifying and wave filtering circuit (3) is connected the input of IC power supply, and the IC power supply is central controller (10) power supply; Power factor controlling and pressurizer (4) comprise resistance R 1, R2, R3, R4, R5, R6, R7 and capacitor C 6, C7, C8, C9, C10 ic chip 1, diode D5, instrument transformer T1, switching tube Q1; Ic chip 1 is a KA series power factor controlling integrated package, and during work, electric current charges to capacitor C 7 through R3, when the voltage of capacitor C 7 reaches 10V, IC1 starts, and, is monitored by the 3rd pin of IC1 after R1, R2 dividing potential drop by the input voltage behind the current rectifying and wave filtering circuit (3); IC1 utilizes the effect of switching tube Q1 to make the pulsating current of input become the dither electric current; Utilizing the effect of instrument transformer T1, is that pulsed dc voltage increases, and carries out filtering high-frequency rectifier through D6 and C10, produces the direct voltage raise on C10, this direct voltage by R8, R9 dividing potential drop after the 1st pin monitoring of IC1; In addition, the electric current in the circuit is monitored by the 5th pin that resistance R 4 is input to IC1 after instrument transformer T1 lotus root is closed; IC1 carries out analysis-by-synthesis to the parameter of above-mentioned several monitoring and calculates, and the suitable shutoff of output pwm pulse control switch pipe Q1 makes the operating current in the circuit follow the variation of input voltage all the time, thereby makes power factor near 1; And make the voltage on the C10 be stabilized in a certain value, when input voltage fluctuation, the suitable shutoff of IC1 control switch pipe Q1 remains unchanged the direct voltage on the C10.
As shown in Figure 2, high frequency drive circuit (5) comprises ic chip 2, capacitor C 11, C12, C13, C14, resistance R 11, diode D7, switching tube Q2, Q3, and wherein ic chip 2 is higher-order of oscillation IC; One end of resistance R 10 is connected on the central controller (10), the 4th pin of the control ZL3 of central controller (10) charges to C12 by R10, IC2 starts when reaching 8V, R11, C13 determine its frequency of oscillation, D7, Q2, Q3, C14, IC2 constitute the bootstrap type half-bridge driver, and the capacitor C 10 in power factor controlling and the pressurizer (4) is connected the source electrode of Q2.Voltage feedback circuit (8) comprises capacitor C 17, C18, diode D8, D9, DZ1; these elements constitute rectification, filtering, voltage stabilizing circuit; the output voltage of high frequency drive circuit (5) is presented to central controller (10), CPU whether determine starting resistor protective circuit (9) according to the size of voltage then so that the stable operating voltage of sodium vapor lamp L in certain scope.
Start operating circuit (6) and comprise direct impulse inhibitor, reverse impulse inhibitor, controllable silicon TR1, resistance R 15, R12, capacitor C 16 and inductance L 2, wherein inductance L 2 is cascaded with sodium vapor lamp L, the centre tap of inductance L 2 and capacitor C 16, resistance R 15, controllable silicon TR1, direct impulse inhibitor, reverse impulse inhibitor are cascaded, and the control end of controllable silicon TR1 is controlled by central controller (10).
As shown in Figure 3; the utility model integrates formation ZL3 startup with central controller (10) and peripheral partial circuit thereof; monitoring; protective circuit; the 1st pin links to each other with the 2nd pin among the ZL3; the 5th pin links to each other with the 6th pin; the power supply voltage of the 4th pin monitoring high frequency drive circuit (5) and the output voltage of high frequency drive circuit (5); be responsible for turn-offing the power supply voltage of high frequency drive circuit (5) simultaneously; high frequency drive circuit (5) drives sodium vapor lamp L through the 2nd pin and the 1st pin of ZL3; the 2nd pin and the 1st pin are sent to central controller (10) by current feedback circuit (7) with current signal and detect and monitor; current feedback circuit (7) mainly comprises current sensor; A/D converter; integrated package ZL3 the 3rd foot control system starts the control end of the controllable silicon TR1 in the operating circuit (6); central controller of the present utility model (10) can be a single-chip microcomputer, also can be central processor CPU or other controller.
During work, the both end voltage that ic chip 1 starts back C10 is 10V, and C10 is by 16 chargings of the capacitor C in 12 pairs of startup operating circuits of resistance R (6); The 4th pin of ZL3 becomes high level and gives the capacitor C in the high frequency drive circuit (5) 12 chargings, high frequency drive circuit (5) is started, the electric current of high frequency drive circuit (5) is sent to sodium vapor lamp L by the 2nd pin, the 1st pin of ZL3, after central controller (10) detects the current signal of the 2nd pin, after postponing a period of time, the 3rd pin of central controller (10) control ZL3 sends pulse signal to TR1, make the TR1 conducting, electric charge on the C16 is by the 5th pin discharge of R15 to ZL3, produce the above electric pulse of 3000V because the boosting of L2 is gone up sodium vapor lamp L, L lights with sodium vapor lamp.Central controller (10) stops to send pulse signal to the 3rd human hair combing waste of ZL3 after detecting the electric current of the 1st pin, the 2nd pin of ZL3, closes high-voltage pulse; When sodium vapor lamp opens circuit or breaks down can not light the time, the 3rd foot control system of central controller (10) by ZL3 starts operating circuit (6) send the several times high-voltage pulse after, still in the time of can not lighting, central controller (10) sends the 4th pin output low level of signal controlling ZL3, thereby close high frequency drive circuit (5), stop to conveying voltages such as sodium.After a period of time, repeat sodium vapor lamp is started test, the utility model is a soft start to the startup of sodium vapor lamp, and the electric current that flows through sodium vapor lamp L is less, has lowered the impact to electrical network greatly; The real work situation of whole in addition high frequency drive circuit (5) and startup operating circuit (6) all is subjected to the detection and the control of central controller (10), has realized intellectuality, has reduced the loss of electric energy, has improved security of products, reliability and life-span.
Claims (5)
1, electronic ballast of high voltage sodium lamp, comprise current rectifying and wave filtering circuit (3), power factor controlling and pressurizer (4), high frequency drive circuit (5), the output of current rectifying and wave filtering circuit (3) is connected the input of power factor controlling and pressurizer (4), the output of power factor controlling and pressurizer (4) is connected the input of high frequency drive circuit (5), the output of high frequency drive circuit (5) is connected on the sodium vapor lamp L, it is characterized in that it also comprises central controller (10) and starts operating circuit (6), wherein:
A) output of power factor controlling and pressurizer (4) is connected and starts on the operating circuit (6), and the output that starts operating circuit (6) is connected on the sodium vapor lamp L, and the control end that starts operating circuit (6) is connected on the central controller (10);
B) control end of high frequency drive circuit (5) is connected on the central controller (10);
C) electric current on the sodium vapor lamp L is transmitted back on the central controller (10) by current feedback circuit (7).
2, electronic ballast of high voltage sodium lamp according to claim 1 is characterized in that in the front of current rectifying and wave filtering circuit (3) noise filter circuit (2) being set.
3, electronic ballast of high voltage sodium lamp according to claim 1 is characterized in that in the front of current rectifying and wave filtering circuit (3) over-voltage over-current protection circuit (1) being set.
4, electronic ballast of high voltage sodium lamp according to claim 2 is characterized in that in the front of noise filter circuit (2) over-voltage over-current protection circuit (1) being set.
5, according to described any one electronic ballast of high voltage sodium lamp of claim 1 to 4; it is characterized in that high frequency drive circuit (5) output end voltage is transmitted back on the central controller (10) by voltage feedback circuit (8), central controller (10) is connected on the sodium vapor lamp L by voltage protection circuit (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00227859 CN2422787Y (en) | 2000-04-11 | 2000-04-11 | Electronic ballast for high voltage sodium lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00227859 CN2422787Y (en) | 2000-04-11 | 2000-04-11 | Electronic ballast for high voltage sodium lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2422787Y true CN2422787Y (en) | 2001-03-07 |
Family
ID=33591430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00227859 Expired - Fee Related CN2422787Y (en) | 2000-04-11 | 2000-04-11 | Electronic ballast for high voltage sodium lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2422787Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1956615B (en) * | 2005-10-25 | 2010-08-25 | 鸿富锦精密工业（深圳）有限公司 | Drive device and method of discharge lamp |
-
2000
- 2000-04-11 CN CN 00227859 patent/CN2422787Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1956615B (en) * | 2005-10-25 | 2010-08-25 | 鸿富锦精密工业（深圳）有限公司 | Drive device and method of discharge lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |