CN101056491A

CN101056491A - Ballast

Info

Publication number: CN101056491A
Application number: CNA200610166874XA
Authority: CN
Inventors: 李顺华
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-03
Filing date: 2006-12-17
Publication date: 2007-10-17
Also published as: WO2007098712A1

Abstract

The invention discloses a barretter belonging to gas discharge lamp technical field. The barretter contains inductance barretter L, capacitance C, which is in series to the inductance barretter of -12%<=(barretter voltage drop - discharge lamp voltage drop)/discharge lamp voltage drop*100%<=175% and is in series to the discharge lamp, then connects to the national electric network. The invention aims at solving the problem of that the present inductance barretter does not match with the national electric network when cooperating with the energy-saving apparatus.

Description

Ballast

Technical field:

The present invention relates to a kind of ballast of use for discharge lamp.

Background technology:

The energy-saving induction type ballast of existing use for discharge lamp, the Chinese patent communique, publication number CN-2606436Y, open day on March 10th, 2004 and publication number CN-1560884A, the energy-saving induction type ballast in open day on January 5th, 2005, the technical scheme of described Inductive ballast is: reach energy-conservation purpose by the operating voltage that reduces Inductive ballast in the circuit.The design of this unique innovation has overcome original Inductive ballast big unique defective of oneself power consumption in the course of the work.Make Inductive ballast reach intimate perfection, still, described Inductive ballast exists and the incompatible problem of supply power voltage when being used with conventional lighting sources.For example, the 20W fluorescent lamp circuit, when input voltage is 220V, the work pressure drop of Inductive ballast is 200V, the fluorescent tube pressure drop is 60V, and circuital current is 0.31A, and the meritorious power consumption of circuit is 31W, wherein, (ballast pressure drop-lamp pressure drop)/lamp pressure drop * 100%=(200-60)/60 * 100%=233.3%.Technical scheme according to above-mentioned energy-saving induction type ballast, Inductive ballast pressure drop in the circuit is reduced to equals the lamp pressure drop, wherein every data of (ballast pressure drop-lamp pressure drop)/lamp pressure drop * 100%=(60-60)/60 * 100%=0% (above-mentioned lamp pressure drop is nominal value) circuit are; Input voltage 97V, circuital current are 0.31A, and the meritorious power consumption of circuit is 21W.By above-mentioned energy-conservation Inductive ballast circuit as can be known, input voltage is 97V only, causes and can not directly use on China's electrical network, and this technology also can not obtain transforming.

Summary of the invention:

In view of the above-mentioned defective that prior art exists, purpose of the present invention aims to provide a kind of ballast.Described ballast can reach the Inductive ballast of energy-conservation purpose by Inductive ballast pressure drop in the reduction circuit, inserts China's electrical network and uses.Described ballast comprises: Inductive ballast L, capacitor C.Described capacitor C, be that the Inductive ballast of-12%≤(ballast pressure drop-discharge lamp pressure drop)/discharge lamp pressure drop * 100%≤+ 175% is connected preferably with the pressure drop of working, and then connect with discharge lamp and to insert China's electrical network and use, the capacitance of described capacitor C is calculated as follows; I=W/U, X _C=U/I, C=1/ ω X _C* 10 ^-6

W-is the meritorious power consumption (W) of Inductive ballast circuit in the formula, the operating voltage of U-Inductive ballast (V), the active current (A) of I-Inductive ballast circuit, X _CThe capacitive reactance of-capacitor (Ω), ω-angular frequency, the calculated value of C-capacitor (μ F).

The capacitance of described capacitor C is 0.5-1.6 a times of calculated value.

Described ballast, inductance L open with K switch series connection after be connected to the two ends of capacitor C.(being useful for descends on a large scale raises, the starting characteristic discharge lamp circuit of the change procedure of Jiang Diing significantly) major advantage of the present invention: 1, make that inductance sense ballast work pressure drop reaches energy-conservation purpose inductance town device circuit in the circuit by reducing, can enter China's network operation, this technical marketization is become possibility.2, use the gas discharge lamp circuit of this bright ballast to be capacitive.Described characteristic has two advantages; A, described gas discharge lamp circuit have constant-current characteristic.This characteristic makes discharge lamp power be tending towards constant within the specific limits, and simultaneously, anti-voltage ripple of power network is better than common Inductive ballast.B, can provide certain reactive power compensation to the Combination electrical network.

Description of drawings:

Shown in Figure 1, be the gas discharge lamp circuit figure that has the existing induction energy saving ballast of power detection.

Shown in Figure 2, be first kind of structural circuit figure of the present invention.

Shown in Figure 3, when being circuit working, the oscillogram of input voltage and operating current.

Shown in Figure 4, be second kind of structural circuit figure of the present invention.

Instantiation:

Accompanying drawings the preferred embodiments of the present invention

Example 1:

Fig. 1 is by reducing the gas discharge lamp circuit that Inductive ballast pressure drop in the circuit reaches the inductance ballast of energy-conservation purpose, is the circuit diagram that the capacity of capacitor C in the ballast of the present invention is chosen.Discharge lamp is the 20W fluorescent lamp among the figure, the work pressure drop of Inductive ballast L is (ballast pressure drop-lamp pressure drop)/lamp pressure drop * 100%=(102-60)/60 * 100%=70%, input voltage is 125V, line current 0.3A, circuit active power 22W, the capacity of the capacitor C in the ballast circuit of the present invention is I=W/V=22/123=0.179A, Xc=V/I=123/0.179=678, C=1/ ω Xc * 10 ^-6=1/314 * 687 * 10 ^-6=4.6 μ F values 3.5 μ F (0.76 times of C) insert China electrical network 220V50Hz with capacitor C 3.5 μ F by circuit diagram shown in Figure 2, its operating current is that 0.3A circuit active power is 22W, active current is I=W/V, I=22/220=0.1A, foregoing circuit input voltage 123V active current 0.179A, input voltage is 220V behind the access electric capacity, and meritorious is that stream is 0.1A, has realized the conversion of energy under the situation that guarantees the circuit operate as normal.Reached the purpose of invention.

Shown in Figure 3 is the oscillogram of the foregoing description input voltage and operating current, by oscillogram as can be known the phase place of line current I be ahead of supply voltage U phase place, promptly circuit has the capacitive feature.

Example 2:

In circuit shown in Figure 1, discharge tube is the 40W fluorescent lamp, (ballast pressure drop-lamp pressure drop)/lamp pressure drop * 100%=(117-109)/109 * 100%=7.3% wherein, and input voltage is 0.43A for the 173V circuital current, active power is 44W.The capacitor C capacity of ballast of the present invention is I=W/V=44/173=0.25A, Xc=V/I=173/0.25=692 Ω, C=1/ ω Xc * 10 ^-6=1/314 * 692 * 10-6=4.6 μ F, value 4.2 μ F (0.19 times of C) are with the power supply of 4.2 μ F electric capacity by circuit access 220V50Hz shown in Figure 2, and it is working properly.

Example 3:

In circuit shown in Figure 1, discharge tube is the 18W fluorescent lamp, (ballast pressure drop-lamp pressure drop)/lamp pressure drop * 100%=(135-60)/60 * 100%=125% wherein, input voltage 157V, circuital current 0.29A, active power 24W, ballast circuit capacitor C capacity of the present invention is I=W/V=24/157=0.15A, Xc=V/I=157/0.15=1047 Ω, C=1/ ω Xc * 10 ^-6=1/314 * 1047 * 10 ^-6=3 μ F values 3.3 μ F (1.1 times of C) press the power supply that circuit shown in Figure 2 inserts 220V50Hz with the container of 3.3 μ F, and it is working properly.

The foregoing description is useful for the gas discharge lamp circuit of the starting characteristic of the change procedure that fluctuates among a small circle.

Example 4:

Discharge tube is the 150W high-pressure sodium lamp in circuit shown in Figure 1, (ballast pressure drop-lamp pressure drop)/lamp pressure drop * 100%=(135-100)/100 * 100%=35% wherein, input voltage 170V, circuital current 1.85A, circuit active power 175W, the capacitance I=W/V=157/170=1.03A of ballast circuit capacitor C of the present invention, Xc=V/I=170/1.03=165 Ω, C=1/ ω Xc * 10 ^-6=1/165 * 314 * 10 ^-6=19.3 μ F values 16.5 μ F (0.85 times of C).

With reference to circuit shown in Figure 4, the L shown in the figure _RiseAnd K switch, two effects are arranged: 1, satisfy the required trigger voltage of circuit.2, satisfy the rising that descends, the significantly requirement of the starting characteristic of the change procedure of Jiang Diing on a large scale.L _RiseWith the capacitor C parallel connection, consequently, described parallel circuits has inductance characteristic by the K switch connected, and promptly electric current lags behind voltage, changes L _RiseInductance value, can change the size of starting current.K switch promptly disconnects after start-up course is finished, and makes circuit enter normal operating condition.In Fig. 4, L _RiseBe 37mH, capacitor C 16.5 μ F, above-mentioned Inductive ballast and 150W high-pressure sodium lamp bulb, input voltage 220V50Hz starting current 2.35A after 4 minutes, is connected to the time relay action at circuit input two ends, and K switch disconnects, and circuit enters normal operating condition.The voltage at capacitor two ends is 365V (selected capacitor must satisfy quality and withstand voltage requirement).

Need to prove: 1, the capacitance of the capacitor in the circuit of the present invention, can be by the discharge lamp circuit be resolved, use complicated account form calculating such as simulation equation formula, draw the impedance of Inductive ballast, and with the capacitance of the close capacitor of the result who uses technical solution of the present invention to draw.2, the overcurrent protection among Fig. 2 Fig. 4; must have generally speaking; reason is: reach energy-conservation Inductive ballast when being used with conventional lighting sources by reducing Inductive ballast pressure drop in the circuit; its operating voltage is less than line voltage; in the ifs circuit; punch-through appears in capacitor, and Inductive ballast and light source may damage simultaneously.

Above-mentioned disclosed embodiment, should be appreciated that and be, this disclosed embodiment only is can be with the example of the present invention of various replacement forms realizations, it is to apply restriction that this disclosed concrete structure and function detail should not be construed as, it is the basis of claim, and be as those skilled in the art under the situation that does not deviate from the spirit and scope of the present invention, diversely adopt the present invention schematically the basis.

Claims

1, a kind of ballast that is used for discharge lamp comprises inductor ballast L, capacitor C.It is characterized in that: capacitor C is that the Inductive ballast of-12%≤(ballast pressure drop-discharge lamp pressure drop)/discharge lamp pressure drop * 100%≤+ 175% is connected with the work pressure drop.

2, ballast according to claim 1 is characterized in that: the capacitance of capacitor C is calculated as follows; I=W/U, X _C=U/I, C=1/ ω X _C* 10 ^-6

3, ballast according to claim 1 is characterized in that: the capacitance of capacitor C is 0.5-1.6 a times of calculated value.

4, ballast according to claim 1 is characterized in that: inductance L _OpenWith the two ends that are connected to capacitor C after the K switch series connection.