CN201332532Y - High-frequency electronic frequency converter of high-power parallel auto-excitation type non-polar fluorescent lamp - Google Patents
High-frequency electronic frequency converter of high-power parallel auto-excitation type non-polar fluorescent lamp Download PDFInfo
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- CN201332532Y CN201332532Y CNU2009200785641U CN200920078564U CN201332532Y CN 201332532 Y CN201332532 Y CN 201332532Y CN U2009200785641 U CNU2009200785641 U CN U2009200785641U CN 200920078564 U CN200920078564 U CN 200920078564U CN 201332532 Y CN201332532 Y CN 201332532Y
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Abstract
The utility model relates to a high-frequency electronic frequency converter of high-power parallel auto-excitation type non-polar fluorescent lamp, comprising a filter circuit, a rectifying circuit, a power factor correction circuit, a delay trigger circuit, a power amplifying circuit, a choke coil, an oscillation and output circuit, and a feedback transformer; it is characterized in that the frequency converter also includes a feedback signal parallel pickup circuit having a feedback signal circuit input end and a feedback signal circuit output end; the choke has a choke coil feedback signal pickup end; the filter circuit is connected with the rectifying circuit; the rectifying circuit is connected with the power factor correction circuit which is connected with the delay trigger circuit; the delay trigger circuit is connected with the power amplifying circuit with is connected with the oscillation and output circuit; the choke coil feedback signal pickup end is connected with the feedback signal circuit input end while the feedback signal circuit output end is connected with the feedback transformer which is connected with the power amplifying circuit.
Description
Technical field
The utility model relates to a kind of electric ballast, especially a kind of high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp.
Background technology
The electrodeless lamp auto-excitation type of existing external frequency electronic frequency changer of high (being called the electroless lamp ballasting device again) is used for providing lasting electric current to electrodeless lamp, promptly pass through the power supply of conversion, it is the kit that electrodeless lamp work must be used, when this auto-excitation type electric frequency converter uses in high-power electrodeless lamp (more than the 60W), the problem that power consumption is bigger than normal, temperature rise is higher is arranged, these problems directly influence the job stability of electrodeless lamp frequency converter, and then shorten the useful life of electrodeless lamp.In order to solve this deficiency, the technical staff reduces the temperature of frequency converter by every means in the hope of prolonging the useful life of electrodeless lamp, for example Chinese patent application 200810014822.X number disclosed intelligent heat radiation control device for non-pole lamp rectifier, this device comprises ballast housing, ballast power output magnet ring is housed in the housing, DC electric fan is housed on the ballast housing.The intelligent heat dissipation control circuit comprises inductance coil, it is on power output magnet ring, the voltage that induces forms direct voltage and uses for DC electric fan through rectification, filtering, uses for entire circuit after voltage stabilizing, provides reference voltage for dual operational amplifier again after accurate voltage stabilizing.Thermistor is attached on the power tube of ballast or on the fin of power tube, the temperature sensor signal that detects passes to dual operational amplifier after anti-interference., through amplify, anti-interference, relatively, upset back one tunnel is connected with DC electric fan through drive circuit, control the work of DC electric fan and stop; The positive and negative in-phase input end that is fed to dual operational amplifier in another road.This invention can automatically reduce the working temperature of electroless lamp ballasting device, improved ballast reliability, prolonged its useful life.Though this patent application can reduce the temperature of ballast, but the elements such as electric fan that increase have strengthened power consumption on the contrary and have produced magnetic interference, be unfavorable for electrodeless lamp working stability, and fundamentally do not solve ballast self-heating and power consumption problem bigger than normal, still can not effectively prolong the useful life of electrodeless lamp.Therefore, be badly in need of a kind of power consumption and temperature rise that can effectively reduce frequency-variable electronic device self is provided, and can prolong the product high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp in useful life.
The utility model content
The purpose of this utility model is to improve on the structure of existing electric ballast, a kind of power consumption and temperature rise that can effectively reduce frequency-variable electronic device self is provided, and can prolongs the product high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp in useful life.
High-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp of the present utility model has filter circuit, rectification circuit, power factor correction circuit, delay trigger circuit, power amplification circuit, choking-winding, vibration and output circuit, feedback transformer, described filter circuit has filter circuit input and filter circuit output, described rectification circuit has rectification circuit input end and rectification circuit output end, described power factor correction circuit has power factor correction circuit input and power factor correction circuit output, described delay trigger circuit has power input and delay trigger circuit output, described power amplification circuit has power amplification circuit input and power amplification circuit output, described choking-winding has choking-winding input and choking-winding output, described vibration and output circuit have vibration and output circuit input, described feedback transformer has feedback transformer input and feedback transformer output, it is characterized in that having feedback signal pick-up circuit in parallel, described feedback signal pick-up circuit in parallel has feedback signal pick-up circuit input in parallel and feedback signal pick-up circuit output in parallel, described choking-winding has the parallel connection of choking-winding feedback signal and picks up end, described filter circuit output is connected with rectification circuit input end, described rectification circuit output end is connected with the power factor correction circuit input, described power factor correction circuit output is connected with described delay trigger circuit power input, described delay trigger circuit output is connected with the power amplification circuit input, described power amplification circuit output is connected with vibration and output circuit input, the parallel connection of described choking-winding feedback signal is picked up end and is connected with feedback signal pick-up circuit input in parallel, described feedback signal pick-up circuit output in parallel is connected with the feedback transformer input, and described feedback transformer output is connected with the power amplification circuit input.
The basic design of the utility model high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp is: utilize independent feedback signal pick-up circuit in parallel, feedback signal picked up from major loop move on on the relevant branch road, make that feedback current signal reduces, harmonic wave reduces.Allow feedback transformer and switching tube temperature when high power work obviously reduce.That is to say that place unique in the utility model is the innovation of mode that feedback signal in the former auto-excitation type circuit is picked up.Former mode feedback signal is to pick up to obtain from the major loop of vibration and output circuit, will be when feedback signal is picked up by total current and whole harmonic wave of charge and discharge process, feedback transformer and switching tube temperature when making whole frequency converter high power work are very high, cause former auto-excitation type electric frequency converter power consumption bigger than normal, temperature rise is higher.Mentality of designing of the present utility model is exactly feedback signal to be picked up from major loop move on on the relevant branch road, feedback signal that Here it is pick-up circuit in parallel.Secondary n6 and coil PL, capacitor P c1, capacitor P c2, resistance PR by choking-winding form feedback signal pick-up circuit in parallel, n6 obtains feedback signal from major loop, stop that by PL, Pc1 parallel network most of harmonic wave passes through, when capacitor P c2 arrives n6, feedback current signal reduces, and harmonic wave reduces.Finally make feedback transformer and switching tube temperature when high power work obviously reduce.
Filter circuit described in the utility model can effectively reduce conducted interference and the radiated interference that each harmonic wave deal forms, and has avoided the pollution to electrical network.Rectification circuit of the present utility model can be with the about 190V direct current of output after the filtering of commercial power rectification, this direct current is proofreaied and correct by power factor correction circuit, thereby make the waveform basically identical of input current waveform and input voltage (commutating voltage), current harmonics is significantly reduced, power factor (PF) can be brought up to more than 0.95, has effectively avoided rectifier to reduce and cause the AC side line voltage to produce shortcomings such as distortion easily from electrical network absorbing reactive power, rectification efficiency.
When using device of the present utility model, the vibration of this high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp and output circuit and electrodeless florescent lamp can be coupled outward, external AC power output DC after rectification circuit rectification, filtering is proofreaied and correct to power factor correction circuit, then, the power factor correction circuit output DC is to delay trigger circuit, at this moment, delay trigger circuit produce a trigger impulse add to power amplification circuit and output to the vibration and output circuit.The network charging of vibration and output circuit, feedback signal pick-up circuit in parallel is obtained feedback signal by coupling, make the power amplification circuit conducting, series resonant network produces free harmonic vibration, and in this process, vibration and output circuit are controlled at operating frequency in the 200KHz-300KHz all the time, the feedback transformer circuit feedback signal makes two metal-oxide-semiconductor alternate conduction in the power amplification circuit, keep vibration, and provide enough power in the electrodeless fluorescent fluorescent tube, it is luminous to keep electrodeless florescent lamp.
The coupling unit of above-mentioned vibration and output circuit when work and electrodeless florescent lamp in the utility model can adopt mode such as magnet ring induction coil to export for it provides energy usually.
Safety for circuit arrangement, can also install safety structure additional in the high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp described in the utility model, described safety structure can be served as by existing fuse, protective tube etc., also can be served as by similar structures such as air switches.
Compared with the aforementioned existing similar products, when high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp of the present utility model uses, can effectively reduce the power consumption and the temperature rise of frequency-variable electronic device self in high-power electrodeless lamp, thereby reduce the ratio that damages greatly.This frequency-variable electronic device stable performance, circuit be simple, be easy to large-scale industrial production, with low cost and can effectively prolong electrodeless florescent lamp useful life.
Content of the present utility model further illustrates with the following Examples, but content of the present utility model is not limited only to content related among the embodiment.
Description of drawings
Fig. 1 is the circuit block diagram of high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp among the embodiment.
Fig. 2 is a circuit diagram.
Embodiment
As shown in Figure 1, high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp described in the present embodiment has filter circuit 1, rectification circuit 2, power factor correction circuit 3, delay trigger circuit 4, power amplification circuit 5, choking-winding 6, vibration and output circuit 7, feedback transformer 8, described filter circuit 1 has filter circuit input and filter circuit output, described rectification circuit 2 has rectification circuit input end and rectification circuit output end, described power factor correction circuit 3 has power factor correction circuit input and power factor correction circuit output, described delay trigger circuit 4 has power input and delay trigger circuit output, described power amplification circuit 5 has power amplification circuit input and power amplification circuit output, described choking-winding 6 has choking-winding input and choking-winding output, described vibration and output circuit 7 have vibration and output circuit input, described feedback transformer 8 has feedback transformer input and feedback transformer output, it is characterized in that having feedback signal pick-up circuit 9 in parallel, described feedback signal pick-up circuit 9 in parallel has feedback signal pick-up circuit input in parallel and feedback signal pick-up circuit output in parallel, described choking-winding 6 has the parallel connection of choking-winding feedback signal and picks up end, described filter circuit output is connected with rectification circuit input end, described rectification circuit output end is connected with the power factor correction circuit input, described power factor correction circuit output is connected with described delay trigger circuit power input, described delay trigger circuit output is connected with the power amplification circuit input, described power amplification circuit output is connected with vibration and output circuit input, the parallel connection of described choking-winding feedback signal is picked up end and is connected with feedback signal pick-up circuit input in parallel, described feedback signal pick-up circuit output in parallel is connected with the feedback transformer input, and described feedback transformer output is connected with the power amplification circuit input.
As shown in Figure 2, in the present embodiment, filter circuit is made of protective tube BA, NTC resistance R n, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, inductance coil L1, inductance coil L2 and piezo-resistance Ry.
In the present embodiment, rectification circuit is made of diode D1-D4, capacitor C 5.
In the present embodiment, power factor correction circuit is made of resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10, resistance R 13, capacitor C 6, capacitor C 12, capacitor C 13, capacitor C 14, capacitor C 15, diode D5, diode D12, metal-oxide-semiconductor Tr1, power factor (PF) preconditioning integrated package MC33262, coil n1, coil n2.
In the present embodiment, delay trigger circuit is made of resistance R 11, resistance R 12, capacitor C 7, capacitor C 16, diode D7.
In the present embodiment, power amplification circuit is made of metal-oxide-semiconductor Tr2, metal-oxide-semiconductor Tr3, resistance R 14, resistance R 15, resistance R 16, resistance R 17, capacitor C 17, capacitor C 18, diode D8, diode D9, diode D10, diode D11, capacitor C 11.
In the present embodiment, choking-winding is made of inductance coil L3.
In the present embodiment, vibration and output circuit by capacitor C 10,, inductance coil L4 constitutes.
In the present embodiment, feedback signal pick-up circuit in parallel is made of coil n6, resistance PR, coil PL, capacitor P C1, PC2.
In the present embodiment, feedback transformer is made of coil n3, coil n4, coil n5.
During high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp in using present embodiment, earlier the vibration of this high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp and the magnetic ring coil of output circuit are enclosed within outside the electrodeless fluorescent fluorescent tube, (electrodeless florescent lamp of Shi Yonging is to charge into argon mixture gas and small amount of mercury metallic element in the pipe herein, the high-power electrodeless fluorescent fluorescent tube that inside pipe wall coating three primary colors fluorescent powder is made), the alternating current of outside input is successively through filter circuit, after the power circuit rectification that rectification circuit and power factor correction circuit constitute, produce trigger impulse by delay trigger circuit, circuits for triggering output through being connected with the power amplification circuit input outputs to power amplification circuit, power amplification circuit will transfer to vibration and output circuit through the power amplification circuit output of the electric current after the processing and amplifying through being connected with vibration and output circuit input then, energy after the vibration that the vibration of this moment and output circuit will produce is coupled in the electrodeless florescent lamp, electrodeless florescent lamp is based on the principle of radio frequency induction discharge, in pipe, produce the electrodless discharge plasma, provide enough power to keep discharge by vibration and output circuit, make mercury atom be excited to produce ultraviolet ray excited fluorescent material and send visible light.In this process, vibration and output circuit are controlled at operating frequency in 200KHz～300KHz all the time, and keep vibration, thereby, allow electrodeless florescent lamp work the time does not have stroboscopic, power consumptive province, luminous mass height, power factor (PF) height, conducted interference is low and radiated interference is low for electrodeless florescent lamp provides stable energy source.
Now the operation principle and the process of high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp in the present embodiment are summarized as follows:
External AC power in rectification circuit diode D1-D4 rectification after after capacitor C 5 filtering about 190V direct current of output proofread and correct to the power factor (PF) preconditioning integrated package MC33262 of power factor correction circuit, specifically be the resistance R 10 of the direct current of main circuit output through power factor correction circuit, resistance R 6 and resistance R 5 voltage after partial are sent into the 1st foot of power factor (PF) preconditioning integrated package MC33262, through the 190V direct current of filter circuit and rectification circuit output resistance R 2 through power factor correction circuit, resistance R 3 and resistance R 4 voltage after partial are sent into power factor (PF) preconditioning integrated package MC33262 the 3rd foot, send into the 4th foot of power factor (PF) preconditioning integrated package MC33262 after the switched-current sampled of the metal-oxide-semiconductor Tr1 of power factor correction circuit.Break-make by control metal-oxide-semiconductor Tr1 after the power factor (PF) preconditioning integrated package MC33262 inter-process, thereby make the waveform basically identical of input current waveform (current waveform of coil n1) and input voltage (commutating voltage), current harmonics is significantly reduced, and input power factor can be brought up to more than 0.97.The output of coil n1 in the power factor correction circuit is through diode D12 rectification, output 400V direct current produces the grid that a trigger impulse adds to the metal-oxide-semiconductor Tr3 of power amplification circuit to the delay trigger circuit that resistance R 11, capacitor C 7, resistance R 12, capacitor C 16 and diode D7 form after capacitor C 6 filtering, makes metal-oxide-semiconductor Tr3 conducting and outputs to vibration and output circuit.Direct current is by the shunt-resonant circuit (capacitor C 10 of vibration and output circuit, inductance coil L4), inductance coil L3, capacitor C 11, the D-S utmost point of metal-oxide-semiconductor Tr3 constitutes the loop and gives inductance coil L4, capacitor C 10, the charging of inductance coil L3 network, because the feedback signal that the coil n6 of feedback signal pick-up circuit in parallel obtains is passed through n3, the coupling of n5, make the D-S utmost point conducting of the metal-oxide-semiconductor Tr2 in the power amplification circuit, and to the inductance coil L4 in vibration and the output circuit, capacitor C 10, the discharge of inductance coil L3 network, series resonant network produces free harmonic vibration, inductance coil L4, the electrodeless fluorescent tube of capacitor C 10 and work is controlled at operating frequency in the 200KHz-300KHz, the coil n4 of feedback transformer, coil n5 makes metal-oxide-semiconductor Tr2 and the metal-oxide-semiconductor Tr3 alternate conduction in the power amplification circuit, keep vibration, and enough power is provided in the electrodeless fluorescent fluorescent tube, it is luminous to keep electrodeless florescent lamp.
Claims (1)
1, a kind of high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp, has filter circuit, rectification circuit, power factor correction circuit, delay trigger circuit, power amplification circuit, choking-winding, vibration and output circuit, feedback transformer, described filter circuit has filter circuit input and filter circuit output, described rectification circuit has rectification circuit input end and rectification circuit output end, described power factor correction circuit has power factor correction circuit input and power factor correction circuit output, described delay trigger circuit has power input and delay trigger circuit output, described power amplification circuit has power amplification circuit input and power amplification circuit output, described choking-winding has choking-winding input and choking-winding output, described vibration and output circuit have vibration and output circuit input, described feedback transformer has feedback transformer input and feedback transformer output, it is characterized in that having feedback signal pick-up circuit in parallel, described feedback signal pick-up circuit in parallel has feedback signal pick-up circuit input in parallel and feedback signal pick-up circuit output in parallel, described choking-winding has the parallel connection of choking-winding feedback signal and picks up end, described filter circuit output is connected with rectification circuit input end, described rectification circuit output end is connected with the power factor correction circuit input, described power factor correction circuit output is connected with described delay trigger circuit power input, described delay trigger circuit output is connected with the power amplification circuit input, described power amplification circuit output is connected with vibration and output circuit input, the parallel connection of described choking-winding feedback signal is picked up end and is connected with feedback signal pick-up circuit input in parallel, described feedback signal pick-up circuit output in parallel is connected with the feedback transformer input, and described feedback transformer output is connected with the power amplification circuit input.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200785641U CN201332532Y (en) | 2009-01-08 | 2009-01-08 | High-frequency electronic frequency converter of high-power parallel auto-excitation type non-polar fluorescent lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200785641U CN201332532Y (en) | 2009-01-08 | 2009-01-08 | High-frequency electronic frequency converter of high-power parallel auto-excitation type non-polar fluorescent lamp |
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| CN201332532Y true CN201332532Y (en) | 2009-10-21 |
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| CNU2009200785641U Expired - Fee Related CN201332532Y (en) | 2009-01-08 | 2009-01-08 | High-frequency electronic frequency converter of high-power parallel auto-excitation type non-polar fluorescent lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101466191B (en) * | 2009-01-08 | 2012-07-04 | 王家诚 | High-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101466191B (en) * | 2009-01-08 | 2012-07-04 | 王家诚 | High-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp |
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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: 20091021 Termination date: 20160108 |