KR970018898A - Constant voltage circuit and lamp driving device - Google Patents

Constant voltage circuit and lamp driving device Download PDF

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Publication number
KR970018898A
KR970018898A KR1019970001059A KR19970001059A KR970018898A KR 970018898 A KR970018898 A KR 970018898A KR 1019970001059 A KR1019970001059 A KR 1019970001059A KR 19970001059 A KR19970001059 A KR 19970001059A KR 970018898 A KR970018898 A KR 970018898A
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South Korea
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voltage
signal
full
coil
outputting
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KR1019970001059A
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Korean (ko)
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KR100213942B1 (en
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양승창
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양승창
주식회사 선호전자통신
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14Circuit arrangements
    • H05B41/26Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/2806Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without electrodes in the vessel, e.g. surface discharge lamps, electrodeless discharge lamps
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/42Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14Circuit arrangements
    • H05B41/26Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/285Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2851Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2853Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal power supply conditions

Abstract

본 발명은 교류입력전압을 수신하여 안정된 직류전압으로 출력하고 높은 역률을 얻을 수 있는 정전압회로 및 정전압회로를 사용하여 무전극램프를 구동하는 램프구동장치에 관한 것이다. 교류입력전원(Vin)을 수신하여 이를 전파정류하여 전파정류신호(Vd)를 출력하는 전파정류기(11), 전파정류신호(Vd)를 수신하여 교류입력전원(Vin)의 전압이 가변되더라도 항상 동일한 고전압을 갖는 제1, 제2직류전압(Vdcl, Vdcl2)을 출력하는 정전압회로(30), 고주파신호(Fh)를 출력하는 고주파발생부(20) 및 유도코일(L0)을 가진 무전극램프(13)의 시동시에는 무전극램프(13)의 시동전압 이상의 제2직류전압(Vdc2)과 고주파신호(Fh)를 유도코일(L0) 양단에 인가되어 무전극램프(13)를 시동시키고 시동후에는 무전극램프(13)의 임피던스가 변하여 무전극램프(13)의 정격전력에 의한 안전점등을 제어하는 인버터(12)로 구성된다. 따라서 교류입력전원이 가변되더라도 항상 안정된 직류전압을 출력하고, 역률을 거의 1로 할 수 있고, 전고주파 왜곡을 감소시킬 수 있으며, 무전극램프의 점등시 램프의 밝기가 변화되지 않고 전력 효율을 극대화 시킬 수 있다.The present invention relates to a lamp driving apparatus for driving an electrodeless lamp using a constant voltage circuit and a constant voltage circuit that receives an AC input voltage, outputs a stable DC voltage, and obtains a high power factor. A full-wave rectifier 11 that receives the AC input power Vin and full-wave rectifies it to output the full-wave rectified signal Vd, and receives the full-wave rectified signal Vd and is always the same even if the voltage of the AC input power Vin varies. An electrodeless lamp having a constant voltage circuit 30 for outputting first and second DC voltages Vdcl and Vdcl2 having a high voltage, a high frequency generator 20 for outputting a high frequency signal Fh, and an induction coil L0. At the start of 13), the second DC voltage Vdc2 and the high frequency signal Fh above the starting voltage of the electrodeless lamp 13 are applied to both ends of the induction coil L0 to start the electrodeless lamp 13, and after starting Is composed of an inverter 12 for controlling the safety lighting by the rated power of the electrodeless lamp 13 by changing the impedance of the electrodeless lamp 13. Therefore, even if the AC input power is variable, it always outputs a stable DC voltage, the power factor can be set to almost 1, the total frequency distortion can be reduced, and the brightness of the lamp does not change when the electrodeless lamp is turned on, maximizing power efficiency. You can.

Description

정전압회로 및 램프구동장치Constant voltage circuit and lamp driving device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

도3은 본 발명의 정전압회로를 사용한 무전극램프 구동장치의 블럭도.3 is a block diagram of an electrodeless lamp driving apparatus using the constant voltage circuit of the present invention.

Claims (5)

교류입력전원을 수신하여 안정된 직류전압을 출력하는 정전압회로에 있어서, 상기의 교류입력전원을 수신하여 이를 전파정류하여 전파정류신호를 출력하는 전파정류기; 코일 및 스위칭수단으로 구성되며, 상기의 코일의 한단자는 상기의 전파정류신호와 연결되어 스위칭제어신호에 의하여 상기의 스위칭수단은 온 또는 오프되며, 상기의 스위칭수단이 온되면 상기의 코일에 상기의 전파정류신호의 전압, 스위칭수단의 온 시간 및 상기의 스위칭제어신호의 주파수에 비례하는 에너지를 저장하고, 상기의 스위칭수단이 오프되면 상기의 코일에 저장된 에너지를 방출하는 승압수단; 상기의 코일에서 방출된 에너지에 의하여 상기의 교류입력전원의 실효치 보다 고전압을 갖는 제1직류전압 및 상기의 제1직류전압보다 낮은 제2직류전압을 출력하는 필터수단; 제1저항 및 제2저항으로 구성되며, 상기의 제1저항의 한 단자는 상기의 제1직류전압과 연결되고 상기의 제1저항의 다른 단자는 상기의 제2저항의 한 단자와 상호 연결되어 제1전압을 출력하며 상기의 제2저항의 다른 단자는 접지전압에 연결된 분배수단; 기준전압 및 상기의 제1전압을 수신하여 상기의 제1전압이 변화되면 그 변화되는 양에 따른 편차신호를 출력하는 편차발생수단; 상기의 전파정류신호를 수신하여 상기의 전파정류신호를 제1클럭신호에 동기시켜 샘플링하여 램프신호를 출력하는 램프발생수단; 및 상기의 램프신호와 편차신호를 비교하여 상기의 편차신호에 따라 듀티가 상이하며 상기의 제1클럭신호와 동일한 주파수를 갖는 스위칭제어신호를 출력하는 비교수단을 구비한 것을 특징으로 하는 정전압회로.A constant voltage circuit for receiving an AC input power and outputting a stable DC voltage, the constant voltage circuit comprising: a full-wave rectifier for receiving the AC input power and full-wave rectifying it to output a full-wave rectified signal; A coil and a switching means, one terminal of the coil is connected to the full-wave rectified signal, the switching means is turned on or off by a switching control signal, when the switching means is turned on the coil Boosting means for storing energy proportional to the voltage of the full-wave rectified signal, the on time of the switching means, and the frequency of the switching control signal, and releasing energy stored in the coil when the switching means is turned off; Filter means for outputting a first DC voltage having a higher voltage than the effective value of the AC input power and a second DC voltage lower than the first DC voltage by energy emitted from the coil; A first resistor and a second resistor, wherein one terminal of the first resistor is connected to the first DC voltage and the other terminal of the first resistor is interconnected to one terminal of the second resistor. A distributing means for outputting a first voltage and the other terminal of the second resistor connected to a ground voltage; Deviation generating means for receiving a reference voltage and the first voltage and outputting a deviation signal according to the amount of change when the first voltage is changed; Ramp generation means for receiving the full wave rectified signal and sampling the full wave rectified signal in synchronization with a first clock signal to output a ramp signal; And comparing means for comparing the ramp signal with the deviation signal and outputting a switching control signal having a different duty according to the deviation signal and having the same frequency as the first clock signal. 제1항에 있어서, 상기의 스위칭수단은 게이트, 드레인, 소스를 갖는 모스트랜지스터로 구성되며, 상기의 게이트는 상기의 스위칭제어신호와 연결되고, 상기의 드레인은 상기의 코일의 다른 단자와 연결되고, 소스는 접지전압과 연결된 것을 특징으로 하는 정전압회로.The switching device of claim 1, wherein the switching means comprises a MOS transistor having a gate, a drain, and a source, wherein the gate is connected to the switching control signal, and the drain is connected to the other terminal of the coil. , The source is a constant voltage circuit, characterized in that connected to the ground voltage. 유도코일을 가진 무전극램프의 시동시에는 상기의 무전극램프의 시동전압 이상의 고전압과 고주파신호를 유도코일 양단에 인가되어 상기의 무전극램프를 시동시키고 시동후에는 상기의 무전극램프의 임피던스가 변하여 상기의 무전극램프이 정격전력에 의한 안전점들을 제어하는 램프구동장치에 있어서, 교류입력전원을 수신하여 이를 전파정류하여 전파정류신호를 출력하는 전파 정류기; 상기의 전파정류신호를 수신하여 상기의 교류입력전원의 전압이 가변되더라도 항상 동일한 고전압을 갖는 제1, 제2직류전압을 출력하는 정전압수단; 및 상기의 고주파신호를 출력하는 고주파발생수단을 구비한 것을 특징으로 하는 램프구동장치.When the electrodeless lamp with the induction coil is started, a high voltage and a high frequency signal above the starting voltage of the electrodeless lamp are applied to both ends of the induction coil to start the electrodeless lamp, and after the start, the impedance of the electrodeless lamp is increased. Claims [1] A lamp driving apparatus in which the electrodeless lamp is controlled to control safety points by rated power, the lamp driving apparatus comprising: a full-wave rectifier for receiving an AC input power and full-wave rectifying it to output a full-wave rectified signal; Constant voltage means for receiving the full-wave rectified signal and outputting first and second direct current voltages having the same high voltage at all times even if the voltage of the AC input power is varied; And a high frequency generating means for outputting the high frequency signal. 제3항에 있어서, 상기의 정전압수단은 코일 및 스위칭수단으로 구성되며, 상기의 코일의 한 단자는 상기의 전파정류신호와 연결되어 스위칭제어신호에 의하여 상기의 스위칭수단은 온 또는 오프되며, 상기의 스위칭수단이 온되면 상기의 코일에 상기의 전파정류신호의 전압, 스위칭수단의 온 시간 및 상기의 스위칭제어신호의 주파수에 비례하는 에너지를 저장하고, 상기의 스위칭수단이 오프되면 상기의 코일에 저장된 에너지를 방출하는 승압수단; 상기의 코일에서 방출된 에너지에 의하여 상기의 교류입력전원의 실효치 보다 고전압을 갖는 제1직류전압 및 상기의 제1직류전압보다 낮은 제2직류전압을 출력하는 필터수단; 제1저항 및 제2저항으로 구성되며, 상기의 제1저항의 한 단자는 상기의 제1직류전압과 연결되고 상기의 제1저항의 다른 단자는 상기의 제2저항의 한 단자와 상호 연결되어 제1전압을 출력하며 상기의 제2저항의 다른 단자는 접지전압에 연결된 분배수단; 기준전압 및 제1전압을 수신하여 제1전압이 변화되면 그 변화되는 양에 따른 편차신호를 출력하는 편차발생수단; 상기의 전파전류신호를 수신하여 상기의 전파전류신호를 제1클럭신호에 동기시켜 샘플링하여 램프신호를 출력하는 램프발생수단; 및 상기의 램프신호와 편차신호를 비교하여 상기의 편차신호에 따라 듀티가 상이하며 상기의 제1클럭신호와 동일한 주파수를 갖는 스위칭제어신호를 출력하는 비교수단을 구비한 것을 특징으로 하는 램프구동장치.According to claim 3, wherein the constant voltage means is composed of a coil and a switching means, one terminal of the coil is connected to the full-wave rectified signal so that the switching means is turned on or off by a switching control signal, When the switching means is turned on, the coil stores energy proportional to the voltage of the full-wave rectified signal, the on time of the switching means, and the frequency of the switching control signal, and when the switching means is turned off, the coil is stored in the coil. Boosting means for releasing stored energy; Filter means for outputting a first DC voltage having a higher voltage than the effective value of the AC input power and a second DC voltage lower than the first DC voltage by energy emitted from the coil; A first resistor and a second resistor, wherein one terminal of the first resistor is connected to the first DC voltage and the other terminal of the first resistor is interconnected to one terminal of the second resistor. A distributing means for outputting a first voltage and the other terminal of the second resistor connected to a ground voltage; Deviation generating means for receiving the reference voltage and the first voltage and outputting a deviation signal according to the amount of change when the first voltage is changed; Ramp generation means for receiving the radio wave current signal and sampling the radio wave current signal in synchronization with a first clock signal to output a ramp signal; And a comparing means for comparing the ramp signal with the deviation signal and outputting a switching control signal having a different duty according to the deviation signal and having the same frequency as the first clock signal. . 제3항에 있어서, 상기의 고주파발생수단은 고주파로 발진하는 발진수단; 상기의 발진수단의 출력을 수신하여 이를 분주시켜 제1분주클럭신호 및 상기의 제1분주클럭신호를 보수화한 제2분주클럭신호를 출력하는 분주수단; 상기의 제1, 제2분주클럭신호들을 수신하여 이를 증폭시켜 제1, 제2구동심호를 출력하는 증폭수단; 게이트, 드레인, 소스를 가지며, 상기의 게이트는 상기의 제1구동신호와 연결되고, 상기의 드레인은 상기의 제1직류전압과 연결되고, 상기의 소스는 고주파신호를 출력하는 제1모스트랜지스터; 및 게이트, 드레인, 소스를 가지며, 상기의 게이트는 상기의 제2구동신호와 연결되고, 상기의 드레인은 상기의 제1모스트랜지스터의 소스와 연결되고, 상기의 소스는 전지전압에 연결된 제2모스트랜지스터를 구비한 것을 특징으로 하는 램프구동장치.4. The apparatus of claim 3, wherein the high frequency generating means comprises: oscillating means for oscillating at high frequency; A division means for receiving the output of the oscillation means and dividing it to output a first division clock signal and a second division clock signal that is complementary to the first division clock signal; Amplifying means for receiving the first and second divided clock signals and amplifying the first and second divided clock signals to output first and second driving symbols; A first MOS transistor having a gate, a drain, and a source, wherein the gate is connected to the first driving signal, the drain is connected to the first DC voltage, and the source is a first MOS transistor configured to output a high frequency signal; And a gate, a drain, and a source, wherein the gate is connected to the second driving signal, the drain is connected to the source of the first MOS transistor, and the source is connected to a battery voltage. A lamp driving apparatus comprising a transistor. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019970001059A 1997-01-16 1997-01-16 Lamp driving device KR100213942B1 (en)

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KR100213942B1 KR100213942B1 (en) 1999-08-02

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