WO2002093985A1 - Ballast electronique utilisable pour des lampes fluorescentes compactes a distorsion harmonique - Google Patents

Ballast electronique utilisable pour des lampes fluorescentes compactes a distorsion harmonique Download PDF

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Publication number
WO2002093985A1
WO2002093985A1 PCT/CN2001/001202 CN0101202W WO02093985A1 WO 2002093985 A1 WO2002093985 A1 WO 2002093985A1 CN 0101202 W CN0101202 W CN 0101202W WO 02093985 A1 WO02093985 A1 WO 02093985A1
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Prior art keywords
circuit
low
frequency
power factor
filter circuit
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PCT/CN2001/001202
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English (en)
French (fr)
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Shuxing Deng
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Shuxing Deng
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Publication of WO2002093985A1 publication Critical patent/WO2002093985A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit 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
    • H05B41/282—Circuit 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

Definitions

  • the invention relates to an electronic circuit device for controlling fluorescent lamps, in particular to a low-harmonic compact energy-saving lamp electronic ballast.
  • the compact energy-saving lamp (CFL) has become the main body of contemporary green lighting projects due to its energy-saving, high-light-efficiency, easy-to-use, and affordable prices.
  • the input current waveform will inevitably be distorted. This distortion will certainly cause pollution to the "power frequency grid” in the form of current harmonics.
  • this pollution reaches a certain amount, the voltage waveform of the power supply line will be distorted, the center line arm, transformer, and cable will be overloaded, and the line electrical equipment and motor will not work properly.
  • the current harmonic content of ordinary electronic energy-saving lamps is more than 120%, and the power factor is only about 0.5. Therefore, no matter from the perspective of ensuring the safe and economic operation of the power grid or protecting electrical equipment and personal safety, the current harmonic content of energy-saving lamps must be strictly limited to reduce the serious harm caused by harmonic pollution.
  • the circuit technical solutions for improving the input power factor and reducing the input current harmonics of electronic ballasts for compact energy-saving lamps (self-ballasted fluorescent lamps) are mainly: two types of circuits: active power factor correction and passive power factor correction.
  • the object of the present invention is to provide a high power factor, and the input current harmonics meet the requirements of the IEC6100-3-2 standard, small size, low cost, high working reliability, especially suitable for small power (5W-30W) self-ballasted fluorescent lamp (compact energy-saving lamp) is a low-harmonic compact energy-saving lamp electronic ballast.
  • the invention has a power input dual-type electromagnetic interference filter circuit 1, an AC DC bridge rectifier circuit 2, a high-frequency oscillating DC ⁇ AC inverter circuit 4, wherein the power input dual ⁇ -type electromagnetic interference filter circuit 1 passes the AC power voltage through It is sent to the AC DC bridge rectifier circuit 2 after filtering out electromagnetic interference. It is also characterized by high and low frequency superimposed passive power factor correction rectifier filter circuit 3 and filament resonance capacitor circuit 5.
  • the AC DC bridge rectifier circuit 2 The AC voltage is converted to a pulsating DC voltage and sent to the high and low frequency superimposed passive power factor correction rectification filter circuit 3, while the filament resonance capacitor circuit 5 feedback outputs a high frequency modulation signal to the high and low frequency superimposed passive power factor correction rectification filter circuit 3, high and low frequency Superimposed passive power factor correction rectification filter circuit 3 Modulates the input signal with high and low frequency modulation and rectifies and filters it and sends it to the high-frequency oscillation DC-AC inverter circuit 4 as the DC working power of the circuit.
  • High-frequency oscillation DC-AC The inverter circuit 4 oscillates at high frequency Frequency modulated signal to the resonant capacitor circuit 5 filament.
  • the present invention having the above-mentioned circuit structure and signal flow is used, its filament resonance capacitor circuit 5 is connected to the filament of a straight tube type or a ⁇ -type or other type of fluorescent lamp tube 6, and the high-frequency oscillation DC-AC inverter circuit 4 The generated high-frequency modulation signal is transmitted to the filament of the fluorescent lamp tube 6 through the filament resonance capacitor circuit 5, so that the fluorescent lamp tube 6 emits light and illuminates, thereby completing the entire process of driving the energy-saving lamp by the electronic ballast of the present invention.
  • the compact energy-saving lamp assembled by using the electronic ballast of the present invention has The following advantages and characteristics: 1 Ensure safe and economic operation of the power grid: As the total harmonic content of the input current is less than 30%, the harmonic content meets the requirements of the "C" lighting equipment harmonic limit specified by the IE C6100-3-2 electromagnetic compatibility standard And the peak current ratio of the lamp current is less than 1.7, so the distortion of the input current waveform is extremely small, no pollution to the power grid, and reduced the risk of fire and accidents.
  • the input power factor is as high as 0.95, and the input current is reduced by 50% compared with general energy saving lamps under the same power and illumination conditions.
  • 3 Basically no electromagnetic interference to electrical equipment: It is especially suitable for high-level applications such as communication, finance, aviation, railway, star hotels, hospitals, precision instrument rooms, computer rooms, receiving and transmitting centers, and government agencies. 4Reduce the damage rate of energy-saving lamps: When ordinary energy-saving lamps are installed and used intensively, the voltage standing wave point (voltage resonance) is extremely easy to form locally due to the serious violation of harmonics. The instantaneous voltage superimposition will cause the energy-saving lamps to burn out. The user and even the manufacturer are often unclear.
  • FIG. 1 is a block diagram of the electrical principle of the present invention
  • FIG. 2 is an embodiment of a specific circuit of the block diagram of FIG. 1.
  • FIG. 2 is an embodiment of a specific circuit of the block diagram of FIG. 1.
  • i-type electromagnetic interference filter Circuit 1 is composed of fuse BX, capacitors CI and C2, and inductors L1 and L2.
  • the AC DC bridge rectifier circuit 2 is composed of diodes D1 to D4.
  • the high and low frequency superimposed passive power factor correction rectifier filter circuit 3 is composed of capacitor C3. Connected to C6 and diode D5.
  • the high-frequency oscillating DC-AC inverter circuit 4 is composed of high-power transistors Q1 and Q2, bidirectional diode DB3, diodes D6 to D10, resistors R1 to R6, capacitors C7 and C8, and oscillation transformer L3 ⁇ L5 and inductor L6 are connected, and the filament resonance capacitor circuit 5 is composed of capacitors C9 and C10.
  • connection relationship between the high-frequency and low-frequency superimposed passive power factor correction rectification filter circuit 3 and other circuits of the present invention is: C3, C4, and D5
  • the common connection ends of the positive poles are electrically connected to the output positive pole of the AC DC bridge rectification circuit 2, C3
  • the common ends of the negative poles of C5, C5 and C6 are electrically connected to the output negative pole of the AC DC bridge rectifier circuit 2; the common ends of the negative pole D5, the positive pole of C6 and the high-frequency oscillation DC-AC inverter circuit 4 R1, R2
  • the common ends of the negative poles of C8, C7, D7 and the collector of Q1 are electrically connected as the positive pole of the DC working power supply of this circuit 4, and the common ends of the negative poles of C3, C5 and C6 are connected to the high-frequency oscillating DC-AC inverter circuit 4
  • the common terminals of C7, D8 positive, R4, D10 positive, and L4 are electrically connected to serve as the negative of the
  • the capacitance of C3, C4, and C5 ranges from 1000Pf to 0.5 yf, and the capacitance of C5 is 1/10 to 1/100 of C4.
  • the capacitance of C6 ranges from 4.7 wf to 100 f, D5. Using high-frequency rectifier diodes.
  • connection relationship between the filament resonance capacitor circuit 5 of the present invention and other circuits is: one end of C10 is electrically connected to the L6 terminal of the high-frequency oscillating DC-AC inverter circuit 4, and one end of C9 is superimposed with high and low frequency passive power.
  • the common ends of C4 and C5 of the factor correction rectification filter circuit 3 are electrically connected.
  • the capacitance of C9 and C 10 ranges from 500Pf-0.05 ⁇ f, and the capacitance of C9 is equal to the capacitance of C10.
  • the relationship between the present invention having the circuit structure shown in FIG. 2 and the filaments of the straight-tube type or U-shaped or other type of fluorescent tube 6 is as follows: the co-connected ends of C 10, L6 and a group of cathode filaments of the fluorescent tube 6 One end is electrically connected, and one end of C9 is electrically connected to the other end of the group of cathode filaments; the other end of C 10 is electrically connected to one end of the other group of cathode filaments of the fluorescent tube 6, and the ends of C9, C4, C5
  • the common connection end is electrically connected to the other end of the other set of cathode filaments.
  • the technical solution of the high- and low-frequency superimposed passive power factor correction rectification filter circuit 3 of the present invention is different from the known passive power factor correction filter circuits such as "flow-by-flow” or "pump".
  • a high-frequency modulation signal of an inverter circuit 4 is fed back to the DC output positive and negative poles of the AC DC bridge rectifier circuit 2 through a circuit composed of C4, C5, and C3, so that the high frequency is superimposed on the low frequency (100HZ or 120HZ)
  • the one-way DC pulsating voltage is then rectified by D5 and filtered by C6 to improve the conduction angle of the diodes D1 ⁇ D4 of AC ⁇ DC bridge rectifier circuit 2, so that the input current waveform approaches or reaches a sine wave, thereby Greatly reduce the input current harmonics of compact energy-saving lamp electronic ballasts.
  • the resonance capacitance of the filament resonance capacitor circuit 5 of the present invention is composed of C9 and C10 crossing the cathode filaments of the fluorescent tube 6 respectively and connected in parallel.
  • the purpose is to adjust the cathode filament current through the fluorescent tube 6 to improve the electrical efficiency of the light and improve the lighting performance. Extend the life of the lamp, the normal working life of the lamp is greater than 8000 hours.

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  • Circuit Arrangements For Discharge Lamps (AREA)
  • Rectifiers (AREA)

Description

一种低谐波紧凑型节能灯电子镇流器
本发明涉及一种用于荧光灯控制的电子电路装置 特别是指一种低谐波紧凑型节能灯电子镇流器
紧凑型节能灯 ( CFL ) 以其节能、 高光效 、 使用方 便 、 价格适宜等优势已成为当代绿色照明工程的主体 但同时由于 "节能灯 " 自身电路原因， 不可避免地将造 成输入电流波形产生畸变， 而这种畸变又必将以电流谐 波的形式对 "工频电网 " 造成污染。 当这种污染达到 定量时将引起供电线路电压波形畸变， 中线发犰、、 变压 器和电缆过载'， 线路用电设备和电动机无法正常工作
至引起火灾。 普通电子节能灯的电流谐波总含里 在 120 %以上， 而功率因数仅 0.5 左右。 因此无论从保 障电网的安全经济运行还是从保护用电设备和人身安全 来看， 都必须严格限制节能灯的电流谐波含量， 以减少 谐波污染造成的严重危害。 目前提高紧凑型节能灯 （ 自 镇流荧光灯） 电子镇流器的输入功率因数和降低输入电 流谐波的电路技术方案主要为： 有源功率因数校正和无 源功率因数校正两类电路。 它们的缺点是， 前者电路结 构复杂、 体积大、 成本高； 而后者， 要么输入电流谐 波 含量高， 仍不符合 IEC6100-3-2 电磁场兼容标准规定的 " C " 类照明设备谐波限值要求， 要么则工作可靠性差， 调试难度大， 难于实用。
有鉴于此， 本发明的 目的， 乃是提供一种能实现高 功率因数， 且输入电流谐波符合 IEC6100-3-2 标准要 求， 体积小、 成本低、 工作可靠性高、 特别是适合小功 率 （ 5W-30W ) 自镇流荧光灯 （紧凑型节能灯） 应用的 一种低谐波紧凑型节能灯电子镇流器。
参见图 1 本发明电原理方框图， 本发明的技术解决 方案如下。 本发明具有电源输入双 型电磁干扰滤波电 路 1、 交流一直流桥 式整流电路 2、 高频振荡直流→交 流逆变器电路 4， 其中电源输入双 π型电磁干扰滤波电 路 1 将交流电源电压经滤除电磁干扰后输送至交流一直 流桥式整流电路 2， 其特征在于， 还具有高低频叠加无 源功率因数校正整流滤波电路 3 和灯丝谐振电容电路 5， 交流一直流桥式整流电路 2 将交流电压转变为脉动 直流电压输送至高低频叠加无源功率因数校正整流滤波 电路 3， 同时灯丝谐振电容电路 5 反馈输出一高频调制 信号给高低频叠加无源功率因数校正整流滤波电路 3， 高低频叠加无源功率因数校正整流滤波电路 3对叠加输 入的信号进行高低频调制并作整流滤波后输送至高频振 荡直流一交流逆变器电路 4 作为该电路的直流工作电 源 高频振荡直流一交流逆变器电路 4 进行高频振荡并 将高频调制信号送给灯丝谐振电容电路 5。 具有上述电 路结构和信号流向的本发明在使用时， 其灯丝谐振电容 电路 5 与直管型或 ϋ 型或其它类型的荧光灯管 6 的灯 丝相连接， 高频振荡直流一交流逆变器电路 4 产生的高 频调制信号经灯丝谐振电容电路 5输送到荧光灯管 6 的 灯丝， 使得荧光灯管 6发光照明， 从而完成本发明电子 镇流器驱动节能灯工作的全过程。
采用本发明电子镇流器组装的紧凑型节能灯具有如 下优点和特点： ①确保电网安全经济运行： 由于其输入 电流谐波总含量小于 30 %， 谐波含量符合 IE C6100-3-2 电磁兼容标准规定的 " C " 类照明设备谐波限值要求， 且灯电流波峰比小于 1.7 , 因此输入电流波形畸变极 小， 对电网无污染， 减少了火灾隐患和意外事故的发生。
②降低无功损耗、 进一步节能： 输入功率因数高达 0.95， 在同等功率和同等照度条件下输入电流比一般节能灯降 低 50 %。 ③对用电设备基本无电磁干扰： 特别适用于通 讯、 金融、 航空、 铁路、 星级宾馆、 医院、 精密仪器室 、 电脑房、 接收与发射中心、 政府首脑机关等高级场所应 用。 ④减少节能灯的成片损坏率： 当普通节能灯集中安 装使用时， 由于谐波严重超标， 在局部极易形成电压驻 波点 （电压共振）， 瞬间电压叠加将造成节能灯成片烧 毁， 用户甚至生产厂家往往不明所以， 笼统归咎于节能 灯质量不好， 实质则是谐波作怪， 而本发明则根本不存 在此类问题。 ⑤保护视 力、 保障身体健康： 工作频率 设计在 40KHZ 以上， 最大限度降低了节能灯的频闪 效应， 达到 "护眼灯 " 的水平， 有效保护了照明工作环 境的安全。 ⑥使用本发明的小功率 （ 5W-30W ) 自镇流 荧光灯 （紧凑型节能灯） 体积小、 成本低、 工作可靠性 下面结合附图和实施例对本发明作出进一步说明。 图 1 为本发明电原理方框图；
图 2为图 1方框图的一种具体电路的实施例。
参见图 1 与图 2。 电源输入双： i 型电磁干扰滤波电 路 1 由保险管 BX、 电容 CI 与 C2 及电感 L1 与 L2 连 接组成， 交流一直流桥式整流电路 2 由二极管 D1 至 D4 连接组成， 高低频叠加无源功率因数校正整流滤波电路 3 由电容 C3 至 C6及二极管 D5连接组成， 高频振荡直 流一交流逆变器电路 4 由大功率三极管 Q1 与 Q2、 双 向二极管 DB3、 二极管 D6 至 D10、 电阻 R1 至 R6、 电 容 C7与 C8、 振荡变压器 L3〜L5及电感 L6连接组成， 灯丝谐振电容电路 5 由电容 C9与 C10组成。
本发明的高低频叠加无源功率因数校正整流滤波电 路 3 与其它电路的连接关系为： C3、 C4 及 D5 正极的 共连端与交流一直流桥式整流电路 2 的输出正极相电连 接， C3、 C5 及 C6 负极的共连端与交流一直流桥式整 流电路 2 的输出负极相电连接； D5 负极、 C6 正极的共 连端与高频振荡直流一交流逆变器电路 4 的 Rl、 R2、 C8、 D7 负极及 Q1 集电极的共连端相电连接， 作为该 电路 4 的直流工作电源的正极， C3、 C5 及 C6 负极的 共连端与高频振荡直流一交流逆变器电路 4 的 C7、 D8 正极、 R4、 D10 正极及 L4 的共连端相电连接， 作为该 电路 4 的直流工作电源的负极。 C3、 C4、 C5 的电容量 取值范围为 1000Pf〜0.5 y f， 且 C5 的电容值为 C4 的 1/10〜1/100， C6 的电容量取值范围为 4 .7 w f〜100 f， D5采用高频整流二极管。
本发明的灯丝谐振电容电路 5 与其它电路的连接关 系为： C10 的一端与高频振荡直流一交流逆变器电路 4 的 L6—端相电连接， C9 的一端与高低频叠加无源功率 因数校正整流滤波电路 3 的 C4、 C5 的共连端相电连接。
C9、 C 10 的电容取值范围为 500Pf-0.05 μ f,且 C9 的电 容量等于 C10 的电容量。
具有图 2 所示电路结构的本发明在与直管型或 U 型或其它类型荧光灯管 6的灯丝相连接的关系为： C 10、 L6 的共连端与荧光灯管 6 的一组阴极灯丝的一端相电 连接， 而 C9 的一端则与该组阴极灯丝的另一端相电连 接； C 10 的另一端与荧光灯管 6 的另一组阴极灯丝的一 端相电连接， 而 C9、 C4、 C5 的共连端则与该另一组阴 极灯丝的另一端相电连接。
本发明的高低频叠加无源功率因数校正整流滤波电 路 3 的技术方案不同于公知的 "逐流式 " 或 "泵式 " 等 无源功率因数校正滤波电路， 其工作过程是将高频振荡 直流一逆变器电路 4 的高频调制信号， 经 C4、 C5、 C3 构成的 型电路反馈至交流一直流桥式整流电路 2 的直 流输出正、 负极， 使高频叠加在低频 （ 100HZ或 120HZ ) 单向直流脉动电压上，然后经 D5 整流输出至 C6 进行滤 波，以此提高交流→直流桥式整流电路 2的二极管 D 1〜D4 的导通角，使得输入电流波形接近或达到正弦波，从而大 大降低紧凑型节能灯电子镇流器的输入电流谐波。
本发明的灯丝谐振电容电路 5 的谐振电容由 C9、 C 10 分别交叉通过荧光灯管 6 的阴极灯丝后并联组成， 目 的是调整通过荧光灯管 6 的阴极灯丝电流，提高灯光 电效率，改善启辉性能，延长灯管寿命，灯管正常工作寿命 大于 8000小时。

Claims

权 利 要 求
1、 一种低谐波紧凑型节能灯电子镇流器，具有电源 输入双 型电磁干扰滤波电路 （ 1)、 交流一直流桥 式 整流电路 （ 2)、 高频振荡直流一交流逆变器电路 （ 4)， 其中电源输入双 π型电磁干扰滤波电路 （ 1 ) 将交流电 源电压经滤除电磁干扰后输送至交流一直流桥式整流电 路 （ 2) ，其特征在于，还具有高低频叠加无源功率因数 校正整流滤波电路 （ 3 ) 和灯丝谐振电容电路 （ 5 )， 交 流一直流桥式整流电路 （ 2) 将交流电压转变为脉动直 流电压输送至高低频叠加无源功率因数校正整流滤波电 路 （ 3 ) ，同时灯丝谐振电容电路 （ 5 ) 反馈输出一高频 调制信号给高低叠加无源功率因数校正整流滤波电路 ( 3) ，高低频叠加无源功率因数校正整流滤波电路 （ 3) 对叠加输入的信号进行高低频调制并作整流滤波后输送 至高频振荡直流→交流逆变器电路（4)作为该电路的直 流工作电源，高频振荡直流一交流逆变器电路（4)进行高 频振荡并将高频调制信号送给灯丝谐振电容电路 （ 5 )。
2、 根据权利要求 1 所述的一种低谐波紧凑型节能 灯电子镇流器， 其特征在于：
Α) 电源输入双 π型电磁干扰滤波电路 （ 1) 由保险 管 ΒΧ、 电容 C1 与 C2 及电感 L1 与 L2 连接组成， 交 流一直流桥式整流电路 （2) 由二极管 D1 至 D4 连接组 成， 高低频叠加无源功率因数校正整流滤电路 （ 3) 由 电容 C3 至 C6及二极管 D5连接组成， 高频振荡直流一 交流逆变器电路 （4) 由大功率三极管 Q1 与 Q2、 双向 二极管 DB3、 二极管 D6至 D10、 电阻 Rl 至 R6、 电容 C7 与 C8、 振荡变压器 L3〜L5及电感 L6连接组成， 灯 丝谐振电容电路 （5) 由电容 C9与 C10组成；
B) 高低频叠加无源功率因数校正整流滤波电路
(3) 与其它电路的连接关系为： C3、 C4 及 D5 正极的 共连端与交流一直流桥式整流电路 （ 2) 的输出正极相 电连接， C3、 C5 及 C6 负极的共连端与交流一直流桥 式整流电路 （ 2) 的输出负极相电连接； D5 负极、 C6 正极的共连端与高频振荡直流一交流逆变器电路 （ 4) 的 Rl、 R2、 C8、 D7 负极及 Q1 集电极的共连端相电连 接， 作为该电路 （ 4) 的直流工作电源的正极， C3、 C5 及 C6 负极的共连端与高频振荡直流一交流逆变器电路
( 4) 的 C7、 D8 正极、 R4、 D10 正极及 L4 的共连端 相电连接， 作为该电路 （4) 的直流工作电源的负极；
C) 灯丝谐振电容电路 （ 5 ) 与其它电路的连接关 系为： C10 的一端与高频振荡直流一交流逆变器电路
( 4) 的 L6 —端相电连接， C9 的一端与高低频叠加无 源功率因数校正整流滤波电路 （ 3) 的 C4、 C5 的共连 端相电连接。
3、 根据权利要求 2 所述的一种低谐波紧凑型节能 灯电子镇流器， 其特征在于， C3、 C4、 C5 的电容量取 值范围为 1000Pf〜0.5 μ f， 且 C5 的 电容值为 C4 的 1/10-1/100, C6 的电容量取值范围为 4 .7μ ί~100μ ί; C9、 CIO 的电容取值范围为 500 Ρί-0.05μ f，且 C9 的电 容量等于 C10 的电容量。
PCT/CN2001/001202 2001-05-16 2001-07-25 Ballast electronique utilisable pour des lampes fluorescentes compactes a distorsion harmonique WO2002093985A1 (fr)

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