基于电荷泵功率因数校正技术的小功率高压钠灯用电子镇流器

本文研究了输入电流连续型电荷泵功率因数校正(CIC-CPPFC)技术在电子镇流器中的应用,采用CIC-CPPEC技术实现的电子镇流器,与传统的双功率级电子镇流器相比,结构简单、电压应力低、功率密度高、成本低。本文成功设计出了一台适合50W高压钠灯用电子镇流器。实验表明,这种单功率级电子镇流器不仅能实现高压钠灯变频软启动,而且能保证在输入电网电压大范围变化时实现恒功率运行。它具有完善的多重保护功能,功率因数大于0.98,THD值小于15%。     

220V／250W恒功率高压钠灯电子镇流器的研究

根据高压钠灯的工作特性及电子镇流器的技术要求,研制成功基于L6574集成芯片的220V/250W恒功率高压钠灯高频电子镇流器。实验表明该电子镇流器工作稳定,无声谐振现象,输入电流谐波、灯电流波峰因数等均符合相关标准。本文分析了其高压点火电路,功率因数校正(PFC)电路,逆变及控制电路,此方案具有性能稳定、高功率因数、恒功率输出特性。     

全电压1000W高压钠灯电子镇流器的设计

电子镇流器本质上是一高频化的供电电源,广泛应用于照明设备中.采用了功率因数校正技术及谐振技术设计出了一种全电压1 000 W高压钠灯电子镇流器.该电子镇流器具有完善的开路、短路及管电压超高保护功能,采用了可变频率驱动电路消除了声频共振现象.实验研究表明,该镇流器在全电压范围内满功率输出时效率均超过90%,工作可靠稳定,...     

高压钠灯电子镇流器的研制

高压钠灯电子镇流器的研制南京三乐电气总公司电光厂程维明，姜飞一、引言如今，一体化高效节能灯到处可见，它是电子镇流器和三基色紧凑型荧光灯管的组合，但很少看到高压钠灯电子镇流器，这是因为高压钠灯的功率较大、触发启动电压较高，即使采用相应功率、高触发电压、...     

高压钠灯电子镇流器的研究

阐述了高压灯气体放电的工作特性，分析了高压钠灯电子镇流器的技术要求和实际电路拓扑，研制成功高功率因数250W高压钠灯电子镇流器，给出了试验结果。     

太阳能高压钠灯高频电子镇流器的研究

介绍了一种低电压供电且以MC68HC908QT2廉价单片机控制和可变频率驱动技术为核心的太阳能高压钠灯电子镇流器。该电子镇流器有电流电压控制环，在双环控制下使其输出恒功率，从而使高压钠灯可靠稳定地工作。     

一种具有自动定时调光功能的路灯用高压钠灯电子镇流器

介绍一种具有自动定时调光功能的路灯用高压钠灯电子镇流器,论述电路的基本工作原理和控制策略,通过单片机控制实现电子镇流器的点火、恒功率、调光和保护控制。然后给出一个额定功率为400W的高压钠灯电子镇流器的实验结果。     

高压钠灯电子镇流器关键技术的研究与实现

根据高压钠灯特性,对电子镇流器关键技术进行研究与改进。该电子镇流器包括有源功率因数校正(APFC)电路、半桥逆变电路和闭环控制电路等。设计中对镇流器各功能模块和系统参数均进行了优化,启动电路采用脉冲变压器启动方式,声谐振抑制技术采用频率调制和相位调制相结合的技术。通过实验验证,实现了电子镇流器的高功率因数、高效率、无声谐振、可调光、稳定可靠等特性,达到了预期目标。     

太阳能光伏照明系统专利摘要

1一种应用在光伏路灯照明系统中的高压钠灯电子镇流器公开号CN1753596摘要:本发明属于光伏发电技术用高压钠灯镇流器技术领域。其特征在于所述镇流器含有:高频镇流电感、高压钠灯启辉电路。当有高频交流方波输入高频镇流电感时,所述启辉电路在直流方波作用下通过控制高频镇流电     

HID灯的控制与驱动电路

根据高压钠灯的电气特点开发出相应的电子镇流器,主电路采用半桥式电荷泵逆变电路.该电路的特点是将功率因数校正与逆变电路融合在一起.控制器采用模拟PI调节器电路与单片机相结合实现灯的恒功率控制和钠灯的启动控制.给出了灯功率为110W, 工作频率为30kHz条件下的实验结果.     

电荷泵PFC在金卤灯电子镇流器中的应用

研究了输入电流连续型电荷泵功率因数校正(ContinuousInputCurrentChargePumpPowerFactorCorrection,简称CIC-CPPFC)技术在超高频金卤灯电子镇流器(ElectronicBallast,简称EB)中的应用。成功设计出一台适合70W金卤灯用EB。实验结果证明,超高频工作法与电荷泵功率因数校正(ChargePumpPowerFactorCorrection,简称CPPFC)技术相结合不仅能有效抑制金卤灯的声谐振问题,而且电路结构简单,成本低,效率高。设计的EB在输入电压大范围变化时具有良好的恒功率控制效果,以及滑频软启动和软开关功能,此外还具有开路、短路和热灯启动等多种保护功能,功率因数大于0.99,THD值小于15%。     

New continuous-input current charge pump power-factor-correctionelectronic ballast

Continuous-input current charge pump power-factor-correction (CIC-CPPFC) electronic ballasts are proposed in this paper. The CPPFC circuit and unity power factor condition using the charge pump concept are derived and analyzed. The average lamp current control with switching frequency modulation was developed so that low crest factor and constant lamp power operation can be achieved. The developed electronic ballast has continuous input current, so that a small line input filter can be used. The proposed CIC-CPPFC electronic ballast was implemented and tested with two 45 W fluorescent lamps. It is shown that the measured line input current harmonics satisfy IEC 1000-3-2 Class C requirements     

高功率因数可调光荧光灯电子镇流器

提出了一种简单易行的晶闸管控制荧光灯调光方法。给出了新型电子镇流器的电路结构,重点讨论了提高其功率因数、功率变换及可变调光的工作机理。该新型电子镇流器通过在调光器中引入电源电压信号处理装置,使电源进线由原来单纯传递电能,转变为包含控制信号,在原有接线方式的基础上实现了亮度可调。样机实验表明,该电子镇流器具有一定的应用价值。     

Single stage self-oscillating HPF electronic ballast

This paper presents a single-stage self-oscillating high-power-factor electronic ballast more suitable for both low power levels (because it operates in discontinuous conduction mode) and low ac mains applications (since it employs an input-doubler rectifier). The electronic ballast is based on a high-frequency dither signal, which shapes the input current in a sinusoidal waveform. In order to reduce the electronic ballast components the self-oscillation technique has been employed. An electronic ballast prototype operating at 25 kHz has been implemented to drive two 40-W straight-type fluorescent lamps from a 127-V utility line. High power factor is achieved even though the electronic ballast drives just one fluorescent lamp. The experimental results demonstrated the electronic ballast operation.     

Power factor-corrected DCM-based electronic ballast

This paper deals with the design, modeling, analysis and simulation of power factor-corrected and low crest factor-based electronic ballast for a compact fluorescent lamp. The proposed electronic ballast is a combination of a buck–boost ac–dc converter as power factor regulator operating in discontinuous conduction mode and a half bridge series resonant inverter, which is used for converting constant dc link voltage into high-frequency ac voltage to drive the fluorescent lamp. The design, modeling and simulation of this topology are performed using MATLAB-Simulink for an 18 W, 220 V, 50 Hz compact fluorescent lamp. With the utilization of proper commutation techniques like zero voltage switching, the overall switching losses are reduced at high operating frequency of 60 kHz. The power quality indices such as displacement power factor, distortion factor, total harmonic distortion of ac mains current, power factor and crest factor are evaluated for proposed electronic ballast, which is found as per IEC-61000-3-2 class C requirements.     

Analysis, design, and experiments of a high-power-factor electronicballast

A charge pump power-factor-correction (CPPFC) power converter is first derived, and its unity power factor condition is then reviewed. A single-stage power-factor-correction electronic ballast using the charge pump concept is analyzed. The design criteria are derived to optimize the electronic ballast based on the steady-state analysis. Constant lamp power operations associated with its control are also discussed. Large signal simulation and experimental results verify the theoretical analysis. It is shown that the designed electronic ballast has 0.995 power factor and 5% total harmonic distortion (THD) with lamp power variation within ±15% when the line input voltage changes ±10%     

An electronic ballast with high power factor and low voltage stress

This paper presents a new configuration for an electronic ballast with high power factor for fluorescent lamps. The proposed ballast consists of the integration of a buck-boost converter, used as an input stage to correct the power factor and regulate the voltage on a dc bus, and a resonant half-bridge inverter to drive the lamp. The buck-boost converter operates at a constant frequency and constant duty cycle in a discontinuous conduction mode during all input cycles.