HID灯电子镇流器的组合参数微扰调制  

Combined Modulation for HID Electronic Ballast with Small Parameter Perturbation

作　　者：程为彬[1] 徐培凯[1] 钟彦儒[2] 

机构地区：[1]西安石油大学,陕西西安710065 [2]西安理工大学,陕西西安710048

出　　处：《电力电子技术》2007年第10期39-41,共3页Power Electronics

摘　　要：脉冲宽度调制输出中含有固定频率、固定幅度的谐波成分,是高强度气体放电(High Intensity Discharge,简称HID)灯电子镇流器中产生声谐振的能量源。在分析脉宽调制(PWM)频谱的基础上,采用参数微扰法,同时对驱动占空比和电压幅值进行微扰调制,将谐波频谱分散得更宽,使得谐波幅值非线性变化,以减小各谐波分量的峰值和平均值,并给出了实验测试结果。The output of pulse width modulation （PWM） includes harmonics with invariable frequencies and invariable magnitudes,which are the sources of acoustic resonance in electronic ballast for high intensity discharge lamp.Based on the spectrum analysis of PWM,using small parametric perturbation,combined modulations were applied to the driving frequency and the voltage magnitude at the same time,and to make the frequency spectrum spreading broader,the harmonics＇magnitudes changing nonlinearized and to reduce the peak magnitudes and the average magnitudes of various harmonics.Also the exoerimental results are given.

关 键 词：镇流器 脉宽调制 谐波/参数微扰 高强度气体放电 

分 类 号：TM923.61[电气工程—电力电子与电力传动] TN787[电子电信—电路与系统]