SPWM控制高压电源在臭氧发生器上的应用特性  

Study on the characteristics of SPWM controlled high voltage power supply in ozone generator

作　　者：陈颖 CHEN Ying(Fujian Longking Co.,Ltd.,Longyan 364000,China)

机构地区：[1]福建龙净环保股份有限公司,福建龙岩364000

出　　处：《南昌大学学报（工科版）》2021年第3期269-275,共7页Journal of Nanchang University(Engineering & Technology)

基　　金：国家自然科学基金资助项目(51867018);江西省主要学科学术和技术带头人培养计划-领军人才项目(20204BCJ22016)。

摘　　要：商用大型臭氧发生器主要采用脉冲宽度调制(PWM)控制的中高频电源。将广泛应用于电除尘器领域的正弦脉宽调制(SPWM)控制中高频电源引入臭氧发生领域,系统调查各重要参数的影响并确定最佳工作状态,旨在消除与抑制谐波,提高臭氧发生效率。研究表明实验范围内气体流量和气体压力的增大能提高臭氧产率,峰值电压和放电频率反之;提高峰值电压和在恒定峰值电压下提高放电频率有利于提高臭氧质量浓度,恒定放电功率时提高放电频率不利于提高臭氧质量浓度;各参数对臭氧产量的影响与对臭氧质量浓度的的影响类似,但气体流量的增大能提高臭氧产量。此外,载波个数对臭氧发生特性并无显著影响。实验获得最大臭氧产率高达187.2 g·kW^(-1)·h^(-1),表明SPWM控制绝缘栅双极型晶体管(IGBT)中高频电源是一种较好的大型臭氧发生器电源,且可通过谐振频率寻优确定臭氧发生器最佳运行工况。Large commercial ozone generators mainly use the PWM controlled medium and high frequency power supply.In this article,the SPWM controlled power supply widely used in the field of electrostatic precipitator was introduced into the field of ozone generation.In order to suppress or even eliminate harmonics and improve the ozone generation efficiency,the influence of various important parameters was systematically investigated and the optimal working state was determined.The experiment results showed that the increase of gas flow rate and gas pressure within the experimental range improved the ozone production rate,while the peak voltage and discharge frequency did the opposite.Increasing the peak voltage or increasing the discharge frequency under the constant peak voltage helped improve ozone concentration,whereas increasing the discharge frequency under the constant discharge power was not conducive to the increase of ozone concentration.The effects of all parameters on ozone production were similar to those on ozone concentration,except that the increase of the gas flow rate can improve ozone production.In addition,the number of carriers has no significant effect on ozone generation.In the experiment,the maximum ozone generation rate was up to 187.2 g·kW^(-1)·h^(-1),indicating that the SPWM controlled IGBT medium and high frequency power supply was an ideal power supply for large ozone generators,and the optimal operation condition of ozone generators can be determined by resonance frequency optimization.

关 键 词：臭氧发生器 正弦脉宽调制 谐振频率 电源 载波 

分 类 号：TM832[电气工程—高电压与绝缘技术]