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首页>《中国测试》期刊>本期导读>等离子清洗用谐振电源混合调制技术研究

等离子清洗用谐振电源混合调制技术研究

206    2019-04-02

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作者:薛家祥, 丁度焓

作者单位:华南理工大学机械与汽车工程学院, 广东 广州 510640


关键词:电源控制系统;等离子清洗;混合调制;谐振


摘要:

针对现有等离子体放电电源及其控制系统低效率和高成本的缺点,该文以串联谐振型高频高压电源为研究对象,对不同的控制模式进行研究,提出基于PWM-PFM混合调制的功率跟踪控制策略。同时,对感性和容性两种控制模式进行对比,根据IGBT的关断特点和工作频率,提出高功率欠谐振和低功率过谐振的工作模式,解决等离子清洗用电源在高频率下功率因数低、开关损耗大的问题。实验结果表明:混合调制策略能够有效降低IGBT的损耗,使整机效率提高0.65%~5.51%;在相同工况下,将设备的调功范围从600~950 W提升到550~1 000 W,使得等离子清洗机的清洗对象更为丰富,更容易推广。


Research on hybrid modulation technology of resonant power supply for plasma cleaning
XUE Jiaxiang, DING Duhan
School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China
Abstract: In order to solve the problem of low efficiency and high cost of the current plasma discharge power supply and its control system, this subject takes series resonant high frequency and high voltage power supply as the research object, studies the different control modes, presents a power tracking control strategy based on PWM-PFM hybrid modulation. At the same time, the inductive control mode and capacitive control mode are compared. According to the switching characteristics and working frequency of IGBT, the working mode of high power below resonant and low power over resonance is proposed, which solves the problem of low power factor and high switch stress of power supply for plasma cleaning at high frequency. The experimental results show that the mixed modulation strategy can effectively reduce the loss of IGBT and improve the efficiency of the whole machine by 0.65% to 5.51%. In the same working condition, the power adjustment range of the equipment is raised from 600-950 W to 550-1 000 W, which makes the cleaning objects of plasma cleaning machine more abundant and easier to spread.
Keywords: power control system;plasma cleaning;hybrid modulation;resonance
2019, 45(3):121-126  收稿日期: 2018-04-14;收到修改稿日期: 2018-05-26
基金项目: 福建省自然科学基金项目(2018J01541);2015东莞市引进第三批创新科研团队项目(2017360004004);广州市南沙区科技计划项目(2016CX010,2017CX009);广东省交通厅科技项目(科技-2017-02-041)
作者简介: 薛家祥(1963-),男,江苏徐州市人,教授,博导,主要从事光伏离网、并网逆变器及其分布式发电系统、数字化开关电源及智能控制的研究
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