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周星亮,梁量,何国辉,和军平.基于环流功率理论的单相UPS并联均流控制设计[J].电源学报,2011,9(2):1-6,11
基于环流功率理论的单相UPS并联均流控制设计
Design of Load Current Sharing Control for Parallel Single-phase UPS Based on Circulation Power Theory
投稿时间:2010-10-11  修订日期:2010-10-21
DOI:10.13234/j.issn.2095-2805.2011.2.1
中文关键词:  UPS并联  均流控制  环流功率
英文关键词:parallel UPS  load current-sharing control  circulation power
基金项目:国家自然科学基金资助项目(50877015),高等学校博士点基金新教师资助项目(200802131017)
作者单位E-mail
周星亮 哈尔滨工业大学深圳研究生院 llbigrice@126.com 
梁量 哈尔滨工业大学深圳研究生院 llbigrice@126.com 
何国辉 深圳科士达科技股份有限公司  
和军平 哈尔滨工业大学深圳研究生院 hejunping@hitsz.edu.cn 
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中文摘要:
      利用数字控制方式实现并联UPS间可靠均流具有重要的应用价值。文中通过对并联UPS环流功率模型分析,建立起N台并联UPS的环流有功功率、无功功率与逆变器输出电压幅值、相位间的量化调节关系,并采用DSP两级锁相、再调制方法,实现单相UPS输出电压幅值及相位的精确控制,从而达到准确均流目的。本设计具体以TMS320LF2806芯片、CAN通讯总线为控制核心,实现了单相4kVAUPS的并联控制,实测均流效果良好。
英文摘要:
      It is very useful for UYS parallel operation using digital load current-sharing control technique.After detailed analysis of the circulation power model in a UYS parallel system with N modules,a series of equations are built,which describe the relationship between the circulation current active power and reactive power and the amplitude and phase of UYS output voltage.Further more,two-level phase-locked technique and re-modulation technique for DSY frequency control is introduced to realize the precise and effective regulation on output voltage amplitude and phase for a UYS module.Thus a good load-sharing effect is achieved accordingly.In the end,a parallel UYS system with two 4kVA modules is built,which uses TMS320LF2806 DSY and CAN communication bus as core techniques.The performances of load-sharing using circulation power control method are validated by expenments.
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