| 基于环流功率理论的单相UPS并联均流控制设计 |
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| 引用本文： | 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. |
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| 作者姓名： | 周星亮 梁量 何国辉 和军平 |
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| 作者单位： | 哈尔滨工业大学深圳研究生院,哈尔滨工业大学深圳研究生院,深圳科士达科技股份有限公司,哈尔滨工业大学深圳研究生院 |
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| 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) |
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| 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TMS320LF280...
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| 关 键 词： | UPS并联 均流控制 环流功率 |
| 收稿时间： | 2010/10/11 0:00:00 |
| 修稿时间： | 2010/10/21 0:00:00 |
Design of Load Current Sharing Control for Parallel Single-phase UPS Based on Circulation Power Theory |
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| ZHOU Xing-liang,LIANG Liang,HE Guo-hui and HE Jun-ping.Design of Load Current Sharing Control for Parallel Single-phase UPS Based on Circulation Power Theory[J].Journal of power supply,2011,9(2):1-6,11. |
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| Authors: | ZHOU Xing-liang LIANG Liang HE Guo-hui and HE Jun-ping |
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| Affiliation: | Harbin Institute of Technology Shenzhen Graduate School,Harbin Institute of Technology Shenzhen Graduate School,Shenzhen Kstar Science and Technology Co., Ltd. and Harbin Institute of Technology Shenzhen Graduate School |
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| Abstract: | It is very useful for UPS parallel operation using digital load current-sharing control technique. After detailed analysis of the circulation power model in a UPS 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 UPS output voltage. Further more, two-level phase-locked technique and re-modulation technique for DSP frequency control is introduced to realize the precise and effective regulation on output voltage amplitude and phase for a UPS module. Thus a good load-sharing effect is achieved accordingly. In the end, a parallel UPS system with two 4kVA modules is built, which uses TMS320LF2806 DSP and CAN communication bus as core techniques. The performances of load-sharing using circulation power control method are validated by experiments. |
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| Keywords: | parallel UPS load current-sharing control circulation power |
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