| 逆变器并联系统直流环流检测与抑制方法 |
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| 作者姓名： | 陈良亮 |
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| 作者单位： | 南京航空航天大学航空电源航空科技重点实验室，中国南京210016 |
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| 基金项目： | 国家自然科学基金 (5 0 3 3 70 3 0 )资助项目，航空科学基金 (0 1 F5 2 0 3 2 )资助项目~~ |
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| 摘 要： | 运算放大器的零点漂移、逆变桥功率开关管的特性不一致等原因会使逆变器输出交流电压中含有直流分量。对于无输出隔离变压器的逆变器并联系统，各模块输出电压直流分量不一致会在模块间产生较大的直流环流。针对这一问题，本研究了逆变器并联系统直流环流检测和抑制方法，通过对逆变器基准正弦波直流分量的高精度数字调节，相应调节逆变器输出电压直流分量以抑制直流环流。试验结果证明，本的直流环流检测与抑制方法对逆变器并联系统直流环流有较好的抑制效果。
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| 关 键 词： | 逆变器并联系统 直流环流 检测 抑制方法 数字调节 |
DC LOOP-CURRENT DETECTING AND RESTRAINING METHODS FOR PARALLEL INVERTER SYSTEM |
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| Authors: | CHEN Liang-liang XIAO Lan YAN Yang-guang |
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| Institution: | (1Dept. of Animal Sciences, Zhanjiang Ocean University, Zhanjiang, Guangdong, 524088, China;
2Dept. of Police Dog Sci-Tech, China Criminal Police College, Shenyang, Liaoning, 110034, China;
3College of Food Science, Zhanjiang Ocean University, Zhanjiang |
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| Abstract: | Polychlorinated biphenyls (PCBs) fall into the category of halogenated aromatic compounds (HACs) or dioxin-like compounds (DLCs) and are highly lipophilic environmental contaminants. Metabolism of DLCs generally involves monooxygenase enzymes of the CYP 1A family in which CYP 1A2 specifically exists in hepatocytes and is mainly responsible for much more toxic reactions of xenobiotics. In this work, we have examined the role of numerous PCBs as inhibitors of the demethylation of 7-methoxyresorufin, a process that is selectively catalyzed by CYP1A2. 2,3,7,8-Tetrachlorobenzo-p-dioxin (TCDD), 3,3?4,4?tetrachlorobiphenyl (PCB 77) and 3,3?4,4?5-pentachlorobiphenyl (PCB 126) were found to be the strongest inhibitors of methoxyresorufin-O-demethylase (MROD) activity, thus accounting for the high ability of hepatic tissue to selectively sequester these compounds. |
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| Keywords: | DC loop-current detect digital adjustment parallel inverter |
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