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分布式发电系统并网逆变器输出功率的自适应控制
引用本文:焦晓红,李超. 分布式发电系统并网逆变器输出功率的自适应控制[J]. 燕山大学学报, 2014, 0(2): 163-167,174
作者姓名:焦晓红  李超
作者单位:燕山大学电气工程学院,河北秦皇岛066004
基金项目:国家自然科学基金资助项目(61304025);高等学校博士学科点博导类科研基金资助项目(20111333110007)
摘    要:针对分布式发电系统中三相电压源型PWM并网逆变器控制问题,考虑滤波电感及其寄生电阻在实际中会发生不确定变化的情况以及外部干扰的存在,提出了并网逆变器输出功率的自适应控制方案,通过控制逆变器输出电流实现对输出功率有功和无功分量的解耦控制,实现了并网系统单位功率因数运行,同时保证直流母线电压的平稳。理论分析和仿真结果证明了所采取的控制策略的可行性和有效性。

关 键 词:分布式发电系统  并网逆变器  自适应控制

Output power adaptive control of grid-connected inverter in distributed generation system
JIAO Xiao-hong,LI Chao. Output power adaptive control of grid-connected inverter in distributed generation system[J]. Journal of Yanshan University, 2014, 0(2): 163-167,174
Authors:JIAO Xiao-hong  LI Chao
Affiliation:(College of Electrical Engineering, YanshanUniversity, Qinhuangdao, Hebei 066004, China)
Abstract:In this paper, the control problem of three-phase grid-connected PWM inverter in distributed generation system is in- vestigated. Considering the uncertain changes in the filter inductance and its parasitic resistance, an adaptive power control strategy is proposed. Decoupling control of active and reactive components of the inverter output power is achieved through the regulation of inverter output current, thus the power factor of inverter could achieve one and the dc bus voltage maintain steady at the same time. Both theoretical analysis and simulation results show the feasibility and effectiveness of the adopted control strategy.
Keywords:distributed generation system  grid-connected inverter  adaptive control
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