| 引用本文: | 王兴贵,刘正英.基于载波变幅移相调制方法的串联型微网功率平衡控制[J].电力系统保护与控制,2015,43(13):38-44.[点击复制] |
| WANG Xinggui,LIU Zhengying.Series micro-grid power balance control based on carrier amplitude variation and phase shift modulation method[J].Power System Protection and Control,2015,43(13):38-44[点击复制] |
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| 摘要: |
| 针对普通微网中输出电压谐波含量大、波形不理想等问题，研究一种将光伏、风力等微源经逆变器串联形成的微网系统。重点分析和研究了载波变幅移相调制方法下系统输出电压特性及串联型微网功率平衡控制。首先对系统结构进行简要说明；其次分析了载波变幅移相调制方法，推导了系统输出电压的傅里叶表达式，并基于此对系统电压特性进行分析；最后以三微源串联微网为例进行Matlab/Simulink仿真分析，结果验证了该控制方法的有效性。 |
| 关键词: 串联 微网 载波变幅移相 功率平衡 特性 |
| DOI：10.7667/j.issn.1674-3415.2015.13.006 |
| 投稿时间：2014-09-26修订日期：2015-01-29 |
| 基金项目:国家自然科学基金项目(51467010) |
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| Series micro-grid power balance control based on carrier amplitude variation and phase shift modulation method |
| WANG Xinggui,LIU Zhengying |
| (College of Electrical Engineering and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, China) |
| Abstract: |
| Aiming at the general micro-grid with large harmonic component and undesirability of output voltage waveform and so on, a kind of micro-grid structure which connects the solar, wind and other micro-source inverter output is studied. The system output voltage characteristics and series micro-grid power balance control based on the method of carrier amplitude variation and phase shift modulation are mainly studied. First, a brief description of the structure of the system is made, then followed by analysis of the carrier amplitude variation and phase shift modulation, Fourier expression of system output voltage is derived, based on this, the system voltage characteristics are analyzed. Finally, Matlab/Simulink simulation analysis based on the series micro-grid with three micro-sources is made. Simulation results verify the effectiveness of the control method. |
| Key words: series micro-grid carrier amplitude variation and phase shift power balance characteristics |
