D-Σ Digital Control for Three-Phase Bi-Directional Inverters

被引：0
|
作者：
Wu, T. -F. [1 ]
Chang, C. -H. [1 ]
Lin, L. -C. [1 ]
机构：
[1] Natl Tsing Hua Univ, Dept Elect Engn, EPEARL, Hsinchu 30013, Taiwan
来源：
2014 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-HIROSHIMA 2014 - ECCE-ASIA) | 2014年
关键词：
D-Sigma digital control; leakage ground current; inductance variation and inverter; STRATEGY;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
This paper presents a division-summation (D-Sigma) digital control for a three-phase bi-directional photovoltaic inverter with wide inductance variation. The bi-directional inverter fulfilling grid connection and rectification with power factor correction has been implemented in the laboratory. The proposed D-Sigma approach summarizes the inductor-current variations over one switching cycle to derive control laws directly, which can overcome limitations of d-q transformation. With the digital control, the inverter can deal with wide inductance variation, reducing core size significantly. In the design and implementation, the inductances corresponding to various inductor currents are measured and tabulated into a single-chip microcontroller for tuning loop gain cycle by cycle, ensuring stable operation. Measured results from a 10 kVA 3 phi bi-directional inverter have been presented to confirm the feasibility of the discussed control approaches.
引用
收藏
页码：2050 / 2057
页数：8
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