Analysis of Multisampled Current Control for Active Filters

被引:86
作者
Corradini, Luca [1 ]
Stefanutti, Walter [2 ]
Mattavelli, Paolo [3 ]
机构
[1] Univ Padua, Dept Informat Engn, I-35131 Padua, Italy
[2] Univ Udine, Dept Elect Mech & Management Engn, I-33100 Udine, Italy
[3] Univ Padua, Dept Technol & Management Ind Syst, I-36100 Vicenza, Italy
关键词
Active power filters (APFs); digital control; multisampling;
D O I
10.1109/TIA.2008.2006327
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper investigates the multisampling techniques applied to the current control in active-power-filter (APF) applications. In APF applications with digital control, the main bandwidth limitation derives from AID conversion and computational delays and the Sampling-related delay of the digital pulsewidth modulation (DPWM). Using field-programmable gate arrays and fast AID converters for the control implementation, it is possible to minimize the former two; thus, the overall phase lag is dominated by the DPWM, which can strongly be reduced by the multiple-sampling approach, breaking bandwidth limitations of single-sampled solutions. Moreover, as the multisampling approach triggers nonlinear behaviors that can negatively impact the filter-compensating capabilities, a solution based on a simple digital filter is proposed which linearizes the system behavior and does not waste the multisampling advantages. Simulation and experimental results on a 10-kVA prototype confirm the theoretical expectations.
引用
收藏
页码:1785 / 1794
页数:10
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