Single-Phase Inverter Synchronized to the Grid by Linear Kalman Filter in Microgrids  

作　　者：Oscar Carranza Ruben Ortega Gilberto Sanchez Ruben Galicia 

机构地区：[1]Instituto Politdcnico Nacional, Escuela Superior de C6mputo, Mexieo D. F. 07738, Mexico

出　　处：《Journal of Energy and Power Engineering》2014年第3期523-529,共7页能源与动力工程（美国大卫英文）

摘　　要：This paper presents the analysis and implementation of a synchronizer to the grid using a linear Kalman filter. The synchronizer is used in a single-phase inverter, which is applied in an environment of microgrids. The inverter converts the energy that comes from renewable energy sources （photovoltaic, wind, fuel cell, etc.）. The main objective of obtaining the phase of the grid is to achieve a power factor close to unity in the inverter. For this reason it is vital that the phase difference between the synchronizer and the grid zero. To obtain synchronizer algorithm using LKF （linear Kalman filter） is necessary to know the EKF （extended Kalman filter）. This allows to analyze the operation of the filter, which allows to reach reduce linear Kalman filter or also known as simplified Kalman filter. It is necessary to generate an orthogonal signal in order to obtain a stationary reference frame from a single-phase grid because the linear Kalman filter works with a stationary reference frame. Orthogonal signal is created with an all-pass filter.

关 键 词：INVERTER lineal Kalman filter MICROGRIDS synchronized. 

分 类 号：TN713[电子电信—电路与系统] TM464[电气工程—电器]