A look-up table-based maximum power point tracking for WECS

Abstract

This paper proposes a look-up table method for tracing the maximum power generated in the wind energy conversion system (WECS). The look-up table is used to develop the corresponding change in the duty ratio with the change in the current. Self-excited induction generator (SEIG) is the perfect choice for generating power from the wind. A diode bridge rectifier (DBR) is used to convert renewable energy into electrical output and a dc–dc converter maintains the grid voltage. This method of tracking the maximum power from the wind is determined using the dc grid current. The dc grid current is the control variable that tracks the maximum power in the system and it is not dependent on the machine and wind parameters. Simplicity in circuit and control algorithm is the key advantage for supplying maximum power from the WECS to the dc microgrid.