A VARIABLE VOLTAGE AND FREQUENCY SCHEME TO OPTIMIZE THE EFFICIENCY OFA WIND-DRIVEN INDUCTION GENERATOR

The most recent approaches to harness energy fi om tilt: wind utilizin g induction generators has been made possible by advances in induction motor control rising power electronic drives. The freedom in adjustin g terminal voltage or current, and frequency allows operation of the i nduction machine to fit any desired characteristic. The purpose of thi s paper is to propose a scheme using this technology to convert wind e nergy to electricity at maximum wind turbine power and induction gener ator efficiency. The Electromagnetic Transients Program (EMTP) is used to simulate the control of the induction generator. Simulation result s show that this system operates as predicted in a stable fashion at t he desired operating point.