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Steady State Analysis of A wind Energy Driven Self Excited Induction Generator (SEIG)

The paper studies the steady state analysis of a wind energy driven self-excited induction generator (SEIG) and the output voltage connected to network using a static power conditioner. This conditioner consists of a diode bridge and an inverter bridge thyristor tied together via a DC link of high inductance. This combination of the conditioner allowed to form the direct current (DC) equivalent circuit of the whole system. This DC equivalent circuit can be used to analyses the generator under operation condition and control strategy. The control strategy in which the firing angle of inverter bridge calculated using the DC equivalent circuit to obtain the rate current of generator at any generator speed while the output power changed with the speed of the generator and can be increased about rated value. In this way of control, the wind turbine can rotate at any speed of wind power even if it is higher than the rated speed of the generator without need to use method of the pitch angle controller. The aim of the study is to calculate and measure the effect of the firing angle effect on SEIG.