抄録
Converter-excitation of cage induction generator has emerged as a suitable candidate for low cost variable speed Wind Energy Conversion System, because the converter can also transfer output energy from the generator to electrical load. If a suitable control method is applied to the variable voltage and variable frequency excitation of the generator, highly efficient energy conversion will be achieved. The present paper deals with static characteristics of the induction generator, where its output power is controlled using Voltage/Frequency ratio control scheme. The output power is also controlled in accordance with maximum power characteristics of fixed blade pitch wind turbines. High efficiency is achieved by the control over wide shaft speed variation. The paper also develops an analytical method to know these characteristics.
