THE SYMMETRICAL CONTROL LIMITS FOR ASYMMETRICAL H-BRIDGE CASCADED INVERTER IN WIND ENERGY CONVERSION SYSTEM

Abstract

The behavior of the Wind Energy Conversion System (WECS) is affected by wind speed, type of generator used and the conversion technology adopted. The power management in a stand-alone wind turbine installation has to be carefully studied due to the random aspect of the wind distribution. In this paper, a solution based on power segmentation methodology by using the H-Bridge cascaded inverters is proposed. This kind of converter is adapted to the situation of identical and non-identical continuous DC wind turbine sources. The symmetrical phase disposition pulse width modulation (PDPWM) control is used and its limitations are presented.