A dump load-less standalone wind energy conversion system supplying a generic load

A current-source inverter-based standalone wind energy conversion system has been recently proposed for low power applications. In this paper, the system is modified by removing the dump load and avoiding the surplus power generation by curtailment of wind power. The generator-side converter is used to control the shaft speed, allowing extraction of maximum available wind power in normal mode of operation, and to regulate DC-link current, allowing curtailment of wind power when it is not possible to absorb maximum available power by the storage system and the load. In order to verify successful operation of the system under a wide range of load types, a reduced-order generic load model, that is suitable for both balanced and unbalanced load conditions, is developed and tested with the system. The current-source inverter is used to control positive- and negative-sequence voltage components separately. The operation of the modified system is investigated and verified under variable wind and load conditions.