Operational envelope of a hybrid permanent magnet generator for wind applications

The evolution of technologies has led to the exploration of more efficient mechanisms in power generation systems. Currently, wind energy converters provide an efficient alternative for obtaining electrical energy; however, the location of the wind farms and the size and weight of the components are significant limitations. Implementing hybrid generators is an effective alternative for these systems since they could reduce the electrical and electronic elements. Hybrid generators have two fundamental parts: the permanent magnet and wound field rotor components. The terminal voltages of the generator can be adjusted by modifying the wound field current. However, it is essential to establish detailed studies in which the operating region of this generator is determined. This work provides a reference framework for establishing phase current and output power limits under different rotor speeds and DC-link voltages; this information could offer an operative region of the hybrid generator to ensure the lifetime and the implementation of these generators according to the availability of electronic devices.