Unbalanced operation of multiphase wind energy conversion systems connected to microgrids

Multiphase energy conversion systems have been recently proposed to achieve simple fault-tolerant operation with no extra hardware. When such multiphase systems are connected to the grid, efficiency is maximized by operating the system in a balanced manner with an equal distribution of the power among phases. However, the situation differs when the multiphase system is connected to different microgrids with individual active and reactive power requirements. In this scenario, unequal power sharing between the different phases of the multiphase machine is mandatory. This work explores the control strategy to operate in speed mode with an independent regulation of the active power contribution of microgrids. Simulation results confirm the capability of the system to operate in unbalanced mode at the expense of some extra copper losses.