Low-Power Energy Conversion Systems With Two-Phase PM Machine and a Rectifier With Reduced Number of Controlled Switches

This paper presents two power-generation systems with a two-phase permanent-magnet (PM) synchronous machine associated with a rectifier with small number of controlled switches. The topologies are conceived with the purpose of converting wind energy into electrical energy for low-power applications, providing an enormous potential to be used in urban areas. They can be used in applications connected to the grid or in the stand-alone mode or feeding a microgrid. Compared with some three-phase generation systems with reduced number of controlled switches, the proposed topologies permit obtaining sinusoidal controlled machine currents, reducing dc-link voltage and providing $dq$ currents with low harmonic distortion.