Parameter Selection Guidelines for Direct-on-Line Permanent Magnet Generators Contemplating Fault-Ride-Through Capability

Direct-on-line (DOL) driven permanent-magnet generators (PMSGs) are often applied in small-scale hydropower plants (< 10 MW). The Commission Regulation (EU) 2016/631 defines the boundary conditions to operate these parallel with grid. According regulation, fault-ride-through (FRT) capability is required some cases. FRT scenario of PMSGs was studied by simulations and importance machine parameters analyzed. Machine under interest damper winding resistance leakage inductance, stator saliency, source voltage, total inductance system inertia. Authors proved that can be achieved utilizing smart selection without using complicated control systems auxiliary equipment. performed for three their capabilities explored. Results used as a guideline DOL PMSG design satisfying requirements. simulation also verified measurements 600 kW data during fault situation: an incident where generator connected grid phase opposition.