Research on Control of Levitation Force and Torque of a Maglev Device for Water-Turbine Generator Set

Hydropower generation is clean, pollution-free, and renewable, has good social economic benefits, so it given priority for development throughout the world. The capacity of hydropower stations increasing to 1000 MW from 700 MW. As p value on bearing reaches a new height, coupled with original risk easy damage, thrust faces technical challenges. Maglev technology studied applied large vertical-shaft hydro-generator set solve problem. maglev device designed, working principle expounded, using active-control repulsive-suspension technology. levitation-force addition torque cancellation are realized by controlling frequency excitation power supply. dynamic mathematical models levitation force derived. Combined design theoretical analysis, vector-control strategy developed simulation analysis completed. According results, controller improved enhance response performance. Finally, control experiment carried out prototype, results verify effectiveness strategy.