Variable speed drives 2 Variable-speed drives Ball bearings 1 Bearing currents 1 Capacitance 1 Cleaner production 1 Cleaner production of industry 1 Couplings 1 Displacement pressure 1 Electric discharge machining 1 Electric discharges 1 Electric machine control 1 Electric motors 1 Electric power system control 1 Electrical discharge machining 1 Electrical discharge machining bearing current 1 Electrical machine 1 Electro-hydraulics 1 Electrodes 1 End windings 1 Energy efficiency 1 Energy utilization 1 Finite element analyse 1 Finite element method 1 Flow control 1 Grounded electrodes 1 Hydraulic machinery 1 Hydraulic power 1 Hydraulic system 1 Induction machines 1