Electrical EngineeringEnergy HarvestingEngineeringHigh Voltage EngineeringHigh-frequency DeviceAir InsulationSpiral GeneratorsElectric Power TransmissionPower ElectronicsHigh-voltage Spiral GeneratorsHigh Output VoltageElectrical Insulation
Abstract : The performance of Spiral Generators operating at high output voltage is described. Generators employing castor oil impregnation are compared to those with air insulation. Tests on oil-insulated generators with output capacitance of about 1 nF indicate their high voltage capability is up to 1 MV. Generator failure at high output voltage appears to be caused, in part, by the initial de charge voltage, thereby limiting the allowable stored energy. Recent preliminary data suggests this limiation may be overcome by including resistive paper in the generator winding. Also discussed are switching techniques applicable to Spiral Generators or other sources requiring a low-inductance input switch. Solid-dielectric multichannel switches are found particularly suitable for Spiral Generators.