Power Frequency Inverters for High Voltage Tests
نویسندگان
چکیده
The essential demand in high AC voltage testing is the availability of a test voltage with high quality, which is variable in amplitude and frequency. The power supply should not have any influence on the measurements – even the PDmeasurement and should be able to control a fault of the test objects insulation safely. These demands can be fulfilled using modern IGBT inverters. Two level voltage source inverters with connected resonant or filter circuits are normally used to generate a high-quality test voltage by feedback control. The properties of power frequency inverters for high voltage tests are presented in this article along with two typical circuit topologies.
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