摘要

In order to study the influence of continuous pulse voltage output from inverter, according to the waveform of the traction inversion system and acceleration aging test principle, an insulation aging test system based on continuous high voltage square wave pulse was designed. The test system is composed of a pulse generator and a high frequency transformer. The main performance specifications are: peak-to-peak voltage: 0-10 kV, frequency range:-500 Hz-20 kHz, duty circle: 50%, rising time: about 2 μs, output power: 1 kW and working temperature range: room-temperature to 300°C. It has many merits such as high pulse amplitude, adjustable frequency, over-current and over-voltage protection functions and etc. Test results show that the pulse power source can meet the test requirements of traction motor insulation evidently.

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