WHY IS NOT THERE A 20 KV ASYNCHRONOUS MOTOR?

Abstract

The need for high-voltage asynchronous motors is relevant. The most significant problem is the appearance of partial discharge. Reliable methods for discharge parameter measurements have not been fully developed yet. The measurement of partial discharge parameters is the first step towards the realization of these high-voltage asynchronous motors. The suggested measurement works in real time. The entire signal is first cleaned, then tables on the intensity, duration and distance between impulses of partial discharge are generated using a logical algorithm based on signal shape recognition. The generated data contain all the information about the partial discharge signal. Sorting of the obtained data is performed in the DSP processor and only the interesting statistical data are forwarded to the PC where the archiving or presentation of the results or further processing are carried out. The AD converters, CPLD and FPGA circuits almost of GHz speed have a commercial price which means there is a possibility for a system which observes shape of partial discharge impulses. The steps presented here constitute the initial phase for the realization of a final system.