Abstract:The main problems that appear when using a long cable connection between a Variable Frequency Drive (VFD) and the AC motor are over-voltages and bearing currents. The last one concerns especially EMC, while the over-voltage transients can be fatal to the motor. This paper firstly investigates the "converter -cable -motor" system behaviour concerning overvoltages. Then it proposes an online identification of the cable parameters. This result could be used in order to reduce over-voltages. We introduce here an a… Show more
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