Method for measuring the winding temperature of drive motor e.g. for washing machine, requires measuring current flow through at least one winding of motor

作者: Klein Hans-Wilhelm

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摘要: A system for measuring the temperature of electric motor windings with supplied via an inverter (23) three controlled half-bridges (231,232,233) from a DC voltage link circuit (22) requires current flow at least through one (11-13) by under approximate evidence cold resistance (R20) and other parameters (1). change (delta T) (11,12,13) is computed over temperature-dependent R). An Independent claim given measurement device, control system.