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Temperature Estimation in Inverter Fed Machines Using High Frequency Carrier Signal Injection
Ist Teil von
2007 IEEE Industry Applications Annual Meeting, 2007, p.2030-2037
Ort / Verlag
IEEE
Erscheinungsjahr
2007
Quelle
IEEE Electronic Library (IEL)
Beschreibungen/Notizen
Temperature monitoring using the injection of a high frequency, carrier signal voltage is proposed in this paper. The carrier signal voltage is used to estimate the transient impedance of the system, which is a function of the stator transient resistance, and therefore, the windings' temperature. The variation of the stator transient impedance's phase angle is used to track the temperature of the stator windings. The method can be implemented in standard, inverter-fed drives with no additional hardware, minimal computational requirements, and practically no interference with the regular operation of the drive.