Robert Boschgmbh

Wei-Lung Lee

Michele Hirsch

Sebastian Paulus

Timo Kuehn

Maximilian Manderla

Florian Malchow

The invention relates to a method () for regulating an electric machine () comprising a harmonic regulator (), wherein the harmonic regulator comprises an input transformer (), a regulator (), and an output transformer (). The method has the steps of: ascertaining () a feedback variable (Idq); transforming () the feedback variable (Idq); ascertaining () a regulating deviation; ascertaining () an equalization variable (UHrmc*); back-transforming () the equalization variable (UHrmc*); and energizing () at least one winding of the electric machine () on the basis of the actuating variable (UdqHrmc*).

Method and device for regulating an electric machine

The invention relates to a method () for regulating an electric machine (), comprising a harmonic filter (), said harmonic filter () comprising a second filter () and a filter output transformer (). The method has the steps of: ascertaining () a feedback variable (Idq); determining () a filter specification variable (FV); filtering () the filter specification variable (FV); ascertaining () a filtered feedback variable without harmonic components (IdqFunda); and energizing () at least one winding of the electric machine () on the basis of the filtered feedback variable without harmonic components (IdqFunda).

The invention relates to a method () for calibrating a controller of an electric machine (). The method comprises the following steps: specifying () a first signal (S_) for generating a sinusoidal phase current for energising a winding of an electric machine (); superposing () the first signal (S_) with a test signal (S_Test_i) in order to generate a harmonic oscillation with a predetermined excitation amplitude and/or phase position relative to the phase current, which harmonic oscillation superposes the phase current; detecting () a response signal (S_Antw_i), resulting from the superposition of the phase current and the harmonic oscillation, by means of a sensor (); determining () a calibrated signal (S_kal) for generating a harmonic oscillation with a predetermined excitation amplitude and a phase position relative to the phase current on the basis of a determined minimum of a response plane (A_Antw); operating () the controller () of the electric machine () on the basis of the determined minimum.

Method and device for calibrating a controller of an electric machine

The invention relates to a method () for regulating an electric machine (), comprising at least one first filter () and at least one second filter (). The method has the steps of: ascertaining () a feedback variable (Idq); filtering () a specifiable GW matching variable (Idq*); ascertaining () the filtered feedback variable without fundamental components (IdqWo-Funda); filtering () the filtered feedback variable without fundamental components (IdqWo-Funda); ascertaining () a filtered feedback variable without harmonic components (IdqFunda); and energizing () at least one winding of the electric machine () on the basis of the filtered feedback variable without harmonic components (IdqFunda).

The invention relates to a method for determining a rotor temperature of an electric motor, in particular an asynchronous motor, the rotor temperature being determined at least in accordance with reactive powers and/or in accordance with losses of the electric motor. A first rotor temperature is determined in accordance with the reactive powers and, depending on an operating range of the electric motor, plausibility-checked or replaced by a second rotor temperature, which is determined in accordance with the losses.

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Bietigheim-Bissingen, Germany

Wei-Lung Lee