Baumuller Nurnberg Gmbh

Schaeffler Technologies Ag & Co .Kg

Wago Verwaltungsgesellschaft Mbh

Baumuller Nurnberg Gmb

Viktor Barinberg

Fritz Rainer Götz

Jinsheng Jiang

Ulrich Heller

Franz Jäger

Dirk Hansen

Georg Drenkhahn

Arkady Pankevich

The invention relates to field-oriented current regulation for a permanent magnet synchronous machine () in which setpoint values for the components Id and Iq of the current in the Park coordinate system are limited according to an operating point, wherein a manipulated variable Uqr or Udr of a respective current regulator () is prioritized for the Iq or Id component, whose corresponding component of the induced voltage Uq, Uddrives the current most strongly away from the short-circuit point. The sign of a rotational speed &#x3a9; of a rotor in the synchronous machine () and the signs of Uqr and Udr in particular can be used for the decision regarding the prioritization of Uqr and Udr.

Method and device for limiting setpoint valves for field-oriented current regulation

The present invention relates to a method for the current control of a pulse width modulated power converter for an electric machine, in particular a pulse width modulated inverter connected to the electric machine. The machine and the inverter thereby comprise a plurality of phases, and the current control is carried out by means of a control loop comprising a modulator for the calculation of switching times for a pulse generator for producing a pulse width modulated control voltage for each phase. Furthermore, the present invention relates to a corresponding device for current control of an inverter connected to an electric machine.

Current control of a pulse width modulated power converter

Procedure for determining the electrical drive speed (&#x3c9;) and/or position (&#x3c6;) in a permanent magnet rotor of a brushless electrical linear or rotary motor from a measurement of a multi-phase stator current (i,i). Speed is determined using a mathematical motor model (). From the influence of a rotor reverse EMK that affects the stator current (i,i) conclusions are made about the rotor speed (&#x3c9;) and/or position (&#x3c6;) and an appropriate model speed value () is generated.

System for seamless estimation of speed and/or position, including standstill of a permanent magnet rotor of an electric motor

Procedure for estimating the electrical drive speed and position of a permanent magnet rotor of a brushless electrical linear or rotating motor, especially for a drive control circuit, using multi-phase current measurements on the motor, whose measurement values, depending on the estimated position, are transformed into a rotor-related d,q reference frame i.e. into a direct current vector component and a quadrature current vector component, and the direct and quadrature vector components of current and a voltage, together with the estimated speed, are fed as input variables to a mathematical motor model, and the motor model generates a first output variable and a second output variable, whereby the first output variable in the d,q reference frame corresponds to the d or direct vector component as well as to a position estimation error, and the second output variable in the d,q reference frame corresponds to the q or quadrature component as well as to a speed estimation error, and the two output variables are fed to a tracking controller for estimating and outputting the position and/or speed, whereby from the motor model a third output variable is computed, by

System for estimation of position and speed in a permanent magnet rotor of an electrical motor

A field-oriented control method for an electric drive comprising a plurality of electric motors, for implementing a tension mechanism, especially for load cable and/or gearing means, using measurements of a polyphase motor actual current. The measured values are transformed into a direct current component and a quadrature current component, based upon a magnetic rotor field or flux angle, in a rotor flux-based d,q coordinate system. The quadrature and direct current components from the actual current are subjected to a comparison with predetermined quadrature and direct current components of a current command value. The method has the following steps:

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Nürnberg, Germany

Viktor Barinberg