Schneider Toshiba Inverter Europe Sas

Schneider Electric Power Drives Gmbh

Voith Turbo Gmbh Co. Kg

J. M. Voith Gesellschaft M. B. H.

Rudolf Fehringer

Hocine Boulharts

Francois Malrait

Thomas Devos

François Malrait

Mehdi Messaoudi

Michael Hartmann

Johann Wurz

Gerhard Lehner

An electronic determination device for determining at least one characteristic parameter of a connection set connected between a converter and an electric machine; the converter comprising at least two output terminals and, for each output terminal, a switching branch including at least one converter switch; the connection set comprising a filter connected to the output terminals and a cable connected between the filter and the electric machine; the filter including, for each output terminal, a respective electromagnetic coil connected to said output terminal and a respective capacitor connected to said coil; the determination device comprising:

Electronic device and method for determining at least one characteristic parameter of a connection set connected between a converter and an electric machine, related power supply chain and computer program

The invention relates to a method for controlling a converter connected to an electric machine by a cable (Cx) via a filter (F), said method consisting in determining at least one sequence of a plurality of voltage pulses forming a square wave signal to be applied to each conductor so as to minimize an overvoltage level, said sequence comprising a number 2N of successive pulses, N being greater than or equal to 1, each pulse being defined by a distinct rank n, said sequence being generated such that each increasing voltage pulse of rank n exhibits a pulse width that is identical to that of a decreasing voltage pulse of rank equal to 2N+1&#x2212;n, and the method includes the following steps in particular:

Method of controlling a converter connected to an electric machine

The invention relates to a method for actuating inverter stages () switched in parallel, wherein each inverter stage () comprises several switching elements () with two switching states each. In accordance with the invention, the actuation of the inverter stages () occurs via a central control unit () which is connected to each inverter stage () via a serial data transmission path (). Measures are proposed for transmitting the selected switching states from the central control unit () to the respective inverter stage () in order to ensure secure operation of the inverter stages () over a plurality of switching processes on the one hand and to reliably prevent functional impairments of the switching elements () by erroneous actuation, but to also carry out the actuation of the switching elements () of the inverter stages () in a sufficiently rapid way on the other hand in order to avoid impairing the quality of the output current formed by the inverter stage ().

Method for actuating inverters connected in parallel

A control method used in a control unit of a power converter, connected by three output phases to a synchronous electric motor, the method being used for starting the motor and including a first step for determining the voltages to be applied to the output phases depending on a reference current, a second step for determining a frequency to be applied to the stator depending on a stator frequency, a step for application of the first step and the second step for a given duration, so as to allow the rotor of the synchronous electric motor to rotate at the stator frequency applied. The method is particularly effective for an architecture including a transformer and a sinus filter between the power converter and the electric motor.

Control method for starting a synchronous electric motor

The present invention relates to a rectifier circuit with a three-phase rectifier arrangement () of semiconductor valves (), preferably a bridge rectifier circuit of diodes, wherein the rectifier arrangement () comprises a three-phase mains input () and a DC output (), and at least one of the three phases (U, V, W) at the mains input () is connected to a first pole connection (A) of a three-pole circuit () for diverting an injection current (i) into the three-pole circuit (). It is provided in accordance with the invention that each phase (U, V, W) can respectively be connected with a switching element (S, S, S) to the first pole connection (A) of the three-pole circuit (), and a second and third pole connection (B, C) of the three-pole circuit () is respectively connected to an output line (P,N) of the DC output () for control currents (i,i), wherein the three-pole circuit () comprises controllable semiconductor valves (S,S,S,S), preferably IGBTs, for the active control of the control currents (i,i) and/or the injection current (i), and at least one choke () is arranged on one of the output lines (P,N) at the DC output (), and a time-variable load () is provided at the DC output ().

Rectifier circuit with current injection

The invention concerns a transverse-flux machine whose stator features a winding with a first phase and a second phase. The windings of the first phase and the windings of the second phase are divided in two component windings each. The first component winding of the first phase is wired in series with the second component winding of the second phase, while the second component winding of the first phase is wired in series with the first component winding of the second phase.

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Vienna, Austria

Rudolf Fehringer