Robert Boschgmbh

Thomas Wiecha

Mark Damson

Daniel Raichle

Gunther Goetting

Michele Hirsch

Jochen Kuehner

Marcel Maur

Kay Hindorf

The invention is a pulse-controlled inverter with one or more semiconductor switches and freewheeling diodes arranged in parallel to each semiconductor switch. The semiconductor switches are triggered only when the current does not flow through a freewheeling diode that is arranged in parallel to the semiconductor switch. This allows the number of triggering processes for the semiconductor switch to be reduced. The reduced number of triggering processes for the semiconductor switches results in lower power losses and an increased service life of the entire system.

Power converter and method for operating a power converter to minimize a number of triggering processes of a semiconductor switch

Embodiments relate to a control device for an electric motor having at least one phase. The control device includes a power unit having a first switching element and a first flyback element corresponding to the first switching element and a second switching element and a second flyback element corresponding to the second switching element. The first switching element is designed to couple a corresponding power connection of the motor with a positive supply voltage. The second switching element is designed to couple the corresponding power connection of the motor with a negative supply voltage; and a control unit designed to separately detect a first current flowing through the first switching element or second switching element corresponding to the phase, to detect a second current flowing through the flyback element corresponding to the respective second switching element or first switching element, and to control the switching elements of the power unit.

Control device for an electric motor, vehicle and method

The invention relates to a method for actuating an inverter () by means of space vector pulse width modulation, in particular for actuating an electrical machine (), wherein the inverter () has a plurality of controllable switches (S) and is configured to provide a multi-phase electrical voltage (U, V, W) in the form of a voltage space vector (V*), wherein the controllable switches (S) are actuated in such a manner that different duty cycles of the switches (S) are set and a plurality of successive different switching states (V-V) of the switches (S) are set up to provide the voltage space vector (V*), wherein the duty cycles of the switches (S) are extended during a pulse width modulation period (T) if a duty cycle of one of the switches (S) falls below a predefined threshold () during the pulse width modulation period (T).

Method and device for actuating an inverter

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Asperg, Germany

Thomas Wiecha