Robert Boschgmbh

Thomas Daub

Gholamabas Esteghlal

Rene Schenk

Markus Michels

Marcus Rosenberger

Michael Ruffer

The invention relates to a method () for charging an intermediate circuit capacitor () in a high-voltage network (). The high-voltage network can be connected to a power source () by means of at least one switch () and is coupled to a low-voltage network () by means of a DC voltage converter (). The method comprises the steps: determining () a first voltage (U) across the power source (); determining () a second voltage (U) across the intermediate circuit capacitor (); determining () a first difference (D) between the first voltage (U) and the second voltage (U); switching () the DC voltage converter () to the boost converter operating mode to charge the intermediate circuit capacitor () according to the determined first difference (D).

Method and device for charging an intermediate circuit capacitor in a high-voltage network

The invention relates to a device and to a method for producing a signal having an adjustable pulse duty factor, in particular a pulse-width-modulated signal. For this purpose, the period duration of the pulse-width-modulated signal can be varied. Thus, the pulse duty factor of the pulse-width-modulated signal can be adapted very accurately to the desired pulse duty factor without great switching complexity by using a simple counter with a fixed clock frequency.

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Vaihingenenz, Germany

Thomas Daub