Method for operating a drive system, and drive system for carrying out a method
AssigneeSew-Eurodrive GmbH & Co. KG
InventorMarcel STARK
Life of this patent
Estimating the term…
Abstract
In a method for operating a drive system and a drive system for carrying out a method, the electric motor is connected to the AC-side connection of an inverter, the DC-side connection of the inverter is connected to the DC-side connection of the rectifier via an inductance, a capacitance is connected to the DC-side connection of the inverter, a series circuit formed from a resistor and a braking chopper is connected to the DC-side connection of the inverter, and the braking chopper is operated with a pulse width modulation frequency, which is determined by a pseudo-random number generator.
Claims23
1-15. (canceled)
A method of operating a drive system having a rectifier and at least one inverter with an electric motor, the electric motor connected to an AC-side connection of the inverter, a DC-side connection of the inverter connected to a DC-side connection of the rectifier via an inductance, a capacitance connected to the DC-side connection of the inverter and/or to the DC-side connection of the rectifier, a respective series circuit respectively formed from a resistor and a controllable semiconductor switch is connected to the DC-side connection of the inverter and/or to the DC-side connection of the rectifier, comprising:
- operating the series circuit, in a time period in which the series circuit is operated, with a pulse width modulation frequency is spaced apart from a resonant frequency of an oscillating circuit that includes the inductance and the capacitance;
- and
- generating the pulse width modulation frequency by a pseudo-random number generator.
Dependencies are inferred from the claim text.