The invention relates to a method for operating a current converter, in particular of an electric machine, in which, for the or for each semiconductor switch of the current converter, a control signal (P′) for setting a switch-off speed (Anew) is generated, wherein an electric intermediate circuit voltage (Udc) of an intermediate circuit is measured and compared to a voltage threshold value (Uthresh), wherein an operating temperature (TB) of the respective semiconductor switch is measured and compared to a temperature threshold value (Tthresh), wherein a load current (Ic) switched by means of the respective semiconductor switch is measured and compared to a current threshold value (Ithresh), and wherein the control signal (P′) for setting the switch-off speed (Anew) is generated on the basis of the comparisons.
Method for operating a current converter and current converter operating according to said method
2020-07-14
Patent
Electronic Resource
English
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H03K PULSE TECHNIQUE , Impulstechnik |
METHOD FOR OPERATING A CURRENT CONVERTER AND CURRENT CONVERTER OPERATING ACCORDING TO SAID METHOD
European Patent Office | 2019
|European Patent Office | 2023
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