METHOD FOR OPERATING A CURRENT CONVERTER AND CURRENT CONVERTER OPERATING ACCORDING TO SAID METHOD

• Main Authors: GU QIONG, SLAVIK THOMAS, HOFFMANN HOLGER
• Format: Patent
• Language: Chinese; English
• Published: 03.05.2019
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; BASIC ELECTRONIC CIRCUITRY; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; PULSE TECHNIQUE; TRANSPORTING; VEHICLES IN GENERAL

The invention relates to a method for operating a current converter (8), in particular of an electric machine (2), in which, for the or for each semiconductor switch (22) of the current converter (8),a control signal (P') for setting a switch-off speed (Anew) is generated, wherein an electric intermediate circuit voltage (Udc) of an intermediate circuit (10) is measured and compared to a voltagethreshold value (Uthresh), wherein an operating temperature (TB) of the respective semiconductor circuit (22) is measured and compared to a temperature threshold value (Tthresh), wherein a load current (Ic) switched by means of the respective semiconductor circuit (22) 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. 本发明涉及一种用于运行整流器(8)、尤其是电机(2)的整流器(8)的方法，其中对于所述整流器(8)的半导体开关(22)或每个半导体开关(22)来说，产生用于调整切断速度(A)的控制信号(P')，其中检测中间电路(10)的中间电路电压(U)并且将其与电流阈值(U)进行比较；其中检测相应的半导体开关(22)的运行参数(T)并且将其与温度阈值