METHOD FOR OPERATING A DC-DC CONVERTER, CONTROL APPARATUS FOR A DC-DC CONVERTER, AND DC-DC CONVERTER

• Main Authors: KOVATCHEV EMIL, STOGER CHRISTIAN
• Format: Patent
• Language: Chinese; English
• Published: 24.05.2019
• 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; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The invention relates to a method for operating a DC-DC converter (10) which adjusts an output variable (Uout) to a predefined desired value (21) at an output (13) by means of a regulator unit (19), wherein the regulator unit (19) sets a duty ratio (D) of pulse width modulation (20) on the basis of an actual value (22) of the output variable (Uout), and wherein the regulator unit has at least oneoperating parameter for providing the pulse width modulation. The at least one operating parameter can be changed and a control apparatus (25) changes the at least one operating parameter to a particular new parameter value (26) and checks whether the regulator unit, with the same desired value and the particular new parameter value, sets a smaller duty ratio for adjusting the output variable (Uout) than before the particular new parameter value was set, and the particular new parameter value is retained in this case, and otherwise the particular new parameter value is reversed. A period duration of the pulse width mo