CONTROL METHOD AND SYSTEM FOR DC/AC CONVERTERS

• Main Authors: MARROYO PALOMO, Luis, URTASUN ERBURU, Andoni, ERDOCIA ZABALA, Ioseba, BALDA BELZUNEGUI, Julián, NAVARRETE KHIBIT, Manuel, GONZÁLEZ SENOSIÁIN, Roberto
• Format: Patent
• Language: English
• Published: 18.01.2024
• 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

Control method for an electronic DC/AC converter (1), wherein for at least one phase: calculating a first reference voltage (er,v, es,v, et,v) from predefined voltage setpoints (22) and a phase voltage (Vcr, Vcs, Vct); calculating a second reference voltage ( er,ipos,es,ipos,et,ipos) based on a difference between a predefined upper current limit (Imax) and the current (ir, is, it) of said at least one phase, and on the phase voltage ; calculating a third reference voltage ( er,ineg,es,ineg,et,ineg) based on a difference between a predefined lower current limit (-Imax) and the current of said at least one phase, and on the phase voltage; comparing the first reference voltage (er,v, es,v, et,v) with the second reference voltage ( er,ipos,es,ipos,et,ipos); selecting the lowest voltage of the two; comparing the selected reference voltage with the third reference voltage ( er,ineg,es,ineg,et,ineg) selecting as the control voltage (er,s, es,s, et,s) the highest of the two; and applying the selected control voltage (er,s, es,s, et,s) to the at least one phase of the converter.