This application provides a method and an apparatus for controlling a grid-tie inverter. The method includes: acquiring an output voltage of the grid-tie inverter and an output current value of the grid-tie inverter at a current moment; calculating N output current values of the grid-tie inverter at a next moment that is in one-to-one correspondence to N switch states of the grid-tie inverter based on the output current value at the current moment, and N is a natural number greater than or equal to 2; acquiring a first reference current based on the output voltage; acquiring a second reference current based on the output current and the first reference current; determining a first switch state, wherein a difference value between the output current value at the next moment corresponding to the first switch state and a value of the second reference current at the next moment is a minimum value among difference values between the N output current values at the next moment and the value of the second reference current at the next moment; and controlling the grid-tie inverter to perform power transmission in the first switch state at the next moment.
CONTROL METHOD AND DEVICE FOR GRID-CONNECTED INVERTER
VERFAHREN UND VORRICHTUNG ZUR STEUERUNG EINES AN DAS NETZ ANGESCHLOSSENEN WECHSELRICHTERS
PROCÉDÉ ET DISPOSITIF DE COMMANDE POUR ONDULEUR CONNECTÉ AU RÉSEAU
2022-12-21
Patent
Elektronische Ressource
Englisch
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 / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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