Provided are a voltage control method and system. The method comprises: calculating the current voltage error between a given output voltage and the current output voltage; inputting the current voltage error into a fuzzy controller, and determining a target output voltage of an inverter; on the basis of the amplitude difference and the phase difference between the target output voltage and the current output voltage, determining an amplitude adjustment instruction using a first PI controller, and determining a phase adjustment instruction using a second PI controller; and adjusting the amplitude of the output voltage of the inverter according to the amplitude adjustment instruction, and adjusting the phase of the output voltage of the inverter according to the phase adjustment instruction, such that the output voltage of the inverter is kept within a pre-set range. In the solution, a fuzzy controller is used to determine a target output voltage of an inverter, and the amplitude and phase of the output voltage of the inverter are adjusted according to the target output voltage and PI controllers, such that the output voltage of the inverter is kept within a pre-set range. There is no need to perform droop control on the output voltage of the inverter, thereby improving the precision and robustness of the output voltage.
VOLTAGE CONTROL METHOD AND SYSTEM
VERFAHREN UND SYSTEM ZUR SPANNUNGSSTEUERUNG
PROCÉDÉ ET SYSTÈME DE COMMANDE DE TENSION
2024-07-03
Patent
Electronic Resource
English
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / 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 |
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