VOLTAGE CONTROL METHOD AND SYSTEM

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 bas...

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Bibliographische Detailangaben
Hauptverfasser:	GUO, Wei, YUAN, Fang, DU, Chao, LIN, Chaoyong, LI, Bingzhang, PENG, Xuebiao, YANG, Lifen, HE, Gengliang, LIU, Liangjie, GAN, Weiwei, DING, Leilei, MO, Jinwei, SHANG, Jing, ZHAO, Qingliang, HE, Qiao, LIU, Kean, ZENG, Minggao, XU, Shaolong, LI, Hao
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	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 CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PERFORMING OPERATIONS POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES SYSTEMS FOR STORING ELECTRIC ENERGY TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	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.