Sensorless control device and method of filter capacitor current by using a state observer for a 3-phase DC-AC inverter

The present disclosure provides a sensorless control device and method of filter capacitor current by using a state observer for a 3-phase DC-AC inverter. The method comprises receiving a dc-link voltage of the 3-phase DC-AC inverter at a present sampling time; receiving a first phase filter-capacit...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	YANG, ZONG-ZHEN, KONISHI, YOSHIHIRO, HUANG, SHU-SYUAN, HSIEH, MIN-JU
Format:	Patent
Sprache:	chi ; eng
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 CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The present disclosure provides a sensorless control device and method of filter capacitor current by using a state observer for a 3-phase DC-AC inverter. The method comprises receiving a dc-link voltage of the 3-phase DC-AC inverter at a present sampling time; receiving a first phase filter-capacitor-voltage actual value, a second phase filter-capacitor-voltage actual value, and a third phase filter-capacitor-voltage actual value of the 3-phase DC-AC inverter at the present sampling time; and by using a state observer, outputting filter-capacitor-current state variable values, wherein the filter-capacitor-current state variable values are predicted current values at a next sampling time, and the filter-capacitor-current state variable values are average current values without ripples.