Capacitor Condition Monitoring Method for Low-Capacitance StatComs: An Online Approach Using the Inherent Second-Harmonic Oscillations

The cascaded H-bridge low-capacitance static compensator (LC-StatCom) deliberately reduces the capacitor size while allowing large oscillations in capacitor voltages. When a capacitor deteriorates, its capacitance decreases or/and its equivalent series resistance (ESR) increases, compromising StatCo...

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Veröffentlicht in:	IEEE transactions on power electronics 2023-09, Vol.38 (9), p.1-5
Hauptverfasser:	Rodriguez, Ezequiel, Leyva, Ramon, Qingxiang, Liu, Farivar, Glen G., Pou, Josep
Format:	Artikel
Sprache:	eng
Schlagworte:	Automatic voltage control Capacitance Capacitance bridges Capacitors Cascaded H-bridge (CHB) Compensators Condition monitoring dc-link capacitor diagnostics equivalent series resistance (ESR) estimation Frequency conversion Harmonic oscillation Monitoring Oscillators reliability Signal injection Static Compensator (STATCOM) Voltage measurement
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