Author, as appears in the article.: Liu Q; Rodriguez ER; Farivar GG; Ceballos S; Townsend CD; Leyva R; Pou J
Department: Enginyeria Electrònica, Elèctrica i Automàtica
URV's Author/s: Leyva Grasa, Ramon
Keywords: Zero-sequence voltage Voltage Steady-state Static compensator (statcom) Modulation Discontinuous modulation (dpwm) Clamps Cascaded h-bridge (chb) Capacitors Capacitor voltage ripples Capacitance reduction Capacitance Automatic voltage control zero-sequence voltage steady-state static compensator (statcom) modulation discontinuous modulation (dm) clamps cascaded h-bridge (chb) capacitors capacitor voltage ripples (cvrs) capacitance reduction capacitance automatic voltage control
Abstract: This paper presents a discontinuous modulation (DM) strategy for static compensators (StatComs) based on a cascaded H-bridge (CHB) converter with star configuration. The proposed DM strategy considers the capacitor voltage oscillations at twice the fundamental frequency and the effect of zero-sequence voltage injection on the capacitor voltages. Considering these effects is especially important in CHB-StatComs with large capacitor voltage ripples (low capacitance StatComs), where the assumption of a constant dc-link voltage, which is the basis of conventional DM strategies, does not apply. The paper also describes a coherent set of steady-state waveforms for CHB-StatComs under DM. In addition to the well-known benefit of reducing the switching losses, the proposed DM also reduces the dc-link capacitors size and extends the operating range. The viability of the proposed DM strategy is verified experimentally on a small-scale prototype. In addition, simulation results are obtained using a real-scale system to study feasibility of the DM under unbalanced conditions.
Thematic Areas: Interdisciplinar Engineering, electrical & electronic Engenharias iv Engenharias iii Electrical and electronic engineering Ciências agrárias i Ciência da computação
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: ramon.leyva@urv.cat
Author identifier: 0000-0001-6431-3688
Record's date: 2024-09-07
Papper version: info:eu-repo/semantics/acceptedVersion
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Ieee Transactions On Power Electronics. 37 (3): 2790-2800
APA: Liu Q; Rodriguez ER; Farivar GG; Ceballos S; Townsend CD; Leyva R; Pou J (2022). Discontinuous Modulation of a Cascaded H-Bridge Low-Capacitance StatCom. Ieee Transactions On Power Electronics, 37(3), 2790-2800. DOI: 10.1109/TPEL.2021.3114976
Entity: Universitat Rovira i Virgili
Journal publication year: 2022
Publication Type: Journal Publications
Repositori URV