Results 11 to 20 of about 1,585 (264)
Energies, 2022 This paper presents a novel concept of the DC-AC system with the input voltage boost ability, seven-level output voltage modulation, and the input AC current reduction at the double frequency of the output voltage.
Robert Stala +2 more
doaj +1 more source
Active voltage balancing of DC-link electrolytic capacitors
IET Power Electronics, 2008 DC voltage links of three-phase power converters are frequently equipped with a series connection of two electrolytic capacitors because of high voltage level. For such a configuration, usually resistors have to be arranged in parallel to each capacitor in order to balance the partial voltages. These balancing resistors, however, have to be dimensioned
H. Ertl, T. Wiesinger, J.W. Kolar
openaire +1 more source
IEEE Access, 2023 This research introduces an innovative converter system which has been developed to seamlessly incorporate multiple sources of renewable energy into both DC and AC grids. The integration of multiple energy sources is made possible through the utilization
Immanuel N. Jiya +3 more
doaj +1 more source
Four-Switch Three-Phase PMSM Converter with Output Voltage Balance and DC-Link Voltage Offset Suppression [PDF]
Information, 2017 High power quality, efficiency, complexity, size, cost effectiveness and switching losses of the direct current to alternating current (DC–AC) conversion system are crucial aspects in industrial applications. Therefore, the four-switch three-phase inverter (4S3P) has been proposed as an innovative inverter design.
Fadil Hicham +3 more
openaire +2 more sources
IEEE Access, 2020 The voltage balancing problem of dc-link capacitors in multilevel diode-clamped converters limits their applications in industry under some operational conditions.
Muhammad Attique Qamar +4 more
doaj +1 more source
A Novel Controller Based on Single-Phase Instantaneous p-q Power Theory for a Cascaded PWM Transformer-less STATCOM for Voltage Regulation [PDF]
Journal of Operation and Automation in Power Engineering, 2018 In this paper, dynamic performance of a transformerless cascaded PWM static synchronous shunt compensator (STATCOM) based on a novel control scheme is investigated for bus voltage regulation in a 6.6kV distribution system.
M. Abbasi, B. Tousi
doaj +1 more source
Seven Level T-Type Switched Capacitor Inverter Topology for PV Applications
IEEE Access, 2021 The conventional neutral point clamped (NPC) multilevel inverter topology needs voltage balancing circuits to balance the dc-link capacitor, the number of component count is high and output voltage is half of the input voltage which increase the size of ...
Saeed Alyami +4 more
doaj +1 more source
IEEE Access, 2021 This article presents an 11-level operation of the WE (Wee)-Type inverter. The topology employs a single DC-source, has a reduced number of components, and exhibits a boosting capability.
Mohammad Ali +5 more
doaj +1 more source
Harmonics Compensation by Using a Multi-Modular H-Bridge-Based Multilevel Converter
Energies, 2021 This paper presents an active power filter based on a seven-level cascade H-bridge where the main contribution is a control strategy that combines model-based predictive control, the voltage vectors of the converter output levels, the phase shift PWM ...
Raul Gregor +5 more
doaj +1 more source
Energies, 2018 In three-level neutral-point-clamped (NPC) inverters, the voltage imbalance problem between the upper and lower dc-link capacitors is one of the major concerns.
Kyoung-Pil Kang +3 more
doaj +1 more source