Results 11 to 20 of about 7,480 (292)

An Improved Down-Scale Evaluation System for Capacitors Utilized in High-Power Three-Phase Inverters under Balanced and Unbalanced Load Conditions

open access: yesEnergies, 2022
The DC-link capacitors in an electronic power system are the main constraint of the power density and lifespan of the power converters. Evaluating the load life of capacitors working in severely adverse circumstances plays an important role in the design
Yi-Hung Liao, Yen-Lun Lin
doaj   +1 more source

Assessment and Mitigation of Dynamic Instabilities in Single-Stage Grid-Connected Photovoltaic Systems With Reduced DC-Link Capacitance

open access: yesIEEE Access, 2021
Single-stage utility-scale photovoltaic (PV) systems are usually interfaced with the host grid via a centralized voltage-source converter (VSC). Recently, and due to their reliability, the dc-link film capacitors are favored over electrolytic types in ...
Mohammad Adnan K. Magableh   +2 more
doaj   +1 more source

Optimized Space-Vector Modulation to Reduce Neutral Point Current for Extending Capacitor Lifetime in Three-Level Inverters

open access: yesIEEE Access, 2020
In this paper, an optimized space-vector modulation (SVM) to reduce DC-link ripple current in three-level inverters is presented. Various types of capacitors can be utilized to balance the voltage in the DC-link of voltage source inverters.
Sang-Won An, Seok-Min Kim, Kyo-Beum Lee
doaj   +1 more source

Reliability of DC-link Capacitors in Three-Level NPC Inverters under different PWM Methods [PDF]

open access: yes, 2022
Pulse-width modulation (PWM) method plays an important role to ensure high efficiency and reliability of the three-level neutral-point-clamped (NPC) inverter.
Sangwongwanich, Somboon   +3 more
core   +1 more source

Comprehensive AC performance analysis of ceramic capacitors for DC link usage [PDF]

open access: yes, 2022
S.1240-1246The paper explains the needs for using of an additional DC link capacitor closely to fast switching semiconductor and derives design rules for it.
Klein, K., Hoene, E., Lang, K.-D.
core   +1 more source

A Torque Control Method Based on I-MR Controller for IPMSM Drive With Small DC-Link Capacitor

open access: yesIEEE Access, 2021
In traditional motor drive system, large volume electrolytic capacitors are utilized to buffer energy and stabilize the dc-link voltage. However, these capacitors affect the reliability of the drives and narrow the conduction angle of diode-rectifier. As
Haichun Li   +4 more
doaj   +1 more source

A PFC converter topology based on active power decoupling circuit with asymmetric small split capacitors

open access: yesElectronics Letters, 2022
A novel active power decoupling converter (APDC) applied in power factor correction (PFC) converter is proposed, which overcomes the problem that the DC‐link voltage ripple of small capacitor PFC converters depend heavily on the consistency of capacitors.
Chao Zhang
doaj   +1 more source

Modelling approaches for DC-DC converters with switched capacitors [PDF]

open access: yes, 2015
In this paper we review relevant problems in the modelling of DC-DC converters with switched capacitors. We study several approaches that overcome the exposed modelling difficulties, addressing ideal and nonideal cases and using dynamic equations that ...
Rapisarda, P.   +2 more
core   +1 more source

Reliability-oriented design and control of DC-link capacitors in power converter systems [PDF]

open access: yes, 2020
The reliability of power converter systems has demonstrated its unique value in the context of growing renewable energy generation worldwide. As a reliability-critical electrical component, the dc-link capacitor has drawn particular attention across ...
Lu, Nanjun
core   +1 more source

Single-Phase Grid-Forming Strategy with Power Decoupling Implementation for Electrolytic-Capacitor-Free EV Smart Battery Charger

open access: yesEnergies, 2023
Smart Battery Chargers (SBCs) implementing grid-forming (GFM) control strategies are a promising solution to provide voltage and frequency support, increasing the grid reliability.
Damián Sal y Rosas, Alvaro Zarate
doaj   +1 more source

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