Results 11 to 20 of about 2,216,872 (294)

Evaluation of functional reliability indices for DC-link capacitors in pulse-width modulation converters [PDF]

MATEC Web of Conferences, 2017
The impact of kHz range harmonics on the power losses, thermal stress, and lifetime reduction of the dc-link capacitors in pulse-width modulation (PWM) converters was investigated.
Gorpinich Alexander
doaj   +2 more sources

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

IEEE 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

Comparison between flying capacitor and modular multilevel inverter [PDF]

, 2009
The paper describes the operational principle of flying capacitor and modular multilevel inverters. The detailed discussions of dc link capacitors voltage balancing methods for both inverters are given in order to enable fair comparison. The causes of dc
Anaya-Lara, O., Finney, S.J., Burt, G.M., Adam, G.P., Williams, B.W., McDonald, J.R.   +5 more
core   +3 more sources

A Transient-Modeling-Based Grey-Box Method for Online Monitoring of DC-Link Capacitors [PDF]

, 2023
This article proposes a suitable grey-box method for online monitoring of dc-link capacitors. It is found that the transient behavior of dc-link voltage in ac/dc and dc/dc converters is similar to the zero-state response of a parallel resistor-inductor ...
Haitao Hu, Zhengyou He, Lu, Weiguo, Ho-Ching Iu, Herbert, He, Zhengyou, Pooya Davari, Zhao, Zhaoyang, Blaabjerg, Frede; id_orcid, Weiguo Lu, Davari, Pooya, Zhaoyang Zhao, Frede Blaabjerg, Hu, Haitao, Herbert Ho-Ching Iu   +13 more
core   +1 more source

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

IEEE 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, Quan Yin, Qingyi Wang, Jigui Miao, Yanting Hou   +4 more
doaj   +1 more source

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

Electronics 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

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

Energies, 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

Minimization of DC-Link Capacitance and Improved Operational Performance of a 5-Level Hybrid Multilevel DC-Link Inverter

IEEE Open Journal of Power Electronics, 2022
This study analyzes a single-phase hybrid multilevel dc-link (MLDCL) inverter, in which a dc-link with two capacitors is integrated into a single dc source.
Almachius Kahwa, Hidemine Obara, Yasutaka Fujimoto   +2 more
doaj   +1 more source

Packed E-Cell (PEC) Converter Topology Operation and Experimental Validation

IEEE Access, 2019
This paper proposes a novel single-dc-source multilevel inverter called Packed E-Cell (PEC) topology to achieve nine levels with noticeably reduced components count, while dc capacitors are actively balanced.
Mohammad Sharifzadeh, Kamal Al-Haddad
doaj   +1 more source

NPC Seven-Level Single-Phase Inverter with DC-Link Voltage Balancing, Input Voltage Boosting, and AC Power Decoupling

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, Jakub Hachlowski, Adam Penczek   +2 more
doaj   +1 more source