Results 11 to 20 of about 1,684 (260)

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

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

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

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

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

open access: yesMATEC 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   +1 more source

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

open access: yesIEEE 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   +2 more
doaj   +1 more source

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

open access: yesEnergies, 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

Efficiency and Power Loss Distribution in a High-Frequency, Seven-Level Diode-Clamped Inverter

open access: yesEnergies, 2023
The paper presents efficiency and power loss analysis in a high-frequency, seven-level diode-clamped inverter (7LDCB). The inverter is composed of four-level (4L) diode-clamped branches based on MOSFET transistors and Si Schottky diodes.
Robert Stala   +4 more
doaj   +1 more source

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

open access: yesIEEE 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

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