Results 31 to 40 of about 967,927 (282)

Low Input Ripple High Step-Up Extendable Hybrid DC-DC Converter

IEEE Access, 2019
The widely utilization of renewable energy with low output voltage makes the high voltage ratio boosting converter more popular. This article introduces a non-isolated low input ripple high step-up extendable hybrid DC-DC converter.
Guoqing Lin, Zhou Zhang
doaj   +1 more source

Novel single‐armed modular multilevel converter for reducing total converter capacitance

IET Power Electronics, 2021
During normal operation of a conventional Modular Multilevel Converter (MMC), half of its capacitors remain bypassed at any time instant, increasing the total required capacitance for converter operation, and in turn leading to a larger size and volume ...
Hamed Pourgharibshahi, Seyyedmahdi Jafarishiadeh, Hamid Mahmoudi, Hassan Zargarzadeh, Reza Ahmadi   +4 more
doaj   +1 more source

Design Space Analysis of the Dual-Active-Bridge Converter for More Electric Aircraft

Energies, 2022
In the literature, different DC/DC power electronic converters (PECs) have been found to interconnect high-voltage DC and low-voltage DC grids in the electric power distribution networks of aircraft.
Alejandro Fernandez-Hernandez, Fernando Gonzalez-Hernando, Asier Garcia-Bediaga, Irma Villar, Gonzalo Abad   +4 more
doaj   +1 more source

Capacitor Voltage Ripple Minimization of a Modular Three-Phase AC/DC Power Electronics Transformer With Four-Winding Power Channel

IEEE Access, 2020
Power electronic transformer (PET) with modular cascaded structure has become a flexible interface between AC and DC grids. Nonetheless, the notable 2nd-order ripple power introduced from the AC source requires considerable energy storage in the module ...
Xiaohui Li, Linqian Cheng, Liqun He, Zhongkui Zhu, Yong Yang, Cheng Wang   +5 more
doaj   +1 more source

Capacitor Lifetime Extension in a Hybrid Active Neutral-Point-Clamped Inverter With Reduction of DC-Link Ripple Current and Common-Mode Voltage

IEEE Access, 2021
This paper proposes a reduction method for DC-link ripple current and common-mode voltage (CMV) in a hybrid active neutral-point-clamped (ANPC) inverter. A Si and SiC hybrid ANPC inverter has been developed recently to overcome the extremely high cost of
Sang-Won An, Seok-Min Kim, Kyo-Beum Lee
doaj   +1 more source

Generalized diamond‐type single DC‐source switched‐capacitor based multilevel inverter with step‐up and natural voltage balancing capabilities

IET Power Electronics, 2021
This paper proposes a diamond‐shaped high step‐up switched‐capacitor based basic multilevel inverter topology. The basic switched‐capacitor (SC) stage consists of 2 active switches, 2 diodes, and 2 capacitors.
Saeid Deliri, Kazem Varesi, Yam P. Siwakoti, Frede Blaabjerg   +3 more
doaj   +1 more source

A high-reliability PV system by replacing electrolytic capacitors with film capacitors

Energy Reports, 2023
Electrolytic capacitors are considered a vulnerable link in PV systems. In order to enhance the system reliability and lifespan, this paper investigates a PV system without electrolytic capacitors. First, the system structure is introduced.
Wenping Zhang, Yiming Wang, Po Xu, Donghui Li, Baosong Liu   +4 more
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Capacitor voltage ripple suppression mechanism and control strategy for hexverter

Zhongguo dianli
At low-frequency operating conditions, the submodule capacitor voltage ripple in Hexverter increases significantly, leading to higher capacitance requirements and resulting in increased converter volume and cost. To alleviate the design constraints on DC
Jun SHU, Yang YI, Zhengfeng CHEN, Zhongpeng LU, Yiwei HUANG, Darui LIU, Yiming ZHANG   +6 more
doaj   +1 more source

A Modified Neutral-point Voltage Control Strategy for Three-level Inverters Based on Decomposition of Space Vector Diagram

CES Transactions on Electrical Machines and Systems, 2022
Capacitor voltage imbalance is a significant problem for three-level inverters. Due to the mid-point modulation of these inverter topologies, the neutral point potential moves up or down depending on the neutral point current direction creating ...
Dereje Woldegiorgis, H. Alan Mantooth
doaj   +1 more source