Results 41 to 50 of about 33,571 (305)

A Harmonic Voltage Injection Based DC-Link Imbalance Compensation Technique for Single-Phase Three-Level Neutral-Point-Clamped (NPC) Inverters

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, Younghoon Cho, Myung-Hyo Ryu, Ju-Won Baek   +3 more
doaj   +1 more source

Reduction of torque ripple in an electrolytic capacitor-less BLDC motor drive by simultaneous speed and torque control method

Ain Shams Engineering Journal, 2021
Brushless DC motors have been widely used in both industrial and non-industrial applications. Commercialization of these drives by reducing their price and increasing reliability, are among the main goals of manufacturers and researchers.
Ehsan Boloor Kashani, Abolfazl Halvaei Niasar   +1 more
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
Adam, G.P., Anaya-Lara, O., Burt, G.M., Finney, S.J., McDonald, J.R., Williams, B.W.   +5 more
core  

A back to back multilevel converter for driving low inductance brushless AC machines [PDF]

, 2007
Traditionally, multilevel converters are utilised in medium voltage applications, allowing the DC-link voltage to exceed the switch maximum blocking voltage.
Bingham, Chris, Foster, M. P., Minshull, S., Stone, D. A.   +3 more
core   +1 more source

A Thermodynamic 3D Model for the Simulation of Diffusion‐Controlled Alloying Processes in Heterogeneous Material Structures

Advanced Engineering Materials, EarlyView.
A numerical model resulting from irreversible thermodynamics for describing transport processes is introduced, focusing on thermodynamic activity gradients as the actual driving force for diffusion. Implemented in CUDA C++ and using CalPhaD methods for determining the necessary activity data, the model accurately simulates interdiffusion in aluminum ...
Ulrich Holländer, Leonhard Holländer, André Langohr, Hans Jürgen Maier   +3 more
wiley   +1 more source

Baseline for Split DC Link Design in Three-Phase Three-Level Converters Operating with Unity Power Factor Based on Low-Frequency Partial Voltage Oscillations

Machines, 2022
The study sets a baseline for split DC link capacitance values and voltage set points in three-phase three-level AC/DC (or DC/AC) converters operating with unity power factor.
Yarden Siton, Vladimir Yuhimenko, Dmitry Baimel, Alon Kuperman   +3 more
doaj   +1 more source

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

Advanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho, M. Naeem, T. H. C. Costa, M. S. Libório, J. C. A. Queiroz, C. B. B. Luna, R. R. M. Sousa, P. S. Vieira, E. M. Araújo   +8 more
wiley   +1 more source

Peak-Zero-DPWM for Improving Performance of Single-Phase Five-Level T-Type NPC Inverter

IEEE Access
The discontinuous pulse width modulation (DPWM) improves the efficiency and reliability of power devices by reducing the switching losses. However, it aggravates the Total Harmonic Distortion (THD) of outputs and the reliability of DC-link capacitors ...
Taerim Ryu, Ui-Min Choi
doaj   +1 more source

Onboard Battery Chargers for Plug-in Electric Vehicles With Dual Functional Circuit for Low-Voltage Battery Charging and Active Power Decoupling

IEEE Access, 2018
This paper proposes a single-phase onboard battery charger (OBC) for plug-in electric vehicles, where the low-voltage (LV) battery charging circuit is utilized for an active power decoupling function.
Hoang Vu Nguyen, Dinh-Du To, Dong-Choon Lee   +2 more
doaj   +1 more source

A plug-and-play ripple mitigation approach for DC-links in hybrid systems [PDF]

, 2016
© 2016 IEEE.In this paper, a plug-and-play ripple mitigation technique is proposed. It requires only the sensing of the DC-link voltage and can operate fully independently to remove the low-frequency voltage ripple. The proposed technique is nonintrusive
Hui, SY, Lee, ATL, Li, S, Siew-Chong-Tan
core   +1 more source