Results 31 to 40 of about 2,216,872 (294)

Investigation of the Effect of Operating Conditions on Reliability of DC-link Capacitors in Microgrids [PDF]

2020 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe), 2020
This paper considers a microgrid system where the impact of different non-ideal operating conditions on the reliability of the DC-link capacitor in three phase inverter systems is investigated. Rather than focusing on the lifetime of the capacitor, its failure rate is investigated and deemed a valuable indicator of the system’s reliability. The thermal
Berg, Sondre Johan Kjellin, Vadlamudi, Vijay Venu, Göthner, Fredrik T. B. W., Peftitsis, Dimosthenis   +3 more
openaire   +3 more sources

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

, 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, null null, Nanjun Lu
core   +1 more source

Implantable Ionic Memristors Based on Natural Polymer Heterojunctions

Advanced Functional Materials, EarlyView.
We report an implantable natural polymer‐based ionic memristor composed of hyaluronic acid, chitosan, and PDMS. The device achieved 98.94% accuracy in MNIST classification while reducing training time by 36.8% compared with a conventional artificial neural network (ANN).
Dong‐yup Lee, Byung Ik Park, Gihyeon Yim, Hyunjae Yoo, Sangjun Ma, Jundong Park, Jeong‐Yun Sun   +6 more
wiley   +1 more source

Light‐Induced Field‐Tunneling Synapses in Solution‐Processed Van Der Waals Heterostructures for Scalable, Retina‐Inspired Optical Sensing

Advanced Functional Materials, EarlyView.
A scalable, solution‐processed WSe2/ZrO2‐x van der Waals heterostructure realizes a light‐induced field‐tunneling synapse (LIFTS) that activates exclusively under bright illumination, emulating the photopic adaptation of the human retina at the device level.
Kijeong Nam, Jihyun Kim, Soobeen Ji, In Soo Kim, Sejin Kim, Eungseon Yeon, Do Kyung Hwang, Iva Plutnarová, Zdeněk Sofer, Sang Min Won, Joohoon Kang   +10 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

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

Design of neutral-point voltage controller of a three-level NPC inverter with small DC-link capacitors

, 2013
A neutral-point-clamped three-level inverter with small dc-link capacitors is presented in this paper. The inverter requires zero average neutral-point current for stable neutral–point voltage.
Busquets-Monge, S., Munk-Nielsen, Stig, Munk-Nielsen, Stig; id_orcid, Busquets Monge, Sergio, Maheshwari, Ram Krishan, Maheshwari, RamKrishan   +5 more
core   +1 more source

Memristive‐Gated RC‐Delay Synaptic Transistors for Time‐Encoded Analog in‐Memory Computing

Advanced Functional Materials, EarlyView.
A Memristive‐Gated Transistor for Time‐Encoded Analog In‐Memory Computing — By exploiting the RC delay of a self‐rectifying interface‐type memristor, nonlinear I–V distortion is structurally bypassed, enabling 3‐bit nonvolatile memory, spike‐timing‐based analog encoding, and hardware‐calibrated reservoir‐computing validation within a unified device ...
Yun‐Seo Shin, Eunjoo Yoo, Ki‐Hoon Son, Hyun‐Sik Kim, Dae‐Hee Han, Jeong Hyeon Son, Seung Hwan Lee, Hong‐Sub Lee   +7 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