Results 111 to 120 of about 816,421 (295)

Analysis and Calculation of DC-link Ripple for the Inverter in Electric Vehicle

open access: yesKongzhi Yu Xinxi Jishu, 2015
The performance of electric drive system for electric vehicle largely depends on the characteristics of DC-link capacitor in inverter, especially the abilities to absorb ripple current and ripple voltage of DC-link.
WU Chundong   +3 more
doaj  

A Ripple Reduction Technique for Single Stage Switched Capacitor Converter in Ultra Low-Power Applications

open access: yesIEEE Access
One of the primary concerns in the design and practical use of fully integrated switched capacitor (SC) DC-DC converters is their load-dependent output voltage ripple.
Rakshit Dambe Nayak   +4 more
doaj   +1 more source

Temporal Divergence of True and False Alarms in Pediatric Nocturnal Seizure Monitoring

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
The early‐morning surge in false seizure alarms supports exploring time‐ or state‐dependent detection thresholds to reduce false detections. ABSTRACT Seizure detection devices can improve the safety of children with epilepsy, yet high false alarms limit their clinical applicability.
Mohammad Shahbakhti   +6 more
wiley   +1 more source

Frequency/voltage convertor with low output ripple

open access: yesElectronics Letters, 1986
A circuit is desdribed which performs linear frequency-to-voltage conversion with nominally zero output ripple and, at one frequency, ideal step response. This is in contrast to conventional convertors which have large output ripple, the removal of which necessarily produces slow response.
openaire   +1 more source

Complementing Engel Classification: Postoperative Scalp EEG as an Objective Indicator in SEEG‐Guided Radiofrequency Thermocoagulation—A Seizure‐Onset Pattern‐Based Stratified Analysis—

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Stereoelectroencephalography‐guided radiofrequency thermocoagulation (SEEG‐RFTC) is a minimally invasive therapy for drug‐resistant focal epilepsy. However, the relationship between specific seizure‐onset patterns (SOPs), particularly low‐voltage fast activity (LVFA), and postoperative scalp EEG normalization remains inadequately ...
Yi‐qing Yang   +6 more
wiley   +1 more source

Capacitor Voltage Switching Ripple in Three-Phase Three-Level Neutral Point Clamped Inverters with Sinusoidal Carrier-Based PWM

open access: yes, 2018
This paper provides an extensive theoretical analysis of the capacitors voltage ripple for three-phase three-level neutral point clamped inverter topologies.
Manel Hammami   +5 more
core   +1 more source

Associations Between Biomarkers of Alzheimer's Disease and Sleep in Cognitively Unimpaired Older Adults

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Sleep disturbances have been implicated as a risk factor for developing Alzheimer's disease (AD), but evidence linking plasma AD biomarkers to sleep in cognitively unimpaired individuals remains limited. The present study examined associations between evening, morning, and overnight changes in plasma AD biomarkers and measures of ...
Cornelia Sauter   +5 more
wiley   +1 more source

Improving the Diagnostic Accuracy of Plasma Alzheimer's Disease Biomarkers With Objective and Subjective Cognitive Screening

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Blood‐based biomarkers are increasingly used to identify Alzheimer's disease (AD) pathology and may play an important role in early disease screening and participant selection for clinical trials. However, their performance across stages of cognitive impairment remains unclear. This study examined whether plasma biomarkers differ in
Maryam Abdolmaleki   +7 more
wiley   +1 more source

Beat-less Control Method for High-speed EMU

open access: yes机车电传动, 2020
Due to the application of the single-phase power supply mode in the traction drive system of high-speed EMU, the DC output voltage of the single-phase pulse rectifier is superimposed with an AC ripple voltage component which the frequency is twice the ...
Yong LIU   +4 more
doaj  

High-efficiency current-doubler rectifier with low output current ripple and high step-down voltage ratio

open access: yes, 2013
[[abstract]]This paper presents a current-doubler rectifier with low output current ripple and high step-down voltage ratio. In the proposed rectifier, two extra inductors are introduced to extend the duty ratio of the switches, which in turn reduces the
Cheng‐Tao Tsai   +2 more
core   +1 more source

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