Results 81 to 90 of about 500 (164)

Frequency estimation techniques in capacitance-to-frequency conversion measurement

, 2020
The process of capacitance measurement consists of converting the capacitance under measurement into a secondary variable such as voltage, time-period, and frequency.
Tushar Tyagi, P. Sumathi, Sumathi, P., Tyagi, Tushar   +3 more
core   +1 more source

A Modified Reduced-Order Generalized Integrator–Frequency-Locked Loop-Based Sensorless Vector Control Scheme Including the Maximum Power Point Tracking Algorithm for Grid-Connected Squirrel-Cage Induction Generator Wind Turbine Systems

Inventions
In this paper, an improved speed sensorless control method including the maximum power point tracking (MPPT) algorithm for grid-connected squirrel-cage induction generator (SCIG) wind turbine systems using modified reduced-order generalized integrator ...
Tuynh Van Pham, Anh Tan Nguyen
doaj   +1 more source

Design of voltage-controlled oscillator and reference voltage/current source in 180-nm CMOS technology for applications in frequency-locked loops

, 2022
Oblikovanje dijelova frekvencijsko sinkronizirane petlje (FLL) zvani ”Naponsko upravljani oscilator” i ”Generator referentne struje” u 180 nm CMOS integriranoj tehnologiji.
Žamboki, Andro
core  

A discrete-time frequency-locked loop for single-phase grid synchronization under harmonic distortion

, 2020
This article presents a discrete-time frequency-locked-loop (FLL) scheme that estimates the in-phase fundamental component of a distorted single-phase reference signal and its fundamental angular frequency.
Mayo-Maldonado, Jonathan C., Puerto-Flores, Dunstano Del, Escobar, Gerardo, Valdez-Resendiz, Jesus E., Micheloud-Vernackt, Osvaldo Miguel   +4 more
core   +1 more source

A Reconfigurable Tri-Mode Frequency-Locked Loop Readout Circuit for Biosensor Interfaces. [PDF]

IEEE Trans Biomed Circuits Syst, 2023
Yu S, Chou TH, Bose S, Cook J, Park J, Johnston ML.   +5 more
europepmc   +1 more source

Enhanced Voltage Sensorless Control for a PWM Converter with DSOGI-FLL Under Grid Disturbances

Energies
This paper presents Enhanced Voltage Sensorless Control for PWM converter with DSOGI-FLL under grid disturbances. Even without grid voltage sensors, the proposed method accurately estimates the grid angle and voltage, which are necessary for power ...
Seung-Pyo Kang, Dong-Youn Kim, Jang-Mok Kim   +2 more
doaj   +1 more source

A Vital-Sign Sensor using Frequency-Locked Loop Technique

, 2019
This thesis presents a non-contact vital sign sensing system that use a frequency- locked loop (FLL) to improve the signal-to-noise ratio (SNR). The vital signs are the phase change caused by the small movement of the chest. The small movement comes from
Chen, Xiang-En
core  

A Frequency Locked-Loop with Reduced Tuning Complexity for Single-Phase Grid-Tied System with Inherent DC-Offset Rejection Capability

To ensure the high performance of grid-connected systems, a synchronization unit plays a crucial role. The frequency-locked loop (FLL) has gained popularity for the synchronization and control of grid-tied converters in recent times.
Stickan, Benjamin, Hassan, Faridul, Pati, Avadh, Kumar, Amritesh   +3 more
core   +1 more source

Single-phase frequency-locked loops:A comprehensive review

, 2019
Synchronization techniques can be classified into open-loop and closed-loop methods. In power and energy applications, which are the focus here, the latter type is more popular.
Guerrero, Josep M.; id_orcid, Vasquez, Juan C.; id_orcid, Golestan, Saeed; id_orcid, Musavi, Fariborz   +3 more
core   +1 more source

DTFT-based frequency lock loop for GNSS applications

, 2006
Precise frequency estimation is one of the most stringent constraints for Global Navigation Satellite System (GNSS) receivers, that generally uses a Frequency Locked Loop (FLL) to provide a reliable evaluation of the Doppler frequency of the received ...
Camoriano L., LO PRESTI, Letizia, BORIO, DANIELE, FANTINO, MAURIZIO   +3 more
core   +1 more source