Fast and silent MRI using nonlinear gradient fields at the ultrasonic gradient switching frequency of 20 kHz with a Point Spread Function framework reconstruction
Sign Up to like & getrecommendations! Published in 2024 at "Magnetic Resonance in Medicine"
DOI: 10.1002/mrm.30230
Abstract: To demonstrate the feasibility of using a nonlinear gradient field for spatial encoding at the ultrasonic switching frequency of 20 kHz and present a framework to reconstruct data acquired in this way. read more here.
Keywords: frequency khz; using nonlinear; switching frequency; gradient ... See more keywords
Constant Switching Frequency DTC for Matrix Converter Fed Speed Sensorless Induction Motor Drive
Sign Up to like & getrecommendations! Published in 2018 at "Journal of The Institution of Engineers (India): Series B"
DOI: 10.1007/s40031-018-0336-6
Abstract: The paper presents a constant switching frequency scheme for speed sensorless Direct Torque Control (DTC) of Matrix Converter fed Induction Motor Drive. The use of matrix converter facilitates improved power quality on input as well… read more here.
Keywords: switching frequency; speed; matrix converter; constant switching ... See more keywords
Calculation of the number of modules and the switching frequency of a modular multilevel converter using near level control
Sign Up to like & getrecommendations! Published in 2018 at "Electric Power Systems Research"
DOI: 10.1016/j.epsr.2018.08.019
Abstract: Abstract This paper is focused on the modular multilevel converter (MMC) topology that uses the near level control (NLC) method. Specifically, it addresses the relationship between the number of levels or switching modules, the switching… read more here.
Keywords: near level; modular multilevel; switching frequency; number ... See more keywords
Model predictive control with adjustable switching frequency for induction motor drives based on three‐dimensional satisfaction space optimisation
Sign Up to like & getrecommendations! Published in 2025 at "IET Electric Power Applications"
DOI: 10.1049/elp2.12547
Abstract: This paper proposes a model predictive control strategy for induction motors driven by three‐level inverters, enabling effective switching frequency adjustment. First, a three‐dimensional satisfaction space optimisation strategy is proposed, eliminating the need for weight coefficient… read more here.
Keywords: satisfaction space; switching frequency; optimisation; frequency ... See more keywords
Comparison of space vector and switching frequency optimal pulse width modulation for diode free F‐type multi level inverter
Sign Up to like & getrecommendations! Published in 2024 at "IET Power Electronics"
DOI: 10.1049/pel2.12795
Abstract: This study presents a comprehensive examination of space vector pulse width modulation (SVPWM) and switching frequency optimal PWM (SFOPWM) for an F‐type multilevel inverter (FTMLI). SVPWM offers a simple, digital implementation for three‐phase, three‐level inverter… read more here.
Keywords: inverter; switching frequency; space vector; pulse width ... See more keywords
Magnetic Signature Reduction by Converter Switching Frequency Modulation in Degaussing Systems
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3190616
Abstract: Ships can avoid to be detected by magnetic mines by reducing their magnetic signature with degaussing coils. Degaussing currents are provided by switched mode power supplies which impose a current ripple on top of the… read more here.
Keywords: frequency modulation; signature; magnetic signature; switching frequency ... See more keywords
Extended Overmodulation Operation of Space Vector PWM for Traction Motor Control at Low Switching Frequency
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3222082
Abstract: There are several benefits of fully utilization of DC link voltage in railway traction applications in terms of increasing inverter output voltage, satisfying power-torque demand and component sizing. To meet traction system requirements; mostly space… read more here.
Keywords: switching frequency; space vector; frequency; traction ... See more keywords
Analysis and Suppression of Harmonic Deteriorations Related to a Few-Submodule and Low-Switching-Frequency MMC-Based UPFC
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Access"
DOI: 10.1109/access.2024.3476143
Abstract: System efficiency, power quality, and economic benefits have always been essential for the Unified Power Flow Controller (UPFC based on a Modular Multilevel Converter (MMC). This paper proposes a low-switching-frequency MMC-UPFC operation scheme based on… read more here.
Keywords: frequency mmc; frequency; switching frequency; voltage ... See more keywords
Dynamic Inductor Switching and Frequency Control to Enhance Efficiency in Buck Converters for CubeSat EPS
Sign Up to like & getrecommendations! Published in 2025 at "IEEE Access"
DOI: 10.1109/access.2025.3584667
Abstract: The Electrical Power System (EPS) is a critical satellite subsystem that must meet mission requirements to operate effectively and ensure mission success, including supporting various operational modes during the required satellite lifetime. The power distribution… read more here.
Keywords: inductor switching; efficiency; switching frequency; dynamic inductor ... See more keywords
A Modified Flux Regulation Method to Minimize Switching Frequency and Improve DTC-Hysteresis-Based Induction Machines in Low-Speed Regions
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Journal of Emerging and Selected Topics in Power Electronics"
DOI: 10.1109/jestpe.2019.2897064
Abstract: Direct torque control (DTC) suffers from flux droop owing to the long zero-voltage vectors at low motor speeds. Previous studies were able to attain flux regulation by imposing the continuous switching of forward and reverse… read more here.
Keywords: dtc; flux regulation; switching frequency; method ... See more keywords
Optimal Variable Switching Frequency Scheme to Reduce Loss of Single-Phase Grid-Connected Inverter With Unipolar and Bipolar PWM
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Journal of Emerging and Selected Topics in Power Electronics"
DOI: 10.1109/jestpe.2019.2956034
Abstract: Reducing the power loss of a converter without increasing its volume or cost in hardware has always been a much sought-after but challenging goal. This article proposes a comprehensive variable switching frequency (VSF) scheme to… read more here.
Keywords: vsf scheme; scheme; loss; variable switching ... See more keywords