Results 31 to 40 of about 1,230,070 (216)

Junction Temperature Control System to Increase the Lifetime of IGBT-Power-Modules in Synchronous Motor Drives Without Affecting Torque and Speed

open access: yesIEEE Open Journal of Power Electronics, 2020
Load changes of electrical machines driven by inverters cause temperature swings of the semiconductor devices in IGBT modules of the inverters. These temperature swings lead to mechanical strain in the different material layers of the IGBT-power-modules ...
Julian Wolfle   +3 more
doaj   +1 more source

Transformer-Based Power Conversion System with Synchronous Adjustment of Modulated Inverters [PDF]

open access: yesProblems of the Regional Energetics, 2018
Purpose of this work – dissemination of specialized schemes of space-vector modulation for synchronous adjustment of multi-inverter system with power transformer.
Oleschuk V.
doaj   +1 more source

Discontinuous PWM Modulation for Active Power Filters Operating in Disturbed Environments [PDF]

open access: yes, 2023
Active power filters (APFs) are power converters able to compensate for the distorted current components injected into the mains by non-linear loads. To reduce the APF switching losses and thus to allow using higher switching frequencies, discontinuous ...
Mallemaci, Vincenzo   +3 more
core   +1 more source

Discontinuous Pulse Width Modulation In Flux Angle Control Of Induction Motors [PDF]

open access: yesInternational Journal of Research and Technology in Electrical Industry
In this study, flux angle control (FAC) with discontinuous modulation is presented for induction motor drives with the aim of optimizing motor and inverter losses under light load conditions.
Mohammad Reza Mohebbi   +1 more
doaj   +1 more source

Observation of discontinuities in the periodic modulation of PSR B1828−11 [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society
ABSTRACT PSR B1828–11 is a radio pulsar that undergoes periodic modulations (∼500 d) of its spin-down rate and beamwidth, providing a valuable opportunity to understand the rotational dynamics of neutron stars. The periodic modulations have previously been attributed to planetary companion(s), precession, or magnetospheric effects and ...
Adriana Dias   +4 more
openaire   +2 more sources

Proposal of Hybrid Discontinuous PWM Technique for Five-Phase Inverters under Open-Phase Fault Operation

open access: yesMachines, 2023
One of the most common issues in inverters are open-circuit faults (OPF). In this scenario, a proper fault-tolerant technique must be used to improve the motor performance.
Markel Fernandez   +4 more
doaj   +1 more source

Sector Subdivision Based SVPWM Strategy of Neutral-Point-Clamped Three-Level Inverter for Current Ripple Reduction

open access: yesEnergies, 2019
This paper presents a sector subdivision based space vector pulse width modulation (SVPWM) strategy with reduced current ripple for a three-level inverter.
Guozheng Zhang   +5 more
doaj   +1 more source

Torque Ripple Reduction for BLDC Permanent Magnet Motor Drive Using DC-Link Voltage and Current Modulation

open access: yesIEEE Access, 2022
This paper proposes a torque ripple reduction for brushless DC (BLDC) permanent magnetic (PM) motor drive based on the DC-link voltage pulse amplitude modulation (PAM).
Ching-Lon Huang   +5 more
doaj   +1 more source

Hybrid Space Vector PWM Strategy for Three-Phase VIENNA Rectifiers

open access: yesSensors, 2022
Vienna rectifiers are widely used, but they have problems of zero-crossing current distortion and midpoint potential imbalance. In this paper, an improved hybrid modulation strategy is proposed.
Yaodong Wang   +3 more
doaj   +1 more source

Optimization of TSPWM for Common-Mode Voltage Reduction in Vehicular Electric Drive System

open access: yesWorld Electric Vehicle Journal, 2021
Common-mode voltage can be reduced effectively by optimized modulation methods without increasing additional costs. However, the existing methods cannot satisfy the requirements of the vehicular electric-drive application.
Shang Jiang, Yuan Wang
doaj   +1 more source

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