Results 21 to 30 of about 1,685,785 (203)

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

International 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, Davood Arab Khaburi   +1 more
doaj   +1 more source

A Comprehensive AC Current Ripple Analysis and Performance Enhancement via Discontinuous PWM in Three-Phase Four-Leg Grid-Connected Inverters

Energies, 2020
A complete analysis of the ac output current ripple in four-leg voltage source inverters considering multiple modulation schemes is provided. In detail, current ripple envelopes and peak-to-peak profiles have been determined in the whole fundamental ...
Riccardo Mandrioli, Aleksandr Viatkin, Manel Hammami, Mattia Ricco, Gabriele Grandi   +4 more
doaj   +1 more source

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

Machines, 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, Endika Robles, Iker Aretxabaleta, Iñigo Kortabarria, José Luis Martín   +4 more
doaj   +1 more source

A double‐modulation‐wave discontinuous pulse‐width‐modulation for dead‐time‐effect elimination and switching‐loss reduction in two‐level power converters

IET Power Electronics, 2023
High current qualities and high efficiencies are always two important characteristics for power converters. However, it is challenging to achieve the two targets simultaneously. In this paper, the dead‐time‐effect elimination pulse‐width‐modulation (PWM)
Qingzeng Yan, Zanrong Zhou, Mingbo Wu
doaj   +1 more source

A Study on Performance and Characteristic Analysis According to the Operating Point of IPMSM Drive

Energies, 2023
This study presents the characteristics and performance of a motor at the operating point based on pulse-width modulation (PWM). PWM is used in modulating the output voltage of a three-phase inverter.
Hyun-Jong Park, Han-Woong Ahn, Sung-Chul Go   +2 more
doaj   +1 more source

Global synchronous discontinuous pulse width modulation method with fast calculation capability for distributed three-phase inverters

Journal of Modern Power Systems and Clean Energy, 2016
When multiple distributed converters are integrated, the high frequency harmonics will randomly accumulate at the point of common coupling (PCC). This paper proposes a new fast global synchronous discontinuous pulse width modulation (GSDPWM) method of ...
Tao Xu, Ran Wei, Ke Zhou, Feng Gao
doaj   +1 more source

Spectral characterisation of nk pulse position modulation format [PDF]

, 2005
nk pulse position modulation (PPM) is a new modulation format that has recently been proposed for the optical wireless channel. This Letter considers, for the first time, a full spectral characterisation of -PPM and presents original expressions, which
Cryan, R.A., Menon, M.
core   +1 more source

Spectral characterisation of shortened pulse position modulation format [PDF]

, 2010
Shortened pulse position modulation (SPPM) is a new modulation format that has recently been proposed for underwater wireless optical communications. A full spectral characterisation of SPPM is considered and original expressions are presented, which ...
Cryan, R.A.
core   +1 more source

An Improved Modulation Strategy Combining Phase Shifted PWM and Phase Disposition PWM for Cascaded H-Bridge Inverters

Energies, 2017
: Multilevel modulation strategy is an important factor affecting the output performance of multilevel converters. In this paper, the relationship between phase-shifted pulse width modulation (PWM) and phase disposition PWM is analyzed, and then an ...
Muxuan Xiao, Qianming Xu, Honglin Ouyang
doaj   +1 more source

Discontinuous Space Vector PWM Strategy for Three-Phase Three-Level Electric Vehicle Traction Inverter Fed Two-Phase Load

World Electric Vehicle Journal, 2020
Discontinuous pulse width modulation (DPWM) strategies are usually adopted to reduce the switching loss and output current ripple of three-phase three-level traction inverters under three-phase load conditions. However, if there is a short circuit in any
Guozheng Zhang, Yuwei Wan, Zhixin Wang, Le Gao, Zhanqing Zhou, Qiang Geng   +5 more
doaj   +1 more source