Results 21 to 30 of about 196 (100)

Direct Power Control of Pulsewidth Modulated Rectifiers Without DC Voltage Oscillations under Unbalanced Grid Conditions [PDF]

open access: yes, 2018
© 1982-2012 IEEE. Direct power control with space vector modulation (DPC-SVM) features simple structure, fast dynamic performance, and little tuning work.
Gao, J, Liu, J, Yang, H, Zhang, Y
core   +1 more source

Grid voltage sensorless model-based predictive power control of PWM rectifiers based on sliding mode virtual flux observer [PDF]

open access: yes, 2019
© 2013 IEEE. In this paper, a grid voltage sensorless model predictive control is proposed based on a sliding mode virtual flux observer (SMVFO). The proposed SMVFO shows good inherent filtering capacity, and thus there is no high-frequency chattering ...
Liang, J, Wang, H, Yan, Z
core   +1 more source

A TSF Control Strategy With Zero Voltage Modulation in Interval Segmented for Permanent Magnet-Assisted Switched Reluctance Motor

open access: yesIEEE Access
Aiming at the problems of large torque ripple in permanent magnet-assisted switched reluctance motor (PMa-SRM) under conventional voltage pulse width modulation (PWM) method.
Chaozhi Huang   +3 more
doaj   +1 more source

Sensorless Predictive Direct Power Control PDPC_SVM For PWM Converter Under Different Input Voltage Conditions [PDF]

open access: yes, 2020
In this paper, a new virtual flux (VF) based predictive direct power control (VF_PDPC) applied for three-phase pulse width modulation (PWM) rectifier is proposed.
Boukadoum, Ahcen   +3 more
core   +2 more sources

A Lyapunov-Based Nonlinear Power Control Algorithm for Grid-Connected VSCs [PDF]

open access: yes, 2021
For grid-connected voltage-source converters (VSCs), it is commonly required that its power outputs can track the power references given by operators under various grid conditions.
Fan, Bo, Wang, Xiongfei
core   +2 more sources

Predictive-DPC Based on Duty Cycle Control of PWM Rectifier under Unbalanced Network [PDF]

open access: yes, 2022
This work proposes a predictive direct power control (P-DPC) technique of a PWM rectifier, based on a duty cycle control method, using a new definition of the instantaneous reactive power in the predefined cost function, able to operate under balanced ...
Hartani, Kada   +2 more
core   +1 more source

Cash‐holding Benefits and Their Influence on Seasoned Equity Offering Decisions

open access: yesAbacus, EarlyView.
This study investigates the cash‐holding motivations of issuers with excess cash. It aims to explain why these issuers choose to accumulate even more cash through stock issuances rather than utilize their existing surplus. I assess three competing cash‐holding motivation hypotheses: whether issuers raise cash: (i) to fund the needs of future growth ...
Ebrahim Bazrafshan
wiley   +1 more source

New Modeling and Improved Current Control Strategy to Eliminate the Impact of Synchronization Method and Parks Transformation for Grid-connected Four-leg PWM Inverter [PDF]

open access: yes, 2023
The synchronization method’s ability is one of the fundamental guarantees for the stability and accuracy of injected current control for grid-connected converter-based distribution resources. These synchronization methods, such as phase locked loop (PLL),
Al-Dwa , Ala Addin Mohammed   +3 more
core   +1 more source

A Comprehensive Review on Grid-forming Inverter: Potential and Future Trends [PDF]

open access: yes, 2023
There is growing commitment to phase-out the conventional fossil-fuel based power stations to decentralized power generation with high share of renewable energy sources that is based on low-emission to meet the various techno-economic, environmental and ...
ADAMU ABUBAKAR, SAMUEL YUSUF
core   +2 more sources

Optimal timing to assess exercise‐induced oxidative stress: A systematic review and meta‐analysis

open access: yesExperimental Physiology, EarlyView.
Abstract There is a lack of consensus on optimal timing to assess redox biomarkers post‐exercise, limiting methodological standardisation and linking oxidative stress to physiology. We determined optimal post‐exercise oxidative stress assessment times using three redox biomarkers: glutathione, F2‐isoprostanes and protein carbonyls.
Chrysovalantis Stachteas   +12 more
wiley   +1 more source

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