Results 61 to 70 of about 829 (203)
Applied Sciences, 2020 This paper analyzes the presence of undesired quantization-induced perturbations (QIP) in a dc-dc buck-boost converter using a two-loop digital current control.
Catalina González-Castaño +4 more
doaj +1 more source
IET Power Electronics, Volume 17, Issue 14, Page 1973-1985, 4 November 2024.Using a high‐gain band‐pass filter, oscillations in the synchronous frame current measurements under unbalanced grid voltages are utilised to suppress current THD, and provide current limiting during severe faults. Active power ripple suppression is realised through dynamic gains on current measurements for each phase according to the relative voltage ...
Cameron Smith +3 more
wiley +1 more source
IET Power Electronics, Volume 17, Issue 15, Page 2344-2357, 25 November 2024.The proposed partitioned hybrid PWM strategy can restrict the common‐mode voltage within 1/6 of the DC voltage, while it makes a balance with the THD of the three‐phase current waveforms and the loss of the three‐level inverter compared to the conventional PWM strategy.
Cheng Song, Libo Wang, Jinhua Du
wiley +1 more source
M3D‐DPWM strategy for three‐phase four‐leg inverter with higher harmonic suppression capability
IET Power Electronics, Volume 17, Issue 15, Page 2369-2379, 25 November 2024.In this study, a modified 3D discontinuous pulse‐width modulation (M3D‐DPWM) strategy is proposed based on 3D‐SVPWM, By changing the sequence of reference voltage vector synthesis and reducing switching mode, the output phase voltage period is reduced to half of the original without changing the fundamental properties and adding additional circuits ...
Ning Li +4 more
wiley +1 more source
A Novel Carrier Scheme Combined with DPWM Technique in a ZVS Grid-Connected Three-Phase Inverter
, 2022 In this paper, a novel switching scheme using discontinuous pulse-width modulation (DPWM) for a zero-voltage switching (ZVS) grid-connected three-phase inverter is proposed. ZVS in the main and auxiliary switches was achieved.
Yi-Hung Liao, Jiong-Ye Chen, Ying Zhou
core +1 more source
IET Power Electronics, Volume 17, Issue 13, Page 1621-1631, 14 October 2024.An incremental predictive control strategy based on unipolar pulse width modulation (PWM) is proposed in the non‐commutation interval to double the current ripple frequency, which can reduce the current ripple. On this basis, the prediction equations of adjacent control periods are subtracted to eliminate the influence of non‐ideal back‐electromotive ...
Chong Zeng +3 more
wiley +1 more source
Energies, 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
Novel clamping modulation for three‐phase buck‐boost ac choppers
Electronics Letters, Volume 60, Issue 13, July 2024.Three‐phase ac choppers feature output voltage amplitude controllability and enable more compact system realizations compared to autotransformers. However, these systems suffer from offset voltage drift, which was so far addressed by means of lossy discharge resistors. This paper proposes and verifies experimentally a novel clamping modulation ensuring
David Menzi +3 more
wiley +1 more source
Design of Control System for 5MW Medium Voltage Direct-Driven Wind Power Converter
Journal of Harbin University of Science and Technology, 2018 The diode threelevel neutralpointclamped (3LNPC) converter with full power is a promising multilevel topology in the application of wind power generation system.
DENG Xiao-xiang, DAI Chao-fan
doaj +1 more source
IET Electric Power Applications, Volume 18, Issue 5, Page 527-542, May 2024.A programmed hybrid spreading spectrum modulation method to mitigate electromagnetic interference (EMI) emission in the context of miniaturised and lightweight synchronous machine drives is proposed. The proposed method is well‐suited for controlling synchronous motors using three‐phase two‐level voltage source inverters.
Hongtai Ma +5 more
wiley +1 more source