Results 51 to 60 of about 688 (209)

Research on double transistor open circuit fault diagnosis of T‐type three level rectifier based on mixed logical dynamical model

IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.
In this paper, we proposed an open circuit fault diagnosis method based on mixed logical dynamical model. The experiment verified the effectiveness and feasibility of the fault diagnosis algorithm and reduced fault diagnosis time without increasing algorithm complexity. Abstract The T‐type three‐level rectifier has garnered significant attention due to
Jianyuan Wang, Yuxiang Liu, Dongsheng Yuan, Cong Liu, Kaiyue Zuo   +4 more
wiley   +1 more source

Performance Analysis of Various Three‐Phase Hybrid Transformerless Inverter Configurations

IET Power Electronics, Volume 18, Issue 1, January/December 2025.
This study investigates hybrid transformerless inverter topologies for grid‐connected solar PV systems, focusing on minimising leakage current (LC) and maintaining common‐mode voltage (CMV) stability. A modified discontinuous pulse width modulation technique is proposed to reduce switching losses and enhance reactive power handling.
Amit Kumar, Suganthi Ramasamy, Michele Losito, Gianluca Gatto   +3 more
wiley   +1 more source

A Wireless Drive and Control Method for Robots: Multifrequency Microwaves

Advanced Intelligent Systems, Volume 6, Issue 11, November 2024.
Herein, a new wireless driving and control method for robots based on multifrequency microwaves is introduced. A millimeter‐scale pipeline robot, constructed using shape memory alloy, is designed and fabricated using this method. This innovative method has the unique application potential in confined environments, providing new insights into the ...
Yongze Li, Jianyu Wu, Lijun Zhao, Zhiguang Xing, Jianwen Zhao   +4 more
wiley   +1 more source

Research on current sharing control of parallel inverters used on electric motor emulator

IET Electric Power Applications, Volume 18, Issue 11, Page 1448-1457, November 2024.
In order to suppress circulating currents, this paper proposes a circulating current suppression method that combines hardware and software systems, adopting a cascaded coupled output network structure, along with error voltage feedforward control to achieve circulating current suppression.
Mingyu Wang, Beining Yang, Yaru Qin, Yonglun Jiang   +3 more
wiley   +1 more source

Hybrid Linearized Class-BD Double Sided (LBDD) Digital Pulse Width Modulator (DPWM) for Class-BD Audio Amplifiers

, 2017
The paper presents an original architecture and implementation of 9-bit LBDD hybrid DPWM circuit for Class-BD digital audio amplifier. The input PCM signals are directly transformed into 24-bit LBDD DPWM signals and then are requanized to the 9-bit ...
Stanisław Kuta, Wojciech Kołodziejski, Kołodziejski, W., Kuta, S., Jasielski, J., Jacek Jasielski   +5 more
core   +1 more source

A Carrier-based Two-Phase-Clamped DPWM Strategy With Zero-Sequence Voltage Injection for Three-Phase Quasi-Two-Stage Buck-Type Rectifiers

, 2022
A three-phase buck-type rectifier features a step-down ac-dc conversion function, which is considered as a prominent solution for electric vehicle chargers and telecommunication systems integrated to the grid above 380 V line to line.
Gao, Fei (author), Bauer, P. (author), Soeiro, Thiago B. (author), Xu, J. (author), Tang, Houjun (author), Wu, Y. (author), Wang, Y. (author)   +6 more
core   +1 more source

Three-Phase inverter Controlled by ISCPWM and DPWM-S1

Elektronika ir Elektrotechnika, 2012
This paper presents the implementation of the ISCPWM-DPWM-S1 control technique on a microcontroller. This technique was developed due to the modulation of a discontinuous signal DPWM-S1 with an inverted sinusoidal signal ISCPWM. Good results were obtained for the switching losses on the power transistors, which are lower, and for the amplitudes of the ...
C. Aghion, O. Ursaru
openaire   +1 more source

ADC Quantization Effects in Two-Loop Digital Current Controlled DC-DC Power Converters: Analysis and Design Guidelines

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, Carlos Restrepo, Roberto Giral, Enric Vidal-Idiarte, Javier Calvente   +4 more
doaj   +1 more source

Model predictive control of 3L‐NPC inverter to enhance fault ride through capability under unbalanced grid conditions

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, Ameen Gargoom, M. T. Arif, Md. Enamul Haque   +3 more
wiley   +1 more source

A novel partitioned hybrid PWM strategy to reduce the common‐mode voltage in three‐level neutral‐point‐clamped inverters

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