Results 41 to 50 of about 1,684,593 (114)

Pulse-Amplitude-Modulation Full-Bridge Diode-Clamped Multilevel LLC Resonant Converter Using Multi-Neighboring Reference Vector Discontinuous PWM

Energies, 2022
A full-bridge diode-clamped multilevel LLC resonant converter suitable for power conversion systems that use high input voltage, such as railway vehicles, is proposed in this paper. In order to eliminate the voltage deviations of the capacitors connected
Min-Sup Song, Jae-Bum Lee
doaj   +1 more source

Feasible Operating Boundary Extraction for MW‐Class SiC Inverters in High‐Speed Drives

IET Power Electronics, Volume 19, Issue 1, January/December 2026.
This paper develops a unified electrothermal framework to extract feasible operating boundaries for megawatt‐class silicon carbide inverters used in high‐speed drives. Two‐level, T‐type neutral‐point‐clamped, and active neutral‐point‐clamped topologies are compared at 800 and 1500 volts under simultaneous efficiency, junction‐temperature, and current ...
Deepak Upadhyay, Aleksi Mattsson, Pasi Peltoniemi   +2 more
wiley   +1 more source

A Comprehensive Approach to Pulse Modulation for Attitude Control with Thrusters Subject to Switching Restrictions [PDF]

, 2005
A pulse modulation scheme based on two modulation curves is proposed for applications in spacecraft attitude control using thrusters which may be subject to switching restrictions.
Bals, Johann, Kienitz, Karl Heinz
core  

An DPWM for Active DC-Link Type Quasi-Z-Source Inverter to Reduce Component Voltage Rating

Energies, 2022
The conventional DC-link type quasi-Z-source inverter has been known as a buck–boost inverter with a low component voltage rating. This paper proposes an active DC-link type quasi-Z-source inverter by adding one active switch and one diode to the ...
Duc-Tri Do, Vinh-Thanh Tran, Khai Nguyen
doaj   +1 more source

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

Optimized Synchronous Pulse Width Modulation Strategy Based on Discontinuous Carriers

, 2023
This article proposes a new technique called optimized discontinuous carrier pulse width modulation (ODCPWM), whose main objective is to solve the issue of significant output voltage harmonics of conventional synchronous carrier modulation at low carrier
Xuefeng Jin, Jiahao Liu, Wei Chen, Tingna Shi   +3 more
core   +1 more source

Power Factor Adaptive DPWM Control Strategy for T-Type Three-Level Inverters

Energies
With the widespread application of multilevel inverters, device losses have become a critical area of research. A key limitation of conventional three-level discontinuous pulse width modulation (DPWM) strategies is their inability to maintain switching ...
Jialiang Tian, Yingying Xu, Mingxia Xu, Zhenjiang Liu, Yuchi Zhou   +4 more
doaj   +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

Multi-Physics Characteristics of PMSM for Compressor According to Driving Mode Considering PWM Frequency

IEEE Access, 2022
When pulse width modulation (PWM) technique is used for permanent magnet synchronous motors (PMSMs) for compressors, current harmonics in the carrier frequency domain are inevitably generated.
Chi-Sung Park, Jae-Hyun Kim, Soo-Hwan Park, Young-Doo Yoon, Myung-Seop Lim   +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