Results 271 to 280 of about 425,800 (302)

Critical Conduction Mode Boost PFC Converter With Fixed Switching Frequency Control

IEEE Transactions on Power Electronics, 2018
Critical conduction mode (CRM) boost power factor (PF) correction converter features zero-current turn-on for the switch and no reverse recovery in diode, which is suitable for low-to-medium power applications. However, the switching frequency varies in a line cycle, and the wide variation range of the switching frequency is different under different ...
Kai Yao, Yi Wang, Jian Guo, Kaili Chen
openaire   +1 more source

A Converter with Fixed Switching Frequency Adaptive Multi-Mode Control Scheme

2007 IEEE International Symposium on Circuits and Systems, 2007
A multi-mode adaptive control scheme to achieve high conversion efficiency over wide load range is presented in this paper. The presented controller results in improved efficiency while operating at a fixed switching frequency which guarantees maintained steady-state and dynamic performance at all load conditions. This is achieved by operating in three
Jaber A. Abu Qahouq, Lilly Huang
openaire   +1 more source

Digitally-controlled PWM inverter modulatedby multi-randomtechnique with fixed switching frequency

IEE Proceedings - Electric Power Applications, 2001
A digitally controlled PWM inverter, modulated by a multi-random technique with a single fixed switching frequency, is proposed for uninterruptible power supplies. Multi-random pulsewidth modulation utilises a random phase-shift PWM scheme and a random pulse position PWM scheme, both driven at the same switching frequency.
J.L. Shyu, T.J. Liang, J.F. Chen
openaire   +1 more source

Fixed Switching Frequency Sliding Mode Control for Single-Phase Unipolar Inverters

IEEE Transactions on Power Electronics, 2012
Sliding mode control (SMC) is recognized as robust controller with a high stability in a wide range of operating conditions, although it suffers from chattering problem. In addition, it cannot be directly applied to multiswitches power converters. In this paper, a high performance and fixed switching frequency sliding mode controller is proposed for a ...
Adib Abrishamifar, Ahmad Ahmad, Mustafa Mohamadian   +2 more
openaire   +1 more source

Step-Up Series-Resonant DC-DC Converter with Switched Mode Rectifier Operating at Fixed Switching Frequency

2020 IEEE 11th International Symposium on Power Electronics for Distributed Generation Systems (PEDG), 2020
This paper studies the feasibility of voltage step-up implementation of the series-resonant dc-dc converters employing the switched mode rectifier. The semi-active rectifier utilized at the output side of the converter enables the boost regulation of the input voltage. The proposed solution provides an alternative to the existing topologies where twice
Andrii Chub, Abualkasim Bakeer, Dmitri Vinnikov   +2 more
openaire   +1 more source

A comparison of fixed-frequency soft-switching phase-shifted PWM converters

2011 IEEE GCC Conference and Exhibition (GCC), 2011
This paper compares three soft-switched fixed-frequency high-frequency transformer isolated DC-DC converters designed for the given specifications. Three configurations compared are (a) phase-shifted PWM full bridge converter, (b) hybrid phase-modulated converter (HPMC) with inductive output filter, and (c) HPMC with capacitive output filter.
Ashoka Bhat, Sriram Jala
openaire   +1 more source

Analysis and design of single-switch fixed frequency quasi-square-wave zero-current switching converters

Proceedings of Intelec 94, 2002
A family of single-switch fixed frequency zero-current-switching (ZCS) power converters having lossless switching and low output ripple using a coupled inductor are proposed. The operating principle is illustrated by the different operating modes and the state-space analysis of a modified ZCS fixed frequency buck power converter.
J. Wang, A.K.S. Bhat
openaire   +1 more source

Effect of sweep frequency ultrasound and fixed frequency ultrasound thawing on gelling properties of myofibrillar protein from quick-frozen small yellow croaker and its possible mechanisms

LWT - Food Science and Technology, 2021
Jing-Kun Yan, Haile
exaly  

Fixed Switching Frequency Hybrid Modulation With ZVS for Single-Phase Inverter

IEEE Transactions on Power Electronics, 2023
Jiayu Hu, Qianming Xu, Peng Guo, Hongliang Wang, Zhixing He, Yandong Chen, An Luo   +6 more
openaire   +1 more source

A Novel Distributed-Decentralized Fixed-Time Optimal Frequency and Excitation Control Framework in a Nonlinear Network-Preserving Power System

IEEE Transactions on Power Systems, 2021
Ziqiang Wang, Jie Wang, Massimo La Scala
exaly