Results 81 to 90 of about 5,902,702 (138)

Ac-dc power converter with power factor correction

, 2020
The present invention relates to an AC-DC power converter which comprises a resonant DC-DC converter and a charge pump circuit. The charge pump circuit is configured to perform power factor correction of the AC-DC power converter by drawing current ...
Knott, Arnold, Ammar, Ahmed Morsi, Nour, Yasser A. A   +2 more
core  

Enhanced Secondary Control for Power/Current Sharing in DC Microgrids Considering Communication‐Links Failures and Current and Voltage‐Controlled Converters

IET Renewable Power Generation
The stable operation of DC microgrids requires robust secondary control strategies capable of ensuring accurate power sharing and bus voltage regulation, even under adverse conditions.
Juliana C. Neves, Rafaela D. Silveira, Sergio A. O. da Silva, Leonardo P. Sampaio, Sebastián de J. Manrique Machado   +4 more
doaj   +1 more source

POWER-FREQUENCY INTERACTIONS IN AN AC/DC/AC SYSTEM [PDF]

, 1976
A study of power-frequency interactions in an AC/DC/AC system is presented in this thesis. The selected system consists of three connected hydro-electric generating stations, which transmit power to a receiving AC system over two HVDC bipolar ...
Bennett, Murray Gordon
core  

A CC/VC‐based power tracking method for photovoltaic inverter operated in voltage control mode

IET Power Electronics
The active power control of photovoltaic (PV) inverters without energy storage can flatten the fluctuating power and support the voltage amplitude and frequency of the grid.
ZhenXiong Wang, Yingjie Peng, Hao Yi, Wei Zhang, Jingting Wu, Qiru Li, Fang Zhuo   +6 more
doaj   +1 more source

Single-stage multiport AC–DC–DC converter with reactive power control capability

This article introduces a single-stage three-port ac–dc–dc converter designed to overcome the limitations observed in conventional two-stage converters used in grid-tied applications with multiple dc sources, such as hybrid energy storage systems and ...
Sun, Tengfei, He, Zhou, Deng, Fei, Xiao, Ziheng, Pan, Xuewei, Tang, Yi   +5 more
core   +1 more source

GaN‐Based Three‐Phase Voltage and Current Sources for Power Relay Testing

IET Power Electronics
This paper implements low‐cost GaN‐based three‐phase voltage and current sources to validate power protecting relays. This proposal develops a voltage generator that uses three single‐phase full‐bridge converters equipped with an LC filter and an ...
Luis Ramón Merchan‐Villalba, Juan M. Cano‐Gallardo, José J. Contreras Perez, Mario R. Arrieta Paternina, Jose M. Lozano‐Garcia, Alejandro Pizano‐Martinez, Guillermo Tapia‐Tinoco, Harold R. Chamorro   +7 more
doaj   +1 more source

Modeling and Analysis of Three Phase PWM AC-DC Converter without Current Sensor

, 2012
[[abstract]]The familiar state space averaging technique for DC-DC convertors is extended for modelling a three phase AC-DC convertor without current sensor.
Ching-Tsai Pan;Tsung-Cheng Chen
core  

Optimization of battery/ultra‐capacitor hybrid energy storage system for frequency response support in low‐inertia microgrid

IET Power Electronics
Modern power system networks are under statutory obligations to integrate renewable energy sources (RES). The primary reason is to meet ever‐increasing energy demand and also to curtail environmental pollution by greenhouse gases.
Philemon Yegon, Mukhtiar Singh
doaj   +1 more source

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

IET Power Electronics
Unbalanced voltages are becoming increasingly common in distribution networks due to the growing integrations of distributed renewable energy resources as well as large loads such as electric vehicle chargers.
Cameron Smith, Ameen Gargoom, M. T. Arif, Md. Enamul Haque   +3 more
doaj   +1 more source

Dual Josephson Impedance Bridge: Towards a Universal Bridge for Impedance Metrology. [PDF]

Metrologia, 2020
Overney F, Flowers-Jacobs NE, Jeanneret B, Rufenacht A, Fox AE, Dresselhaus PD, Benz SP.   +6 more
europepmc   +1 more source