Results 281 to 290 of about 141,121 (329)

New Intelligent Semiconductor Transformer With Bidirectional Power-Flow Capability

IEEE Transactions on Power Delivery, 2014
This letter proposes a new intelligent semiconductor transformer (IST) which consists of a bidirectional ac/dc resonant converter, dc/dc converter, and dc/ac converter. This structure provides good voltage-balancing performance on the high-voltage side and a simple control method for bidirectional power flow.
J. Y. Lee, Y. D. Yoon, B. M. Han
openaire   +1 more source

Bidirectional power flow control of a power converter using passive Hamiltonian techniques

International Journal of Circuit Theory and Applications, 2007
AbstractA controller able to achieve bidirectional power flow for a boost‐like full‐bridge rectifier is presented. It is shown that no single output yields a stable zero dynamics for power flowing both ways. The controller is computed using port Hamiltonian passivity techniques for a suitable generalized state space averaging truncation of the system ...
Carles Batlle, Arnau Dòria‐Cerezo, Enric Fossas   +2 more
openaire   +1 more source

A bidirectional contactless power transfer system with dual-side power flow control

2012 IEEE International Conference on Power System Technology (POWERCON), 2012
This paper proposed a bidirectional contactless power transfer (CPT) system with controllers at both primary and secondary sides to regulate the power flow. By involving energy feedback mode in the converters of both sides, a backward power flow channel from load to source is achieved which helps pumping out the surplus power from the output filter ...
C. Tang, X. Dai, Z. Wang, Y. Su, Y. Sun
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Power flow control based on bidirectional converter for hybrid power generation system using microcontroller

Microprocessors and Microsystems, 2021
Abstract Energy flow management of photovoltaic (PV) based ON-Grid system using BDC converter is analysed and implemented in this paper. The intermittent nature of renewable energies makes the unstable operation of utility grid system. In order to ensure the stable operation of the utility grid system and to support smart grid functionalities, there ...
K. Bharathi, M. Sasikumar
openaire   +1 more source

Power Flow Direction Definitions for Metering of Bidirectional Power

IEEE Transactions on Power Apparatus and Systems, 1983
In power system metering there are no generally accepted direction definitions applied to the bidirectional flow of active, reactive, and apparent power. To remedy this, an approach based on the power triangle in four quadrants is presented here. Recommended definitions are given for power flow directions at any point in a power system.
openaire   +1 more source

Stability analysis of cascaded converters for bidirectional power flow applications

INTELEC 2008 - 2008 IEEE 30th International Telecommunications Energy Conference, 2008
This paper establishes the criteria to ensure stable operation of two-stage, bidirectional, isolated AC-DC converters. The bi-directional converter is analyzed in the context of a building block module (BBM) that enables a fully modular architecture for universal power flow conversion applications (AC-DC, DC-AC and DC-DC).
Harish Krishnamurthy, Raja Ayyanar
openaire   +1 more source

Transformer for contactless electric vehicle charging with bidirectional power flow

2017 IEEE Power & Energy Society General Meeting, 2017
This paper investigates the use of air-gap transformers in wireless energy transfer, particularly in electric vehicles. Air-gap transformers have very low coupling factor due to the length of the air-gap between the vehicle and the charging platform. A novel approach has been proposed to achieve bidirectional control of power.
Oluwafemi J. Aworo, Jonathan K.H. Shek
openaire   +1 more source

Power Flow Management of a Solar PV and Battery Powered Telecom Load with Bidirectional Grid Power Exchange

2021 IEEE 4th International Conference on Computing, Power and Communication Technologies (GUCON), 2021
Solar photovoltaic arrays are connected in series/parallel to increase the output power rating, but are desired to have lower voltage rating due to safety issues and the complexity associated with maximum power tracking of series connected cells. Because of the intermittent characteristics of PV power output, battery energy storage systems are also ...
Sheeja V, R Kalpana
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Development of a switched-capacitor DC-DC converter with bidirectional power flow

IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 2000
This brief presents a switched-capacitor dc-dc converter that offers features of voltage step-down, voltage step-up, and bidirectional power flow. Concept of energy transfer is achieved by using two current-controlled bidirectional converter cells, which operate in antiphase.
Chow, WC, Hui, SYR, Lee, STS, Chung, HSH
openaire   +3 more sources

A new thyristor phase-controlled voltage source converter with bidirectional power flow capability

IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting, 1998
A new line-commutated thyristor phase-controlled voltage-source power converter (VSC) with bidirectional power flow capability is proposed and studied. The proposed power converter has the same structure as the pulsewidth modulation (PWM) VSC, however, the switching devices are not self-commutated devices but line-commutated thyristors, and the ...
null In Gyu Park, null Seon Ik Kim
openaire   +1 more source