Analysis, design, and performance evaluation of droop current-sharing method

Irving, B.T.; Jovanovic, M.M.

doi:10.1109/apec.2000.826110

Cited by 156 publications

(69 citation statements)

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“…In addition, in the master-slave and centralised approaches, a failure in the master or central controller will lead to system failure. On the other hand, most of the recent research is focused on passive load sharing (decentralized control method), for example, droop control [21], [22]. In decentralized control methods, parallel modules operate independently using local measurements.…”

mentioning

confidence: 99%

Comparative Stability Analysis of Droop Control Approaches in Voltage-Source-Converter-Based DC Microgrids

Gao

Bozhko

Costabeber

et al. 2017

IEEE Trans. Power Electron.

193

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mentioning

confidence: 99%

Comparative Stability Analysis of Droop Control Approaches in Voltage-Source-Converter-Based DC Microgrids

Gao

Bozhko

Costabeber

et al. 2017

IEEE Trans. Power Electron.

193

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“…One method to implement such passive current sharing is droop current sharing [13], [14] where the output impedance (natural or artificial) of the power supplies is employed to distribute the current equally among the converters.…”

Section: A Control Architecturesmentioning

confidence: 99%

Efficiency-Based Current Distribution Scheme for Scalable Digital Power Converters

Effler

Halton

Rinne

2011

IEEE Trans. Power Electron.

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Abstract-The trend in next-generation switched-mode power supplies will lead to modular, scalable solutions which deliver power efficiently over a wide range of operation. This paper details a new approach to introduce more advanced control features to improve system efficiency into these scalable solutions. While these methods have been incorporated into multi-phase converters in the past, they all require the distribution of information among the individual converters. An advantage of the proposed method is that it does not require such communication signals between the individual power supplies and is therefore fully scalable and cost effective. A system comprising of individual, smart converters is proposed where each converter regulates its respective output power to a level with high efficiency. Converters not required for the delivered output power are shut down. The proposed approach is analysed theoretically. Implementation details for an FPGA experimental prototype system are given. The system performance for a four converter prototype system is analysed and discussed. The efficiency obtained is compared with the efficiency of a multi-phase system with phase-shedding operation and the efficiency of a system with independent power converters without phase shedding support.

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“…The challenge here is to ensure equal sharing of load current (hence, input currents also) among the modular converters, in spite of small differences in the power stage and control parameters of the different converters, and finite differences in the impedances of interconnections. Several control schemes, such as many droop schemes [6], [7], [8], master-slave scheme [9], [10], democratic current share scheme [1 1]- [13], and frequency based current share scheme [4], have been proposed to ensure active load current sharing among the parallel converters. Paralleling techniques that do not require direct interconnection of control circuits of the various modules have also been investigated [14].…”

Section: Introductionmentioning

confidence: 99%

Towards a Fully Modular Power System Architecture for DC-DC Converters

Ledezma¹

2006

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The public reporting burden for this collection of information is estimated to average 1 hour per response, inPcluding the time for reviewing istructons, searching existing data sources, gathering and maintaining the data needed, ard completing and revrewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subpect to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. Fully modular power system architecture for dc-dc conversion, where low-power, low-voltage (input and output) building block dcdc converters can be connected in any combination of series/parallel configurations at the output and/or at the input sides, has several advantages including increased reliability, standardization of design and components, higher power density and efficiency. An important component of such architecture is the autonomous, input series configuration with active input voltage and load current sharing, towards which this research project has made significant contributions. The major research tasks accomplished in this project are: 1. Development of control methods for input-series and output-series (ISOS) configuration with active voltage sharing; 2. Development of input-voltage share bus scheme for input-series, output parallel (ISOP) connection that makes the converter modules self-contained and identical, leading to fault tolerant capability; 3. Study on magnetic approaches to inputvoltace sharing for input-series connected convertersi and 4. development of interleaving techniQues for input series connected PLEASE DO NOT

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Analysis, design, and performance evaluation of droop current-sharing method

Cited by 156 publications

References 3 publications

Comparative Stability Analysis of Droop Control Approaches in Voltage-Source-Converter-Based DC Microgrids

Comparative Stability Analysis of Droop Control Approaches in Voltage-Source-Converter-Based DC Microgrids

Efficiency-Based Current Distribution Scheme for Scalable Digital Power Converters

Towards a Fully Modular Power System Architecture for DC-DC Converters

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