Robust Model-Following Control of Parallel UPS Single-Phase Inverters

Pascual, M.; Garcerá, G.; Figueres, E.; Benavent, Javier Mira; González-Espín, Fran

doi:10.1109/isie.2007.4374635

Cited by 15 publications

(15 citation statements)

References 31 publications

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“…The small-signal model of Fig. 4(b) is shown in (8) and this result is very interesting because H VSI_series is equal to the model found in (7) for one inverter. Thus, the structure of series-connected inverters has the same dynamic response as one isolated inverter.…”

Section: A Small-signal Modelmentioning

confidence: 68%

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High-output-voltage single-phase UPS based on series connection of low-output-voltage modular UPS

Lazzarin

Barbi

2011

XI Brazilian Power Electronics Conference

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Critical loads are usually provided by sources of uninterruptible power supply (UPS). Such devices have output voltages equivalent to levels found in commercial power grids. However, when high output voltages are required there is still no standard solution to achieve the desired level of voltage. This paper presents a proposal for developing a high-output-voltage single-phase UPS. This proposal is based on the series connection of several single-phase modules, which are compact, commercially available and of low cost, making this an attractive solution for use in industry. In this context, this paper introduces some principles regarding the series connection of UPS, which translates into the serial connection of voltage source inverters (VSIs). Furthermore, the study provides the experimental verification of the proposed system through the development of a prototype of 660V and 15kVA, obtained from the connection of three single-phase modules of 220V and 5kVA.

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Section: A Small-signal Modelmentioning

confidence: 68%

“…The curves of Fig. 5 are drawn with the transfer functions (7) and (8), and they consider that all inverters are equal. The curves of Fig.…”

Section: B Dynamic Responsementioning

confidence: 99%

High-output-voltage single-phase UPS based on series connection of low-output-voltage modular UPS

Lazzarin

Barbi

2011

XI Brazilian Power Electronics Conference

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“…The principle of the power deviation technique is based on this. The second control method based on communication is a master-slave strategy [77][78][79], which again has two variants. The master unit consists of a voltage controller for regulating the output voltage; it assigns the current reference for the other units that follow the master-the slave units.…”

Section: Control Methods With Communicationmentioning

confidence: 99%

Hierarchical control structure in microgrids with distributed generation: Island and grid-connected mode

Palizban

Kauhaniemi

2015

Renewable and Sustainable Energy Reviews

189

108

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“…Parallel operation of inverters to achieve expanded power level and system redundancy is a well-known solution for large-scale inverter systems when the capacities of switching devices are limited or constrained by technical or economic considerations [1][2][3][4][5]. In addition, implementing a high-power system with parallel-connected inverters, the repair and replacement cost of each failure will be reduced [6].…”

Section: Introductionmentioning

confidence: 99%

Operation method for parallel inverter system with common dc link

Song

Zhao

Zhu

et al. 2014

IET Power Electronics

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The configuration of parallel inverter system (PIS) with common dc link and no isolation measure is proposed. The gate control signals for switches in parallel inverters are synchronised to achieve ideal parallel operation status. Adopting the double loop control method which is composed of an outer voltage loop and an inner current loop, PIS has good dynamic response and robustness. In addition, the circulating current caused by the delay time of control signal transmission is studied in detail. The proposed operation method is easy to be implemented on the digital control board using digital signal processing and fieldprogrammable gate array. The simulation and experimental results are presented to demonstrate the validity and features of the proposed operation method.

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Robust Model-Following Control of Parallel UPS Single-Phase Inverters

Cited by 15 publications

References 31 publications

High-output-voltage single-phase UPS based on series connection of low-output-voltage modular UPS

High-output-voltage single-phase UPS based on series connection of low-output-voltage modular UPS

Hierarchical control structure in microgrids with distributed generation: Island and grid-connected mode

Operation method for parallel inverter system with common dc link

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