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

Lazzarin, Telles Brunelli; Barbi, I.

doi:10.1109/cobep.2011.6085197

Cited by 8 publications

(4 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Outro método com comunicação empregado é o controle distribuído, o qual agrega mais robustez e redundância do que comparativamente as de controle central e mestre-escravo, assim como melhor resposta dinâmica [1], [15]. A ausência de uma hierarquia vertical viabiliza que o controle das correntes de fase sejam computadas localmente, tendo como base uma referência comum aos circuitos conectados em paralelo.…”

Section: Sem Comunicaçãounclassified

Estratégia de Paralelismo Baseado no Conceito de Impedância Virtual para Inversores Trifásicos a Quatro Fios

Mussa¹,

Arbugeri²,

Lazzarin³

et al. 2018

Eletrônica de Potência

View full text Add to dashboard Cite

The paper proposes a strategy for parallel connection of three-phase inverters, which can be applied in UPS (uninterruptible power supply). The control strategy is based on the virtual impedance concept, with no communication among the inverters. The proposed strategy is highlighted by its easy implementation that is similar to the conventional control of one inverter. The main features of the proposed strategy are modularity, fast dynamic response and good static regulation, even under load disturbances or hot-swap connection of inverters. The digital design implementation of the control strategy is described and experimental verification using two fourwires VSI modules with rated power of 6 kVA each are reported herein.

show abstract

Section: Sem Comunicaçãounclassified

Estratégia de Paralelismo Baseado no Conceito de Impedância Virtual para Inversores Trifásicos a Quatro Fios

Mussa¹,

Arbugeri²,

Lazzarin³

et al. 2018

Eletrônica de Potência

View full text Add to dashboard Cite

show abstract

“…Conventional balancing method is inefficient and slow, because output power is only controlled proportionally accordance with SOC of each module. However, algorithm is proposed to faster SOC difference balance by compensation according to magnitude order of SOC of modules, even if SOC difference among the batteries is large [3] [4].…”

Section: Introductionmentioning

confidence: 99%

Battery balancing algorithm for serial multi-module UPS system

Lee

Choi

Kim

et al. 2014

2014 IEEE Conference and Expo Transportation Electrification Asia-Pacific (ITEC Asia-Pacific)

View full text Add to dashboard Cite

In this paper, battery balancing algorithm for serial multi-module UPS system is proposed. The battery balancing algorithm is performed by the output power control of each UPS modules for eliminating SOC difference of batteries respectively. So, the coulomb counting method is used to estimate SOC of the batteries. The reference is compensated with SOC difference and according to magnitude order of SOC . Finally, the output voltage becomes sum of output voltage of UPS modules and the utilization of the battery is increased in serial UPS system. The validity of proposed battery balancing algorithm is verified by simulation results.

show abstract

“…The architecture employs a multiple-winding transformer, which connects the outputs of the H-bridge modular converters via a magnetic connection. Magnetic elements such as multiple-winding transformers or electric machines with open-end winding as well as split windings present interesting characteristics [15]- [17] which can be used in UPS systems [18], [19] and drives. The inverter can also provide multilevel output voltage and fault tolerance when an appropriate modulation is used [20].…”

Section: Introductionmentioning

confidence: 99%

A Single-phase Inverter Based on Full-bridge Modules With Input in Series-connection and Outputs Coupled by a Multiple-winding Transformer

Ruseler¹,

Lazzarin²,

Barbi³

2015

Eletrônica de Potência

Self Cite

View full text Add to dashboard Cite

This paper proposes an isolated modular single-phase inverter for high-input voltage applications. The topology is composed of conventional and modular full-bridge inverters with series-connected inputs and magnetically-connected outputs. All input bus capacitors are connected in series and thus the dc voltage is divided among the inverter modules. The full-bridge outputs are connected by a multiple-winding lowfrequency transformer, the inverters employ a typical three-level modulation with phase-shift carriers and when an appropriate modulation is used a multilevel output voltage is supplied for the load. The auto-balance of the input capacitor voltages is verified and a harmonic analysis is performed in order to investigate the exchange of active and reactive power between the inverter modules at low and high frequency. An 8 kW prototype with three modules, a multiple-winding transformer with a transform ratio of 1:1:1:1, 1200 V dc input source and 220 V/ 60 Hz ac output voltage was built and tested in order to verify the proposed topology.

show abstract

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

Cited by 8 publications

References 26 publications

Estratégia de Paralelismo Baseado no Conceito de Impedância Virtual para Inversores Trifásicos a Quatro Fios

Estratégia de Paralelismo Baseado no Conceito de Impedância Virtual para Inversores Trifásicos a Quatro Fios

Battery balancing algorithm for serial multi-module UPS system

A Single-phase Inverter Based on Full-bridge Modules With Input in Series-connection and Outputs Coupled by a Multiple-winding Transformer

Contact Info

Product

Resources

About