A Digitally Controlled Three-Phase Cycloconverter Type High Frequency AC Link Inverter Using Space Vector Modulation

Sha, Deshang; Qin, Zian; Wu, Dan; Liao, Xiaozhong

doi:10.6113/jpe.2011.11.1.028

Cited by 15 publications

(4 citation statements)

References 13 publications

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“…Several single-stage power converters were proposed to perform bidirectional AC-DC power conversion as a possible alternative for the traditional two-stage solutions. For instance, three-phase AC-DC converters could be based on multi-port approach [14], AC-DC DAB configuration [15][16][17] or even exploring the high-frequency link (HFL) concept [18][19][20][21]. The use of a matrix converter (MC) for the front-end is an interesting solution due to the capability to perform a direct AC to AC conversion without a DC-link [22].…”

Section: Introductionmentioning

confidence: 99%

Towards a new technological solution for community energy storage

Varajão

Miranda

Araújo

2014

2014 16th European Conference on Power Electronics and Applications

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Energy storage in low voltage grid is receiving increased attention due to renewables integration and consumption growth, challenges faced nowadays by grid operators. In this work, a study of main implementation issues for community energy storage (CES) is presented along with a comparison between possible solutions for the bidirectional isolated power conversion system (PCS) to interface a battery pack with the electric power grid. The aim of this research is to increase the power density of the power converter and keeping simultaneously the same reliability of traditional solutions. These goals are pursued to be achieved through the reduction of the conversion stages and utilization of new optimization methodologies to reduce the volume of the passive components. The proposed topology for the PCS is based on a matrix converter (MC) that performs a direct AC to AC conversion between the grid and a high-frequency transformer (HFT). With this solution it is possible to eliminate the traditional DC-link capacitor and obtain a single-stage power conversion with bidirectional power flow capability. This proposed solution is evaluated and compared with a conventional two-stage topology through extensive simulation. Two prototypes systems were designed for a 10kW PCS to connect the three-phase 230/400Vrms, 50Hz mains to a battery pack with voltage range of 320V to 490V. Simulation results are presented to assess the power quality provided by the front-end and the battery side converters, as well as performance evaluation and efficiency analysis.

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Section: Introductionmentioning

confidence: 99%

Towards a new technological solution for community energy storage

Varajão

Miranda

Araújo

2014

2014 16th European Conference on Power Electronics and Applications

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“…Convertidor bidireccional CD-CA trifásico con aislamiento en alta frecuencia: modelado utilizando funciones de conmutación. Revista Iberoamericana de Automática e Informática Industrial 19, 199-209, https://doi.org/10.4995/riai.2022.14936 de flujo de potencia bidireccional y por lo tanto es necesaria una unidad adicional de absorción de potencia reactiva en el enlace de CD (Sha, 2011).…”

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“…En términos del modelado del convertidor bidireccional CD-CA con aislamiento en alta frecuencia, se han reportado en la literatura trabajos donde se divide la operación del convertidor para considerar el flujo de potencia en ambas direcciones separando el análisis y cuyos resultados se enfocan en la estrategia de modulación del convertidor (Sayed, 2017), (Wang, 2020), (Sha, 2011), y .…”

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Convertidor bidireccional CD-CA trifásico con aislamiento en alta frecuencia: modelado utilizando funciones de conmutación

Jiménez

Ramirez

2022

Rev. iberoam. autom. inform. ind.

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El objetivo de este artículo fue desarrollar el modelado de un convertidor CD-CA con aislamiento en alta frecuencia bidireccional. Se obtuvieron dos modelos: el modelo conmutado y el modelo promediado, los cuales describen la dinámica del sistema. Los modelos obtenidos y validados mediante simulación permiten considerar este tipo de convertidores en simulaciones complejas como lo son las microrredes de CD y CA. El primer modelo describe fielmente el funcionamiento del convertidor bidireccional y el modelo promediado, el cual surge del modelo conmutado, describe el funcionamiento del convertidor a frecuencia fundamental. Los resultados de simulación permiten validar ambos modelos mediante la simulación de la operación del convertidor realizando la trasferencia de flujo de potencia bidireccional.

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“…In literature [10], [11], a high frequency AC link (HFACL) is used for isolation and to raise the low DC voltage. However, the front end switches may suffer from high voltage stress resulting from hard switching during current commutation.…”

Section: Introductionmentioning

confidence: 99%

A Bidirectional Single-Stage DC/AC Converter for Grid Connected Energy Storage Systems

Chen¹,

Liao²,

Sha³

2015

Journal of Power Electronics

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In this paper, a unified control strategy using the current space vector modulation (CSVM) technique is proposed and applied to a bidirectional three-phase DC/AC converter. The operation of the converter changes with the direction of the power flow. In the charging mode, it works as a buck type rectifier; and during the discharging mode, it operates as a boost type inverter, which makes it suitable as an interface between high voltage AC grids and low voltage energy storage devices. This topology has the following advantages: high conversion efficiency, high power factor at the grid side, tight control of the charging current and fast transition between the charging and discharging modes. The operating principle of the mode analysis, the gate signal generation, the general control strategy and the transition from a constant current (CC) to a constant voltage (CV) in the charging mode are discussed. The proposed control strategy has been validated by simulations and experimental results obtained with a 1kW laboratory prototype using supercapacitors as an energy storage device.

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A Digitally Controlled Three-Phase Cycloconverter Type High Frequency AC Link Inverter Using Space Vector Modulation

Cited by 15 publications

References 13 publications

Towards a new technological solution for community energy storage

Towards a new technological solution for community energy storage

Convertidor bidireccional CD-CA trifásico con aislamiento en alta frecuencia: modelado utilizando funciones de conmutación

A Bidirectional Single-Stage DC/AC Converter for Grid Connected Energy Storage Systems

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