A High Step-Up Three-Port DC–DC Converter for Stand-Alone PV/Battery Power Systems

Chen, Yen-Mo; Huang, Alex Q.; Yu, Xunwei

doi:10.1109/tpel.2013.2242491

Cited by 270 publications

(144 citation statements)

References 36 publications

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“…The dynamic analyses presented in the previous subsections explicitly reveal that the analysis can be performed by substituting the PV generator with either its Norton (Section 2.2) or Thevenin (Section 2.1) equivalent circuit, as discussed in [28]. The choice of equivalent circuit cannot be done arbitrarily, however, because the feedback arrangement used and the active-switch control schemes would determine the equivalent circuit.…”

Section: Discussionmentioning

confidence: 99%

Grid-Forming-Mode Operation of Boost-Power-Stage Converter in PV-Generator-Interfacing Applications

2017

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Abstract:The application of constant power control and inclusion of energy storage in grid-connected photovoltaic (PV) energy systems may increase the use of two-stage system structures composed of DC-DC-converter-interfaced PV generator and grid-connected inverter connected in cascade. A typical PV-generator-interfacing DC-DC converter is a boost-power-stage converter. The renewable energy system may operate in three different operation modes-grid-forming, grid-feeding, and grid-supporting modes. In the last two operation modes, the outmost feedback loops are taken from the input terminal of the associated power electronic converters, which usually does not pose stability problems in terms of their input sources. In the grid-forming operation mode, the outmost feedback loops have to be connected to the output terminal of the associated power electronic converters, and hence the input terminal will behave as a negative incremental resistor at low frequencies. This property will limit the operation of the PV interfacing converter in either the constant voltage or constant current region of the PV generator for ensuring stable operation. The boost-power-stage converter can be applied as a voltage or current-fed converter limiting the stable operation region accordingly. The investigations of this paper show explicitly that only the voltage-fed mode would provide feasible dynamic and stability properties as a viable interfacing converter.

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Section: Discussionmentioning

confidence: 99%

Grid-Forming-Mode Operation of Boost-Power-Stage Converter in PV-Generator-Interfacing Applications

2017

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“…11 The converter proposed in [18]. A new three-port DC-DC converter with a high voltage conversion ratio is proposed and analysed in [19] and [20] as shown in Fig. 12.…”

Section: Reported Three-port Dc-dc Convertersmentioning

confidence: 99%

“…Another disadvantage of the non-isolated three-port converters is that most of these converters have a limited voltage gain since the freedom of modulation of the voltage conversion ratio is only the duty cycle. Some reported papers use coupled-inductor to extend the voltage conversion ratio to overcome this issue [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

A review of topologies of three-port DC–DC converters for the integration of renewable energy and energy storage system

Zhang

Sutanto

Muttaqi

2016

Renewable and Sustainable Energy Reviews

194

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The application of renewable energy such as solar photovoltaic (PV), wind and fuel cells is becoming increasingly popular because of the environmental awareness and advances in technology coupled with decreasing manufacturing cost. Power electronic converters are usually used to convert the power from the renewable sources to match the load demand and grid requirement to improve the dynamic and steady-state characteristics of these green generation systems, to provide the maximum power point tracking (MPPT) control, and to integrate the energy storage system to solve the challenge of the intermittent nature of the renewable energy and the unpredictability of the load demand. In order to improve the efficiency and the power density of the overall circuit, the use of a three-port DC-DC converter, which includes a DC input port for the renewable source, a bidirectional DC input port for the energy storage system, and a DC output port for supplying the load, is a preferable solution to the traditional method using two DC-DC converters: one for the renewable sources and another for the energy storage system. In recent years, many DC-DC three-port converters have been proposed and reported in the literature. Each of these converters has its own topology and operating principle, which results in different complexities, different numbers of components, different reliability and efficiency. In this paper, a comparison of the features of different topologies of three-port DC-DC converters that have been proposed by different research groups is reviewed briefly. This review can be used as a guide for the appropriate selection of the suitable topology to meet the particular requirement of a system. The paper also discusses the potential research extension of the topologies from three-port DC-DC converters to three-port DC-AC inverters and how the voltage gain of the non-isolated three-port DC-DC converter can be improved. A Review of Topologies of Three-Port DC-DC Converters for the Integration of Renewable Energy and Energy Storage SystemNeng Zhang, Danny Sutanto, and Kashem M. Muttaqi School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, New South Wales 2522, AustraliaAbstract: The application of renewable energy such as solar photovoltaic (PV), wind and fuel cells is becoming increasingly popular because of the environmental awareness and advances in technology coupled with decreasing manufacturing cost. Power electronic converters are usually used to convert the power from the renewable sources to match the load demand and grid requirement to improve the dynamic and steady-state characteristics of these green generation systems, to provide the maximum power point tracking (MPPT) control, and to integrate the energy storage system to solve the challenge of the intermittent nature of the renewable energy and the unpredictability of the load demand. In order to improve the efficiency and the power density of the overall circuit, the use of a three-port DC-DC converter, which ...

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“…Non-isolated TPC topologies for renewable energy systems have been presented [10,11,12,13,14]. These type of implementations need additional switches and diodes in order to configure the power flow path among the three ports.…”

Section: System Specificationsmentioning

confidence: 99%

Loss distribution analysis of a three-port converter for low-power stand-alone light-to-light systems

Mira¹,

Knott²,

Andersen³

2016

2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)

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In locations far from the equator achieving high conversion efficiency in low-power solar systems is challenging due to low solar irradiance levels. This paper presents a high efficiency three-port converter (TPC) for light-to-light (LtL) applications where no direct solar conversion is required. The separation of the power flows allows to replace the conventional solution of two cascaded converters into a single structure with shared components. A loss distribution analysis of the proposed structure is performed, which shows very good match with the experimental results. A prototype of the TPC demonstrates high efficiency in both power flow paths. At low irradiation level, the photovoltaic to battery stage shows a peak efficiency of 99.1 % at at 1.5 W output power and the LED driver stage presents a peak efficiency of 97.3 % at 3 W output power.

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A High Step-Up Three-Port DC–DC Converter for Stand-Alone PV/Battery Power Systems

Cited by 270 publications

References 36 publications

Grid-Forming-Mode Operation of Boost-Power-Stage Converter in PV-Generator-Interfacing Applications

Grid-Forming-Mode Operation of Boost-Power-Stage Converter in PV-Generator-Interfacing Applications

A review of topologies of three-port DC–DC converters for the integration of renewable energy and energy storage system

Loss distribution analysis of a three-port converter for low-power stand-alone light-to-light systems

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