Mathematical model of new bi-directional DC-AC-DC converter for supercapacitor energy storage system in photovoltaic generation

Zhong, Yun; Zhang, Jiancheng; Li, Gengyin; Xin-di, Yuan

doi:10.1109/drpt.2008.4523866

Cited by 5 publications

(5 citation statements)

References 5 publications

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“…Let 1 and 2 be chosen in such a way that the equilibrium point of every mode with ∈ = {1, 2, 4, 5, 6, 7} is asymptotically stable, then the trajectories of the system will remain bounded if the dwell time in Modes > , and 3 < .…”

Section: Control Approachmentioning

confidence: 99%

“…Typically, bidirectional converters are used for ESS and unidirectional, isolated converters to the FC [1], [2], [3], [4]. Control actions in the converters are used to ensure voltage regulation and current distribution and reconfiguration of the propulsion scheme is performed in view of the ESS state of charge (SOC) and the demanding current; leading in this way, a naturally switched description [5].…”

Section: Introductionmentioning

confidence: 99%

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Switched control for power management in hybrid propulsion schemes

Cervantes

Morales-Morales

Diaz-Diaz

et al. 2011

2011 IEEE Vehicle Power and Propulsion Conference

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This paper proposes an improved operation strategy for hybrid propulsion systems based on a switched control scheme. The goal is to investigate the role of switching criterion on fuel economy, based on a switched description of a fuel cell (FC)-batteries (B) propulsion scheme. Stability conditions of the closed-loop system are derived. A 1KW propulsion system is taken as a benchmark to illustrate the features of the proposed controller. The results show that by defining switching surfaces conveniently, similar results to those involving optimization can be obtained; simplifying in this way, the fuel economy problem to the election of off-line switching criterion parameters.

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Section: Control Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Switched control for power management in hybrid propulsion schemes

Cervantes

Morales-Morales

Diaz-Diaz

et al. 2011

2011 IEEE Vehicle Power and Propulsion Conference

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show abstract

“…The PC mechanism is focused on the reversible or irreversible Faradaic charge method (electron transmission through the electrode interface through oxidation or reduction process) [29]. During reversible method, no new chemical species (oxidation and reduction) are generated and the irreversible Faradaic process produces new species [30]. Oxidation-reduction happens whether an electron is gained or lost by one atom and an electron is lost or gained by another.…”

Section: Pseudo Capacitors (Pcs)mentioning

confidence: 99%

Cupric Oxide based Supercapacitors: A Review

Jithul

Samra

2022

J. Phys.: Conf. Ser.

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Energy storage materials are critical for reliable, safe, and flexible energy usage, as well as for using renewable energy sources. As a result, the materials that used to store energy encompass a huge range of materials that are attracting a lot of attention from research and development to industry. Supercapacitors (SCs) have attracted considerable interest as high-power storage device, with the potential to make a contribution to the speedy increase of low-energy electronics (e.g., transportable electronic home equipment, wearable) and military packages. The selection of electrode materials may also have a big impact on the storage capacity of supercapacitors. The review paper discusses the energy storage devices, types of supercapacitors, preparation methods of CuO and advantage of CuO/RGO hybrid nano composite electrode supercapacitors.

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“…In contrast to conventional batteries, an example is the addition of supercapacitors to provide the needed large amplitude and frequency variations that batteries or other mitigation technologies are unable to effectively provide by themselves; supercapacitors can be utilised as a power source for both rapid cycling and rapid storage [9,35]. The excellent temporal match between rapid PV ramp rates and supercapacitor capacity enables the provision of stable electricity outputs suitable for conventional load following generation and loads [10,14,[36][37][38][39]. This is the basis behind the PNM system in New Mexico.…”

Section: Viewing Storage As Both "Power" and "Energy" Capacitymentioning

confidence: 99%

Why Do Electricity Policy and Competitive Markets Fail to Use Advanced PV Systems to Improve Distribution Power Quality?

McHenry

Johnson

Hightower

2016

Journal of Solar Energy

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The increasing pressure for network operators to meet distribution network power quality standards with increasing peak loads, renewable energy targets, and advances in automated distributed power electronics and communications is forcing policy-makers to understand new means to distribute costs and benefits within electricity markets. Discussions surrounding how distributed generation (DG) exhibits active voltage regulation and power factor/reactive power control and other power quality capabilities are complicated by uncertainties of baseline local distribution network power quality and to whom and how costs and benefits of improved electricity infrastructure will be allocated. DG providing ancillary services that dynamically respond to the network characteristics could lead to major network improvements. With proper market structures renewable energy systems could greatly improve power quality on distribution systems with nearly no additional cost to the grid operators. Renewable DG does have variability challenges, though this issue can be overcome with energy storage, forecasting, and advanced inverter functionality. This paper presents real data from a large-scale grid-connected PV array with large-scale storage and explores effective mitigation measures for PV system variability. We discuss useful inverter technical knowledge for policy-makers to mitigate ongoing inflation of electricity network tariff components by new DG interconnection requirements or electricity markets which value power quality and control.

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Mathematical model of new bi-directional DC-AC-DC converter for supercapacitor energy storage system in photovoltaic generation

Cited by 5 publications

References 5 publications

Switched control for power management in hybrid propulsion schemes

Switched control for power management in hybrid propulsion schemes

Cupric Oxide based Supercapacitors: A Review

Why Do Electricity Policy and Competitive Markets Fail to Use Advanced PV Systems to Improve Distribution Power Quality?

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