Interfacing renewable energy sources for maximum power transfer—Part I: Statics

Kolesnik, Sergei; Sitbon, Moshe; Gadelovits, Shlomo; Suntio, Teuvo; Kuperman, Alon

doi:10.1016/j.rser.2013.12.039

Cited by 25 publications

(13 citation statements)

References 28 publications

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“…Renewable energy sources possess the so-called soft source characteristics, requiring careful interfacing (i.e., maximum power point tracking, MPPT) to allow optimal utilization in terms of cost and reliability [1,2]. A generalized renewable energy conversion system is shown in Figure 1, consisting of a renewable energy generator (REG), an interfacing power converter (IPC), and a load.…”

Section: Introductionmentioning

confidence: 99%

Analytical Derivation of Electrical-Side Maximum Power Line for Wind Generators

Kolesnik

Kuperman

2017

Energies

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Abstract:In order to enhance the maximum power point tracking (MPPT) speed of solar generators, offline calculated maximum power line (MPL) is often used as a feed-forward signal added to the output of MPPT controller. MPL is nonlinear static electrical characteristic of renewable energy generators connecting all the maximum power points for given temperature. In this letter, electrical side MPL is derived for a typical wind turbine generator (WTG). It is shown that MPLs of solar and wind generators possess similar structure, supporting the similarity between the two energy conversion processes.

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Section: Introductionmentioning

confidence: 99%

Analytical Derivation of Electrical-Side Maximum Power Line for Wind Generators

Kolesnik

Kuperman

2017

Energies

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“…4 [8]. It consists of a photocurrent source I PV , recombination current I D , equivalent shunt capacitance C PV and equivalent shunt and series resistances R SH and R S , respectively.…”

Section: Problem Formulationmentioning

confidence: 99%

“…It is well known that solar arrays (SA) output is highly dependent on environmental variables [8]. Recently, SA dynamic resistance was shown to be strongly correlated with operating point as well [9].…”

Section: Introductionmentioning

confidence: 99%

Improved adaptive input voltage control of a solar array interfacing current mode controlled boost power stage

Sitbon

Schacham

Suntio

et al. 2015

Energy Conversion and Management

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“…In grid-connected installation, the system operates solely in maximum power point tracking mode to harvest as much photovoltaic energy as possible [9], while in off-grid case power limiting operation (in which the amount of harvested photo-energy is lower than that available) may occur in the case that the microgrid's power consuming abilities are limited [10]. The mentioned DC-DC converter is often referred to as "charger" since its operation is usually independent on whether the storage element is connected to other devices or not.…”

Section: Introductionmentioning

confidence: 99%

Single-Source Multi-Battery Solar Charger: Analysis and Stability Issues

et al. 2015

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Abstract:In this paper, dynamic analysis of a multi-battery dual mode charger, powered by a single solar array and suitable for lead-acid and lithium-ion cell-based batteries is presented. Each battery is interfaced to the solar array by means of a current-controlled buck power stage, operating either in constant power or constant voltage mode. Operation in former/latter charging mode implies regulating input/output voltage of the converter, which is a non-trivial situation since while feeding different batteries, all the converters share the same input terminals, connected to the solar array. It is revealed that when at least one of the batteries operates in constant power charging mode, open-loop instability occurs whenever converter input voltage is lower than maximum power point voltage of the solar array. Consequently, input voltage regulating controller must be designed to stabilize closed-loop dynamics for the worst case of instability, which is also derived. Moreover, it is shown that the dynamics of the converters operating under output voltage control are perceived as disturbances by input voltage control loop and must be properly rejected. Simple loop shaping design is proposed based on a PI controller, allowing stabilizing the system in case of worst case instability and rejecting output voltage control induced disturbances at the expense of non-constant, operating-point dependent closed-loop damping. OPEN ACCESSEnergies 2015, 8 6428

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Interfacing renewable energy sources for maximum power transfer—Part I: Statics

Cited by 25 publications

References 28 publications

Analytical Derivation of Electrical-Side Maximum Power Line for Wind Generators

Analytical Derivation of Electrical-Side Maximum Power Line for Wind Generators

Improved adaptive input voltage control of a solar array interfacing current mode controlled boost power stage

Single-Source Multi-Battery Solar Charger: Analysis and Stability Issues

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