Two-Port Up/Down DC-DC Converter for Two-Dimensional Maximum Power Point Tracking of Differential Diffusion Charge Redistribution Solar Panel

Ramyar, Alireza; Cui, Xiaofan; Avestruz, Al-Thaddeus

doi:10.1109/compel.2019.8769644

Cited by 1 publication

(9 citation statements)

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“…This technique increases energy extraction and improves MPPT efficiency under mismatch and partial shading [4]. In fact, it makes a solar PV module behave as a supercell [4] and enables us to perform MPPT with cell-level granularity using only a single module-level converter [19].…”

Section: B Dcr and Ddcr Conceptsmentioning

confidence: 99%

“…However, this structure has one drawback in that all the power from the right string is necessarily processed through two switches, which are circled in Fig. 1(c); in other words, the current through these switches is not just the mismatch current as it for all the other switches, but rather the entire string current, hence causing a larger insertion loss [19].…”

Section: B Dcr and Ddcr Conceptsmentioning

confidence: 99%

“…The dDCR architecture preserves DPP by ensuring that only mismatch power is processed by the switches. Since the dDCR architecture is a two-port structure, it needs a two-port converter [19] and the conventional one-port converters like a boost converter cannot be applied to dDCR solar PV modules. Similarly, the one-port PV emulators presented in the literature do not represent the behavior of the two-port dDCR solar PV modules; as an example, a one-port PV emulator cannot be used for evaluating and testing a two-port converter suitable for dDCR solar PV modules.…”

Section: B Dcr and Ddcr Conceptsmentioning

confidence: 99%

“…A power converter for dDCR solar PV modules was validated and tested using a configurable linear emulator with an analog controller in a previous paper [19]. This new paper in the following sections analyzes and explains in detail the dDCR module emulator and validates the capability of the emulator to replicate the averaged behavior of dDCR solar PV modules.…”

Section: Introductionmentioning

confidence: 98%

“…DCR [4] is a switched-capacitor solution which enables one to perform MPPT with cell-level granularity using only a single module-level converter [19] with dDCR as an architectural extension for DPP. DCR and dDCR architectures rely on the intrinsic diffusion capacitance of the solar PV cells and do not require external energy storage elements.…”

Section: Introductionmentioning

confidence: 99%

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Reconfigurable Photovoltaic Emulator for Differential Diffusion Charge Redistribution Solar Modules

Ramyar

Avestruz

2021

IEEE Open J. Ind. Applicat.

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Evaluating, validating, testing, and performing research on hardware components that are connected to actual solar photovoltaic systems can be challenging; photovoltaic emulators are a common practical approach. In particular, addressing emulation for the crucial research topics of partial shading and cell mismatch is important. Differential diffusion charge redistribution is a switched-capacitor architecture using differential power processing for performing maximum peak power point tracking with cell-level granularity using only a single module-level converter. Among the prohibitive challenges is preventing damage to the module-embedded integrated circuits for the corner cases during fault and failure testing of connected hardware components including power converters. Emulators not only benefit research, but also product development and manufacturing of hardware components and power converters. This paper investigates a reconfigurable linear emulator with an analog controller for photovoltaic modules configured for differential diffusion charge redistribution. Cell mismatch and partial shading are shown to be equivalent and that the averaged behavior of these switched-capacitor solar photovoltaic modules can be represented by two separate continuous-time circuits that are coupled by feedback and constraints leading to an emulator design that is demonstrated through a hardware prototype.

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Section: B Dcr and Ddcr Conceptsmentioning

confidence: 99%

Section: B Dcr and Ddcr Conceptsmentioning

confidence: 99%

Section: B Dcr and Ddcr Conceptsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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