Journal ArticleDOI
A Distributed Approach to Maximum Power Point Tracking for Photovoltaic Submodule Differential Power Processing
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TLDR
This paper presents the theory and implementation of a distributed algorithm for controlling differential power processing converters in photovoltaic (PV) applications that achieves true maximum power point tracking of series-connected PV submodules by relying only on local voltage measurements and neighbor-to-neighbor communication between the differential power converters.Abstract:
This paper presents the theory and implementation of a distributed algorithm for controlling differential power processing converters in photovoltaic (PV) applications. This distributed algorithm achieves true maximum power point tracking of series-connected PV submodules by relying only on local voltage measurements and neighbor-to-neighbor communication between the differential power converters. Compared to previous solutions, the proposed algorithm achieves reduced number of perturbations at each step and potentially faster tracking without adding extra hardware; all these features make this algorithm well-suited for long submodule strings. The formulation of the algorithm, discussion of its properties, as well as three case studies are presented. The performance of the distributed tracking algorithm has been verified via experiments, which yielded quantifiable improvements over other techniques that have been implemented in practice. Both simulations and hardware experiments have confirmed the effectiveness of the proposed distributed algorithm.read more
Citations
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A Scalable Active Battery Management System With Embedded Real-Time Electrochemical Impedance Spectroscopy
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A High Power Density Series-Stacked Energy Buffer for Power Pulsation Decoupling in Single-Phase Converters
TL;DR: In this paper, a high-efficiency, high-power-density buffer architecture is proposed for power pulsation decoupling in power conversion between dc and single-phase ac. In the proposed architecture, the main energy storage capacitor is connected in series with an active buffer converter across the dc bus.
Journal ArticleDOI
Enhancing Microinverter Energy Capture With Submodule Differential Power Processing
TL;DR: In this paper, a small-footprint differential power processing (DPP) converter is integrated into a micro-inverter system to improve its energy capture by recovering power losses due to sub-module mismatch.
Journal ArticleDOI
Least Power Point Tracking Method for Photovoltaic Differential Power Processing Systems
TL;DR: In this article, a perturb-and-observve LPPT method is presented that enables the DPP converters to maintain optimal operating conditions, while reducing the total power loss and converter stress.
Journal ArticleDOI
Review of Differential Power Processing Converter Techniques for Photovoltaic Applications
TL;DR: The PV to PV series DPP systems have been most widely implemented and robust system-level control for all architectures has been a major research focus, but research and development is still needed, particularly for commercialization and parallel DPP approaches for emerging PV applications.
References
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Fundamentals of Power Electronics
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Journal ArticleDOI
Comprehensive Approach to Modeling and Simulation of Photovoltaic Arrays
TL;DR: In this article, the authors proposed a method of modeling and simulation of photovoltaic arrays by adjusting the curve at three points: open circuit, maximum power, and short circuit.
Journal ArticleDOI
A Review of the Single Phase Photovoltaic Module Integrated Converter Topologies With Three Different DC Link Configurations
Quan Li,Peter Wolfs +1 more
TL;DR: In this paper, a topology study of the PV MICs in the power range below 500 W and covers most topologies recently proposed for MIC applications is presented, where the MIC topologies are classified into three different arrangements based on the dc link configurations.
Journal ArticleDOI
Cascaded DC-DC converter connection of photovoltaic modules
Geoffrey R. Walker,Paul Sernia +1 more
TL;DR: In this paper, the authors proposed an alternative topology of nonisolated per-panel dc-dc converters connected in series to create a high voltage string connected to a simplified dc-ac inverter.
Journal ArticleDOI
Quantization resolution and limit cycling in digitally controlled PWM converters
TL;DR: In this paper, the presence of steady-state limit cycles in digitally controlled PWM converters is discussed, and conditions on the control law and quantization resolution for their elimination are suggested.