Proceedings ArticleDOI
Maximum Power Point Tracking for Photovoltaic-Fed Multi-Source Switched Capacitor Based Multilevel Inverter
TLDR
In this paper, a shifting carrier based maximum power point tracking (MPPT) algorithm for multisource converters is proposed and is able to track the maximum power under varying irradiance levels.Abstract:
In this paper, a shifting carrier based maximum power point tracking (MPPT) algorithm for multisource converters is proposed. This MPPT algorithm is explained for both low frequency (constant carrier) and high frequency (triangular) carrier signals. The proposed algorithm is applied for a single stage multisource switched capacitor based multilevel inverter for grid connected and stand-alone photovoltaic applications. This converter features high gain, less component count, self capacitor charge balancing, better dispersed value of sources and increased source utilization. The importance of selecting an appropriate pulse width modulation technique for switched capacitor based inverters in order to maintain the capacitor charging time is explained. The proposed technique is able to track the maximum power under varying irradiance levels. The experimental results of the proposed algorithm is presented. The MPPT technique is analyzed and verified in simulation for stand-alone and grid connected applications using MATLAB/Simulink platform.read more
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Proceedings ArticleDOI
Maximum power point tracking of grid connected photovoltaic system employing model predictive control
TL;DR: In this article, the authors presented a maximum power point tracking (MPPT) technique using model predictive control (MPC) for single phase grid connected photovoltaic (PV) systems.
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A transformerless grid connected photovoltaic inverter with switched capacitors
TL;DR: In this article, a novel inverter topology with switched capacitors is proposed by connecting one pole of the PV cell directly to the neutral line of the grid, the common mode ground leakage current may appear due to the galvanic connection between the PV array and the ground, which causes the safety issues and reduces the efficiency.
Journal ArticleDOI
Analysis and Design of Modified Half-Bridge Series-Resonant Inverter With DC-Link Neutral-Point-Clamped Cell
TL;DR: In this paper, a modified half-bridge (HB) resonant inverter topology with a dc-link neutral-point-clamped cell is proposed, which can maximize the inverter output power factor, and minimize variations in the switching frequency.
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A Switched-Capacitor Multilevel Inverter for grid-connected PV systems with MPPT ability and reduced components
TL;DR: A powerful method for maximum power point tracking (MPPT) under mismatching condition and grid-connected PV principles, based on 5-level inverter extracted from proposed general Switched Capacitor Multilevel Inverter (SCMLI) topology, is recommended.
Proceedings ArticleDOI
Topology and control of transformerless high voltage grid-connected PV systems with a cascade step-up structure
TL;DR: This paper focuses on the analyses of system structure design, control principle and strategy, and then comparing the performance of different PV plant structures, including central, multi-string and this novel series-connected structure.