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A novel integrated dual-Mosfets Forward micro-inverter is proposed in this paper to overcome the shortcomings in the existing photovoltaic micro-inverter. An inductor is connected in series to the primary side of the transformer and the leakage of transformer can be viewed as a part of the inductor. The performance of proposed micro-inverter is compared with the classical Flyback and Forward micro-inverter...
The Hyperloop is a new transportation concept that involves high-speed transportation of passengers and cargo through a tube-enclosed system. Photovoltaic (PV) panels are located on the top of the tube to provide energy for the Hyperloop system. To develop this system, various configurations of PV panels arranged on the tube are studied and evaluated in terms of power and energy performance. This...
When photovoltaic panels are non-uniformly irradiated, they experience shadowing effect and the power against voltage curve will demonstrate multiple peaks which cause maximum power point tracking method to become challenging. A method often used to track the real peak is the two stage searching method which uses a ratio of the open circuit voltage. However, this method has some shortcomings especially...
This work presents a novel photovoltaic (PV) system with an intelligent maximum power point tracking (MPPT) controller. This Intelligent PV system consists of a solar model, flyback converter, digital signal processor, and DC electronic load. The MPPT controller based on the interval type-2 fuzzy logic control (type-2 FLC) can achieve fast tracking of the maximum power point and prevents interference...
Solar energy has the characteristics of intermittent and unstable, and it results in the negative impact on power quality of the utility grid while the penetration rate of the grid-connected photovoltaic generation system is increased. The energy storage system (ESS) can alleviate the negative impact on power quality of the utility grid so as to increase the penetration rate of the grid-connected...
The modulation technique is an effective measure to suppress the leakage current in three-phase three-level transformer-less photovoltaic systems. This paper further analyzes the intrinsic relationship between the common mode voltage and the zero-sequence voltage of three-phase three-leg three-level inverters, with a novel SVPWM method proposed. The presented algorithm makes the zero-sequence voltage...
A multiterminal Energy Interconnection System Based on MMC was developed, which connected active sub-modules, DC grids and AC grids. However, the power imbalance of the active sub-modules exists in this system, for example, inconsistent maximum power points of the PV panels will lead to system power loss. In order to solve the problem, this paper first presents a power control scheme between the three-terminals,...
To improve reliability of micro-grid system without energy storage, a maximum power point tracking (MPPT) algorithm considered spinning reserve capacity was proposed. Using implicit curve fitting method, the algorithm set aside 10% of PV array's maximum output power as spinning reserve of distributed generation (DG), and tracked maximum power point of load in real simultaneously. Moreover, to improve...
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