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A new simulation program “PV TESTER” has been developed to study the sensitivity of predicted AC Energy yield and kWh/kWp to PV module performance parameter changes, uncertainties or variabilities. This paper studies four PV technologies at 12 weather sites worldwide with 13 different input changes. PV Tester allows quantitative estimates of the yield improvement to be made with respect to site parameters...
A DC and AC power simulation comparison of: a Photovoltaic (PV) array with a modular, parallel, AC converter configuration; and a series, string configuration with a central AC converter, is presented. The systems are simulated using a comprehensive range of edge shading scenarios and irradiance conditions. Power control and transformation circuitry must be designed for shade and module mismatch tolerance...
This paper is mainly to develop a grid-connected photovoltaic simulation system with maximum power point tracking (MPPT) function using MATLAB software in order to simulate and predict the behaviors of the real photovoltaic system. An engineering model of the photovoltaic (PV) cell is first established and then combined with an MPPT algorithm, as well as models of an MPPT controller and a DC-DC converter,...
In order to obtain excellent sinusoidal output voltage and optimize performance of inverters, discrete sliding mode control strategy based on buck-boost inverter is adopted in this paper. Buck-boost photovoltaic inverter can obtain AC output voltage higher than or lower than input DC voltage. The operation principle is analyzed in detail and the mathematics model is founded by the state-space average...
This paper presents the design and analysis of both the active and reactive power control of a single-phase voltage source inverter (VSI) for grid-connected photovoltaic (PV) system. The proposed method is based on vector control of power by decoupling control of the active and reactive current components to feed the active and reactive power to the grid. The aim of this research is to control power...
In this article, a new control algorithm of MPPT (maximum power point tracking) is proposed. The proposed algorithm takes the interaction between solar arrays, photovoltaic inverter, MPPT control, dc side dynamic model of solar arrays and the light intensity of the solar arrays into consideration. The algorithm is based on Lyapunov model reference adaptive control (MRAC). The algorithm provides a...
Based on the theory of controlled source and on the assumption that the input/output variables of all AC devices in the PV station are pure sine functions, a method to simulate the operation characteristics of PV station's power conversion and transmission system is proposed. Phasor analysis and controllable power source theory are applied in the proposed method for the first time. Then a whole mathematic...
In a previous paper, the authors proposed an orthogonal-core type dc-ac converter for use in photovoltaic power systems. The dc-ac converter has such desirable features as a simple construction, high degree of safety, and, ease of maintenance. The operating characteristics of a single-phase converter for residential photovoltaic power systems have also been reported. In this paper, we discuss the...
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