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This paper presents simulation results in order to validate the continuous operation of a photovoltaic inverter during cloud edge events. The cloud edge phenomenon is commonly known as the rapid increase in solar irradiance created by the sunlight reflection against the edge of a cloud. If the inverter does not respond properly, it may happen that the dc voltage deviates from the MPPT voltage range...
The paper introduces development of the high power inverters for the Power Conditioning System (PCS) for the large scale Photo Voltaic (PV) power plants. At first, the paper introduces a 500kW PCS with very high efficiency of 98.5%. The PCS also offers wide operation range in DC voltage and current. The wide operation range enhances the performance of the Maximum Power Point Tracking (MPPT) control...
This paper introduces the development of a switch-clamped utility-interactive photovoltaic inverter intended for very large scale photovoltaic (PV) power generation. The switch-clamped inverter proposed is superior to the diode-clamped inverter in terms of converter losses and harmonic distortion, thus a high efficiency of 98.5% was achieved by applying a switch-clamped three-level inverter and latest...
This paper deals with the parallel connection of photovoltaic inverters in a large scale photovoltaic generation system. 250 kW grid-connected LCL inverters are evaluated in order to achieve parallel operation of two, three, and four units, reaching a total capacity of 1 MW when four units are operating. The concept is to treat these four parallel connected units as one equipment, being able to operate...
This paper presents the design and development of a self-commutated power supply rated at 1.2 MVA intended for excitation of ground coils inducing forces in a large-scaled magnet. In order to create the required magnetic forces, the developed power supply delivers current to the ground coils at different amplitudes, frequencies and phases. The objective of this test system is to study vibrations in...
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