Abstract: A photovoltaic structure having a reduced mismatch, and a system, method and computer program for reducing mismatch in a photovoltaic structure are provided. The photovoltaic structure has a plurality of photovoltaic elements arranged in a plurality of rows and a plurality of columns. The photovoltaic elements are electrically connected to one another in a plurality of parallel circuits connected together. At least two of the photovoltaic elements from one of the rows are connected in different parallel circuits to reduce partial shading loss for a plurality of time instants. The system, method and computer program provide a connection matrix for the photovoltaic structure based on irradiance levels for the photovoltaic elements to enable connection of the photovoltaic elements to one another to reduce partial shading loss for a plurality of time instants.

Abstract: A photovoltaic structure is provided. The photovoltaic structure has photovoltaic elements that can be electrically connected to one another to reduce mismatch. The photovoltaic elements can be electrically connected based on sorting the photovoltaic elements by irradiance level, minimizing mismatch, or maximizing output power. Where sorting is used, the photovoltaic elements can be connected in a serpentine arrangement.

Abstract: A high-voltage power supply (10) includes: a power scaling section (130) that receives an input voltage signal and converts the input voltage signal to a controllable DC voltage; a push-pull converter (140) for converting the controllable DC voltage to a high-frequency wave; and a voltage multiplier (200) receiving the high-frequency wave generated by the push-pull converter (140) and performing successive voltage doubling operations to generate a high-voltage DC output. In one implementation, the voltage multiplier (200) receives a square wave having a frequency of approximately 100 kHz and outputs an adjustable DC voltage of approximately 0-to-30 kV. In one implementation, the high-voltage power supply (10) includes an insulation system (250) for the voltage multiplier module (200), such an insulation system being formed of n insulating layers and m conducting strips positioned between successive insulating layers.

Abstract: A regenerative snubber circuit for a boost converter is provided which greatly reduces the switching losses of the IGBT in the converter. The circuit uses no additional magnetic components, has a simple control strategy, is relatively low-cost, and provides an increase in efficiency and decrease in size and mass of the converter.

Abstract: A high-voltage power supply (10) includes: a power scaling section (130) that receives an input voltage signal and converts the input voltage signal to a controllable DC voltage; a push-pull converter (140) for converting the controllable DC voltage to a high-frequency wave; and a voltage multiplier (200) receiving the high-frequency wave generated by the push-pull converter (140) and performing successive voltage doubling operations to generate a high-voltage DC output. In one implementation, the voltage multiplier (200) receives a square wave having a frequency of approximately 100 kHz and outputs an adjustable DC voltage of approximately 0-to-30 kV. In one implementation, the high-voltage power supply (10) includes an insulation system (250) for the voltage multiplier module (200), such an insulation system being formed of n insulating layers and m conducting strips positioned between successive insulating layers.