A concentrated photovoltaic power generation device based on off-axis Fresnel reflective condenser

Abstract

The invention discloses an off-axis Fresnel reflection condenser-based concentrating photovoltaic power generation device. The off-axis Fresnel reflection condenser-based concentrating photovoltaic power generation device comprises a reflection condenser assembly and a receiver assembly, wherein the reflection condenser assembly is provided with off-axis Fresnel reflection condensers which can generate convergence light spots positioned above the side edge; and the receiver assembly is provided with receivers for receiving solar energy in the convergence light spots. According to the device, the off-axis Fresnel reflection condensers are arranged, so that the installation position of the receiver array assembly can be moved from the right upper side to the lateral side of the reflection condenser array assembly, and influence on the power generation power of a system due to the blocking of incident light by the receiver array assembly in the integral concentrating photovoltaic power generation device is avoided. In addition, the reflection condenser assembly and the receiver assembly are arranged in a separated mode and are sealed independently and respectively, and a module is in an 'opened' form, so that the integral concentrating photovoltaic power generation device is convenient to assemble, adjust and maintain.

Description

technical field [0001] The invention relates to a solar high-power concentrating photovoltaic power generation device, and more specifically relates to a concentrating photovoltaic power generation device based on an off-axis Fresnel reflective concentrator. Background technique [0002] The power generation performance and cost of the concentrated photovoltaic power generation system are closely related to the choice of optical system structure. The currently used concentrating photovoltaic power generation optical system can be divided into refraction type and reflective type in terms of structure, and the refraction type concentrating optical system is more widely used. [0003] The main mirror of most refractive concentrating optical systems adopts Fresnel lenses. Due to the high difficulty of manufacturing the large-diameter all-glass Fresnel lenses, SOG (Silicon-on-Glass) lenses are currently widely used. The advantage of this SOG lens is that it has better anti-aging...

AI Technical Summary

Problems solved by technology

[0005] (2) There is a large chromatic aberration in the focus of sunlight with a broad spectrum (380-1800nm);

[0007] (4) It is difficult to localize the silica gel used in SOG, which has the disadvantages of high cost and difficult control;

[0008] (5) It is inconvenient to replace the receiver component in the closed module when it fails;

[0009] (6) Module air tightness control is difficult

[0011] However, the disadvantages of the glass reflective concentrating photovoltaic power generation optical system are: the assembly and adjustment of the reflective concentrating optical system composed of the primary mirror and the secondary mirror is difficult, the manufacturing cost of the glass reflector is relatively high, and it cannot Large-scale condenser lens arrays are produced by one-time molding like SOG, so mass production of power generation modules is more difficult than using SOG lens arrays

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