CONCENTRATING PHOTOVOLTAIC POWER GENERATOR

摘要

PROBLEM TO BE SOLVED: To obtain a concentrating photovoltaic power generator in which solar cell panels are retreated or returned back to a power generation starting position quickly and inexpensively.

SOLUTION: Concentrating solar cell panels 2A-2D can turn independently in the direction of azimuth angle and in the direction of zenithal angle while being supported by a bearing mechanism 3 provided on a frame 1. A tracing sun sensor 43 rotatable integrally with the concentrating solar cell panels 2A-2D is provided and relative position of the sun in the direction of azimuth angle is detected from the incident position of a solar spot light on a detection plane provided in the tracing sun sensor 43. Upon elapsing a predetermined time after the solar spot light passed an origin on the detection plane, a controller operates a drive motor 53 for a predetermined time to turn the concentrating solar cell panels 2A-2D such that the solar spot light passes the origin to the opposite side. Subsequently, the time required for the solar spot light to return back to the origin is measured and upon elapsing the constant time, the drive motor 53 is operated for a predetermined time corrected by the returning time.

COPYRIGHT: (C)2004,JPO