SOLAR HOT WATER SYSTEM FOR ANTI-OVERHEATING AND ELECTRICITY PRODUCTION AND ITS CONTROL METHOD

摘要

The present invention relates to a solar heat hot water supplying system for solar heat overheating prevention and electricity production, and a control method thereof. The solar heat hot water supplying system receives direct current (DC) power generated in a photovoltaic module and supplies power to a DC motor pump and a driving device to control the photovoltaic module. When the inner temperature measured by a temperature sensor of a heat storage is over a set temperature of a control part, overheating is determined and the control part controls the photovoltaic module to block the upper part of a solar heat collector. Therefore, the exposed area of the solar heat collector is automatically controlled, and overheating of the solar heat collector can be prevented. An inverter, which receives direct current power of the photovoltaic module, converts direct current power into alternating current power, and transmits alternating current power to a distribution device. The distribution device then supplies power to a place where the power is used, such as to each household. Therefore, electricity of a public institution is not used, so costs can be reduced. Moreover, power remaining after supplying to the place of use is resold to a public institution such as the Korean Electric Power Corporation, so profits can be created.