Solar tracker for water surface floating photovoltaic power generation and implementation method of solar tracker

The invention discloses a solar tracker for water surface floating photovoltaic power generation. The solar tracker includes a plurality of floating type photovoltaic arrays arranged on water surface; photovoltaic assemblies are fixed on the floating type photovoltaic arrays; the side edge of each floating type photovoltaic array is provided with an adjustment water tank; the adjustment water tank is connected with a water pump; and the water pump is connected with a controller. According to the solar tracker of the invention, the quantity of water in the adjustment water tank can be adjusted through the water pump, so that gravity or buoyancy can be changed, the adjustment water tank drives the floating type photovoltaic array to move, so that an included angle between the plane of the photovoltaic assembly and a horizontal plane can be controlled, and therefore, the photovoltaic assembly can track solar altitude angles or solar hour angles in real time. With the solar tracker adopted, the problems of high cost and difficult maintenance brought about by electric machinery and transmission mechanisms adopted by an existing solar tracker can be solved.