CURRENT SENSOR FOR PHOTOVOLTAIC POWER GENERATION SYSTEM AND METHOD FOR MANUFACTURING THE CURRENT SENSOR THEREOF

摘要

The current sensor according to the embodiment of the present invention relates to the current sensor for the solar energy comprising a core with a gap, a hall element providing the voltage proportional to the induction magnetic field by the first current of which the test current is positioned in the gap of the core, and a compensating coil that amplifies the voltage provided from the hall element and converts the first current into the second current and of each section of the core segmented by multiple sections and the operational amplifier inputting to the compensating coil are wound and offsets the induction magnetic field with the second current inputted from the operational amplifier. The core is manufactured by using the disclosed amorphous magnetic materials. With the core marked off with multiple sections and winded compensating coil in each section, it prevents the decrease of the frequency characteristic with the inter winding capacitance and the copper (dynamic) feature can be improved.