MPPT controller, solar cell control device, photovoltaic power generation system, MPPT control program, and MPPT controller control method

摘要

Even at an unknown power point, control by estimated maximum power point is carried out. An MPPT controller (20) includes: a measurement data acquiring section (31), which acquires an amount of solar radiation and/or a temperature from a pyrheliometer (14)/a thermometer (15), and which acquires an electric current value and/or a voltage value from an ammeter (17a)/a voltmeter (17b); a search control section (34), which searches for a maximum power point by controlling a power point of an array (10) by controlling an inverter (18); an estimate equation computing section (32), which estimates an estimate equation (A) that holds between the amount of solar radiation and a maximum operating current value and/or an estimate equation (B) that holds between the temperature and a maximum operating voltage value; and an MPP estimating section 35, which estimates a maximum power point at an amount of solar radiation or at a temperature by using the estimate equation (A) or (B).