Maximum Power Point Tracking (MPPT)

日期 : Feb 2015 - Feb 2016

Maximum power point Converter (MPPC) is a technique that inverters of grid-connected wind turbines and PV solar systems employ to maximize power output. PV solar comes in different configurations. The most basic version is one where power goes from collector panels to the inverter (often via a controller) and from there directly onto the grid. A second version might split the power at the inverter. This is called a hybrid inverter. The apportionment of how much power goes to each at any given moment varies continuously. Part of the power goes to the grid and part of it to a battery bank. The third version is not connected at all to the grid but still employs a dedicated PV inverter that features MPPT. In this configuration power goes from the solar panels to the inverter and from there to a battery bank. A variation on these configurations is that instead of only one single inverter, micro inverters are deployed, one for each PV panel. This allegedly increases PV solar efficiency by up to 20%. For the sake of completeness it should be mentioned that there are now MPPT equipped specialty inverters (mostly from China) that are designed to serve three functions. They grid-connect wind power as well as PV solar power and branch off power for battery charging.