Linear Current Booster for Solar FED DC Pumps

Linear Current Booster for Solar FED DC Pumps

Solar Photovoltaic systems are now widely being used for pumping purposes like drinking and irrigation. If the system has got a battery backup, there will be enough matching between the load and the source. But the systems without battery backup res ults poor co-ordination between load and source and the panel may even become unable to power the electric mo tor loads. Electric motors need high current during starting; hence there should be a current boosting mechanism that efficiently couples the PV panel with the DC motor. So, in this paper a linear current boosting technology to run the motor even under low solar irradiant conditions without stalling is being proposed. Linear Current Boos ter (LCB) is nothing but a converter topology along with Maximum Power Point Tracking (MPPT) for the efficient working of a direct solar pump. Working of a so lar PV fed direct current pump was being simulated with and without Linear Current Booster using MATLAB software. The efficiency of the solar pump was found increased more than 60% using this technology.