A Novel DC-DC Converter Based Closed Loop

Control of BLDC Motor for SPV fed Water Pumping

System

This Paper Presents Novel DC-DC Converter Based Closed Loop Control of BLDC Motor for SPV fed Water

Pumping System Solar Photovoltaic (SPV) Array fed Water pumping System Utilizing Buck-boost DC-DC

Converter in order to extract the maximum available power from Solar system. Solar energy has the greatest

availability compared to other energy sources. For such solar PV systems, maximum power point tracking

control is preferred for efficient operation. This concept is dealing with INC method which is one of the MPPT

methods. This study deals with a buck–boost converter controlled solar photovoltaic (SPV) array fed water

pumping in order to achieve the maximum efficiency of an SPV array and the soft starting of a permanent

magnet brushless DC (BLDC) motor. The current sensors normally used for speed control of BLDC motor are

completely eliminated. The speed of BLDC motor is controlled through the variable DC-link voltage of a

voltage-source inverter (VSI). The VSI is operated by fundamental frequency switching, avoiding the losses

due to high-frequency switching, in order to enhance the efficiency of the proposed system.