• P SAI NARMADA
• D Tata rao

A simple and efficient solar photovoltaic (PV) water pumping system utilizing an BLDC motor drive is presented in this paper. This solar PV water pumping system comprises of two stages of power conversion. The first stage extracts the maximum power from a solar PV array by controlling the duty ratio of a DC-DC boost converter. The DC bus voltage is maintained by the controlling the motor speed. This regulation helps in reduction of motor losses because of reduction in motor currents at higher voltage for same power injection. To control the duty ratio, an incremental conductance (INC) based maximum power point tracking (MPPT) control technique is utilized. The proposed system is modeled and its performance is simulated in detail. The scalar control eliminates the requirement speed sensor/encoder. Precisely the need of motor current sensor is also eliminated. Moreover, the dynamics are improved by an additional speed feed forward term in the control scheme. The proposed control scheme makes the system inherently immune to the pump’s constant variation. In our proposed system, BLDC motor which has higher efficiency and noise less operation is considered. Maximum power loss of PV generator is well matched with the load characteristic of BLDC motor. MATLAB/SIMULINK results carried out for the different topology of the DC-DC converters are analyzed.

PHOTOVOLTAIC CELLS, MPPT, WATER PUMPING, SCALAR CONTROL, BLDC MOTOR DRIVE

"NEW CONTROL STRATEGY BASED PHOTOVOLTAIC WATER PUMPING SYSTEM USING BLDC MOTOR DRIVE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 12, page no.b16-b20, December-2021, Available :http://www.jetir.org/papers/JETIR2112103.pdf

"NEW CONTROL STRATEGY BASED PHOTOVOLTAIC WATER PUMPING SYSTEM USING BLDC MOTOR DRIVE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 12, page no. ppb16-b20, December-2021, Available at : http://www.jetir.org/papers/JETIR2112103.pdf