3. Proposed Single Phase AC Drive for Solar
Photovoltaic Water Pumping System
The proposed solar Photovoltaic water pumping system
consists of various subsystems such as PV array, power
conditioner, single phase induction motor and pump as
shown in fig.2. The power conditioner consists of dc to dc
converter and single phase inverter. The efficiency of the
system depends on the efficiency of these sub systems
which vary with input PV power levels, which is a function
of solar radiation and the load demand on the pump. As a
result, overall efficiency of the system keep continuously
varying throughout the day from sunrise to sunset.