Solar Based VSI Control BLDC Motor for Pump Application
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Date
2017-08-24T07:00:31Z
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Abstract
This paper deals with the solar photovoltaic (SPV) array fed water- pumping system using a
DC-DC converter as an intermediate Inverter and a permanent magnet brushless DC (BLDC)
motor to drive a centrifugal water pump. Among the different types of DC-DC converters, an
elementary Boost converter is selected in order to extract the maximum power available from
the SPV array and for safe starting of BLDC motor. The elementary DC-DC Boost converter
with reduced components and single semiconductor switch has inherent features of reducing
the ripples in its output current and possessing a boundless region for maximum power point
tracking (MPPT). The electronically commutated BLDC motor is used with a voltage source
inverter (VSI) operated at fundamental frequency switching thus avoiding the high frequency
switching losses resulting in a high efficiency of the system. The SPV array is designed such
that the power at rated DC voltage is supplied to the BLDC motor-pump under standard test
condition and maximum switch utilization of DC-DC Boost converter is achieved which
results in efficiency improvement of the converter. Performances at various operating
conditions such as starting, dynamic and steady state behavior are analyzed and suitability of
the proposed system is demonstrated using MATLAB/Simulink based simulation results.
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1NH14EE415, 1NH14EE417, 1NH13EE740, 1NH14EE419