Abstract
This paper presents design of a variable frequency drive for two phase operation of induction motor to develop a standalone PV system. The speed of motor varies automatically with changing solar irradiation, such that it always extracts maximum power from PV source which improves efficiency of the system. This PV system consists of two power conversion stages, of which one extracts maximum power from solar array. The other provides two phase AC supply required for two phase operation of induction motor. V/Hz speed control method is employed to regulate the speed of motor. The two phase operation of single phase induction motor eliminates use of centrifugal switches and capacitors for starting, which improves reliability of system. In this paper simulation of two phase induction motor solar drive is carried out in MATLAB and results show that the speed of motor is adjusted with varying irradiation and constant temperature of solar array to always operate at maximum power point.
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