Design and Implementation of ZETA Converter Fed SRM Drive Based PV system for Agricultural Applications


Rakesh Sairaju,B. V. Shankar Ram,



Solar PV system,MPPT,ZETA converter,SRM drive,agricultural applications,Perturbation and Observation (P&O),


In this article the design of Photo-voltaic (PV) based ZETA converter has been presented to drive the Switched Reluctance Motor (SRM) for the agricultural based applications to pump the water. PV panels are the major power resource to supply a water pump driven by 8/6 SRM motor. A Perturbation & Observation (P & O) based maximum power point tracking (MPPT) scheme is adopted to improve the performance of PV system. A dc-dc ZETA is connected in between PV and SRM drive to provide steady and continuous supply to the SRM for efficient operation of the system. The variable DC-link capacitor voltage of the ZETA converter controls the speed of SRM drive from various environmental conditions and irradiation levels of solar PV array. ZETA converter has the added advantage over other types of buckboost converters is that, it does not require added circuitry for inrush current problem and overload protection is also not required. To reduce the stresses on the converter elements, the two inductors are chosen to operate in continuous current conduction mode (CCM). A four-phase 8/6 SRM drive is developed in the MATLAB/SIMULINK environment to demonstrate the effectiveness of specified system.


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