Solar PV Fed Multifunctional Power Conversion System

A bifunctional solar PV array fed drive system for irrigation systems and for feeding the local loads is presented in this work. The local loads may be in pump operation control room lighting and ventilation or the domestic loads. The drive system employs a synchronous reluctance motor (SyRM) to drive the pump with an improved performance. Moreover, to make the system cost-effective, position sensorless based field-oriented control (FOC) algorithm is implemented. The overall drive system employs three converters arrangement, which are controlled with dedicated algorithms to achieve the desired objectives. The system also consists of a single-phase H bridge inverter, which runs in an islanded mode condition to meet the local load demand. Thereby, the local load is fed completely independent of grid supply. This system is developed at laboratory scale and its performance is validated by subjecting the drive system to various dynamic conditions. The overall response observed from the drive system makes the system suitable for the standalone irrigation systems and also for roof-top applications.