A Novel Method for Power Quality Improvement of SRM Drive Fed Three-Phase Three-Wire DG System

Abstract: Electric power produced by the use of ordinary fuels will produce toxic gasses like carbon dioxide, carbon monoxide, nitrogen dioxide etc. Which will causes environment contamination and as a result cause to global warming. This bring to the use of renewable energy sources. A Solar Photovoltaic (SPV) system, along with Maximum Power Point Tracking (MPPT), catenated to a three phase grid which feeding a switched reluctance motor is introduced. The catenation of solar photovoltaic system to the grid arise through two stages of operations, which is through a DC/DC boost converter via a current controlled Voltage Source Inverter (VSI). The Maximum power point tracking algorithm used is Perturb & Observe (P &O) algorithm, which is applied to the boost converter. Also reference reimbursement current has been generated by using I cos Φ algorithm. Adaptive hysteresis band current controller is used for switching pulse generation in current controlled VSI. Employing adaptive control, the Total Harmonic Distortion (THD) of supply current is reduced to 0.22% from 28.20%. There by the power factor is increased to a value 0.976%.

Keywords: Distributed generation (DG), power quality, switched reluctance motor (SRM), voltage source inverter (VSI).