Photovoltaic Based Series Z-source Inverter fed Induction Motor Drive with Improved Shoot through Technique

This paper explores the series Z-source inverter (SZSI) topology for induction motor (IM) with solar photovoltaic (SPV) as source in drive application. Series Z-source inverter has single stage power conversion with buck-boost capability. Shoot through ratio is used for boosting dc link voltage in series Z- source inverter. In this paper, for enhancing the performance of SZSI improved shoot through envelop technique along with sinusoidal pulse width modulation control technique for solar PV based series Z-source inverter fed drive, is presented. The major benefits of modified boost control technique are current reduction and harmonics reduction in output voltage as compared to simple boost control scheme. The validity and feasibility of modified boost control technique for shoot through envelop to control SZSI fed induction motor is verified by simulation and experimental results.